2 * mpstat: per-processor statistics
3 * (C) 2000-2014 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;
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 for (cpu = 1; cpu <= cpu_nr; cpu++) {
258 scc = st_cpu[curr] + cpu;
261 * Check if we want stats about this CPU.
262 * CPU must have been explicitly selected using option -P,
263 * else we display every CPU.
265 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))) && USE_P_OPTION(flags))
268 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
269 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
270 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
272 /* Offline CPU found */
274 if (DISPLAY_ONLINE_CPU(flags))
278 printf("%-11s %3d", curr_string, cpu - 1);
280 for (j = 0; j < ic_nr; j++) {
281 p0 = st_ic[curr] + j; /* irq field set only for proc #0 */
283 * An empty string for irq name means it is a remaining interrupt
284 * which is no longer used, for example because the
285 * number of interrupts has decreased in /proc/interrupts.
287 if (p0->irq_name[0] != '\0') {
288 q0 = st_ic[prev] + j;
292 * If we want stats for the time since system startup,
293 * we have p0->irq != q0->irq, since q0 structure is
294 * completely set to zero.
296 if (strcmp(p0->irq_name, q0->irq_name) && interval) {
299 q0 = st_ic[prev] + offset;
300 if (strcmp(p0->irq_name, q0->irq_name) && (j + 1 < ic_nr))
302 q0 = st_ic[prev] + offset;
305 if (!strcmp(p0->irq_name, q0->irq_name) || !interval) {
306 p = st_ic[curr] + (cpu - 1) * ic_nr + j;
307 q = st_ic[prev] + (cpu - 1) * ic_nr + offset;
309 S_VALUE(q->interrupt, p->interrupt, itv));
320 ***************************************************************************
321 * Core function used to display statistics.
324 * @prev Position in array where statistics used as reference are.
325 * Stats used as reference may be the previous ones read, or
326 * the very first ones when calculating the average.
327 * @curr Position in array where statistics for current sample are.
328 * @dis TRUE if a header line must be printed.
329 * @prev_string String displayed at the beginning of a header line. This is
330 * the timestamp of the previous sample, or "Average" when
331 * displaying average stats.
332 * @curr_string String displayed at the beginning of current sample stats.
333 * This is the timestamp of the current sample, or "Average"
334 * when displaying average stats.
335 ***************************************************************************
337 void write_stats_core(int prev, int curr, int dis,
338 char *prev_string, char *curr_string)
340 struct stats_cpu *scc, *scp;
341 unsigned long long itv, pc_itv, g_itv;
345 TEST_STDOUT(STDOUT_FILENO);
347 /* Compute time interval */
348 g_itv = get_interval(uptime[prev], uptime[curr]);
350 /* Reduce interval value to one processor */
352 itv = get_interval(uptime0[prev], uptime0[curr]);
358 /* Print CPU stats */
359 if (DISPLAY_CPU(actflags)) {
361 printf("\n%-11s CPU %%usr %%nice %%sys %%iowait %%irq "
362 "%%soft %%steal %%guest %%gnice %%idle\n",
366 /* Check if we want global stats among all proc */
367 if (*cpu_bitmap & 1) {
369 printf("%-11s all", curr_string);
371 printf(" %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f\n",
372 (st_cpu[curr]->cpu_user - st_cpu[curr]->cpu_guest) <
373 (st_cpu[prev]->cpu_user - st_cpu[prev]->cpu_guest) ?
375 ll_sp_value(st_cpu[prev]->cpu_user - st_cpu[prev]->cpu_guest,
376 st_cpu[curr]->cpu_user - st_cpu[curr]->cpu_guest,
378 (st_cpu[curr]->cpu_nice - st_cpu[curr]->cpu_guest_nice) <
379 (st_cpu[prev]->cpu_nice - st_cpu[prev]->cpu_guest_nice) ?
381 ll_sp_value(st_cpu[prev]->cpu_nice - st_cpu[prev]->cpu_guest_nice,
382 st_cpu[curr]->cpu_nice - st_cpu[curr]->cpu_guest_nice,
384 ll_sp_value(st_cpu[prev]->cpu_sys,
385 st_cpu[curr]->cpu_sys,
387 ll_sp_value(st_cpu[prev]->cpu_iowait,
388 st_cpu[curr]->cpu_iowait,
390 ll_sp_value(st_cpu[prev]->cpu_hardirq,
391 st_cpu[curr]->cpu_hardirq,
393 ll_sp_value(st_cpu[prev]->cpu_softirq,
394 st_cpu[curr]->cpu_softirq,
396 ll_sp_value(st_cpu[prev]->cpu_steal,
397 st_cpu[curr]->cpu_steal,
399 ll_sp_value(st_cpu[prev]->cpu_guest,
400 st_cpu[curr]->cpu_guest,
402 ll_sp_value(st_cpu[prev]->cpu_guest_nice,
403 st_cpu[curr]->cpu_guest_nice,
405 (st_cpu[curr]->cpu_idle < st_cpu[prev]->cpu_idle) ?
407 ll_sp_value(st_cpu[prev]->cpu_idle,
408 st_cpu[curr]->cpu_idle,
412 for (cpu = 1; cpu <= cpu_nr; cpu++) {
414 scc = st_cpu[curr] + cpu;
415 scp = st_cpu[prev] + cpu;
417 /* Check if we want stats about this proc */
418 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
422 * If the CPU is offline then it is omited from /proc/stat
423 * and the sum of all values is zero.
424 * (Remember that guest/guest_nice times are already included in
427 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
428 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
429 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
431 if (!DISPLAY_ONLINE_CPU(flags)) {
433 " %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f"
434 " %6.2f %6.2f %6.2f %6.2f\n",
435 curr_string, cpu - 1,
436 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
441 printf("%-11s %4d", curr_string, cpu - 1);
443 /* Recalculate itv for current proc */
444 pc_itv = get_per_cpu_interval(scc, scp);
448 * If the CPU is tickless then there is no change in CPU values
449 * but the sum of values is not zero.
451 printf(" %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f"
452 " %6.2f %6.2f %6.2f %6.2f\n",
453 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 100.0);
457 printf(" %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f"
458 " %6.2f %6.2f %6.2f %6.2f\n",
459 (scc->cpu_user - scc->cpu_guest) < (scp->cpu_user - scp->cpu_guest) ?
461 ll_sp_value(scp->cpu_user - scp->cpu_guest,
462 scc->cpu_user - scc->cpu_guest,
464 (scc->cpu_nice - scc->cpu_guest_nice) < (scp->cpu_nice - scp->cpu_guest_nice) ?
466 ll_sp_value(scp->cpu_nice - scp->cpu_guest_nice,
467 scc->cpu_nice - scc->cpu_guest_nice,
469 ll_sp_value(scp->cpu_sys,
472 ll_sp_value(scp->cpu_iowait,
475 ll_sp_value(scp->cpu_hardirq,
478 ll_sp_value(scp->cpu_softirq,
481 ll_sp_value(scp->cpu_steal,
484 ll_sp_value(scp->cpu_guest,
487 ll_sp_value(scp->cpu_guest_nice,
490 (scc->cpu_idle < scp->cpu_idle) ?
492 ll_sp_value(scp->cpu_idle,
499 /* Print total number of interrupts per processor */
500 if (DISPLAY_IRQ_SUM(actflags)) {
501 struct stats_irq *sic, *sip;
504 printf("\n%-11s CPU intr/s\n", prev_string);
507 if (*cpu_bitmap & 1) {
508 printf("%-11s all %9.2f\n", curr_string,
509 ll_s_value(st_irq[prev]->irq_nr, st_irq[curr]->irq_nr, itv));
512 for (cpu = 1; cpu <= cpu_nr; cpu++) {
514 sic = st_irq[curr] + cpu;
515 sip = st_irq[prev] + cpu;
517 scc = st_cpu[curr] + cpu;
518 scp = st_cpu[prev] + cpu;
520 /* Check if we want stats about this proc */
521 if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
524 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
525 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
526 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
528 /* This is an offline CPU */
530 if (!DISPLAY_ONLINE_CPU(flags)) {
533 curr_string, cpu - 1,
539 printf("%-11s %4d", curr_string, cpu - 1);
541 /* Recalculate itv for current proc */
542 pc_itv = get_per_cpu_interval(scc, scp);
545 /* This is a tickless CPU */
546 printf(" %9.2f\n", 0.0);
550 ll_s_value(sip->irq_nr, sic->irq_nr, itv));
555 if (DISPLAY_IRQ_CPU(actflags)) {
556 write_irqcpu_stats(st_irqcpu, irqcpu_nr, dis, itv, prev, curr,
557 prev_string, curr_string);
560 if (DISPLAY_SOFTIRQS(actflags)) {
561 write_irqcpu_stats(st_softirqcpu, softirqcpu_nr, dis, itv, prev, curr,
562 prev_string, curr_string);
565 /* Fix CPU counter values for every offline CPU */
566 for (cpu = 1; cpu <= cpu_nr; cpu++) {
568 scc = st_cpu[curr] + cpu;
569 scp = st_cpu[prev] + cpu;
571 if ((scc->cpu_user + scc->cpu_nice + scc->cpu_sys +
572 scc->cpu_iowait + scc->cpu_idle + scc->cpu_steal +
573 scc->cpu_hardirq + scc->cpu_softirq) == 0) {
576 * Set current struct fields (which have been set to zero)
577 * to values from previous iteration. Hence their values won't
578 * jump from zero when the CPU comes back online.
586 ***************************************************************************
587 * Print statistics average.
590 * @curr Position in array where statistics for current sample are.
591 * @dis TRUE if a header line must be printed.
592 ***************************************************************************
594 void write_stats_avg(int curr, int dis)
598 strncpy(string, _("Average:"), 16);
600 write_stats_core(2, curr, dis, string, string);
604 ***************************************************************************
608 * @curr Position in array where statistics for current sample are.
609 * @dis TRUE if a header line must be printed.
610 ***************************************************************************
612 void write_stats(int curr, int dis)
614 char cur_time[2][16];
616 /* Get previous timestamp */
617 strftime(cur_time[!curr], sizeof(cur_time[!curr]), "%X", &(mp_tstamp[!curr]));
619 /* Get current timestamp */
620 strftime(cur_time[curr], sizeof(cur_time[curr]), "%X", &(mp_tstamp[curr]));
622 write_stats_core(!curr, curr, dis, cur_time[!curr], cur_time[curr]);
626 ***************************************************************************
627 * Read stats from /proc/interrupts or /proc/softirqs.
630 * @file /proc file to read (interrupts or softirqs).
631 * @ic_nr Number of interrupts (hard or soft) per CPU.
632 * @curr Position in array where current statistics will be saved.
635 * @st_ic Array for per-CPU statistics.
636 ***************************************************************************
638 void read_interrupts_stat(char *file, struct stats_irqcpu *st_ic[], int ic_nr, int curr)
641 struct stats_irq *st_irq_i;
642 struct stats_irqcpu *p;
643 char *line = NULL, *li;
644 unsigned long irq = 0;
646 int cpu_index[cpu_nr], index = 0, len;
649 for (cpu = 0; cpu < cpu_nr; cpu++) {
650 st_irq_i = st_irq[curr] + cpu + 1;
651 st_irq_i->irq_nr = 0;
654 if ((fp = fopen(file, "r")) != NULL) {
656 SREALLOC(line, char, INTERRUPTS_LINE + 11 * cpu_nr);
659 * Parse header line to see which CPUs are online
661 while (fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) {
663 while (((cp = strstr(next, "CPU")) != NULL) && (index < cpu_nr)) {
664 cpu = strtol(cp + 3, &next, 10);
665 cpu_index[index++] = cpu;
668 /* Header line found */
672 while ((fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) &&
675 /* Skip over "<irq>:" */
676 if ((cp = strchr(line, ':')) == NULL)
677 /* Chr ':' not found */
681 p = st_ic[curr] + irq;
687 len = strcspn(li, ":");
688 if (len >= MAX_IRQ_LEN) {
689 len = MAX_IRQ_LEN - 1;
691 strncpy(p->irq_name, li, len);
692 p->irq_name[len] = '\0';
694 for (cpu = 0; cpu < index; cpu++) {
695 p = st_ic[curr] + cpu_index[cpu] * ic_nr + irq;
696 st_irq_i = st_irq[curr] + cpu_index[cpu] + 1;
698 * No need to set (st_irqcpu + cpu * irqcpu_nr)->irq:
699 * This is the same as st_irqcpu->irq.
701 p->interrupt = strtoul(cp, &next, 10);
702 st_irq_i->irq_nr += p->interrupt;
713 while (irq < ic_nr) {
714 /* Nb of interrupts per processor has changed */
715 p = st_ic[curr] + irq;
716 p->irq_name[0] = '\0'; /* This value means this is a dummy interrupt */
722 ***************************************************************************
723 * Main loop: Read stats from the relevant sources, and display them.
726 * @dis_hdr Set to TRUE if the header line must always be printed.
727 * @rows Number of rows of screen.
728 ***************************************************************************
730 void rw_mpstat_loop(int dis_hdr, int rows)
732 struct stats_cpu *scc;
734 int curr = 1, dis = 1;
735 unsigned long lines = rows;
737 /* Dont buffer data if redirected to a pipe */
738 setbuf(stdout, NULL);
743 * Init uptime0. So if /proc/uptime cannot fill it,
744 * this will be done by /proc/stat.
747 read_uptime(&(uptime0[0]));
749 read_stat_cpu(st_cpu[0], cpu_nr + 1, &(uptime[0]), &(uptime0[0]));
751 if (DISPLAY_IRQ_SUM(actflags)) {
752 read_stat_irq(st_irq[0], 1);
755 if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
756 /* Read this file to display int per CPU or total nr of int per CPU */
757 read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, 0);
760 if (DISPLAY_SOFTIRQS(actflags)) {
761 read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, 0);
765 /* Display since boot time */
766 mp_tstamp[1] = mp_tstamp[0];
767 memset(st_cpu[1], 0, STATS_CPU_SIZE * (cpu_nr + 1));
768 memset(st_irq[1], 0, STATS_IRQ_SIZE * (cpu_nr + 1));
769 memset(st_irqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
770 if (DISPLAY_SOFTIRQS(actflags)) {
771 memset(st_softirqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
773 write_stats(0, DISP_HDR);
777 /* Set a handler for SIGALRM */
778 memset(&alrm_act, 0, sizeof(alrm_act));
779 alrm_act.sa_handler = (void *) alarm_handler;
780 sigaction(SIGALRM, &alrm_act, NULL);
783 /* Save the first stats collected. Will be used to compute the average */
784 mp_tstamp[2] = mp_tstamp[0];
785 uptime[2] = uptime[0];
786 uptime0[2] = uptime0[0];
787 memcpy(st_cpu[2], st_cpu[0], STATS_CPU_SIZE * (cpu_nr + 1));
788 memcpy(st_irq[2], st_irq[0], STATS_IRQ_SIZE * (cpu_nr + 1));
789 memcpy(st_irqcpu[2], st_irqcpu[0], STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
790 if (DISPLAY_SOFTIRQS(actflags)) {
791 memcpy(st_softirqcpu[2], st_softirqcpu[0],
792 STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
795 /* Set a handler for SIGINT */
796 memset(&int_act, 0, sizeof(int_act));
797 int_act.sa_handler = (void *) int_handler;
798 sigaction(SIGINT, &int_act, NULL);
803 /* SIGINT signal caught during first interval: Exit immediately */
808 * Resetting the structure not needed since every fields will be set.
809 * Exceptions are per-CPU structures: Some of them may not be filled
810 * if corresponding processor is disabled (offline). We set them to zero
811 * to be able to distinguish between offline and tickless CPUs.
813 for (cpu = 1; cpu <= cpu_nr; cpu++) {
814 scc = st_cpu[curr] + cpu;
815 memset(scc, 0, STATS_CPU_SIZE);
819 get_localtime(&(mp_tstamp[curr]), 0);
824 read_uptime(&(uptime0[curr]));
826 read_stat_cpu(st_cpu[curr], cpu_nr + 1, &(uptime[curr]), &(uptime0[curr]));
828 if (DISPLAY_IRQ_SUM(actflags)) {
829 read_stat_irq(st_irq[curr], 1);
832 if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
833 read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, curr);
836 if (DISPLAY_SOFTIRQS(actflags)) {
837 read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, curr);
848 write_stats(curr, dis);
859 /* SIGINT signal caught => Display average stats */
861 printf("\n"); /* Skip "^C" displayed on screen */
870 /* Write stats average */
871 write_stats_avg(curr, dis_hdr);
875 ***************************************************************************
876 * Main entry to the program
877 ***************************************************************************
879 int main(int argc, char **argv)
881 int opt = 0, i, actset = FALSE;
882 struct utsname header;
888 /* Init National Language Support */
895 /* What is the highest processor number on this machine? */
896 cpu_nr = get_cpu_nr(~0, TRUE);
898 /* Calculate number of interrupts per processor */
899 irqcpu_nr = get_irqcpu_nr(INTERRUPTS, NR_IRQS, cpu_nr) +
901 /* Calculate number of soft interrupts per processor */
902 softirqcpu_nr = get_irqcpu_nr(SOFTIRQS, NR_IRQS, cpu_nr) +
906 * cpu_nr: a value of 2 means there are 2 processors (0 and 1).
907 * In this case, we have to allocate 3 structures: global, proc0 and proc1.
909 salloc_mp_struct(cpu_nr + 1);
911 while (++opt < argc) {
913 if (!strcmp(argv[opt], "-I")) {
916 if (!strcmp(argv[opt], K_SUM)) {
917 /* Display total number of interrupts per CPU */
918 actflags |= M_D_IRQ_SUM;
920 else if (!strcmp(argv[opt], K_CPU)) {
921 /* Display interrupts per CPU */
922 actflags |= M_D_IRQ_CPU;
924 else if (!strcmp(argv[opt], K_SCPU)) {
925 /* Display soft interrupts per CPU */
926 actflags |= M_D_SOFTIRQS;
928 else if (!strcmp(argv[opt], K_ALL)) {
929 actflags |= M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
940 else if (!strcmp(argv[opt], "-P")) {
941 /* '-P ALL' can be used on UP machines */
946 for (t = strtok(argv[opt], ","); t; t = strtok(NULL, ",")) {
947 if (!strcmp(t, K_ALL) || !strcmp(t, K_ON)) {
952 * Set bit for every processor.
953 * Also indicate to display stats for CPU 'all'.
955 memset(cpu_bitmap, 0xff, ((cpu_nr + 1) >> 3) + 1);
956 if (!strcmp(t, K_ON)) {
957 /* Display stats only for online CPU */
962 if (strspn(t, DIGITS) != strlen(t)) {
965 i = atoi(t); /* Get cpu number */
967 fprintf(stderr, _("Not that many processors!\n"));
971 *(cpu_bitmap + (i >> 3)) |= 1 << (i & 0x07);
980 else if (!strncmp(argv[opt], "-", 1)) {
981 for (i = 1; *(argv[opt] + i); i++) {
983 switch (*(argv[opt] + i)) {
986 actflags |= M_D_CPU + M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
988 /* Select all processors */
990 memset(cpu_bitmap, 0xff, ((cpu_nr + 1) >> 3) + 1);
999 /* Print version number */
1009 else if (interval < 0) {
1011 if (strspn(argv[opt], DIGITS) != strlen(argv[opt])) {
1014 interval = atol(argv[opt]);
1021 else if (count <= 0) {
1022 /* Get count value */
1023 if ((strspn(argv[opt], DIGITS) != strlen(argv[opt])) ||
1027 count = atol(argv[opt]);
1038 /* Default: Display CPU */
1040 actflags |= M_D_CPU;
1043 if (count_bits(&actflags, sizeof(unsigned int)) > 1) {
1047 if (!USE_P_OPTION(flags)) {
1048 /* Option -P not used: Set bit 0 (global stats among all proc) */
1055 /* Get window size */
1056 rows = get_win_height();
1059 /* Interval not set => display stats since boot time */
1064 get_localtime(&(mp_tstamp[0]), 0);
1066 /* Get system name, release number and hostname */
1068 print_gal_header(&(mp_tstamp[0]), header.sysname, header.release,
1069 header.nodename, header.machine, get_cpu_nr(~0, FALSE));
1072 rw_mpstat_loop(dis_hdr, rows);
1074 /* Free structures */