[sysstat] / svg_stats.c

/*
 * svg_stats.c: Funtions used by sadf to display statistics in SVG format.
 * (C) 2016 by Sebastien GODARD (sysstat <at> orange.fr)
 *
 ***************************************************************************
 * This program is free software; you can redistribute it and/or modify it *
 * under the terms of the GNU General Public License as published  by  the *
 * Free Software Foundation; either version 2 of the License, or (at  your *
 * option) any later version.                                              *
 *                                                                         *
 * This program is distributed in the hope that it  will  be  useful,  but *
 * WITHOUT ANY WARRANTY; without the implied warranty  of  MERCHANTABILITY *
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
 * for more details.                                                       *
 *                                                                         *
 * You should have received a copy of the GNU General Public License along *
 * with this program; if not, write to the Free Software Foundation, Inc., *
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA              *
 ***************************************************************************
 */

#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <float.h>

#include "sa.h"
#include "sadf.h"
#include "ioconf.h"
#include "svg_stats.h"

#ifdef USE_NLS
#include <locale.h>
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif

extern unsigned int flags;
extern unsigned int dm_major;

unsigned int svg_colors[] = {0x00cc00, 0xff00bf, 0x00ffff, 0xff0000,
                             0xe85f00, 0x0000ff, 0x006020, 0x7030a0,
                             0xffff00, 0x666635, 0xd60093, 0x00bfbf,
                             0xcc3300, 0xbfbfbf, 0xffffbf, 0xff3300};
#define SVG_COLORS_IDX_MASK     0x0f

/*
 ***************************************************************************
 * Compare the values of a statistics sample with the max and min values
 * already found in previous samples for this same activity. If some new
 * min or max values are found, then save them.
 * The structure containing the statistics sample is composed of @llu_nr
 * unsigned long long fields, followed by @lu_nr unsigned long fields, then
 * followed by @u_nr unsigned int fields.
 *
 * IN:
 * @llu_nr      Number of unsigned long long fields composing the structure.
 * @lu_nr       Number of unsigned long fields composing the structure.
 * @u_nr        Number of unsigned int fields composing the structure.
 * @cs          Pointer on current sample statistics structure.
 * @ps          Pointer on previous sample statistics structure (may be NULL).
 * @itv         Interval of time in jiffies.
 * @minv        Array containing min values already found for this activity.
 * @maxv        Array containing max values already found for this activity.
 *
 * OUT:
 * @minv        Array containg the possible new min values for current activity.
 * @maxv        Array containg the possible new max values for current activity.
 *
 * NB: @minv and @maxv arrays contain values in the same order as the fields
 * in the statistics structure.
 ***************************************************************************
 */
void save_extrema(int llu_nr, int lu_nr, int u_nr, void *cs, void *ps,
                  unsigned long long itv, double minv[], double maxv[])
{
        unsigned long long *lluc, *llup;
        unsigned long *luc, *lup;
        unsigned int *uc, *up;
        double val;
        int i, m = 0;

        /* Compare unsigned long long fields */
        lluc = (unsigned long long *) cs;
        llup = (unsigned long long *) ps;
        for (i = 0; i < llu_nr; i++, m++) {
                if (ps) {
                        val = S_VALUE(*llup, *lluc, itv);
                }
                else {
                        /*
                         * If no pointer on previous sample has been given
                         * then the value is not a per-second one.
                         */
                        val = (double) *lluc;
                }
                if (val < minv[m]) {
                        minv[m] = val;
                }
                if (val > maxv[m]) {
                        maxv[m] = val;
                }
                lluc = (unsigned long long *) ((char *) lluc + ULL_ALIGNMENT_WIDTH);
                if (ps) {
                        llup = (unsigned long long *) ((char *) llup + ULL_ALIGNMENT_WIDTH);
                }
        }

        /* Compare unsigned long fields */
        luc = (unsigned long *) lluc;
        lup = (unsigned long *) llup;
        for (i = 0; i < lu_nr; i++, m++) {
                if (ps) {
                        val = S_VALUE(*lup, *luc, itv);
                }
                else {
                        val = (double) *luc;
                }
                if (val < minv[m]) {
                        minv[m] = val;
                }
                if (val > maxv[m]) {
                        maxv[m] = val;
                }
                luc = (unsigned long *) ((char *) luc + UL_ALIGNMENT_WIDTH);
                if (ps) {
                        lup = (unsigned long *) ((char *) lup + UL_ALIGNMENT_WIDTH);
                }
        }

        /* Compare unsigned int fields */
        uc = (unsigned int *) luc;
        up = (unsigned int *) lup;
        for (i = 0; i < u_nr; i++, m++) {
                if (ps) {
                        val = S_VALUE(*up, *uc, itv);
                }
                else {
                        val = (double) *uc;
                }
                if (val < minv[m]) {
                        minv[m] = val;
                }
                if (val > maxv[m]) {
                        maxv[m] = val;
                }
                uc = (unsigned int *) ((char *) uc + U_ALIGNMENT_WIDTH);
                if (ps) {
                        up = (unsigned int *) ((char *) up + U_ALIGNMENT_WIDTH);
                }
        }
}

/*
 ***************************************************************************
 * Find the min and max values of all the graphs that will be drawn in the
 * same window. The graphs have their own min and max values in
 * minv[pos...pos+n-1] and maxv[pos...pos+n-1]. 
 *
 * IN:
 * @pos         Position in array for the first graph extrema value.
 * @n           Number of graphs to scan.
 * @minv        Array containing min values for graphs.
 * @maxv        Array containing max values for graphs.
 *
 * OUT:
 * @minv        minv[pos] is modified and contains the global min value found.
 * @maxv        maxv[pos] is modified and contains the global max value found.
 ***************************************************************************
 */
void get_global_extrema(int pos, int n, double minv[], double maxv[])
{
        int i;

        for (i = 1; i < n; i++) {
                if (minv[pos + i] < minv[pos]) {
                        minv[pos] = minv[pos + i];
                }
                if (maxv[pos + i] > maxv[pos]) {
                        maxv[pos] = maxv[pos + i];
                }
        }
}

/*
 ***************************************************************************
 * Allocate arrays used to save graphs data, min and max values.
 * @n arrays of chars are allocated for @n graphs to draw. A pointer on this
 * array is returned. This is equivalent to "char data[][n]" where each
 * element is of indeterminate size and will contain the graph data (eg.
 * << path d="M12,14 L13,16..." ... >>.
 * The size of element data[i] is given by outsize[i].
 * Also allocate an array to save min values (equivalent to "double spmin[n]")
 * and an array for max values (equivalent to "double spmax[n]").
 *
 * IN:
 * @n           Number of graphs to draw for current activity.
 *
 * OUT:
 * @outsize     Array that will contain the sizes of each element in array
 *              of chars. Equivalent to "int outsize[n]" with
 *              outsize[n] = sizeof(data[][n]).
 * @spmin       Array that will contain min values for current activity.
 * @spmax       Array that will contain max values for current activity.
 *
 * RETURNS:
 * Pointer on array of arrays of chars that will contain the graphs data.
 *
 * NB: @min and @max arrays contain values in the same order as the fields
 * in the statistics structure.
 ***************************************************************************
 */
char **allocate_graph_lines(int n, int **outsize, double **spmin, double **spmax)
{
        char **out;
        char *out_p;
        int i;

        /*
         * Allocate an array of pointers. Each of these pointers will
         * be an array of chars.
         */
        if ((out = (char **) malloc(n * sizeof(char *))) == NULL) {
                perror("malloc");
                exit(4);
        }
        /* Allocate array that will contain the size of each array of chars */
        if ((*outsize = (int *) malloc(n * sizeof(int))) == NULL) {
                perror("malloc");
                exit(4);
        }
        /* Allocate array that will contain the min value of each graph */
        if ((*spmin = (double *) malloc(n * sizeof(double))) == NULL) {
                perror("malloc");
                exit(4);
        }
        /* Allocate array that will contain the max value of each graph */
        if ((*spmax = (double *) malloc(n * sizeof(double))) == NULL) {
                perror("malloc");
                exit(4);
        }
        /* Allocate arrays of chars that will contain graphs data */
        for (i = 0; i < n; i++) {
                if ((out_p = (char *) malloc(CHUNKSIZE * sizeof(char))) == NULL) {
                        perror("malloc");
                        exit(4);
                }
                *(out + i) = out_p;
                *out_p = '\0';                  /* Reset string so that it can be safely strncat()'d later */
                *(*outsize + i) = CHUNKSIZE;    /* Each array of chars has a default size of CHUNKSIZE */
                *(*spmin + i) = DBL_MAX;        /* Init min and max values */
                *(*spmax + i) = -DBL_MAX;
        }

        return out;
}

/*
 ***************************************************************************
 * Save SVG code for current graph.
 *
 * IN:
 * @data        SVG code to append to current graph definition.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 *
 * OUT:
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 ***************************************************************************
 */
void save_svg_data(char *data, char **out, int *outsize)
{
        char *out_p;
        int len;

        out_p = *out;
        /* Determine space left in array */
        len = *outsize - strlen(out_p) - 1;
        if (strlen(data) >= len) {
                /*
                 * If current array of chars doesn't have enough space left
                 * then reallocate it with CHUNKSIZE more bytes.
                 */
                SREALLOC(out_p, char, *outsize + CHUNKSIZE);
                *out = out_p;
                *outsize += CHUNKSIZE;
                len += CHUNKSIZE;
        }
        strncat(out_p, data, len);
}

/*
 ***************************************************************************
 * Update line graph definition by appending current X,Y coordinates.
 *
 * IN:
 * @timetag     Timestamp in seconds since the epoch for current sample
 *              stats. Will be used as X coordinate.
 * @value       Value of current sample metric. Will be used as Y coordinate.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 * @restart     Set to TRUE if a RESTART record has been read since the last
 *              statistics sample.
 *
 * OUT:
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 ***************************************************************************
 */
void lnappend(unsigned long timetag, double value, char **out, int *outsize, int restart)
{
        char data[128];

        /* Prepare additional graph definition data */
        snprintf(data, 128, " %c%lu,%.2f", restart ? 'M' : 'L', timetag, value);
        data[127] = '\0';

        save_svg_data(data, out, outsize);
}

/*
 ***************************************************************************
 * Update line graph definition by appending current X,Y coordinates. Use
 * (unsigned long) integer values here.
 *
 * IN:
 * @timetag     Timestamp in seconds since the epoch for current sample
 *              stats. Will be used as X coordinate.
 * @value       Value of current sample metric. Will be used as Y coordinate.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 * @restart     Set to TRUE if a RESTART record has been read since the last
 *              statistics sample.
 *
 * OUT:
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 ***************************************************************************
 */
void lniappend(unsigned long timetag, unsigned long value, char **out, int *outsize,
               int restart)
{
        char data[128];

        /* Prepare additional graph definition data */
        snprintf(data, 128, " %c%lu,%lu", restart ? 'M' : 'L', timetag, value);
        data[127] = '\0';

        save_svg_data(data, out, outsize);
}

/*
 ***************************************************************************
 * Update bar graph definition by adding a new rectangle.
 *
 * IN:
 * @timetag     Timestamp in seconds since the epoch for current sample
 *              stats. Will be used as X coordinate.
 * @value       Value of current sample metric. Will be used as rectangle
 *              height.
 * @offset      Offset for Y coordinate.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 * @dt          Interval of time in seconds between current and previous
 *              sample.
 *
 * OUT:
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 ***************************************************************************
 */
void brappend(unsigned long timetag, double offset, double value, char **out, int *outsize,
              unsigned long dt)
{
        char data[128];

        /* Prepare additional graph definition data */
        if (value == 0.0)
                /* Dont draw a flat rectangle! */
                return;

        snprintf(data, 128, "<rect x=\"%lu\" y=\"%.2f\" height=\"%.2f\" width=\"%lu\"/>",
                 timetag - dt, MINIMUM(offset, 100.0), MINIMUM(value, (100.0 - offset)), dt);
        data[127] = '\0';

        save_svg_data(data, out, outsize);

}

/*
 ***************************************************************************
 * Update CPU graph and min/max values for each metric.
 *
 * IN:
 * @timetag     Timestamp in seconds since the epoch for current sample
 *              stats. Will be used as X coordinate.
 * @offset      Offset for Y coordinate.
 * @value       Value of current CPU metric. Will be used as rectangle
 *              height.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 * @dt          Interval of time in seconds between current and previous
 *              sample.
 * @spmin       Min value already found for this CPU metric.
 * @spmax       Max value already found for this CPU metric.
 *
 * OUT:
 * @offset      New offset value, to use to draw next rectangle
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 ***************************************************************************
 */
void cpuappend(unsigned long timetag, double *offset, double value, char **out, int *outsize,
               unsigned long dt, double *spmin, double *spmax)
{
        /* Save min and max values */
        if (value < *spmin) {
                *spmin = value;
        }
        if (value > *spmax) {
                *spmax = value;
        }
        /* Prepare additional graph definition data */
        brappend(timetag, *offset, value, out, outsize, dt);

        *offset += value;
}

/*
 ***************************************************************************
 * Update rectangular graph and min/max values.
 *
 * IN:
 * @timetag     Timestamp in seconds since the epoch for current sample
 *              stats. Will be used as X coordinate.
 * @p_value     Metric value for previous sample
 * @value       Metric value for current sample.
 * @out         Pointer on array of chars for current graph definition.
 * @outsize     Size of array of chars for current graph definition.
 * @restart     Set to TRUE if a RESTART record has been read since the last
 *              statistics sample.
 * @dt          Interval of time in seconds between current and previous
 *              sample.
 * @spmin       Min value already found for this metric.
 * @spmax       Max value already found for this metric.
 *
 * OUT:
 * @out         Pointer on array of chars for current graph definition that
 *              has been updated with the addition of current sample data.
 * @outsize     Array that containing the (possibly new) sizes of each
 *              element in array of chars.
 * @spmin       Min value for this metric.
 * @spmax       Max value for this metric.
 ***************************************************************************
 */
void recappend(unsigned long timetag, double p_value, double value, char **out, int *outsize,
               int restart, unsigned long dt, double *spmin, double *spmax)
{
        char data[128], data1[128], data2[128];

        /* Save min and max values */
        if (value < *spmin) {
                *spmin = value;
        }
        if (value > *spmax) {
                *spmax = value;
        }
        /* Prepare additional graph definition data */
        if (restart) {
                snprintf(data1, 128, " M%lu,%.2f", timetag - dt, p_value);
                data1[127] = '\0';
        }
        if (p_value != value) {
                snprintf(data2, 128, " L%lu,%.2f", timetag, value);
                data2[127] = '\0';
        }
        snprintf(data, 128, "%s L%lu,%.2f%s", restart ? data1 : "", timetag, p_value,
                 p_value != value ? data2 : "");
        data[127] = '\0';

        save_svg_data(data, out, outsize);
}

/*
 ***************************************************************************
 * Calculate the value on the Y axis between two horizontal lines that will
 * make the graph background grid.
 *
 * IN:
 * @lmax        Max value reached for this graph.
 *
 * OUT:
 * @dp          Number of decimal places for Y graduations.
 *
 * RETURNS:
 * Value between two horizontal lines.
 ***************************************************************************
 */
double ygrid(double lmax, int *dp)
{
        char val[32];
        int l, i, e = 1;
        long n = 0;

        *dp = 0;
        if (lmax == 0) {
                lmax = 1;
        }
        n = (long) (lmax / SVG_H_GRIDNR);
        if (!n) {
                *dp = 2;
                return (lmax / SVG_H_GRIDNR);
        }
        snprintf(val, 32, "%ld", n);
        val[31] = '\0';
        l = strlen(val);
        if (l < 2)
                return n;
        for (i = 1; i < l; i++) {
                e = e * 10;
        }
        return ((double) (((long) (n / e)) * e));
}

/*
 ***************************************************************************
 * Calculate the value on the X axis between two vertical lines that will
 * make the graph background grid.
 *
 * IN:
 * @timestart   First data timestamp (X coordinate of the first data point).
 * @timeend     Last data timestamp (X coordinate of the last data point).
 *
 * RETURNS:
 * Value between two vertical lines.
 ***************************************************************************
 */
long int xgrid(unsigned long timestart, unsigned long timeend)
{
        if ((timeend - timestart) <= SVG_V_GRIDNR)
                return 1;
        else
                return ((timeend - timestart) / SVG_V_GRIDNR);
}

/*
 ***************************************************************************
 * Free global graphs structures.
 *
 * IN:
 * @out         Pointer on array of chars for each graph definition.
 * @outsize     Size of array of chars for each graph definition.
 * @spmin       Array containing min values for graphs.
 * @spmax       Array containing max values for graphs.
 ***************************************************************************
 */
void free_graphs(char **out, int *outsize, double *spmin, double *spmax)
{
        if (out) {
                free(out);
        }
        if (outsize) {
                free(outsize);
        }
        if (spmin) {
                free(spmin);
        }
        if (spmax) {
                free(spmax);
        }
}

/*
 ***************************************************************************
 * Display all graphs for current activity.
 *
 * IN:
 * @g_nr        Number of graphs to display.
 * @g_type      Type of graph (SVG_LINE_GRAPH, SVG_BAR_GRAPH).
 * @title       Titles for each set of graphs.
 * @g_title     Titles for each graph.
 * @item_name   Item (network interface, etc.) name.
 * @group       Indicate how graphs are grouped together to make sets.
 * @spmin       Array containing min values for graphs.
 * @spmax       Array containing max values for graphs.
 * @out         Pointer on array of chars for each graph definition.
 * @outsize     Size of array of chars for each graph definition.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no)
 *              and a pointer on a record header structure (.@record_hdr)
 *              containing the first stats sample.
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
void draw_activity_graphs(int g_nr, int g_type, char *title[], char *g_title[], char *item_name,
                          int group[], double *spmin, double *spmax, char **out, int *outsize,
                          struct svg_parm *svg_p, struct record_header *record_hdr)
{
        struct record_header stamp;
        struct tm rectime;
        char *out_p;
        int i, j, dp, pos = 0;
        long int k;
        double lmax, xfactor, yfactor, ypos;
        char cur_time[32];

        /* Translate to proper position for current activity */
        printf("<g id=\"g%d\" transform=\"translate(0,%d)\">\n",
               svg_p->graph_no,
               SVG_H_YSIZE + svg_p->graph_no * SVG_T_YSIZE);

        /* For each set of graphs which are part of current activity */
        for (i = 0; i < g_nr; i++) {

                /* Graph background */
                printf("<rect x=\"0\" y=\"%d\" height=\"%d\" width=\"%d\"/>\n",
                       i * SVG_T_YSIZE,
                       SVG_V_YSIZE, SVG_V_XSIZE);

                /* Graph title */
                printf("<text x=\"0\" y=\"%d\" style=\"fill: yellow; stroke: none\">%s",
                       20 + i * SVG_T_YSIZE, title[i]);
                if (item_name) {
                        printf(" [%s]", item_name);
                }
                printf("\n");
                printf("<tspan x=\"%d\" y=\"%d\" style=\"fill: yellow; stroke: none; font-size: 12px\">"
                       "(Min, Max values)</tspan>\n</text>\n",
                       5 + SVG_M_XSIZE + SVG_G_XSIZE,
                       25 + i * SVG_T_YSIZE);

                /*
                 * At least two samples are needed.
                 * And a min and max value should have been found.
                 */
                if ((record_hdr->ust_time == svg_p->record_hdr->ust_time) ||
                    (*(spmin + i) == DBL_MAX) || (*(spmax + i) == -DBL_MIN)) {
                        /* No data found */
                        printf("<text x=\"0\" y=\"%d\" style=\"fill: red; stroke: none\">No data</text>\n",
                               SVG_M_YSIZE + i * SVG_T_YSIZE);
                        continue;
                }

                /* X and Y axis */
                printf("<polyline points=\"%d,%d %d,%d %d,%d\" stroke=\"white\" stroke-width=\"2\"/>\n",
                       SVG_M_XSIZE, SVG_M_YSIZE + i * SVG_T_YSIZE,
                       SVG_M_XSIZE, SVG_M_YSIZE + SVG_G_YSIZE + i * SVG_T_YSIZE,
                       SVG_M_XSIZE + SVG_G_XSIZE, SVG_M_YSIZE + SVG_G_YSIZE + i * SVG_T_YSIZE);

                /* Caption */
                for (j = 0; j < group[i]; j++) {
                        /* Set dp to TRUE (1) if current metric is based on integer values */
                        dp = (g_title[pos + j][0] == '~');
                        printf("<text x=\"%d\" y=\"%d\" style=\"fill: #%06x; stroke: none; font-size: 12px\">"
                               "%s (%.*f, %.*f)</text>\n",
                               5 + SVG_M_XSIZE + SVG_G_XSIZE, SVG_M_YSIZE + i * SVG_T_YSIZE + j * 15,
                               svg_colors[(pos + j) & SVG_COLORS_IDX_MASK], g_title[pos + j] + dp,
                               !dp * 2, *(spmin + pos + j), !dp * 2, *(spmax + pos + j));
                }

                /* Get global min and max value for current set of graphs */
                get_global_extrema(pos, group[i], spmin, spmax);

                /* Translate to proper position for current graph within current activity */
                printf("<g transform=\"translate(%d,%d)\">\n",
                       SVG_M_XSIZE, SVG_M_YSIZE + SVG_G_YSIZE + i * SVG_T_YSIZE);

                /* Grid */
                if (g_type == SVG_LINE_GRAPH) {
                        /* For line graphs */
                        if (*(spmax + pos) == 0) {
                                /* If all values are zero then set current max value to 1 */
                                lmax = 1.0;
                        }
                        else {
                                lmax = *(spmax + pos);
                        }
                        /* Max value cannot be too small, else Y graduations will be meaningless */
                        if (lmax < SVG_H_GRIDNR * 0.01) {
                                lmax = SVG_H_GRIDNR * 0.01;
                        }
                        ypos = ygrid(lmax, &dp);
                }
                else {
                        /* For bar graphs (used for %values) */
                        ypos = 25.0;    /* Draw lines at 25%, 50%, 75% and 100% */
                        dp = 0;         /* No decimals */

                        /* Max should be always 100% except for percentage values greater than 100% */
                        if (*(spmax + pos) > 100.0) {
                                lmax = *(spmax + pos);
                        }
                        else {
                                lmax = 100.0;
                        }
                }
                yfactor = (double) -SVG_G_YSIZE / lmax;
                j = 1;
                do {
                        printf("<polyline points=\"0,%.2f %d,%.2f\" style=\"vector-effect: non-scaling-stroke; "
                               "stroke: #202020\" transform=\"scale(1,%f)\"/>\n",
                               ypos * j, SVG_G_XSIZE, ypos * j, yfactor);
                        j++;
                }
                while (ypos * j <= lmax);
                j = 0;
                do {
                        printf("<text x=\"0\" y=\"%ld\" style=\"fill: white; stroke: none; font-size: 12px; "
                               "text-anchor: end\">%.*f.</text>\n",
                               (long) (ypos * j * yfactor), dp, ypos * j);
                        j++;
                }
                while (ypos * j <= lmax);

                k = xgrid(svg_p->record_hdr->ust_time, record_hdr->ust_time);
                xfactor = (double) SVG_G_XSIZE / (record_hdr->ust_time - svg_p->record_hdr->ust_time);
                stamp = *svg_p->record_hdr;
                for (j = 0; (j <= SVG_V_GRIDNR) && (stamp.ust_time <= record_hdr->ust_time); j++) {
                        sa_get_record_timestamp_struct(flags, &stamp, &rectime, NULL);
                        set_record_timestamp_string(flags, &stamp, NULL, cur_time, 32, &rectime);
                        printf("<polyline points=\"%ld,0 %ld,%d\" style=\"vector-effect: non-scaling-stroke; "
                               "stroke: #202020\" transform=\"scale(%f,1)\"/>\n",
                               k * j, k * j, -SVG_G_YSIZE, xfactor);
                        printf("<text x=\"%ld\" y=\"10\" style=\"fill: white; stroke: none; font-size: 12px; "
                               "text-anchor: start\" transform=\"rotate(45,%ld,0)\">%s</text>\n",
                               (long) (k * j * xfactor), (long) (k * j * xfactor), cur_time);
                        stamp.ust_time += k;
                }
                if (!PRINT_LOCAL_TIME(flags)) {
                        printf("<text x=\"-10\" y=\"30\" style=\"fill: yellow; stroke: none; font-size: 12px; "
                               "text-anchor: end\">UTC</text>\n");
                }

                /* Draw current graphs set */
                for (j = 0; j < group[i]; j++) {
                        out_p = *(out + pos + j);
                        if (g_type == SVG_LINE_GRAPH) {
                                /* Line graphs */
                                printf("<path id=\"g%dp%d\" d=\"%s\" "
                                       "style=\"vector-effect: non-scaling-stroke; "
                                       "stroke: #%06x; stroke-width: 1; fill-opacity: 0\" "
                                       "transform=\"scale(%f,%f)\"/>\n",
                                       svg_p->graph_no, pos + j, out_p,
                                       svg_colors[(pos + j) & SVG_COLORS_IDX_MASK],
                                       xfactor,
                                       yfactor);
                        }
                        else if (*out_p) {      /* Ignore flat bars */
                                /* Bar graphs */
                                printf("<g style=\"fill: #%06x; stroke: none\" transform=\"scale(%f,%f)\">\n",
                                       svg_colors[(pos + j) & SVG_COLORS_IDX_MASK], xfactor, yfactor);
                                printf("%s\n", out_p);
                                printf("</g>\n");
                        }
                        free(out_p);
                }
                printf("</g>\n");
                pos += group[i];
        }
        printf("</g>\n");

        /* Next graph */
        (svg_p->graph_no) += g_nr;
}

/*
 ***************************************************************************
 * Display CPU statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_cpu_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                    unsigned long long g_itv, struct record_header *record_hdr)
{
        struct stats_cpu *scc, *scp;
        int group1[] = {5};
        int group2[] = {9};
        char *title[] = {"CPU load"};
        char *g_title1[] = {"%user", "%nice", "%system", "%iowait", "%steal", "%idle"};
        char *g_title2[] = {"%usr", "%nice", "%sys", "%iowait", "%steal", "%irq", "%soft", "%guest", "%gnice", "%idle"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;
        char item_name[8];
        double offset, val;
        int i, j, k, pos, cpu_offline;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(10 * a->nr, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* For each CPU */
                for (i = 0; (i < a->nr) && (i < a->bitmap->b_size + 1); i++) {

                        scc = (struct stats_cpu *) ((char *) a->buf[curr]  + i * a->msize);
                        scp = (struct stats_cpu *) ((char *) a->buf[!curr] + i * a->msize);

                        /* Should current CPU (including CPU "all") be displayed? */
                        if (!(a->bitmap->b_array[i >> 3] & (1 << (i & 0x07))))
                                /* No */
                                continue;

                        pos = i * 10;
                        offset = 0.0;

                        if (i) {        /* Don't test CPU "all" here */
                                /*
                                 * If the CPU is offline then it is omited from /proc/stat:
                                 * All the fields couldn't have been read and the sum of them is zero.
                                 * (Remember that guest/guest_nice times are already included in
                                 * user/nice modes.)
                                 */
                                if ((scc->cpu_user    + scc->cpu_nice + scc->cpu_sys   +
                                     scc->cpu_iowait  + scc->cpu_idle + scc->cpu_steal +
                                     scc->cpu_hardirq + scc->cpu_softirq) == 0) {
                                        /*
                                         * Set current struct fields (which have been set to zero)
                                         * to values from previous iteration. Hence their values won't
                                         * jump from zero when the CPU comes back online.
                                         */
                                        *scc = *scp;

                                        g_itv = 0;
                                        cpu_offline = TRUE;
                                }
                                else {
                                        /*
                                         * Recalculate interval for current proc.
                                         * If result is 0 then current CPU is a tickless one.
                                         */
                                        g_itv = get_per_cpu_interval(scc, scp);
                                        cpu_offline = FALSE;
                                }

                                if (!g_itv) {   /* Current CPU is offline or tickless */

                                        val = (cpu_offline ? 0.0        /* Offline CPU: %idle = 0% */
                                                           : 100.0);    /* Tickless CPU: %idle = 100% */

                                        if (DISPLAY_CPU_DEF(a->opt_flags)) {
                                                j  = 5; /* -u */
                                        }
                                        else {  /* DISPLAY_CPU_ALL(a->opt_flags) */
                                                j = 9;  /* -u ALL */
                                        }

                                        /* Check min/max values for %user, etc. */
                                        for (k = 0; k < j; k++) {
                                                if (0.0 < *(spmin + pos + k)) {
                                                        *(spmin + pos + k) = 0.0;
                                                }
                                                if (0.0 > *(spmax + pos + k)) {
                                                        *(spmax + pos + k) = 0.0;
                                                }
                                        }

                                        /* %idle */
                                        cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                                  &offset, val,
                                                  out + pos + j, outsize + pos + j, svg_p->dt,
                                                  spmin + pos + j, spmax + pos + j);
                                        continue;
                                }
                        }

                        if (DISPLAY_CPU_DEF(a->opt_flags)) {
                                /* %user */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_user, scc->cpu_user, g_itv),
                                          out + pos, outsize + pos, svg_p->dt,
                                          spmin + pos, spmax + pos);
                        }
                        else {
                                /* %usr */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset,
                                          (scc->cpu_user - scc->cpu_guest) < (scp->cpu_user - scp->cpu_guest) ?
                                           0.0 :
                                           ll_sp_value(scp->cpu_user - scp->cpu_guest,
                                                       scc->cpu_user - scc->cpu_guest, g_itv),
                                          out + pos, outsize + pos, svg_p->dt,
                                          spmin + pos, spmax + pos);
                        }

                        if (DISPLAY_CPU_DEF(a->opt_flags)) {
                                /* %nice */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_nice, scc->cpu_nice, g_itv),
                                          out + pos + 1, outsize + pos + 1, svg_p->dt,
                                          spmin + pos + 1, spmax + pos + 1);
                        }
                        else {
                                /* %nice */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset,
                                          (scc->cpu_nice - scc->cpu_guest_nice) < (scp->cpu_nice - scp->cpu_guest_nice) ?
                                           0.0 :
                                           ll_sp_value(scp->cpu_nice - scp->cpu_guest_nice,
                                                       scc->cpu_nice - scc->cpu_guest_nice, g_itv),
                                          out + pos + 1, outsize + pos + 1, svg_p->dt,
                                          spmin + pos + 1, spmax + pos + 1);
                        }

                        if (DISPLAY_CPU_DEF(a->opt_flags)) {
                                /* %system */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset,
                                          ll_sp_value(scp->cpu_sys + scp->cpu_hardirq + scp->cpu_softirq,
                                                      scc->cpu_sys + scc->cpu_hardirq + scc->cpu_softirq,
                                                      g_itv),
                                          out + pos + 2, outsize + pos + 2, svg_p->dt,
                                          spmin + pos + 2, spmax + pos + 2);
                        }
                        else {
                                /* %sys */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_sys, scc->cpu_sys, g_itv),
                                          out + pos + 2, outsize + pos + 2, svg_p->dt,
                                          spmin + pos + 2, spmax + pos + 2);
                        }

                        /* %iowait */
                        cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                  &offset, ll_sp_value(scp->cpu_iowait, scc->cpu_iowait, g_itv),
                                  out + pos + 3, outsize + pos + 3, svg_p->dt,
                                  spmin + pos + 3, spmax + pos + 3);

                        /* %steal */
                        cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                  &offset, ll_sp_value(scp->cpu_steal, scc->cpu_steal, g_itv),
                                  out + pos + 4, outsize + pos + 4, svg_p->dt,
                                  spmin + pos + 4, spmax + pos + 4);

                        if (DISPLAY_CPU_ALL(a->opt_flags)) {
                                /* %irq */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_hardirq, scc->cpu_hardirq, g_itv),
                                          out + pos + 5, outsize + pos + 5, svg_p->dt,
                                          spmin + pos + 5, spmax + pos + 5);

                                /* %soft */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_softirq, scc->cpu_softirq, g_itv),
                                          out + pos + 6, outsize + pos + 6, svg_p->dt,
                                          spmin + pos + 6, spmax + pos + 6);

                                /* %guest */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_guest, scc->cpu_guest, g_itv),
                                          out + pos + 7, outsize + pos + 7, svg_p->dt,
                                          spmin + pos + 7, spmax + pos + 7);

                                /* %gnice */
                                cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                          &offset, ll_sp_value(scp->cpu_guest_nice, scc->cpu_guest_nice, g_itv),
                                          out + pos + 8, outsize + pos + 8, svg_p->dt,
                                          spmin + pos + 8, spmax + pos + 8);

                                j = 9;
                        }
                        else {
                                j = 5;
                        }

                        /* %idle */
                        cpuappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                  &offset,
                                  (scc->cpu_idle < scp->cpu_idle ? 0.0 :
                                   ll_sp_value(scp->cpu_idle, scc->cpu_idle, g_itv)),
                                  out + pos + j, outsize + pos + j, svg_p->dt,
                                  spmin + pos + j, spmax + pos + j);
                }
        }

        if (action & F_END) {
                for (i = 0; (i < a->nr) && (i < a->bitmap->b_size + 1); i++) {

                        /* Should current CPU (including CPU "all") be displayed? */
                        if (!(a->bitmap->b_array[i >> 3] & (1 << (i & 0x07))))
                                /* No */
                                continue;

                        pos = i * 10;
                        if (!i) {
                                /* This is CPU "all" */
                                strcpy(item_name, "all");
                        }
                        else {
                                sprintf(item_name, "%d", i - 1);
                        }

                        if (DISPLAY_CPU_DEF(a->opt_flags)) {
                                draw_activity_graphs(a->g_nr, SVG_BAR_GRAPH,
                                                     title, g_title1, item_name, group1,
                                                     spmin + pos, spmax + pos, out + pos, outsize + pos,
                                                     svg_p, record_hdr);
                        }
                        else {
                                draw_activity_graphs(a->g_nr, SVG_BAR_GRAPH,
                                                     title, g_title2, item_name, group2,
                                                     spmin + pos, spmax + pos, out + pos, outsize + pos,
                                                     svg_p, record_hdr);
                        }
                }

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display task creation and context switch statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_pcsw_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                     unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_pcsw
                *spc = (struct stats_pcsw *) a->buf[curr],
                *spp = (struct stats_pcsw *) a->buf[!curr];
        int group[] = {1, 1};
        char *title[] = {"Switching activity", "Task creation"};
        char *g_title[] = {"cswch/s",
                           "proc/s"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(2, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* Check for min/max values */
                save_extrema(1, 1, 0, (void *) a->buf[curr], (void *) a->buf[!curr],
                             itv, spmin, spmax);
                /* cswch/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->context_switch, spc->context_switch, itv),
                         out, outsize, svg_p->restart);
                /* proc/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->processes, spc->processes, itv),
                         out + 1, outsize + 1, svg_p->restart);
        }

        if (action & F_END) {
                draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH, title, g_title, NULL, group,
                                     spmin, spmax, out, outsize, svg_p, record_hdr);

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display swap statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_swap_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                       unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_swap
                *ssc = (struct stats_swap *) a->buf[curr],
                *ssp = (struct stats_swap *) a->buf[!curr];
        int group[] = {2};
        char *title[] = {"Swap activity"};
        char *g_title[] = {"pswpin/s", "pswpout/s" };
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(2, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* Check for min/max values */
                save_extrema(0, 2, 0, (void *) a->buf[curr], (void *) a->buf[!curr],
                             itv, spmin, spmax);
                /* pswpin/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(ssp->pswpin, ssc->pswpin, itv),
                         out, outsize, svg_p->restart);
                /* pswpout/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(ssp->pswpout, ssc->pswpout, itv),
                         out + 1, outsize + 1, svg_p->restart);
        }

        if (action & F_END) {
                draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH, title, g_title, NULL, group,
                                     spmin, spmax, out, outsize, svg_p, record_hdr);

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display paging statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_paging_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                       unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_paging
                *spc = (struct stats_paging *) a->buf[curr],
                *spp = (struct stats_paging *) a->buf[!curr];
        int group[] = {2, 2, 4};
        char *title[] = {"Paging activity (1)", "Paging activity (2)", "Paging activity (3)"};
        char *g_title[] = {"pgpgin/s", "pgpgout/s",
                           "fault/s", "majflt/s",
                           "pgfree/s", "pgscank/s", "pgscand/s", "pgsteal/s"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(8, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* Check for min/max values */
                save_extrema(0, 8, 0, (void *) a->buf[curr], (void *) a->buf[!curr],
                             itv, spmin, spmax);
                /* pgpgin/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgpgin, spc->pgpgin, itv),
                         out, outsize, svg_p->restart);
                /* pgpgout/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgpgout, spc->pgpgout, itv),
                         out + 1, outsize + 1, svg_p->restart);
                /* fault/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgfault, spc->pgfault, itv),
                         out + 2, outsize + 2, svg_p->restart);
                /* majflt/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgmajfault, spc->pgmajfault, itv),
                         out + 3, outsize + 3, svg_p->restart);
                /* pgfree/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgfree, spc->pgfree, itv),
                         out + 4, outsize + 4, svg_p->restart);
                /* pgscank/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgscan_kswapd, spc->pgscan_kswapd, itv),
                         out + 5, outsize + 5, svg_p->restart);
                /* pgscand/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgscan_direct, spc->pgscan_direct, itv),
                         out + 6, outsize + 6, svg_p->restart);
                /* pgsteal/s */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         S_VALUE(spp->pgsteal, spc->pgsteal, itv),
                         out + 7, outsize + 7, svg_p->restart);
        }

        if (action & F_END) {
                draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH, title, g_title, NULL, group,
                                     spmin, spmax, out, outsize, svg_p, record_hdr);

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display memory statistics in SVG.
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_memory_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                       unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_memory
                *smc = (struct stats_memory *) a->buf[curr];
        int group1a[] = {2, 2};
        int group1b[] = {1, 1};
        int group1c[] = {4, 5};
        int group2a[] = {3};
        int group2b[] = {1, 1};
        char *title1a[] = {"Memory utilization (1)", "Memory utilization (2)"};
        char *title1b[] = {"Memory utilization (3)", "Memory utilization (4)"};
        char *title1c[] = {"Memory utilization (5)", "Memory utilization (6)"};
        char *title2a[] = {"Swap utilization (1)"};
        char *title2b[] = {"Swap utilization (2)", "Swap utilization (3)"};
        char *g_title1a[] = {"MBmemfree", "MBmemused",
                             "MBcached", "MBbuffers"};
        char *g_title1b[] = {"%memused", "%commit"};
        char *g_title1c[] = {"MBcommit", "MBactive", "MBinact", "MBdirty",
                             "MBanonpg", "MBslab", "MBkstack", "MBpgtbl", "MBvmused"};
        char *g_title2a[] = {"MBswpfree", "MBswpused", "MBswpcad"};
        char *g_title2b[] = {"%swpused", "%swpcad"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;
        double tval;
        int i;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(22, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* Check for min/max values */
                save_extrema(0, 16, 0, (void *) a->buf[curr], NULL,
                             0, spmin, spmax);
                /* Compute %memused min/max values */
                tval = smc->tlmkb ? SP_VALUE(smc->frmkb, smc->tlmkb, smc->tlmkb) : 0.0;
                if (tval > *(spmax + 16)) {
                        *(spmax + 16) = tval;
                }
                if (tval < *(spmin + 16)) {
                        *(spmin + 16) = tval;
                }
                /* Compute %commit min/max values */
                tval = (smc->tlmkb + smc->tlskb) ?
                       SP_VALUE(0, smc->comkb, smc->tlmkb + smc->tlskb) : 0.0;
                if (tval > *(spmax + 17)) {
                        *(spmax + 17) = tval;
                }
                if (tval < *(spmin + 17)) {
                        *(spmin + 17) = tval;
                }
                /* Compute %swpused min/max values */
                tval = smc->tlskb ?
                       SP_VALUE(smc->frskb, smc->tlskb, smc->tlskb) : 0.0;
                if (tval > *(spmax + 18)) {
                        *(spmax + 18) = tval;
                }
                if (tval < *(spmin + 18)) {
                        *(spmin + 18) = tval;
                }
                /* Compute %swpcad min/max values */
                tval = (smc->tlskb - smc->frskb) ?
                       SP_VALUE(0, smc->caskb, smc->tlskb - smc->frskb) : 0.0;
                if (tval > *(spmax + 19)) {
                        *(spmax + 19) = tval;
                }
                if (tval < *(spmin + 19)) {
                        *(spmin + 19) = tval;
                }
                /* Compute memused min/max values in MB */
                tval = ((double) (smc->tlmkb - smc->frmkb)) / 1024;
                if (tval > *(spmax + 20)) {
                        *(spmax + 20) = tval;
                }
                if (tval < *(spmin + 20)) {
                        *(spmin + 20) = tval;
                }
                /* Compute swpused min/max values in MB */
                tval = ((double) (smc->tlskb - smc->frskb)) / 1024;
                if (tval > *(spmax + 21)) {
                        *(spmax + 21) = tval;
                }
                if (tval < *(spmin + 21)) {
                        *(spmin + 21) = tval;
                }

                /* MBmemfree */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->frmkb) / 1024,
                         out, outsize, svg_p->restart);
                /* MBmemused */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) (smc->tlmkb - smc->frmkb)) / 1024,
                         out + 1, outsize + 1, svg_p->restart);
                /* MBcached */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->camkb) / 1024,
                          out + 2, outsize + 2, svg_p->restart);
                /* MBbuffers */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->bufkb) / 1024,
                         out + 3, outsize + 3, svg_p->restart);
                /* MBswpfree */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->frskb) / 1024,
                         out + 4, outsize + 4, svg_p->restart);
                /* MBswpused */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) (smc->tlskb - smc->frskb)) / 1024,
                         out + 5, outsize + 5, svg_p->restart);
                /* MBswpcad */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->caskb) / 1024,
                         out + 6, outsize + 6, svg_p->restart);
                /* MBcommit */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->comkb) / 1024,
                         out + 7, outsize + 7, svg_p->restart);
                /* MBactive */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->activekb) / 1024,
                         out + 8, outsize + 8, svg_p->restart);
                /* MBinact */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->inactkb) / 1024,
                         out + 9, outsize + 9, svg_p->restart);
                /* MBdirty */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->dirtykb) / 1024,
                         out + 10, outsize + 10, svg_p->restart);
                /* MBanonpg */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->anonpgkb) / 1024,
                         out + 11, outsize + 11, svg_p->restart);
                /* MBslab */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->slabkb) / 1024,
                         out + 12, outsize + 12, svg_p->restart);
                /* MBkstack */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->kstackkb) / 1024,
                         out + 13, outsize + 13, svg_p->restart);
                /* MBpgtbl */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->pgtblkb) / 1024,
                         out + 14, outsize + 14, svg_p->restart);
                /* MBvmused */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         ((double) smc->vmusedkb) / 1024,
                         out + 15, outsize + 15, svg_p->restart);
                /* %memused */
                brappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         0.0,
                         smc->tlmkb ?
                         SP_VALUE(smc->frmkb, smc->tlmkb, smc->tlmkb) : 0.0,
                         out + 16, outsize + 16, svg_p->dt);
                /* %commit */
                brappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         0.0,
                         (smc->tlmkb + smc->tlskb) ?
                         SP_VALUE(0, smc->comkb, smc->tlmkb + smc->tlskb) : 0.0,
                         out + 17, outsize + 17, svg_p->dt);
                /* %swpused */
                brappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         0.0,
                         smc->tlskb ?
                         SP_VALUE(smc->frskb, smc->tlskb, smc->tlskb) : 0.0,
                         out + 18, outsize + 18, svg_p->dt);
                /* %swpcad */
                brappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         0.0,
                         (smc->tlskb - smc->frskb) ?
                         SP_VALUE(0, smc->caskb, smc->tlskb - smc->frskb) : 0.0,
                         out + 19, outsize + 19, svg_p->dt);
        }

        if (action & F_END) {

                /* Conversion kB -> MB */
                for (i = 0; i < 16; i++) {
                        *(spmin + i) /= 1024;
                        *(spmax + i) /= 1024;
                }

                if (DISPLAY_MEM_AMT(a->opt_flags)) {
                        /* frmkb and tlmkb should be together because they will be drawn on the same view */
                        *(spmax + 3) = *(spmax + 1);
                        *(spmin + 3) = *(spmin + 1);
                        /* Move memused min/max values */
                        *(spmax + 1) = *(spmax + 20);
                        *(spmin + 1) = *(spmin + 20);

                        draw_activity_graphs(2, SVG_LINE_GRAPH, title1a, g_title1a, NULL, group1a,
                                             spmin, spmax, out, outsize, svg_p, record_hdr);
                        draw_activity_graphs(2, SVG_BAR_GRAPH, title1b, g_title1b, NULL, group1b,
                                             spmin + 16, spmax + 16, out + 16, outsize + 16, svg_p, record_hdr);
                        draw_activity_graphs(DISPLAY_MEM_ALL(a->opt_flags) ? 2 : 1,
                                             SVG_LINE_GRAPH, title1c, g_title1c, NULL, group1c,
                                             spmin + 7, spmax + 7, out + 7, outsize + 7, svg_p, record_hdr);
                }

                if (DISPLAY_SWAP(a->opt_flags)) {
                        /* Move swpused min/max values */
                        *(spmax + 5) = *(spmax + 21);
                        *(spmin + 5) = *(spmin + 21);

                        draw_activity_graphs(1, SVG_LINE_GRAPH, title2a, g_title2a, NULL, group2a,
                                             spmin + 4, spmax + 4, out + 4, outsize + 4, svg_p, record_hdr);
                        draw_activity_graphs(2, SVG_BAR_GRAPH, title2b, g_title2b, NULL, group2b,
                                             spmin + 18, spmax + 18, out + 18, outsize + 18, svg_p, record_hdr);
                }

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display queue and load statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_queue_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                      unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_queue
                *sqc = (struct stats_queue *) a->buf[curr];
        int group[] = {2, 3, 1};
        char *title[] = {"Queue length", "Load average", "Task list"};
        char *g_title[] = {"~runq-sz", "~blocked",
                           "ldavg-1", "ldavg-5", "ldavg-15",
                           "~plist-sz"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(6, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* Check for min/max values */
                save_extrema(0, 2, 4, (void *) a->buf[curr], NULL,
                             itv, spmin, spmax);
                /* runq-sz */
                lniappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                          (unsigned long) sqc->nr_running,
                          out, outsize, svg_p->restart);
                /* blocked */
                lniappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                          (unsigned long) sqc->procs_blocked,
                          out + 1, outsize + 1, svg_p->restart);
                /* ldavg-1 */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         (double) sqc->load_avg_1 / 100,
                         out + 2, outsize + 2, svg_p->restart);
                /* ldavg-5 */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         (double) sqc->load_avg_5 / 100,
                         out + 3, outsize + 3, svg_p->restart);
                /* ldavg-15 */
                lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                         (double) sqc->load_avg_15 / 100,
                         out + 4, outsize + 4, svg_p->restart);
                /* plist-sz */
                lniappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                          (unsigned long) sqc->nr_threads,
                          out + 5, outsize + 5, svg_p->restart);
        }

        if (action & F_END) {
                /* Fix min/max values for load average */
                *(spmin + 2) /= 100; *(spmax + 2) /= 100;
                *(spmin + 3) /= 100; *(spmax + 3) /= 100;
                *(spmin + 4) /= 100; *(spmax + 4) /= 100;

                draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH, title, g_title, NULL, group,
                                     spmin, spmax, out, outsize, svg_p, record_hdr);

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display network interfaces statistics in SVG
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_net_dev_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                        unsigned long long itv, struct record_header *record_hdr)
{
        struct stats_net_dev *sndc, *sndp;
        int group1[] = {2, 2, 3};
        int group2[] = {1};
        char *title1[] = {"Network statistics (1)", "Network statistics (2)",
                          "Network statistics (3)"};
        char *title2[] = {"Network statistics (4)"};
        char *g_title1[] = {"rxpck/s", "txpck/s",
                            "rxkB/s", "txkB/s",
                            "rxcmp/s", "txcmp/s", "rxmcst/s"};
        char *g_title2[] = {"%ifutil"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;
        char *item_name;
        double rxkb, txkb, ifutil;
        int i, j, k, pos, restart, *unregistered;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays (#0..7) that will contain the graphs data
                 * and the min/max values.
                 * Also allocate one additional array (#8) for each interface:
                 * out + 8 will contain the interface name,
                 * outsize + 8 will contain a positive value (TRUE) if the interface
                 * has either still not been registered, or has been unregistered.
                 */
                out = allocate_graph_lines(9 * a->nr, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                restart = svg_p->restart;
                /*
                 * Mark previously registered interfaces as now
                 * possibly unregistered for all graphs.
                 */
                for (k = 0; k < a->nr; k++) {
                        unregistered = outsize + k * 9 + 8;
                        if (*unregistered == FALSE) {
                                *unregistered = MAYBE;
                        }
                }

                /* For each network interfaces structure */
                for (i = 0; i < a->nr; i++) {
                        sndc = (struct stats_net_dev *) ((char *) a->buf[curr] + i * a->msize);
                        if (!strcmp(sndc->interface, ""))
                                /* Empty structure: Ignore it */
                                continue;

                        /* Look for corresponding graph */
                        for (k = 0; k < a->nr; k++) {
                                item_name = *(out + k * 9 + 8);
                                if (!strcmp(sndc->interface, item_name))
                                        /* Graph found! */
                                        break;
                        }
                        if (k == a->nr) {
                                /* Graph not found: Look for first free entry */
                                for (k = 0; k < a->nr; k++) {
                                        item_name = *(out + k * 9 + 8);
                                        if (!strcmp(item_name, ""))
                                                break;
                                }
                                if (k == a->nr)
                                        /* No free graph entry: Graph for this item won't be drawn */
                                        continue;
                        }

                        pos = k * 9;
                        unregistered = outsize + pos + 8;

                        j = check_net_dev_reg(a, curr, !curr, i);
                        sndp = (struct stats_net_dev *) ((char *) a->buf[!curr] + j * a->msize);

                        /*
                         * If current interface was marked as previously unregistered,
                         * then set restart variable to TRUE so that the graph will be
                         * discontinuous, and mark it as now registered.
                         */
                        if (*unregistered == TRUE) {
                                restart = TRUE;
                        }
                        *unregistered = FALSE;

                        if (!item_name[0]) {
                                /* Save network interface name (if not already done) */
                                strncpy(item_name, sndc->interface, CHUNKSIZE);
                                item_name[CHUNKSIZE - 1] = '\0';
                        }

                        /* Check for min/max values */
                        save_extrema(7, 0, 0, (void *) sndc, (void *) sndp,
                                     itv, spmin + pos, spmax + pos);

                        rxkb = S_VALUE(sndp->rx_bytes, sndc->rx_bytes, itv);
                        txkb = S_VALUE(sndp->tx_bytes, sndc->tx_bytes, itv);
                        ifutil = compute_ifutil(sndc, rxkb, txkb);
                        if (ifutil < *(spmin + pos + 7)) {
                                *(spmin + pos + 7) = ifutil;
                        }
                        if (ifutil > *(spmax + pos + 7)) {
                                *(spmax + pos + 7) = ifutil;
                        }

                        /* rxpck/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 S_VALUE(sndp->rx_packets, sndc->rx_packets, itv),
                                 out + pos, outsize + pos, restart);

                        /* txpck/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 S_VALUE(sndp->tx_packets, sndc->tx_packets, itv),
                                 out + pos + 1, outsize + pos + 1, restart);

                        /* rxkB/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 rxkb / 1024,
                                 out + pos + 2, outsize + pos + 2, restart);

                        /* txkB/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 txkb / 1024,
                                 out + pos + 3, outsize + pos + 3, restart);

                        /* rxcmp/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 S_VALUE(sndp->rx_compressed, sndc->rx_compressed, itv),
                                 out + pos + 4, outsize + pos + 4, restart);

                        /* txcmp/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 S_VALUE(sndp->tx_compressed, sndc->tx_compressed, itv),
                                 out + pos + 5, outsize + pos + 5, restart);

                        /* rxmcst/s */
                        lnappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 S_VALUE(sndp->multicast, sndc->multicast, itv),
                                 out + pos + 6, outsize + pos + 6, restart);

                        /* %ifutil */
                        brappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                 0.0, ifutil,
                                 out + pos + 7, outsize + pos + 7, svg_p->dt);
                }

                /* Mark interfaces not seen here as now unregistered */
                for (k = 0; k < a->nr; k++) {
                        unregistered = outsize + k * 9 + 8;
                        if (*unregistered != FALSE) {
                                *unregistered = TRUE;
                        }
                }
        }

        if (action & F_END) {
                for (i = 0; i < a->nr; i++) {
                        /*
                         * Check if there is something to display.
                         * Don't test sndc->interface because maybe the network
                         * interface has been registered later.
                         */
                        pos = i * 9;
                        if (!**(out + pos))
                                continue;

                        /* Recalculate min and max values in kB, not in B */
                        *(spmin + pos + 2) /= 1024;
                        *(spmax + pos + 2) /= 1024;
                        *(spmin + pos + 3) /= 1024;
                        *(spmax + pos + 3) /= 1024;

                        item_name = *(out + pos + 8);
                        draw_activity_graphs(a->g_nr - 1, SVG_LINE_GRAPH,
                                             title1, g_title1, item_name, group1,
                                             spmin + pos, spmax + pos, out + pos, outsize + pos,
                                             svg_p, record_hdr);
                        draw_activity_graphs(1, SVG_BAR_GRAPH,
                                             title2, g_title2, item_name, group2,
                                             spmin + pos + 7, spmax + pos + 7, out + pos + 7, outsize + pos + 7,
                                             svg_p, record_hdr);
                }

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display CPU frequency statistics in SVG.
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_pwr_cpufreq_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                            unsigned long long g_itv, struct record_header *record_hdr)
{
        struct stats_pwr_cpufreq *spc, *spp;
        int group[] = {1};
        char *title[] = {"CPU frequency"};
        char *g_title[] = {"MHz"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;
        char item_name[8];
        int i;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(a->nr, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* For each CPU */
                for (i = 0; (i < a->nr) && (i < a->bitmap->b_size + 1); i++) {

                        spc = (struct stats_pwr_cpufreq *) ((char *) a->buf[curr]  + i * a->msize);
                        spp = (struct stats_pwr_cpufreq *) ((char *) a->buf[!curr]  + i * a->msize);

                        /* Should current CPU (including CPU "all") be displayed? */
                        if (!(a->bitmap->b_array[i >> 3] & (1 << (i & 0x07))))
                                /* No */
                                continue;

                        /* MHz */
                        recappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                  ((double) spp->cpufreq) / 100,
                                  ((double) spc->cpufreq) / 100,
                                  out + i, outsize + i, svg_p->restart, svg_p->dt,
                                  spmin + i, spmax + i);
                }
        }

        if (action & F_END) {
                for (i = 0; (i < a->nr) && (i < a->bitmap->b_size + 1); i++) {

                        /* Should current CPU (including CPU "all") be displayed? */
                        if (!(a->bitmap->b_array[i >> 3] & (1 << (i & 0x07))))
                                /* No */
                                continue;

                        if (!i) {
                                /* This is CPU "all" */
                                strcpy(item_name, "all");
                        }
                        else {
                                sprintf(item_name, "%d", i - 1);
                        }

                        draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH,
                                             title, g_title, item_name, group,
                                             spmin + i, spmax + i, out + i, outsize + i,
                                             svg_p, record_hdr);
                }

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}

/*
 ***************************************************************************
 * Display fan statistics in SVG.
 *
 * IN:
 * @a           Activity structure with statistics.
 * @curr        Index in array for current sample statistics.
 * @action      Action expected from current function.
 * @svg_p       SVG specific parameters: Current graph number (.@graph_no),
 *              flag indicating that a restart record has been previously
 *              found (.@restart) and a pointer on a record header structure
 *              (.@record_hdr) containing the first stats sample.
 * @itv         Interval of time in jiffies (only with F_MAIN action).
 * @record_hdr  Pointer on record header of current stats sample.
 ***************************************************************************
 */
__print_funct_t svg_print_pwr_fan_stats(struct activity *a, int curr, int action, struct svg_parm *svg_p,
                                        unsigned long long g_itv, struct record_header *record_hdr)
{
        struct stats_pwr_fan *spc, *spp;
        int group[] = {1};
        char *title[] = {"Fan speed"};
        char *g_title[] = {"~rpm"};
        static double *spmin, *spmax;
        static char **out;
        static int *outsize;
        char item_name[MAX_SENSORS_DEV_LEN + 8];
        int i;

        if (action & F_BEGIN) {
                /*
                 * Allocate arrays that will contain the graphs data
                 * and the min/max values.
                 */
                out = allocate_graph_lines(a->nr, &outsize, &spmin, &spmax);
        }

        if (action & F_MAIN) {
                /* For each fan */
                for (i = 0; i < a->nr; i++) {

                        spc = (struct stats_pwr_fan *) ((char *) a->buf[curr]  + i * a->msize);
                        spp = (struct stats_pwr_fan *) ((char *) a->buf[!curr]  + i * a->msize);

                        /* rpm */
                        recappend(record_hdr->ust_time - svg_p->record_hdr->ust_time,
                                  (double) spp->rpm,
                                  (double) spc->rpm,
                                  out + i, outsize + i, svg_p->restart, svg_p->dt,
                                  spmin + i, spmax + i);
                }
        }

        if (action & F_END) {
                for (i = 0; i < a->nr; i++) {

                        spc = (struct stats_pwr_fan *) ((char *) a->buf[curr]  + i * a->msize);

                        snprintf(item_name, MAX_SENSORS_DEV_LEN + 8, "%d: %s", i + 1, spc->device);
                        item_name[MAX_SENSORS_DEV_LEN + 7] = '\0';

                        draw_activity_graphs(a->g_nr, SVG_LINE_GRAPH,
                                             title, g_title, item_name, group,
                                             spmin + i, spmax + i, out + i, outsize + i,
                                             svg_p, record_hdr);
                }

                /* Free remaining structures */
                free_graphs(out, outsize, spmin, spmax);
        }
}