2 * mpstat: per-processor statistics
3 * (C) 2000-2015 by Sebastien GODARD (sysstat <at> orange.fr)
5 ***************************************************************************
6 * This program is free software; you can redistribute it and/or modify it *
7 * under the terms of the GNU General Public License as published by the *
8 * Free Software Foundation; either version 2 of the License, or (at your *
9 * option) any later version. *
11 * This program is distributed in the hope that it will be useful, but *
12 * WITHOUT ANY WARRANTY; without the implied warranty of MERCHANTABILITY *
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
16 * You should have received a copy of the GNU General Public License along *
17 * with this program; if not, write to the Free Software Foundation, Inc., *
18 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
19 ***************************************************************************
29 #include <sys/utsname.h>
40 #define _(string) gettext(string)
42 #define _(string) (string)
45 #define SCCSID "@(#)sysstat-" VERSION ": " __FILE__ " compiled " __DATE__ " " __TIME__
46 char *sccsid(void) { return (SCCSID); }
48 unsigned long long uptime[3] = {0, 0, 0};
49 unsigned long long uptime0[3] = {0, 0, 0};
51 /* NOTE: Use array of _char_ for bitmaps to avoid endianness problems...*/
52 unsigned char *cpu_bitmap; /* Bit 0: Global; Bit 1: 1st proc; etc. */
54 /* Structures used to store stats */
55 struct stats_cpu *st_cpu[3];
56 struct stats_irq *st_irq[3];
57 struct stats_irqcpu *st_irqcpu[3];
58 struct stats_irqcpu *st_softirqcpu[3];
60 struct tm mp_tstamp[3];
63 unsigned int actflags = 0;
65 unsigned int flags = 0;
67 /* Interval and count parameters */
68 long interval = -1, count = 0;
70 /* Nb of processors on the machine */
72 /* Nb of interrupts per processor */
74 /* Nb of soft interrupts per processor */
75 int softirqcpu_nr = 0;
77 struct sigaction alrm_act, int_act;
78 int sigint_caught = 0;
81 ***************************************************************************
82 * Print usage and exit
85 * @progname Name of sysstat command
86 ***************************************************************************
88 void usage(char *progname)
90 fprintf(stderr, _("Usage: %s [ options ] [ <interval> [ <count> ] ]\n"),
93 fprintf(stderr, _("Options are:\n"
94 "[ -A ] [ -u ] [ -V ] [ -I { SUM | CPU | SCPU | ALL } ]\n"
95 "[ -P { <cpu> [,...] | ON | ALL } ]\n"));
100 ***************************************************************************
101 * SIGALRM signal handler. No need to reset the handler here.
104 * @sig Signal number.
105 ***************************************************************************
107 void alarm_handler(int sig)
113 ***************************************************************************
114 * SIGINT signal handler.
117 * @sig Signal number.
118 **************************************************************************
120 void int_handler(int sig)
126 ***************************************************************************
127 * Allocate stats structures and cpu bitmap.
130 * @nr_cpus Number of CPUs. This is the real number of available CPUs + 1
131 * because we also have to allocate a structure for CPU 'all'.
132 ***************************************************************************
134 void salloc_mp_struct(int nr_cpus)
138 for (i = 0; i < 3; i++) {
140 if ((st_cpu[i] = (struct stats_cpu *) malloc(STATS_CPU_SIZE * nr_cpus))
145 memset(st_cpu[i], 0, STATS_CPU_SIZE * nr_cpus);
147 if ((st_irq[i] = (struct stats_irq *) malloc(STATS_IRQ_SIZE * nr_cpus))
152 memset(st_irq[i], 0, STATS_IRQ_SIZE * nr_cpus);
154 if ((st_irqcpu[i] = (struct stats_irqcpu *) malloc(STATS_IRQCPU_SIZE * nr_cpus * irqcpu_nr))
159 memset(st_irqcpu[i], 0, STATS_IRQCPU_SIZE * nr_cpus * irqcpu_nr);
161 if ((st_softirqcpu[i] = (struct stats_irqcpu *) malloc(STATS_IRQCPU_SIZE * nr_cpus * softirqcpu_nr))
166 memset(st_softirqcpu[i], 0, STATS_IRQCPU_SIZE * nr_cpus * softirqcpu_nr);
169 if ((cpu_bitmap = (unsigned char *) malloc((nr_cpus >> 3) + 1)) == NULL) {
173 memset(cpu_bitmap, 0, (nr_cpus >> 3) + 1);
177 ***************************************************************************
178 * Free structures and bitmap.
179 ***************************************************************************
181 void sfree_mp_struct(void)
185 for (i = 0; i < 3; i++) {
189 free(st_softirqcpu[i]);
196 ***************************************************************************
197 * Display per CPU statistics.
200 * @st_ic Array for per-CPU statistics.
201 * @ic_nr Number of interrupts (hard or soft) per CPU.
202 * @dis TRUE if a header line must be printed.
203 * @itv Interval value.
204 * @prev Position in array where statistics used as reference are.
205 * Stats used as reference may be the previous ones read, or
206 * the very first ones when calculating the average.
207 * @curr Position in array where current statistics will be saved.
208 * @prev_string String displayed at the beginning of a header line. This is
209 * the timestamp of the previous sample, or "Average" when
210 * displaying average stats.
211 * @curr_string String displayed at the beginning of current sample stats.
212 * This is the timestamp of the current sample, or "Average"
213 * when displaying average stats.
214 ***************************************************************************
216 void write_irqcpu_stats(struct stats_irqcpu *st_ic[], int ic_nr, int dis,
217 unsigned long long itv, int prev, int curr,
218 char *prev_string, char *curr_string)
220 struct stats_cpu *scc;
221 int j = 0, offset, cpu, colwidth[NR_IRQS];
222 struct stats_irqcpu *p, *q, *p0, *q0;
225 * Check if number of interrupts has changed.
226 * NB: A null interval value indicates that we are
227 * displaying statistics since system startup.
229 if (!dis && interval) {
231 p0 = st_ic[curr] + j;
232 if (p0->irq_name[0] != '\0') {
233 q0 = st_ic[prev] + j;
234 if (strcmp(p0->irq_name, q0->irq_name)) {
235 /* These are two different irq */
241 while ((j > 0) && (j <= ic_nr));
244 if (dis || (j < 0)) {
246 printf("\n%-11s CPU", prev_string);
247 for (j = 0; j < ic_nr; j++) {
248 p0 = st_ic[curr] + j;
249 if (p0->irq_name[0] != '\0') { /* Nb of irq per proc may have varied... */
250 printf(" %8s/s", p0->irq_name);
256 /* Calculate column widths */
257 for (j = 0; j < ic_nr; j++) {
258 p0 = st_ic[curr] + j;
259 if (p0->irq_name[0] != '\0') {
260 /* Width is IRQ name + 2 for the trailing "/s" */
261 colwidth[j] = strlen(p0->irq_name) + 2;
263 * Normal space for printing a number is 11 chars
264 * (space + 10 digits including the period).
266 if (colwidth[j] < 10) {
272 for (cpu = 1; cpu <= cpu_nr; cpu++) {
274 scc = st_cpu[curr] + cpu;
277 * Check if we want stats about this CPU.
278 * CPU must have been explicitly selected using option -P,
279 * else we display every CPU.
281 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))) && USE_P_OPTION(flags))
284 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
285 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
286 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
288 /* Offline CPU found */
290 if (DISPLAY_ONLINE_CPU(flags))
294 printf("%-11s %3d", curr_string, cpu - 1);
296 for (j = 0; j < ic_nr; j++) {
297 p0 = st_ic[curr] + j; /* irq field set only for proc #0 */
299 * An empty string for irq name means it is a remaining interrupt
300 * which is no longer used, for example because the
301 * number of interrupts has decreased in /proc/interrupts.
303 if (p0->irq_name[0] != '\0') {
304 q0 = st_ic[prev] + j;
308 * If we want stats for the time since system startup,
309 * we have p0->irq != q0->irq, since q0 structure is
310 * completely set to zero.
312 if (strcmp(p0->irq_name, q0->irq_name) && interval) {
315 q0 = st_ic[prev] + offset;
316 if (strcmp(p0->irq_name, q0->irq_name) && (j + 1 < ic_nr))
318 q0 = st_ic[prev] + offset;
321 if (!strcmp(p0->irq_name, q0->irq_name) || !interval) {
322 p = st_ic[curr] + (cpu - 1) * ic_nr + j;
323 q = st_ic[prev] + (cpu - 1) * ic_nr + offset;
324 cprintf_f(1, colwidth[j], 2,
325 S_VALUE(q->interrupt, p->interrupt, itv));
336 ***************************************************************************
337 * Core function used to display statistics.
340 * @prev Position in array where statistics used as reference are.
341 * Stats used as reference may be the previous ones read, or
342 * the very first ones when calculating the average.
343 * @curr Position in array where statistics for current sample are.
344 * @dis TRUE if a header line must be printed.
345 * @prev_string String displayed at the beginning of a header line. This is
346 * the timestamp of the previous sample, or "Average" when
347 * displaying average stats.
348 * @curr_string String displayed at the beginning of current sample stats.
349 * This is the timestamp of the current sample, or "Average"
350 * when displaying average stats.
351 ***************************************************************************
353 void write_stats_core(int prev, int curr, int dis,
354 char *prev_string, char *curr_string)
356 struct stats_cpu *scc, *scp;
357 unsigned long long itv, pc_itv, g_itv;
361 TEST_STDOUT(STDOUT_FILENO);
363 /* Compute time interval */
364 g_itv = get_interval(uptime[prev], uptime[curr]);
366 /* Reduce interval value to one processor */
368 itv = get_interval(uptime0[prev], uptime0[curr]);
374 /* Print CPU stats */
375 if (DISPLAY_CPU(actflags)) {
377 printf("\n%-11s CPU %%usr %%nice %%sys %%iowait %%irq "
378 "%%soft %%steal %%guest %%gnice %%idle\n",
382 /* Check if we want global stats among all proc */
383 if (*cpu_bitmap & 1) {
385 printf("%-11s all", curr_string);
388 (st_cpu[curr]->cpu_user - st_cpu[curr]->cpu_guest) <
389 (st_cpu[prev]->cpu_user - st_cpu[prev]->cpu_guest) ?
391 ll_sp_value(st_cpu[prev]->cpu_user - st_cpu[prev]->cpu_guest,
392 st_cpu[curr]->cpu_user - st_cpu[curr]->cpu_guest,
394 (st_cpu[curr]->cpu_nice - st_cpu[curr]->cpu_guest_nice) <
395 (st_cpu[prev]->cpu_nice - st_cpu[prev]->cpu_guest_nice) ?
397 ll_sp_value(st_cpu[prev]->cpu_nice - st_cpu[prev]->cpu_guest_nice,
398 st_cpu[curr]->cpu_nice - st_cpu[curr]->cpu_guest_nice,
400 ll_sp_value(st_cpu[prev]->cpu_sys,
401 st_cpu[curr]->cpu_sys,
403 ll_sp_value(st_cpu[prev]->cpu_iowait,
404 st_cpu[curr]->cpu_iowait,
406 ll_sp_value(st_cpu[prev]->cpu_hardirq,
407 st_cpu[curr]->cpu_hardirq,
409 ll_sp_value(st_cpu[prev]->cpu_softirq,
410 st_cpu[curr]->cpu_softirq,
412 ll_sp_value(st_cpu[prev]->cpu_steal,
413 st_cpu[curr]->cpu_steal,
415 ll_sp_value(st_cpu[prev]->cpu_guest,
416 st_cpu[curr]->cpu_guest,
418 ll_sp_value(st_cpu[prev]->cpu_guest_nice,
419 st_cpu[curr]->cpu_guest_nice,
421 (st_cpu[curr]->cpu_idle < st_cpu[prev]->cpu_idle) ?
423 ll_sp_value(st_cpu[prev]->cpu_idle,
424 st_cpu[curr]->cpu_idle,
429 for (cpu = 1; cpu <= cpu_nr; cpu++) {
431 scc = st_cpu[curr] + cpu;
432 scp = st_cpu[prev] + cpu;
434 /* Check if we want stats about this proc */
435 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
439 * If the CPU is offline then it is omited from /proc/stat
440 * and the sum of all values is zero.
441 * (Remember that guest/guest_nice times are already included in
444 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
445 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
446 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
448 if (!DISPLAY_ONLINE_CPU(flags)) {
449 printf("%-11s %4d", curr_string, cpu - 1);
451 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
457 printf("%-11s %4d", curr_string, cpu - 1);
459 /* Recalculate itv for current proc */
460 pc_itv = get_per_cpu_interval(scc, scp);
464 * If the CPU is tickless then there is no change in CPU values
465 * but the sum of values is not zero.
468 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 100.0);
474 (scc->cpu_user - scc->cpu_guest) < (scp->cpu_user - scp->cpu_guest) ?
476 ll_sp_value(scp->cpu_user - scp->cpu_guest,
477 scc->cpu_user - scc->cpu_guest,
479 (scc->cpu_nice - scc->cpu_guest_nice) < (scp->cpu_nice - scp->cpu_guest_nice) ?
481 ll_sp_value(scp->cpu_nice - scp->cpu_guest_nice,
482 scc->cpu_nice - scc->cpu_guest_nice,
484 ll_sp_value(scp->cpu_sys,
487 ll_sp_value(scp->cpu_iowait,
490 ll_sp_value(scp->cpu_hardirq,
493 ll_sp_value(scp->cpu_softirq,
496 ll_sp_value(scp->cpu_steal,
499 ll_sp_value(scp->cpu_guest,
502 ll_sp_value(scp->cpu_guest_nice,
505 (scc->cpu_idle < scp->cpu_idle) ?
507 ll_sp_value(scp->cpu_idle,
515 /* Print total number of interrupts per processor */
516 if (DISPLAY_IRQ_SUM(actflags)) {
517 struct stats_irq *sic, *sip;
520 printf("\n%-11s CPU intr/s\n", prev_string);
523 if (*cpu_bitmap & 1) {
524 printf("%-11s all", curr_string);
526 S_VALUE(st_irq[prev]->irq_nr, st_irq[curr]->irq_nr, itv));
530 for (cpu = 1; cpu <= cpu_nr; cpu++) {
532 sic = st_irq[curr] + cpu;
533 sip = st_irq[prev] + cpu;
535 scc = st_cpu[curr] + cpu;
536 scp = st_cpu[prev] + cpu;
538 /* Check if we want stats about this proc */
539 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
542 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
543 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
544 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
546 /* This is an offline CPU */
548 if (!DISPLAY_ONLINE_CPU(flags)) {
549 printf("%-11s %4d", curr_string, cpu - 1);
550 cprintf_f(1, 9, 2, 0.0);
556 printf("%-11s %4d", curr_string, cpu - 1);
558 /* Recalculate itv for current proc */
559 pc_itv = get_per_cpu_interval(scc, scp);
562 /* This is a tickless CPU */
563 cprintf_f(1, 9, 2, 0.0);
568 S_VALUE(sip->irq_nr, sic->irq_nr, itv));
574 if (DISPLAY_IRQ_CPU(actflags)) {
575 write_irqcpu_stats(st_irqcpu, irqcpu_nr, dis, itv, prev, curr,
576 prev_string, curr_string);
579 if (DISPLAY_SOFTIRQS(actflags)) {
580 write_irqcpu_stats(st_softirqcpu, softirqcpu_nr, dis, itv, prev, curr,
581 prev_string, curr_string);
584 /* Fix CPU counter values for every offline CPU */
585 for (cpu = 1; cpu <= cpu_nr; cpu++) {
587 scc = st_cpu[curr] + cpu;
588 scp = st_cpu[prev] + cpu;
590 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
591 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
592 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
595 * Set current struct fields (which have been set to zero)
596 * to values from previous iteration. Hence their values won't
597 * jump from zero when the CPU comes back online.
605 ***************************************************************************
606 * Print statistics average.
609 * @curr Position in array where statistics for current sample are.
610 * @dis TRUE if a header line must be printed.
611 ***************************************************************************
613 void write_stats_avg(int curr, int dis)
617 strncpy(string, _("Average:"), 16);
619 write_stats_core(2, curr, dis, string, string);
623 ***************************************************************************
627 * @curr Position in array where statistics for current sample are.
628 * @dis TRUE if a header line must be printed.
629 ***************************************************************************
631 void write_stats(int curr, int dis)
633 char cur_time[2][16];
635 /* Get previous timestamp */
636 strftime(cur_time[!curr], sizeof(cur_time[!curr]), "%X", &(mp_tstamp[!curr]));
638 /* Get current timestamp */
639 strftime(cur_time[curr], sizeof(cur_time[curr]), "%X", &(mp_tstamp[curr]));
641 write_stats_core(!curr, curr, dis, cur_time[!curr], cur_time[curr]);
645 ***************************************************************************
646 * Read stats from /proc/interrupts or /proc/softirqs.
649 * @file /proc file to read (interrupts or softirqs).
650 * @ic_nr Number of interrupts (hard or soft) per CPU.
651 * @curr Position in array where current statistics will be saved.
654 * @st_ic Array for per-CPU statistics.
655 ***************************************************************************
657 void read_interrupts_stat(char *file, struct stats_irqcpu *st_ic[], int ic_nr, int curr)
660 struct stats_irq *st_irq_i;
661 struct stats_irqcpu *p;
662 char *line = NULL, *li;
663 unsigned long irq = 0;
665 int cpu_index[cpu_nr], index = 0, len;
668 for (cpu = 0; cpu < cpu_nr; cpu++) {
669 st_irq_i = st_irq[curr] + cpu + 1;
670 st_irq_i->irq_nr = 0;
673 if ((fp = fopen(file, "r")) != NULL) {
675 SREALLOC(line, char, INTERRUPTS_LINE + 11 * cpu_nr);
678 * Parse header line to see which CPUs are online
680 while (fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) {
682 while (((cp = strstr(next, "CPU")) != NULL) && (index < cpu_nr)) {
683 cpu = strtol(cp + 3, &next, 10);
684 cpu_index[index++] = cpu;
687 /* Header line found */
691 while ((fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) &&
694 /* Skip over "<irq>:" */
695 if ((cp = strchr(line, ':')) == NULL)
696 /* Chr ':' not found */
700 p = st_ic[curr] + irq;
706 len = strcspn(li, ":");
707 if (len >= MAX_IRQ_LEN) {
708 len = MAX_IRQ_LEN - 1;
710 strncpy(p->irq_name, li, len);
711 p->irq_name[len] = '\0';
713 for (cpu = 0; cpu < index; cpu++) {
714 p = st_ic[curr] + cpu_index[cpu] * ic_nr + irq;
715 st_irq_i = st_irq[curr] + cpu_index[cpu] + 1;
717 * No need to set (st_irqcpu + cpu * irqcpu_nr)->irq:
718 * This is the same as st_irqcpu->irq.
720 p->interrupt = strtoul(cp, &next, 10);
721 st_irq_i->irq_nr += p->interrupt;
732 while (irq < ic_nr) {
733 /* Nb of interrupts per processor has changed */
734 p = st_ic[curr] + irq;
735 p->irq_name[0] = '\0'; /* This value means this is a dummy interrupt */
741 ***************************************************************************
742 * Main loop: Read stats from the relevant sources, and display them.
745 * @dis_hdr Set to TRUE if the header line must always be printed.
746 * @rows Number of rows of screen.
747 ***************************************************************************
749 void rw_mpstat_loop(int dis_hdr, int rows)
751 struct stats_cpu *scc;
753 int curr = 1, dis = 1;
754 unsigned long lines = rows;
756 /* Dont buffer data if redirected to a pipe */
757 setbuf(stdout, NULL);
762 * Init uptime0. So if /proc/uptime cannot fill it,
763 * this will be done by /proc/stat.
766 read_uptime(&(uptime0[0]));
768 read_stat_cpu(st_cpu[0], cpu_nr + 1, &(uptime[0]), &(uptime0[0]));
770 if (DISPLAY_IRQ_SUM(actflags)) {
771 read_stat_irq(st_irq[0], 1);
774 if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
775 /* Read this file to display int per CPU or total nr of int per CPU */
776 read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, 0);
779 if (DISPLAY_SOFTIRQS(actflags)) {
780 read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, 0);
784 /* Display since boot time */
785 mp_tstamp[1] = mp_tstamp[0];
786 memset(st_cpu[1], 0, STATS_CPU_SIZE * (cpu_nr + 1));
787 memset(st_irq[1], 0, STATS_IRQ_SIZE * (cpu_nr + 1));
788 memset(st_irqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
789 if (DISPLAY_SOFTIRQS(actflags)) {
790 memset(st_softirqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
792 write_stats(0, DISP_HDR);
796 /* Set a handler for SIGALRM */
797 memset(&alrm_act, 0, sizeof(alrm_act));
798 alrm_act.sa_handler = alarm_handler;
799 sigaction(SIGALRM, &alrm_act, NULL);
802 /* Save the first stats collected. Will be used to compute the average */
803 mp_tstamp[2] = mp_tstamp[0];
804 uptime[2] = uptime[0];
805 uptime0[2] = uptime0[0];
806 memcpy(st_cpu[2], st_cpu[0], STATS_CPU_SIZE * (cpu_nr + 1));
807 memcpy(st_irq[2], st_irq[0], STATS_IRQ_SIZE * (cpu_nr + 1));
808 memcpy(st_irqcpu[2], st_irqcpu[0], STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
809 if (DISPLAY_SOFTIRQS(actflags)) {
810 memcpy(st_softirqcpu[2], st_softirqcpu[0],
811 STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
814 /* Set a handler for SIGINT */
815 memset(&int_act, 0, sizeof(int_act));
816 int_act.sa_handler = int_handler;
817 sigaction(SIGINT, &int_act, NULL);
822 /* SIGINT signal caught during first interval: Exit immediately */
827 * Resetting the structure not needed since every fields will be set.
828 * Exceptions are per-CPU structures: Some of them may not be filled
829 * if corresponding processor is disabled (offline). We set them to zero
830 * to be able to distinguish between offline and tickless CPUs.
832 for (cpu = 1; cpu <= cpu_nr; cpu++) {
833 scc = st_cpu[curr] + cpu;
834 memset(scc, 0, STATS_CPU_SIZE);
838 get_localtime(&(mp_tstamp[curr]), 0);
843 read_uptime(&(uptime0[curr]));
845 read_stat_cpu(st_cpu[curr], cpu_nr + 1, &(uptime[curr]), &(uptime0[curr]));
847 if (DISPLAY_IRQ_SUM(actflags)) {
848 read_stat_irq(st_irq[curr], 1);
851 if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
852 read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, curr);
855 if (DISPLAY_SOFTIRQS(actflags)) {
856 read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, curr);
867 write_stats(curr, dis);
878 /* SIGINT signal caught => Display average stats */
880 printf("\n"); /* Skip "^C" displayed on screen */
889 /* Write stats average */
890 write_stats_avg(curr, dis_hdr);
894 ***************************************************************************
895 * Main entry to the program
896 ***************************************************************************
898 int main(int argc, char **argv)
900 int opt = 0, i, actset = FALSE;
901 struct utsname header;
907 /* Init National Language Support */
911 /* Init color strings */
917 /* What is the highest processor number on this machine? */
918 cpu_nr = get_cpu_nr(~0, TRUE);
920 /* Calculate number of interrupts per processor */
921 irqcpu_nr = get_irqcpu_nr(INTERRUPTS, NR_IRQS, cpu_nr) +
923 /* Calculate number of soft interrupts per processor */
924 softirqcpu_nr = get_irqcpu_nr(SOFTIRQS, NR_IRQS, cpu_nr) +
928 * cpu_nr: a value of 2 means there are 2 processors (0 and 1).
929 * In this case, we have to allocate 3 structures: global, proc0 and proc1.
931 salloc_mp_struct(cpu_nr + 1);
933 while (++opt < argc) {
935 if (!strcmp(argv[opt], "-I")) {
938 if (!strcmp(argv[opt], K_SUM)) {
939 /* Display total number of interrupts per CPU */
940 actflags |= M_D_IRQ_SUM;
942 else if (!strcmp(argv[opt], K_CPU)) {
943 /* Display interrupts per CPU */
944 actflags |= M_D_IRQ_CPU;
946 else if (!strcmp(argv[opt], K_SCPU)) {
947 /* Display soft interrupts per CPU */
948 actflags |= M_D_SOFTIRQS;
950 else if (!strcmp(argv[opt], K_ALL)) {
951 actflags |= M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
962 else if (!strcmp(argv[opt], "-P")) {
963 /* '-P ALL' can be used on UP machines */
968 for (t = strtok(argv[opt], ","); t; t = strtok(NULL, ",")) {
969 if (!strcmp(t, K_ALL) || !strcmp(t, K_ON)) {
974 * Set bit for every processor.
975 * Also indicate to display stats for CPU 'all'.
977 memset(cpu_bitmap, 0xff, ((cpu_nr + 1) >> 3) + 1);
978 if (!strcmp(t, K_ON)) {
979 /* Display stats only for online CPU */
984 if (strspn(t, DIGITS) != strlen(t)) {
987 i = atoi(t); /* Get cpu number */
989 fprintf(stderr, _("Not that many processors!\n"));
993 *(cpu_bitmap + (i >> 3)) |= 1 << (i & 0x07);
1002 else if (!strncmp(argv[opt], "-", 1)) {
1003 for (i = 1; *(argv[opt] + i); i++) {
1005 switch (*(argv[opt] + i)) {
1008 actflags |= M_D_CPU + M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
1010 /* Select all processors */
1011 flags |= F_P_OPTION;
1012 memset(cpu_bitmap, 0xff, ((cpu_nr + 1) >> 3) + 1);
1017 actflags |= M_D_CPU;
1021 /* Print version number */
1031 else if (interval < 0) {
1033 if (strspn(argv[opt], DIGITS) != strlen(argv[opt])) {
1036 interval = atol(argv[opt]);
1043 else if (count <= 0) {
1044 /* Get count value */
1045 if ((strspn(argv[opt], DIGITS) != strlen(argv[opt])) ||
1049 count = atol(argv[opt]);
1060 /* Default: Display CPU */
1062 actflags |= M_D_CPU;
1065 if (count_bits(&actflags, sizeof(unsigned int)) > 1) {
1069 if (!USE_P_OPTION(flags)) {
1070 /* Option -P not used: Set bit 0 (global stats among all proc) */
1077 /* Get window size */
1078 rows = get_win_height();
1081 /* Interval not set => display stats since boot time */
1086 get_localtime(&(mp_tstamp[0]), 0);
1088 /* Get system name, release number and hostname */
1090 print_gal_header(&(mp_tstamp[0]), header.sysname, header.release,
1091 header.nodename, header.machine, get_cpu_nr(~0, FALSE));
1094 rw_mpstat_loop(dis_hdr, rows);
1096 /* Free structures */