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/*
* mpstat: per-processor statistics
* (C) 2000-2020 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 <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <dirent.h>
#include <ctype.h>
#include <sys/utsname.h>
#include "version.h"
#include "mpstat.h"
#include "rd_stats.h"
#include "count.h"
#include <locale.h> /* For setlocale() */
#ifdef USE_NLS
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
#ifdef USE_SCCSID
#define SCCSID "@(#)sysstat-" VERSION ": " __FILE__ " compiled " __DATE__ " " __TIME__
char *sccsid(void) { return (SCCSID); }
#endif
unsigned long long uptime_cs[3] = {0, 0, 0};
/* NOTE: Use array of _char_ for bitmaps to avoid endianness problems...*/
unsigned char *cpu_bitmap; /* Bit 0: Global; Bit 1: 1st proc; etc. */
unsigned char *node_bitmap; /* Bit 0: Global; Bit 1: 1st NUMA node; etc. */
/* Structures used to save CPU and NUMA nodes CPU stats */
struct stats_cpu *st_cpu[3];
struct stats_cpu *st_node[3];
/*
* Structure used to save total number of interrupts received
* among all CPU and for each CPU.
*/
struct stats_irq *st_irq[3];
/*
* Structures used to save, for each interrupt, the number
* received by each CPU.
*/
struct stats_irqcpu *st_irqcpu[3];
struct stats_irqcpu *st_softirqcpu[3];
/*
* Number of CPU per node, e.g.:
* cpu_per_node[0]: total nr of CPU (this is node "all")
* cpu_per_node[1]: nr of CPU for node 0
* etc.
*/
int *cpu_per_node;
/*
* Node number the CPU belongs to, e.g.:
* cpu2node[0]: node nr for CPU 0
*/
int *cpu2node;
/* CPU topology */
struct cpu_topology *st_cpu_topology;
struct tm mp_tstamp[3];
/* Activity flag */
unsigned int actflags = 0;
unsigned int flags = 0;
/* Interval and count parameters */
long interval = -1, count = 0;
/* Number of decimal places */
int dplaces_nr = -1;
/*
* Nb of processors on the machine.
* A value of 2 means there are 2 processors (0 and 1).
*/
int cpu_nr = 0;
/*
* Highest NUMA node number found on the machine.
* A value of 0 means node 0 (one node).
* A value of -1 means no nodes found.
* We have: node_nr < cpu_nr (see get_node_placement() function).
*/
int node_nr = -1;
/* Nb of interrupts per processor */
int irqcpu_nr = 0;
/* Nb of soft interrupts per processor */
int softirqcpu_nr = 0;
struct sigaction alrm_act, int_act;
int sigint_caught = 0;
/*
***************************************************************************
* Print usage and exit
*
* IN:
* @progname Name of sysstat command
***************************************************************************
*/
void usage(char *progname)
{
fprintf(stderr, _("Usage: %s [ options ] [ <interval> [ <count> ] ]\n"),
progname);
fprintf(stderr, _("Options are:\n"
"[ -A ] [ -n ] [ -u ] [ -V ]\n"
"[ -I { SUM | CPU | SCPU | ALL } ] [ -N { <node_list> | ALL } ]\n"
"[ --dec={ 0 | 1 | 2 } ] [ -o JSON ] [ -P { <cpu_list> | ALL } ]\n"));
exit(1);
}
/*
***************************************************************************
* SIGALRM signal handler. No need to reset the handler here.
*
* IN:
* @sig Signal number.
***************************************************************************
*/
void alarm_handler(int sig)
{
alarm(interval);
}
/*
***************************************************************************
* SIGINT signal handler.
*
* IN:
* @sig Signal number.
**************************************************************************
*/
void int_handler(int sig)
{
sigint_caught = 1;
}
/*
***************************************************************************
* Allocate stats structures and cpu bitmap. Also do it for NUMA nodes
* (although the machine may not be a NUMA one). Assume that the number of
* nodes is lower or equal than that of CPU.
*
* IN:
* @nr_cpus Number of CPUs. This is the real number of available CPUs + 1
* because we also have to allocate a structure for CPU 'all'.
***************************************************************************
*/
void salloc_mp_struct(int nr_cpus)
{
int i;
for (i = 0; i < 3; i++) {
if ((st_cpu[i] = (struct stats_cpu *) malloc(STATS_CPU_SIZE * nr_cpus))
== NULL) {
perror("malloc");
exit(4);
}
memset(st_cpu[i], 0, STATS_CPU_SIZE * nr_cpus);
if ((st_node[i] = (struct stats_cpu *) malloc(STATS_CPU_SIZE * nr_cpus))
== NULL) {
perror("malloc");
exit(4);
}
memset(st_node[i], 0, STATS_CPU_SIZE * nr_cpus);
if ((st_irq[i] = (struct stats_irq *) malloc(STATS_IRQ_SIZE * nr_cpus))
== NULL) {
perror("malloc");
exit(4);
}
memset(st_irq[i], 0, STATS_IRQ_SIZE * nr_cpus);
if ((st_irqcpu[i] = (struct stats_irqcpu *) malloc(STATS_IRQCPU_SIZE * nr_cpus * irqcpu_nr))
== NULL) {
perror("malloc");
exit(4);
}
memset(st_irqcpu[i], 0, STATS_IRQCPU_SIZE * nr_cpus * irqcpu_nr);
if ((st_softirqcpu[i] = (struct stats_irqcpu *) malloc(STATS_IRQCPU_SIZE * nr_cpus * softirqcpu_nr))
== NULL) {
perror("malloc");
exit(4);
}
memset(st_softirqcpu[i], 0, STATS_IRQCPU_SIZE * nr_cpus * softirqcpu_nr);
}
if ((cpu_bitmap = (unsigned char *) malloc((nr_cpus >> 3) + 1)) == NULL) {
perror("malloc");
exit(4);
}
memset(cpu_bitmap, 0, (nr_cpus >> 3) + 1);
if ((node_bitmap = (unsigned char *) malloc((nr_cpus >> 3) + 1)) == NULL) {
perror("malloc");
exit(4);
}
memset(node_bitmap, 0, (nr_cpus >> 3) + 1);
if ((cpu_per_node = (int *) malloc(sizeof(int) * nr_cpus)) == NULL) {
perror("malloc");
exit(4);
}
if ((cpu2node = (int *) malloc(sizeof(int) * nr_cpus)) == NULL) {
perror("malloc");
exit(4);
}
if ((st_cpu_topology = (struct cpu_topology *) malloc(sizeof(struct cpu_topology) * nr_cpus)) == NULL) {
perror("malloc");
exit(4);
}
}
/*
***************************************************************************
* Free structures and bitmap.
***************************************************************************
*/
void sfree_mp_struct(void)
{
int i;
for (i = 0; i < 3; i++) {
free(st_cpu[i]);
free(st_node[i]);
free(st_irq[i]);
free(st_irqcpu[i]);
free(st_softirqcpu[i]);
}
free(cpu_bitmap);
free(node_bitmap);
free(cpu_per_node);
free(cpu2node);
}
/*
***************************************************************************
* Get node placement (which node each CPU belongs to, and total number of
* CPU that each node has).
*
* IN:
* @nr_cpus Number of CPU on this machine.
*
* OUT:
* @cpu_per_node Number of CPU per node.
* @cpu2node The node the CPU belongs to.
*
* RETURNS:
* Highest node number found (e.g., 0 means node 0).
* A value of -1 means no nodes have been found.
***************************************************************************
*/
int get_node_placement(int nr_cpus, int cpu_per_node[], int cpu2node[])
{
DIR *dir;
struct dirent *drd;
char line[MAX_PF_NAME];
int cpu, node, hi_node_nr = -1;
/* Init number of CPU per node */
memset(cpu_per_node, 0, sizeof(int) * (nr_cpus + 1));
/* CPU belongs to no node by default */
memset(cpu2node, -1, sizeof(int) * nr_cpus);
/* This is node "all" */
cpu_per_node[0] = nr_cpus;
for (cpu = 0; cpu < nr_cpus; cpu++) {
snprintf(line, sizeof(line), "%s/cpu%d", SYSFS_DEVCPU, cpu);
line[sizeof(line) - 1] = '\0';
/* Open relevant /sys directory */
if ((dir = opendir(line)) == NULL)
return -1;
/* Get current file entry */
while ((drd = readdir(dir)) != NULL) {
if (!strncmp(drd->d_name, "node", 4) && isdigit(drd->d_name[4])) {
node = atoi(drd->d_name + 4);
if ((node >= nr_cpus) || (node < 0)) {
/* Assume we cannot have more nodes than CPU */
closedir(dir);
return -1;
}
cpu_per_node[node + 1]++;
cpu2node[cpu] = node;
if (node > hi_node_nr) {
hi_node_nr = node;
}
/* Node placement found for current CPU: Go to next CPU directory */
break;
}
}
/* Close directory */
closedir(dir);
}
return hi_node_nr;
}
/*
***************************************************************************
* Read system logical topology: Socket number for each logical core is read
* from the /sys/devices/system/cpu/cpu{N}/topology/physical_package_id file,
* and the logical core id number is the first number read from the
* /sys/devices/system/cpu/cpu{N}/topology/thread_siblings_list file.
* Don't use /sys/devices/system/cpu/cpu{N}/topology/core_id as this is the
* physical core id (seems to be different from the number displayed by lscpu).
*
* IN:
* @nr_cpus Number of CPU on this machine.
* @cpu_topo Structures where socket and core id numbers will be saved.
*
* OUT:
* @cpu_topo Structures where socket and core id numbers have been saved.
***************************************************************************
*/
void read_topology(int nr_cpus, struct cpu_topology *cpu_topo)
{
struct cpu_topology *cpu_topo_i;
FILE *fp;
char filename[MAX_PF_NAME];
int cpu, rc;
/* Init system topology */
memset(st_cpu_topology, 0, sizeof(struct cpu_topology) * nr_cpus);
for (cpu = 0; cpu < nr_cpus; cpu++) {
cpu_topo_i = cpu_topo + cpu;
/* Read current CPU's socket number */
snprintf(filename, sizeof(filename), "%s/cpu%d/%s", SYSFS_DEVCPU, cpu, PHYS_PACK_ID);
filename[sizeof(filename) - 1] = '\0';
if ((fp = fopen(filename, "r")) != NULL) {
rc = fscanf(fp, "%d", &cpu_topo_i->phys_package_id);
fclose(fp);
if (rc < 1) {
cpu_topo_i->phys_package_id = -1;
}
}
/* Read current CPU's logical core id number */
snprintf(filename, sizeof(filename), "%s/cpu%d/%s", SYSFS_DEVCPU, cpu, THREAD_SBL_LST);
filename[sizeof(filename) - 1] = '\0';
if ((fp = fopen(filename, "r")) != NULL) {
rc = fscanf(fp, "%d", &cpu_topo_i->logical_core_id);
fclose(fp);
if (rc < 1) {
cpu_topo_i->logical_core_id = -1;
}
}
}
}
/*
***************************************************************************
* Compute node statistics: Split CPU statistics among nodes.
*
* IN:
* @src Structure containing CPU stats to add.
*
* OUT:
* @dest Structure containing global CPU stats.
***************************************************************************
*/
void add_cpu_stats(struct stats_cpu *dest, struct stats_cpu *src)
{
dest->cpu_user += src->cpu_user;
dest->cpu_nice += src->cpu_nice;
dest->cpu_sys += src->cpu_sys;
dest->cpu_idle += src->cpu_idle;
dest->cpu_iowait += src->cpu_iowait;
dest->cpu_hardirq += src->cpu_hardirq;
dest->cpu_softirq += src->cpu_softirq;
dest->cpu_steal += src->cpu_steal;
dest->cpu_guest += src->cpu_guest;
dest->cpu_guest_nice += src->cpu_guest_nice;
}
/*
***************************************************************************
* Compute node statistics: Split CPU statistics among nodes.
*
* IN:
* @prev Index in array where stats used as reference are.
* @curr Index in array for current sample statistics.
*
* OUT:
* @st_node Array where CPU stats for each node have been saved.
***************************************************************************
*/
void set_node_cpu_stats(int prev, int curr)
{
int cpu;
unsigned long long tot_jiffies_p;
struct stats_cpu *scp, *scc, *snp, *snc;
struct stats_cpu *scc_all = st_cpu[curr];
struct stats_cpu *scp_all = st_cpu[prev];
struct stats_cpu *snc_all = st_node[curr];
struct stats_cpu *snp_all = st_node[prev];
/* Reset structures */
memset(st_node[prev], 0, STATS_CPU_SIZE * (cpu_nr + 1));
memset(st_node[curr], 0, STATS_CPU_SIZE * (cpu_nr + 1));
/* Node 'all' is the same as CPU 'all' */
*snp_all = *scp_all;
*snc_all = *scc_all;
/* Individual nodes */
for (cpu = 0; cpu < cpu_nr; cpu++) {
scc = st_cpu[curr] + cpu + 1;
scp = st_cpu[prev] + cpu + 1;
snp = st_node[prev] + cpu2node[cpu] + 1;
snc = st_node[curr] + cpu2node[cpu] + 1;
tot_jiffies_p = scp->cpu_user + scp->cpu_nice +
scp->cpu_sys + scp->cpu_idle +
scp->cpu_iowait + scp->cpu_hardirq +
scp->cpu_steal + scp->cpu_softirq;
if ((tot_jiffies_p == 0) && (interval != 0))
/*
* CPU has just come back online with no ref from
* previous iteration: Skip it.
*/
continue;
add_cpu_stats(snp, scp);
add_cpu_stats(snc, scc);
}
}
/*
***************************************************************************
* Compute global CPU statistics as the sum of individual CPU ones, and
* calculate interval for global CPU.
* Also identify offline CPU.
*
* IN:
* @prev Index in array where stats used as reference are.
* @curr Index in array for current sample statistics.
* @offline_cpu_bitmap
* CPU bitmap for offline CPU.
*
* OUT:
* @offline_cpu_bitmap
* CPU bitmap with offline CPU.
*
* RETURNS:
* Interval for global CPU.
***************************************************************************
*/
unsigned long long get_global_cpu_mpstats(int prev, int curr,
unsigned char offline_cpu_bitmap[])
{
int i;
unsigned long long tot_jiffies_c, tot_jiffies_p;
unsigned long long deltot_jiffies = 0;
struct stats_cpu *scc, *scp;
struct stats_cpu *scc_all = st_cpu[curr];
struct stats_cpu *scp_all = st_cpu[prev];
/*
* For UP machines we keep the values read from global CPU line in /proc/stat.
* Also look for offline CPU: They won't be displayed, and some of their values may
* have to be modified.
*/
if (cpu_nr > 1) {
memset(scc_all, 0, sizeof(struct stats_cpu));
memset(scp_all, 0, sizeof(struct stats_cpu));
}
else {
/* This is a UP machine */
return get_per_cpu_interval(st_cpu[curr], st_cpu[prev]);
}
for (i = 1; i <= cpu_nr; i++) {
scc = st_cpu[curr] + i;
scp = st_cpu[prev] + i;
/*
* Compute the total number of jiffies spent by current processor.
* NB: Don't add cpu_guest/cpu_guest_nice because cpu_user/cpu_nice
* already include them.
*/
tot_jiffies_c = scc->cpu_user + scc->cpu_nice +
scc->cpu_sys + scc->cpu_idle +
scc->cpu_iowait + scc->cpu_hardirq +
scc->cpu_steal + scc->cpu_softirq;
tot_jiffies_p = scp->cpu_user + scp->cpu_nice +
scp->cpu_sys + scp->cpu_idle +
scp->cpu_iowait + scp->cpu_hardirq +
scp->cpu_steal + scp->cpu_softirq;
/*
* 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.
*/
if (tot_jiffies_c == 0) {
/*
* CPU is currently offline.
* 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.
* Note that this workaround no longer fully applies with recent kernels,
* as I have noticed that when a CPU comes back online, some fields
* restart from their previous value (e.g. user, nice, system)
* whereas others restart from zero (idle, iowait)! To deal with this,
* the get_per_cpu_interval() function will set these previous values
* to zero if necessary.
*/
*scc = *scp;
/*
* Mark CPU as offline to not display it
* (and thus it will not be confused with a tickless CPU).
*/
offline_cpu_bitmap[i >> 3] |= 1 << (i & 0x07);
}
if ((tot_jiffies_p == 0) && (interval != 0)) {
/*
* CPU has just come back online.
* Unfortunately, no reference values are available
* from a previous iteration, probably because it was
* already offline when the first sample has been taken.
* So don't display that CPU to prevent "jump-from-zero"
* output syndrome, and don't take it into account for CPU "all".
* NB: Test for interval != 0 to make sure we don't want stats
* since boot time.
*/
offline_cpu_bitmap[i >> 3] |= 1 << (i & 0x07);
continue;
}
/*
* Get interval for current CPU and add it to global CPU.
* Note: Previous idle and iowait values (saved in scp) may be modified here.
*/
deltot_jiffies += get_per_cpu_interval(scc, scp);
add_cpu_stats(scc_all, scc);
add_cpu_stats(scp_all, scp);
}
return deltot_jiffies;
}
/*
***************************************************************************
* Display CPU statistics in plain format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
* @offline_cpu_bitmap
* CPU bitmap for offline CPU.
***************************************************************************
*/
void write_plain_cpu_stats(int dis, unsigned long long deltot_jiffies, int prev, int curr,
char *prev_string, char *curr_string, unsigned char offline_cpu_bitmap[])
{
int i;
struct stats_cpu *scc, *scp;
struct cpu_topology *cpu_topo_i;
if (dis) {
printf("\n%-11s CPU", prev_string);
if (DISPLAY_TOPOLOGY(flags)) {
printf(" CORE SOCK NODE");
}
printf(" %%usr %%nice %%sys %%iowait %%irq "
"%%soft %%steal %%guest %%gnice %%idle\n");
}
/*
* Now display CPU statistics (including CPU "all"),
* except for offline CPU or CPU that the user doesn't want to see.
*/
for (i = 0; i <= cpu_nr; i++) {
/* Check if we want stats about this proc */
if (!(*(cpu_bitmap + (i >> 3)) & (1 << (i & 0x07))) ||
offline_cpu_bitmap[i >> 3] & (1 << (i & 0x07)))
continue;
scc = st_cpu[curr] + i;
scp = st_cpu[prev] + i;
printf("%-11s", curr_string);
if (i == 0) {
/* This is CPU "all" */
cprintf_in(IS_STR, " %s", " all", 0);
if (DISPLAY_TOPOLOGY(flags)) {
printf(" ");
}
}
else {
cprintf_in(IS_INT, " %4d", "", i - 1);
if (DISPLAY_TOPOLOGY(flags)) {
cpu_topo_i = st_cpu_topology + i - 1;
cprintf_in(IS_INT, " %4d", "", cpu_topo_i->logical_core_id);
cprintf_in(IS_INT, " %4d", "", cpu_topo_i->phys_package_id);
cprintf_in(IS_INT, " %4d", "", cpu2node[i - 1]);
}
/* Recalculate itv for current proc */
deltot_jiffies = get_per_cpu_interval(scc, scp);
if (!deltot_jiffies) {
/*
* If the CPU is tickless then there is no change in CPU values
* but the sum of values is not zero.
*/
cprintf_pc(NO_UNIT, 10, 7, 2,
0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 100.0);
printf("\n");
continue;
}
}
cprintf_pc(NO_UNIT, 10, 7, 2,
(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, deltot_jiffies),
(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, deltot_jiffies),
ll_sp_value(scp->cpu_sys,
scc->cpu_sys, deltot_jiffies),
ll_sp_value(scp->cpu_iowait,
scc->cpu_iowait, deltot_jiffies),
ll_sp_value(scp->cpu_hardirq,
scc->cpu_hardirq, deltot_jiffies),
ll_sp_value(scp->cpu_softirq,
scc->cpu_softirq, deltot_jiffies),
ll_sp_value(scp->cpu_steal,
scc->cpu_steal, deltot_jiffies),
ll_sp_value(scp->cpu_guest,
scc->cpu_guest, deltot_jiffies),
ll_sp_value(scp->cpu_guest_nice,
scc->cpu_guest_nice, deltot_jiffies),
(scc->cpu_idle < scp->cpu_idle) ?
0.0 :
ll_sp_value(scp->cpu_idle,
scc->cpu_idle, deltot_jiffies));
printf("\n");
}
}
/*
***************************************************************************
* Display CPU statistics in JSON format.
*
* IN:
* @tab Number of tabs to print.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @offline_cpu_bitmap
* CPU bitmap for offline CPU.
***************************************************************************
*/
void write_json_cpu_stats(int tab, unsigned long long deltot_jiffies, int prev, int curr,
unsigned char offline_cpu_bitmap[])
{
int i, next = FALSE;
char cpu_name[16], topology[1024] = "";
struct stats_cpu *scc, *scp;
struct cpu_topology *cpu_topo_i;
xprintf(tab++, "\"cpu-load\": [");
/*
* Now display CPU statistics (including CPU "all"),
* except for offline CPU or CPU that the user doesn't want to see.
*/
for (i = 0; i <= cpu_nr; i++) {
/* Check if we want stats about this proc */
if (!(*(cpu_bitmap + (i >> 3)) & (1 << (i & 0x07))) ||
offline_cpu_bitmap[i >> 3] & (1 << (i & 0x07)))
continue;
scc = st_cpu[curr] + i;
scp = st_cpu[prev] + i;
if (next) {
printf(",\n");
}
next = TRUE;
if (i == 0) {
/* This is CPU "all" */
strcpy(cpu_name, "all");
if (DISPLAY_TOPOLOGY(flags)) {
snprintf(topology, 1024,
", \"core\": \"\", \"socket\": \"\", \"node\": \"\"");
}
}
else {
snprintf(cpu_name, 16, "%d", i - 1);
cpu_name[15] = '\0';
if (DISPLAY_TOPOLOGY(flags)) {
cpu_topo_i = st_cpu_topology + i - 1;
snprintf(topology, 1024,
", \"core\": \"%d\", \"socket\": \"%d\", \"node\": \"%d\"",
cpu_topo_i->logical_core_id, cpu_topo_i->phys_package_id, cpu2node[i - 1]);
}
/* Recalculate itv for current proc */
deltot_jiffies = get_per_cpu_interval(scc, scp);
if (!deltot_jiffies) {
/*
* If the CPU is tickless then there is no change in CPU values
* but the sum of values is not zero.
*/
xprintf0(tab, "{\"cpu\": \"%d\"%s, \"usr\": 0.00, \"nice\": 0.00, "
"\"sys\": 0.00, \"iowait\": 0.00, \"irq\": 0.00, "
"\"soft\": 0.00, \"steal\": 0.00, \"guest\": 0.00, "
"\"gnice\": 0.00, \"idle\": 100.00}", i - 1, topology);
printf("\n");
continue;
}
}
xprintf0(tab, "{\"cpu\": \"%s\"%s, \"usr\": %.2f, \"nice\": %.2f, \"sys\": %.2f, "
"\"iowait\": %.2f, \"irq\": %.2f, \"soft\": %.2f, \"steal\": %.2f, "
"\"guest\": %.2f, \"gnice\": %.2f, \"idle\": %.2f}",
cpu_name, topology,
(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, deltot_jiffies),
(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, deltot_jiffies),
ll_sp_value(scp->cpu_sys,
scc->cpu_sys, deltot_jiffies),
ll_sp_value(scp->cpu_iowait,
scc->cpu_iowait, deltot_jiffies),
ll_sp_value(scp->cpu_hardirq,
scc->cpu_hardirq, deltot_jiffies),
ll_sp_value(scp->cpu_softirq,
scc->cpu_softirq, deltot_jiffies),
ll_sp_value(scp->cpu_steal,
scc->cpu_steal, deltot_jiffies),
ll_sp_value(scp->cpu_guest,
scc->cpu_guest, deltot_jiffies),
ll_sp_value(scp->cpu_guest_nice,
scc->cpu_guest_nice, deltot_jiffies),
(scc->cpu_idle < scp->cpu_idle) ?
0.0 :
ll_sp_value(scp->cpu_idle,
scc->cpu_idle, deltot_jiffies));
}
printf("\n");
xprintf0(--tab, "]");
}
/*
***************************************************************************
* Display CPU statistics in plain or JSON format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
* @tab Number of tabs to print (JSON format only).
* @next TRUE is a previous activity has been displayed (JSON format
* only).
* @offline_cpu_bitmap
* CPU bitmap for offline CPU.
***************************************************************************
*/
void write_cpu_stats(int dis, unsigned long long deltot_jiffies, int prev, int curr,
char *prev_string, char *curr_string, int tab, int *next,
unsigned char offline_cpu_bitmap[])
{
if (!deltot_jiffies) {
/* CPU "all" cannot be tickless */
deltot_jiffies = 1;
}
if (DISPLAY_JSON_OUTPUT(flags)) {
if (*next) {
printf(",\n");
}
*next = TRUE;
write_json_cpu_stats(tab, deltot_jiffies, prev, curr,
offline_cpu_bitmap);
}
else {
write_plain_cpu_stats(dis, deltot_jiffies, prev, curr,
prev_string, curr_string, offline_cpu_bitmap);
}
}
/*
***************************************************************************
* Display CPU statistics for NUMA nodes in plain format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
***************************************************************************
*/
void write_plain_node_stats(int dis, unsigned long long deltot_jiffies,
int prev, int curr, char *prev_string, char *curr_string)
{
struct stats_cpu *snc, *snp, *scc, *scp;
int cpu, node;
if (dis) {
printf("\n%-11s NODE %%usr %%nice %%sys %%iowait %%irq "
"%%soft %%steal %%guest %%gnice %%idle\n",
prev_string);
}
for (node = 0; node <= node_nr + 1; node++) {
snc = st_node[curr] + node;
snp = st_node[prev] + node;
/* Check if we want stats about this node */
if (!(*(node_bitmap + (node >> 3)) & (1 << (node & 0x07))))
continue;
if (!cpu_per_node[node])
/* No CPU in this node */
continue;
printf("%-11s", curr_string);
if (node == 0) {
/* This is node "all", i.e. CPU "all" */
cprintf_in(IS_STR, " %s", " all", 0);
}
else {
cprintf_in(IS_INT, " %4d", "", node - 1);
/* Recalculate interval for current node */
deltot_jiffies = 0;
for (cpu = 1; cpu <= cpu_nr; cpu++) {
scc = st_cpu[curr] + cpu;
scp = st_cpu[prev] + cpu;
if ((scp->cpu_user + scp->cpu_nice + scp->cpu_sys +
scp->cpu_idle + scp->cpu_iowait + scp->cpu_hardirq +
scp->cpu_steal + scp->cpu_softirq == 0) && (interval != 0))
continue;
if (cpu2node[cpu - 1] == node - 1) {
deltot_jiffies += get_per_cpu_interval(scc, scp);
}
}
if (!deltot_jiffies) {
/* All CPU in node are tickless and/or offline */
cprintf_pc(NO_UNIT, 10, 7, 2,
0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 100.0);
printf("\n");
continue;
}
}
cprintf_pc(NO_UNIT, 10, 7, 2,
(snc->cpu_user - snc->cpu_guest) < (snp->cpu_user - snp->cpu_guest) ?
0.0 :
ll_sp_value(snp->cpu_user - snp->cpu_guest,
snc->cpu_user - snc->cpu_guest, deltot_jiffies),
(snc->cpu_nice - snc->cpu_guest_nice) < (snp->cpu_nice - snp->cpu_guest_nice) ?
0.0 :
ll_sp_value(snp->cpu_nice - snp->cpu_guest_nice,
snc->cpu_nice - snc->cpu_guest_nice, deltot_jiffies),
ll_sp_value(snp->cpu_sys,
snc->cpu_sys, deltot_jiffies),
ll_sp_value(snp->cpu_iowait,
snc->cpu_iowait, deltot_jiffies),
ll_sp_value(snp->cpu_hardirq,
snc->cpu_hardirq, deltot_jiffies),
ll_sp_value(snp->cpu_softirq,
snc->cpu_softirq, deltot_jiffies),
ll_sp_value(snp->cpu_steal,
snc->cpu_steal, deltot_jiffies),
ll_sp_value(snp->cpu_guest,
snc->cpu_guest, deltot_jiffies),
ll_sp_value(snp->cpu_guest_nice,
snc->cpu_guest_nice, deltot_jiffies),
(snc->cpu_idle < snp->cpu_idle) ?
0.0 :
ll_sp_value(snp->cpu_idle,
snc->cpu_idle, deltot_jiffies));
printf("\n");
}
}
/*
***************************************************************************
* Display CPU statistics for NUMA nodes in JSON format.
*
* IN:
* @tab Number of tabs to print.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
***************************************************************************
*/
void write_json_node_stats(int tab, unsigned long long deltot_jiffies,
int prev, int curr)
{
struct stats_cpu *snc, *snp, *scc, *scp;
int cpu, node, next = FALSE;
char node_name[16];
xprintf(tab++, "\"node-load\": [");
for (node = 0; node <= node_nr + 1; node++) {
snc = st_node[curr] + node;
snp = st_node[prev] + node;
/* Check if we want stats about this node */
if (!(*(node_bitmap + (node >> 3)) & (1 << (node & 0x07))))
continue;
if (!cpu_per_node[node])
/* No CPU in this node */
continue;
if (next) {
printf(",\n");
}
next = TRUE;
if (node == 0) {
/* This is node "all", i.e. CPU "all" */
strcpy(node_name, "all");
}
else {
snprintf(node_name, 16, "%d", node - 1);
node_name[15] = '\0';
/* Recalculate interval for current node */
deltot_jiffies = 0;
for (cpu = 1; cpu <= cpu_nr; cpu++) {
scc = st_cpu[curr] + cpu;
scp = st_cpu[prev] + cpu;
if ((scp->cpu_user + scp->cpu_nice + scp->cpu_sys +
scp->cpu_idle + scp->cpu_iowait + scp->cpu_hardirq +
scp->cpu_steal + scp->cpu_softirq == 0) && (interval != 0))
continue;
if (cpu2node[cpu - 1] == node - 1) {
deltot_jiffies += get_per_cpu_interval(scc, scp);
}
}
if (!deltot_jiffies) {
/* All CPU in node are tickless and/or offline */
xprintf0(tab, "{\"node\": \"%d\", \"usr\": 0.00, \"nice\": 0.00, \"sys\": 0.00, "
"\"iowait\": 0.00, \"irq\": 0.00, \"soft\": 0.00, \"steal\": 0.00, "
"\"guest\": 0.00, \"gnice\": 0.00, \"idle\": 100.00}", node - 1);
continue;
}
}
xprintf0(tab, "{\"node\": \"%s\", \"usr\": %.2f, \"nice\": %.2f, \"sys\": %.2f, "
"\"iowait\": %.2f, \"irq\": %.2f, \"soft\": %.2f, \"steal\": %.2f, "
"\"guest\": %.2f, \"gnice\": %.2f, \"idle\": %.2f}", node_name,
(snc->cpu_user - snc->cpu_guest) < (snp->cpu_user - snp->cpu_guest) ?
0.0 :
ll_sp_value(snp->cpu_user - snp->cpu_guest,
snc->cpu_user - snc->cpu_guest, deltot_jiffies),
(snc->cpu_nice - snc->cpu_guest_nice) < (snp->cpu_nice - snp->cpu_guest_nice) ?
0.0 :
ll_sp_value(snp->cpu_nice - snp->cpu_guest_nice,
snc->cpu_nice - snc->cpu_guest_nice, deltot_jiffies),
ll_sp_value(snp->cpu_sys,
snc->cpu_sys, deltot_jiffies),
ll_sp_value(snp->cpu_iowait,
snc->cpu_iowait, deltot_jiffies),
ll_sp_value(snp->cpu_hardirq,
snc->cpu_hardirq, deltot_jiffies),
ll_sp_value(snp->cpu_softirq,
snc->cpu_softirq, deltot_jiffies),
ll_sp_value(snp->cpu_steal,
snc->cpu_steal, deltot_jiffies),
ll_sp_value(snp->cpu_guest,
snc->cpu_guest, deltot_jiffies),
ll_sp_value(snp->cpu_guest_nice,
snc->cpu_guest_nice, deltot_jiffies),
(snc->cpu_idle < snp->cpu_idle) ?
0.0 :
ll_sp_value(snp->cpu_idle,
snc->cpu_idle, deltot_jiffies));
}
printf("\n");
xprintf0(--tab, "]");
}
/*
***************************************************************************
* Display nodes statistics in plain or JSON format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @deltot_jiffies
* Number of jiffies spent on the interval by all processors.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
* @tab Number of tabs to print (JSON format only).
* @next TRUE is a previous activity has been displayed (JSON format
* only).
***************************************************************************
*/
void write_node_stats(int dis, unsigned long long deltot_jiffies, int prev, int curr,
char *prev_string, char *curr_string, int tab, int *next)
{
if (!deltot_jiffies) {
/* CPU "all" cannot be tickless */
deltot_jiffies = 1;
}
if (DISPLAY_JSON_OUTPUT(flags)) {
if (*next) {
printf(",\n");
}
*next = TRUE;
write_json_node_stats(tab, deltot_jiffies, prev, curr);
}
else {
write_plain_node_stats(dis, deltot_jiffies, prev, curr,
prev_string, curr_string);
}
}
/*
***************************************************************************
* Display total number of interrupts per CPU in plain format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
***************************************************************************
*/
void write_plain_isumcpu_stats(int dis, unsigned long long itv, int prev, int curr,
char *prev_string, char *curr_string)
{
struct stats_cpu *scc, *scp;
struct stats_irq *sic, *sip;
unsigned long long pc_itv;
int cpu;
if (dis) {
printf("\n%-11s CPU intr/s\n", prev_string);
}
if (*cpu_bitmap & 1) {
printf("%-11s", curr_string);
cprintf_in(IS_STR, " %s", " all", 0);
/* Print total number of interrupts among all cpu */
cprintf_f(NO_UNIT, 1, 9, 2,
S_VALUE(st_irq[prev]->irq_nr, st_irq[curr]->irq_nr, itv));
printf("\n");
}
for (cpu = 1; cpu <= cpu_nr; cpu++) {
sic = st_irq[curr] + cpu;
sip = st_irq[prev] + cpu;
scc = st_cpu[curr] + cpu;
scp = st_cpu[prev] + cpu;
/* Check if we want stats about this CPU */
if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
continue;
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) {
/* This is an offline CPU */
continue;
}
printf("%-11s", curr_string);
cprintf_in(IS_INT, " %4d", "", cpu - 1);
/* Recalculate itv for current proc */
pc_itv = get_per_cpu_interval(scc, scp);
if (!pc_itv) {
/* This is a tickless CPU: Value displayed is 0.00 */
cprintf_f(NO_UNIT, 1, 9, 2, 0.0);
printf("\n");
}
else {
/* Display total number of interrupts for current CPU */
cprintf_f(NO_UNIT, 1, 9, 2,
S_VALUE(sip->irq_nr, sic->irq_nr, itv));
printf("\n");
}
}
}
/*
***************************************************************************
* Display total number of interrupts per CPU in JSON format.
*
* IN:
* @tab Number of tabs to print.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
***************************************************************************
*/
void write_json_isumcpu_stats(int tab, unsigned long long itv, int prev, int curr)
{
struct stats_cpu *scc, *scp;
struct stats_irq *sic, *sip;
unsigned long long pc_itv;
int cpu, next = FALSE;
xprintf(tab++, "\"sum-interrupts\": [");
if (*cpu_bitmap & 1) {
next = TRUE;
/* Print total number of interrupts among all cpu */
xprintf0(tab, "{\"cpu\": \"all\", \"intr\": %.2f}",
S_VALUE(st_irq[prev]->irq_nr, st_irq[curr]->irq_nr, itv));
}
for (cpu = 1; cpu <= cpu_nr; cpu++) {
sic = st_irq[curr] + cpu;
sip = st_irq[prev] + cpu;
scc = st_cpu[curr] + cpu;
scp = st_cpu[prev] + cpu;
/* Check if we want stats about this CPU */
if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))))
continue;
if (next) {
printf(",\n");
}
next = TRUE;
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) {
/* This is an offline CPU */
continue;
}
/* Recalculate itv for current proc */
pc_itv = get_per_cpu_interval(scc, scp);
if (!pc_itv) {
/* This is a tickless CPU: Value displayed is 0.00 */
xprintf0(tab, "{\"cpu\": \"%d\", \"intr\": 0.00}",
cpu - 1);
}
else {
/* Display total number of interrupts for current CPU */
xprintf0(tab, "{\"cpu\": \"%d\", \"intr\": %.2f}",
cpu - 1,
S_VALUE(sip->irq_nr, sic->irq_nr, itv));
}
}
printf("\n");
xprintf0(--tab, "]");
}
/*
***************************************************************************
* Display total number of interrupts per CPU in plain or JSON format.
*
* IN:
* @dis TRUE if a header line must be printed.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
* @tab Number of tabs to print (JSON format only).
* @next TRUE is a previous activity has been displayed (JSON format
* only).
***************************************************************************
*/
void write_isumcpu_stats(int dis, unsigned long long itv, int prev, int curr,
char *prev_string, char *curr_string, int tab, int *next)
{
if (DISPLAY_JSON_OUTPUT(flags)) {
if (*next) {
printf(",\n");
}
*next = TRUE;
write_json_isumcpu_stats(tab, itv, prev, curr);
}
else {
write_plain_isumcpu_stats(dis, itv, prev, curr, prev_string, curr_string);
}
}
/*
***************************************************************************
* Display interrupts statistics for each CPU in plain format.
*
* IN:
* @st_ic Array for per-CPU statistics.
* @ic_nr Number of interrupts (hard or soft) per CPU.
* @dis TRUE if a header line must be printed.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
***************************************************************************
*/
void write_plain_irqcpu_stats(struct stats_irqcpu *st_ic[], int ic_nr, int dis,
unsigned long long itv, int prev, int curr,
char *prev_string, char *curr_string)
{
struct stats_cpu *scc;
int j = ic_nr, offset, cpu, colwidth[NR_IRQS];
struct stats_irqcpu *p, *q, *p0, *q0;
/*
* Check if number of interrupts has changed.
* If this is the case, the header line will be printed again.
* NB: A zero interval value indicates that we are
* displaying statistics since system startup.
*/
if (!dis && interval) {
for (j = 0; j < ic_nr; j++) {
p0 = st_ic[curr] + j;
q0 = st_ic[prev] + j;
if (strcmp(p0->irq_name, q0->irq_name))
/*
* These are two different interrupts: The header must be displayed
* (maybe an interrupt has disappeared, or a new one has just been registered).
* Note that we compare even empty strings for the case where
* a disappearing interrupt would be the last one in the list.
*/
break;
}
}
if (dis || (j < ic_nr)) {
/* Print header */
printf("\n%-11s CPU", prev_string);
for (j = 0; j < ic_nr; j++) {
p0 = st_ic[curr] + j;
if (p0->irq_name[0] == '\0')
/* End of the list of interrupts */
break;
printf(" %8s/s", p0->irq_name);
}
printf("\n");
}
/* Calculate column widths */
for (j = 0; j < ic_nr; j++) {
p0 = st_ic[curr] + j;
/*
* Width is IRQ name + 2 for the trailing "/s".
* Width is calculated even for "undefined" interrupts (with
* an empty irq_name string) to quiet code analysis tools.
*/
colwidth[j] = strlen(p0->irq_name) + 2;
/*
* Normal space for printing a number is 11 chars
* (space + 10 digits including the period).
*/
if (colwidth[j] < 10) {
colwidth[j] = 10;
}
}
for (cpu = 1; cpu <= cpu_nr; cpu++) {
scc = st_cpu[curr] + cpu;
/*
* Check if we want stats about this CPU.
* CPU must have been explicitly selected using option -P,
* else we display every CPU.
*/
if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))) && USE_OPTION_P(flags))
continue;
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)
/* Offline CPU found */
continue;
printf("%-11s", curr_string);
cprintf_in(IS_INT, " %3d", "", cpu - 1);
for (j = 0; j < ic_nr; j++) {
p0 = st_ic[curr] + j; /* irq_name set only for CPU#0 */
/*
* An empty string for irq_name means it is a remaining interrupt
* which is no longer used, for example because the
* number of interrupts has decreased in /proc/interrupts.
*/
if (p0->irq_name[0] == '\0')
/* End of the list of interrupts */
break;
q0 = st_ic[prev] + j;
offset = j;
/*
* If we want stats for the time since system startup,
* we have p0->irq_name != q0->irq_name, since q0 structure
* is completely set to zero.
*/
if (strcmp(p0->irq_name, q0->irq_name) && interval) {
/* Check if interrupt exists elsewhere in list */
for (offset = 0; offset < ic_nr; offset++) {
q0 = st_ic[prev] + offset;
if (!strcmp(p0->irq_name, q0->irq_name))
/* Interrupt found at another position */
break;
}
}
p = st_ic[curr] + (cpu - 1) * ic_nr + j;
if (!strcmp(p0->irq_name, q0->irq_name) || !interval) {
q = st_ic[prev] + (cpu - 1) * ic_nr + offset;
cprintf_f(NO_UNIT, 1, colwidth[j], 2,
S_VALUE(q->interrupt, p->interrupt, itv));
}
else {
/*
* Instead of printing "N/A", assume that previous value
* for this new interrupt was zero.
*/
cprintf_f(NO_UNIT, 1, colwidth[j], 2,
S_VALUE(0, p->interrupt, itv));
}
}
printf("\n");
}
}
/*
***************************************************************************
* Display interrupts statistics for each CPU in JSON format.
*
* IN:
* @tab Number of tabs to print.
* @st_ic Array for per-CPU statistics.
* @ic_nr Number of interrupts (hard or soft) per CPU.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @type Activity (M_D_IRQ_CPU or M_D_SOFTIRQS).
***************************************************************************
*/
void write_json_irqcpu_stats(int tab, struct stats_irqcpu *st_ic[], int ic_nr,
unsigned long long itv, int prev, int curr, int type)
{
struct stats_cpu *scc;
int j = ic_nr, offset, cpu;
struct stats_irqcpu *p, *q, *p0, *q0;
int nextcpu = FALSE, nextirq;
if (type == M_D_IRQ_CPU) {
xprintf(tab++, "\"individual-interrupts\": [");
}
else {
xprintf(tab++, "\"soft-interrupts\": [");
}
for (cpu = 1; cpu <= cpu_nr; cpu++) {
scc = st_cpu[curr] + cpu;
/*
* Check if we want stats about this CPU.
* CPU must have been explicitly selected using option -P,
* else we display every CPU.
*/
if (!(*(cpu_bitmap + (cpu >> 3)) & (1 << (cpu & 0x07))) && USE_OPTION_P(flags))
continue;
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)
/* Offline CPU found */
continue;
if (nextcpu) {
printf(",\n");
}
nextcpu = TRUE;
nextirq = FALSE;
xprintf(tab++, "{\"cpu\": \"%d\", \"intr\": [", cpu - 1);
for (j = 0; j < ic_nr; j++) {
p0 = st_ic[curr] + j; /* irq_name set only for CPU#0 */
/*
* An empty string for irq_name means it is a remaining interrupt
* which is no longer used, for example because the
* number of interrupts has decreased in /proc/interrupts.
*/
if (p0->irq_name[0] == '\0')
/* End of the list of interrupts */
break;
q0 = st_ic[prev] + j;
offset = j;
if (nextirq) {
printf(",\n");
}
nextirq = TRUE;
/*
* If we want stats for the time since system startup,
* we have p0->irq_name != q0->irq_name, since q0 structure
* is completely set to zero.
*/
if (strcmp(p0->irq_name, q0->irq_name) && interval) {
/* Check if interrupt exists elsewhere in list */
for (offset = 0; offset < ic_nr; offset++) {
q0 = st_ic[prev] + offset;
if (!strcmp(p0->irq_name, q0->irq_name))
/* Interrupt found at another position */
break;
}
}
p = st_ic[curr] + (cpu - 1) * ic_nr + j;
if (!strcmp(p0->irq_name, q0->irq_name) || !interval) {
q = st_ic[prev] + (cpu - 1) * ic_nr + offset;
xprintf0(tab, "{\"name\": \"%s\", \"value\": %.2f}",
p0->irq_name,
S_VALUE(q->interrupt, p->interrupt, itv));
}
else {
/*
* Instead of printing "N/A", assume that previous value
* for this new interrupt was zero.
*/
xprintf0(tab, "{\"name\": \"%s\", \"value\": %.2f}",
p0->irq_name,
S_VALUE(0, p->interrupt, itv));
}
}
printf("\n");
xprintf0(--tab, "] }");
}
printf("\n");
xprintf0(--tab, "]");
}
/*
***************************************************************************
* Display interrupts statistics for each CPU in plain or JSON format.
*
* IN:
* @st_ic Array for per-CPU statistics.
* @ic_nr Number of interrupts (hard or soft) per CPU.
* @dis TRUE if a header line must be printed.
* @itv Interval value.
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where current statistics will be saved.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
* @tab Number of tabs to print (JSON format only).
* @next TRUE is a previous activity has been displayed (JSON format
* only).
* @type Activity (M_D_IRQ_CPU or M_D_SOFTIRQS).
***************************************************************************
*/
void write_irqcpu_stats(struct stats_irqcpu *st_ic[], int ic_nr, int dis,
unsigned long long itv, int prev, int curr,
char *prev_string, char *curr_string, int tab,
int *next, int type)
{
if (DISPLAY_JSON_OUTPUT(flags)) {
if (*next) {
printf(",\n");
}
*next = TRUE;
write_json_irqcpu_stats(tab, st_ic, ic_nr, itv, prev, curr, type);
}
else {
write_plain_irqcpu_stats(st_ic, ic_nr, dis, itv, prev, curr,
prev_string, curr_string);
}
}
/*
***************************************************************************
* Core function used to display statistics.
*
* IN:
* @prev Position in array where statistics used as reference are.
* Stats used as reference may be the previous ones read, or
* the very first ones when calculating the average.
* @curr Position in array where statistics for current sample are.
* @dis TRUE if a header line must be printed.
* @prev_string String displayed at the beginning of a header line. This is
* the timestamp of the previous sample, or "Average" when
* displaying average stats.
* @curr_string String displayed at the beginning of current sample stats.
* This is the timestamp of the current sample, or "Average"
* when displaying average stats.
***************************************************************************
*/
void write_stats_core(int prev, int curr, int dis,
char *prev_string, char *curr_string)
{
unsigned long long itv, deltot_jiffies = 1;
int tab = 4, next = FALSE;
unsigned char offline_cpu_bitmap[BITMAP_SIZE(NR_CPUS)] = {0};
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
/*
* Compute CPU "all" as sum of all individual CPU (on SMP machines)
* and look for offline CPU.
*/
deltot_jiffies = get_global_cpu_mpstats(prev, curr, offline_cpu_bitmap);
if (DISPLAY_JSON_OUTPUT(flags)) {
xprintf(tab++, "{");
xprintf(tab, "\"timestamp\": \"%s\",", curr_string);
}
/* Get time interval */
itv = get_interval(uptime_cs[prev], uptime_cs[curr]);
/* Print CPU stats */
if (DISPLAY_CPU(actflags)) {
write_cpu_stats(dis, deltot_jiffies, prev, curr,
prev_string, curr_string, tab, &next, offline_cpu_bitmap);
}
/* Print node CPU stats */
if (DISPLAY_NODE(actflags)) {
set_node_cpu_stats(prev, curr);
write_node_stats(dis, deltot_jiffies, prev, curr, prev_string,
curr_string, tab, &next);
}
/* Print total number of interrupts per processor */
if (DISPLAY_IRQ_SUM(actflags)) {
write_isumcpu_stats(dis, itv, prev, curr, prev_string, curr_string,
tab, &next);
}
/* Display each interrupt value for each CPU */
if (DISPLAY_IRQ_CPU(actflags)) {
write_irqcpu_stats(st_irqcpu, irqcpu_nr, dis, itv, prev, curr,
prev_string, curr_string, tab, &next, M_D_IRQ_CPU);
}
if (DISPLAY_SOFTIRQS(actflags)) {
write_irqcpu_stats(st_softirqcpu, softirqcpu_nr, dis, itv, prev, curr,
prev_string, curr_string, tab, &next, M_D_SOFTIRQS);
}
if (DISPLAY_JSON_OUTPUT(flags)) {
printf("\n");
xprintf0(--tab, "}");
}
}
/*
***************************************************************************
* Print statistics average.
*
* IN:
* @curr Position in array where statistics for current sample are.
* @dis TRUE if a header line must be printed.
***************************************************************************
*/
void write_stats_avg(int curr, int dis)
{
char string[16];
strncpy(string, _("Average:"), 16);
string[15] = '\0';
write_stats_core(2, curr, dis, string, string);
}
/*
***************************************************************************
* Print statistics.
*
* IN:
* @curr Position in array where statistics for current sample are.
* @dis TRUE if a header line must be printed.
***************************************************************************
*/
void write_stats(int curr, int dis)
{
char cur_time[2][TIMESTAMP_LEN];
/* Get previous timestamp */
if (is_iso_time_fmt()) {
strftime(cur_time[!curr], sizeof(cur_time[!curr]), "%H:%M:%S", &mp_tstamp[!curr]);
}
else {
strftime(cur_time[!curr], sizeof(cur_time[!curr]), "%X", &(mp_tstamp[!curr]));
}
/* Get current timestamp */
if (is_iso_time_fmt()) {
strftime(cur_time[curr], sizeof(cur_time[curr]), "%H:%M:%S", &mp_tstamp[curr]);
}
else {
strftime(cur_time[curr], sizeof(cur_time[curr]), "%X", &(mp_tstamp[curr]));
}
write_stats_core(!curr, curr, dis, cur_time[!curr], cur_time[curr]);
}
/*
***************************************************************************
* Read stats from /proc/interrupts or /proc/softirqs.
*
* IN:
* @file /proc file to read (interrupts or softirqs).
* @ic_nr Number of interrupts (hard or soft) per CPU.
* @curr Position in array where current statistics will be saved.
*
* OUT:
* @st_ic Array for per-CPU interrupts statistics.
***************************************************************************
*/
void read_interrupts_stat(char *file, struct stats_irqcpu *st_ic[], int ic_nr, int curr)
{
FILE *fp;
struct stats_irq *st_irq_i;
struct stats_irqcpu *p;
char *line = NULL, *li;
unsigned long irq = 0;
unsigned int cpu;
int cpu_index[cpu_nr], index = 0, len;
char *cp, *next;
/* Reset total number of interrupts received by each CPU */
for (cpu = 0; cpu < cpu_nr; cpu++) {
st_irq_i = st_irq[curr] + cpu + 1;
st_irq_i->irq_nr = 0;
}
if ((fp = fopen(file, "r")) != NULL) {
SREALLOC(line, char, INTERRUPTS_LINE + 11 * cpu_nr);
/*
* Parse header line to see which CPUs are online
*/
while (fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) {
next = line;
while (((cp = strstr(next, "CPU")) != NULL) && (index < cpu_nr)) {
cpu = strtol(cp + 3, &next, 10);
cpu_index[index++] = cpu;
}
if (index)
/* Header line found */
break;
}
/* Parse each line of interrupts statistics data */
while ((fgets(line, INTERRUPTS_LINE + 11 * cpu_nr, fp) != NULL) &&
(irq < ic_nr)) {
/* Skip over "<irq>:" */
if ((cp = strchr(line, ':')) == NULL)
/* Chr ':' not found */
continue;
cp++;
p = st_ic[curr] + irq;
/* Remove possible heading spaces in interrupt's name... */
li = line;
while (*li == ' ')
li++;
len = strcspn(li, ":");
if (len >= MAX_IRQ_LEN) {
len = MAX_IRQ_LEN - 1;
}
/* ...then save its name */
strncpy(p->irq_name, li, len);
p->irq_name[len] = '\0';
/* For each interrupt: Get number received by each CPU */
for (cpu = 0; cpu < index; cpu++) {
p = st_ic[curr] + cpu_index[cpu] * ic_nr + irq;
st_irq_i = st_irq[curr] + cpu_index[cpu] + 1;
/*
* No need to set (st_irqcpu + cpu * irqcpu_nr)->irq_name:
* This is the same as st_irqcpu->irq_name.
* Now save current interrupt value for current CPU (in stats_irqcpu structure)
* and total number of interrupts received by current CPU (in stats_irq structure).
*/
p->interrupt = strtoul(cp, &next, 10);
st_irq_i->irq_nr += p->interrupt;
cp = next;
}
irq++;
}
fclose(fp);
free(line);
}
while (irq < ic_nr) {
/* Nb of interrupts per processor has changed */
p = st_ic[curr] + irq;
p->irq_name[0] = '\0'; /* This value means this is a dummy interrupt */
irq++;
}
}
/*
***************************************************************************
* Main loop: Read stats from the relevant sources, and display them.
*
* IN:
* @dis_hdr Set to TRUE if the header line must always be printed.
* @rows Number of rows of screen.
***************************************************************************
*/
void rw_mpstat_loop(int dis_hdr, int rows)
{
struct stats_cpu *scc;
int i;
int curr = 1, dis = 1;
unsigned long lines = rows;
/* Dont buffer data if redirected to a pipe */
setbuf(stdout, NULL);
/* Read system uptime and CPU stats */
read_uptime(&(uptime_cs[0]));
read_stat_cpu(st_cpu[0], cpu_nr + 1);
/*
* Calculate global CPU stats as the sum of individual ones.
* Done only on SMP machines. On UP machines, we keep the values
* read from /proc/stat for global CPU stats.
*/
if (cpu_nr > 1) {
memset(st_cpu[0], 0, STATS_CPU_SIZE);
for (i = 1; i <= cpu_nr; i++) {
scc = st_cpu[0] + i;
st_cpu[0]->cpu_user += scc->cpu_user;
st_cpu[0]->cpu_nice += scc->cpu_nice;
st_cpu[0]->cpu_sys += scc->cpu_sys;
st_cpu[0]->cpu_idle += scc->cpu_idle;
st_cpu[0]->cpu_iowait += scc->cpu_iowait;
st_cpu[0]->cpu_hardirq += scc->cpu_hardirq;
st_cpu[0]->cpu_steal += scc->cpu_steal;
st_cpu[0]->cpu_softirq += scc->cpu_softirq;
st_cpu[0]->cpu_guest += scc->cpu_guest;
st_cpu[0]->cpu_guest_nice += scc->cpu_guest_nice;
}
}
/* Read system topology */
if (DISPLAY_CPU(actflags) && DISPLAY_TOPOLOGY(flags)) {
read_topology(cpu_nr, st_cpu_topology);
}
/*
* Read total number of interrupts received among all CPU.
* (this is the first value on the line "intr:" in the /proc/stat file).
*/
if (DISPLAY_IRQ_SUM(actflags)) {
read_stat_irq(st_irq[0], 1);
}
/*
* Read number of interrupts received by each CPU, for each interrupt,
* and compute the total number of interrupts received by each CPU.
*/
if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
/* Read this file to display int per CPU or total nr of int per CPU */
read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, 0);
}
if (DISPLAY_SOFTIRQS(actflags)) {
read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, 0);
}
if (!interval) {
/* Display since boot time */
mp_tstamp[1] = mp_tstamp[0];
memset(st_cpu[1], 0, STATS_CPU_SIZE * (cpu_nr + 1));
memset(st_node[1], 0, STATS_CPU_SIZE * (cpu_nr + 1));
memset(st_irq[1], 0, STATS_IRQ_SIZE * (cpu_nr + 1));
memset(st_irqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
if (DISPLAY_SOFTIRQS(actflags)) {
memset(st_softirqcpu[1], 0, STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
}
write_stats(0, DISP_HDR);
if (DISPLAY_JSON_OUTPUT(flags)) {
printf("\n\t\t\t]\n\t\t}\n\t]\n}}\n");
}
exit(0);
}
/* Set a handler for SIGALRM */
memset(&alrm_act, 0, sizeof(alrm_act));
alrm_act.sa_handler = alarm_handler;
sigaction(SIGALRM, &alrm_act, NULL);
alarm(interval);
/* Save the first stats collected. Will be used to compute the average */
mp_tstamp[2] = mp_tstamp[0];
uptime_cs[2] = uptime_cs[0];
memcpy(st_cpu[2], st_cpu[0], STATS_CPU_SIZE * (cpu_nr + 1));
memcpy(st_node[2], st_node[0], STATS_CPU_SIZE * (cpu_nr + 1));
memcpy(st_irq[2], st_irq[0], STATS_IRQ_SIZE * (cpu_nr + 1));
memcpy(st_irqcpu[2], st_irqcpu[0], STATS_IRQCPU_SIZE * (cpu_nr + 1) * irqcpu_nr);
if (DISPLAY_SOFTIRQS(actflags)) {
memcpy(st_softirqcpu[2], st_softirqcpu[0],
STATS_IRQCPU_SIZE * (cpu_nr + 1) * softirqcpu_nr);
}
/* Set a handler for SIGINT */
memset(&int_act, 0, sizeof(int_act));
int_act.sa_handler = int_handler;
sigaction(SIGINT, &int_act, NULL);
__pause();
if (sigint_caught)
/* SIGINT signal caught during first interval: Exit immediately */
return;
do {
/*
* Resetting the structure not needed since every fields will be set.
* Exceptions are per-CPU structures: Some of them may not be filled
* if corresponding processor is disabled (offline). We set them to zero
* to be able to distinguish between offline and tickless CPUs.
*/
memset(st_cpu[curr], 0, STATS_CPU_SIZE * (cpu_nr + 1));
/* Get time */
get_localtime(&(mp_tstamp[curr]), 0);
/* Read uptime and CPU stats */
read_uptime(&(uptime_cs[curr]));
read_stat_cpu(st_cpu[curr], cpu_nr + 1);
/* Read system topology */
if (DISPLAY_CPU(actflags) && DISPLAY_TOPOLOGY(flags)) {
read_topology(cpu_nr, st_cpu_topology);
}
/* Read total number of interrupts received among all CPU */
if (DISPLAY_IRQ_SUM(actflags)) {
read_stat_irq(st_irq[curr], 1);
}
/*
* Read number of interrupts received by each CPU, for each interrupt,
* and compute the total number of interrupts received by each CPU.
*/
if (DISPLAY_IRQ_SUM(actflags) || DISPLAY_IRQ_CPU(actflags)) {
read_interrupts_stat(INTERRUPTS, st_irqcpu, irqcpu_nr, curr);
}
if (DISPLAY_SOFTIRQS(actflags)) {
read_interrupts_stat(SOFTIRQS, st_softirqcpu, softirqcpu_nr, curr);
}
/* Write stats */
if (!dis_hdr) {
dis = lines / rows;
if (dis) {
lines %= rows;
}
lines++;
}
write_stats(curr, dis);
if (count > 0) {
count--;
}
if (count) {
__pause();
if (sigint_caught) {
/* SIGINT signal caught => Display average stats */
count = 0;
}
else {
if (DISPLAY_JSON_OUTPUT(flags)) {
printf(",\n");
}
curr ^= 1;
}
}
}
while (count);
/* Write stats average */
if (DISPLAY_JSON_OUTPUT(flags)) {
printf("\n\t\t\t]\n\t\t}\n\t]\n}}\n");
}
else {
write_stats_avg(curr, dis_hdr);
}
}
/*
***************************************************************************
* Main entry to the program
***************************************************************************
*/
int main(int argc, char **argv)
{
int opt = 0, i, actset = FALSE;
struct utsname header;
int dis_hdr = -1;
int rows = 23;
char *t;
#ifdef USE_NLS
/* Init National Language Support */
init_nls();
#endif
/* Init color strings */
init_colors();
/* Get HZ */
get_HZ();
/* What is the highest processor number on this machine? */
cpu_nr = get_cpu_nr(~0, TRUE);
/* Calculate number of interrupts per processor */
irqcpu_nr = get_irqcpu_nr(INTERRUPTS, NR_IRQS, cpu_nr) +
NR_IRQCPU_PREALLOC;
/* Calculate number of soft interrupts per processor */
softirqcpu_nr = get_irqcpu_nr(SOFTIRQS, NR_IRQS, cpu_nr) +
NR_IRQCPU_PREALLOC;
/*
* cpu_nr: a value of 2 means there are 2 processors (0 and 1).
* In this case, we have to allocate 3 structures: global, proc0 and proc1.
*/
salloc_mp_struct(cpu_nr + 1);
/* Get NUMA node placement */
node_nr = get_node_placement(cpu_nr, cpu_per_node, cpu2node);
while (++opt < argc) {
if (!strncmp(argv[opt], "--dec=", 6) && (strlen(argv[opt]) == 7)) {
/* Get number of decimal places */
dplaces_nr = atoi(argv[opt] + 6);
if ((dplaces_nr < 0) || (dplaces_nr > 2)) {
usage(argv[0]);
}
}
else if (!strcmp(argv[opt], "-I")) {
if (!argv[++opt]) {
usage(argv[0]);
}
actset = TRUE;
for (t = strtok(argv[opt], ","); t; t = strtok(NULL, ",")) {
if (!strcmp(t, K_SUM)) {
/* Display total number of interrupts per CPU */
actflags |= M_D_IRQ_SUM;
}
else if (!strcmp(t, K_CPU)) {
/* Display interrupts per CPU */
actflags |= M_D_IRQ_CPU;
}
else if (!strcmp(t, K_SCPU)) {
/* Display soft interrupts per CPU */
actflags |= M_D_SOFTIRQS;
}
else if (!strcmp(t, K_ALL)) {
actflags |= M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
}
else {
usage(argv[0]);
}
}
}
else if (!strcmp(argv[opt], "-o")) {
/* Select output format */
if (argv[++opt] && !strcmp(argv[opt], K_JSON)) {
flags |= F_JSON_OUTPUT;
}
else {
usage(argv[0]);
}
}
else if (!strcmp(argv[opt], "-N")) {
if (!argv[++opt]) {
usage(argv[0]);
}
if (node_nr >= 0) {
flags |= F_OPTION_N;
actflags |= M_D_NODE;
actset = TRUE;
dis_hdr = 9;
if (parse_values(argv[opt], node_bitmap, node_nr + 1, K_LOWERALL)) {
usage(argv[0]);
}
}
}
else if (!strcmp(argv[opt], "-P")) {
/* '-P ALL' can be used on UP machines */
if (!argv[++opt]) {
usage(argv[0]);
}
flags |= F_OPTION_P;
dis_hdr = 9;
if (parse_values(argv[opt], cpu_bitmap, cpu_nr, K_LOWERALL)) {
usage(argv[0]);
}
}
else if (!strncmp(argv[opt], "-", 1)) {
for (i = 1; *(argv[opt] + i); i++) {
switch (*(argv[opt] + i)) {
case 'A':
flags |= F_OPTION_A;
actflags |= M_D_CPU + M_D_IRQ_SUM + M_D_IRQ_CPU + M_D_SOFTIRQS;
if (node_nr >= 0) {
actflags |= M_D_NODE;
}
actset = TRUE;
break;
case 'n':
/* Display CPU stats based on NUMA node placement */
if (node_nr >= 0) {
actflags |= M_D_NODE;
actset = TRUE;
}
break;
case 'T':
/* Display logical topology */
flags |= F_TOPOLOGY;
break;
case 'u':
/* Display CPU */
actflags |= M_D_CPU;
break;
case 'V':
/* Print version number */
print_version();
break;
default:
usage(argv[0]);
}
}
}
else if (interval < 0) {
/* Get interval */
if (strspn(argv[opt], DIGITS) != strlen(argv[opt])) {
usage(argv[0]);
}
interval = atol(argv[opt]);
if (interval < 0) {
usage(argv[0]);
}
count = -1;
}
else if (count <= 0) {
/* Get count value */
if ((strspn(argv[opt], DIGITS) != strlen(argv[opt])) ||
!interval) {
usage(argv[0]);
}
count = atol(argv[opt]);
if (count < 1) {
usage(argv[0]);
}
}
else {
usage(argv[0]);
}
}
/* Default: Display CPU (e.g., "mpstat", "mpstat -P 1", "mpstat -P 1 -n", "mpstat -P 1 -N 1"... */
if (!actset ||
(USE_OPTION_P(flags) && !(actflags & ~M_D_NODE))) {
actflags |= M_D_CPU;
}
if (count_bits(&actflags, sizeof(unsigned int)) > 1) {
dis_hdr = 9;
}
if (USE_OPTION_A(flags)) {
/*
* Set -P ALL -N ALL only if individual CPU and/or nodes
* have not been selected.
*/
if ((node_nr >= 0) && !USE_OPTION_N(flags)) {
memset(node_bitmap, ~0, ((cpu_nr + 1) >> 3) + 1);
flags += F_OPTION_N;
}
if (!USE_OPTION_P(flags)) {
memset(cpu_bitmap, ~0, ((cpu_nr + 1) >> 3) + 1);
flags += F_OPTION_P;
}
}
if (!USE_OPTION_P(flags)) {
/* Option -P not used: Set bit 0 (global stats among all proc) */
*cpu_bitmap = 1;
}
if (!USE_OPTION_N(flags)) {
/* Option -N not used: Set bit 0 (global stats among all nodes) */
*node_bitmap = 1;
}
if (dis_hdr < 0) {
dis_hdr = 0;
}
if (!dis_hdr) {
/* Get window size */
rows = get_win_height();
}
if (interval < 0) {
/* Interval not set => display stats since boot time */
interval = 0;
}
if (DISPLAY_JSON_OUTPUT(flags)) {
/* Use a decimal point to make JSON code compliant with RFC7159 */
setlocale(LC_NUMERIC, "C");
}
/* Get time */
get_localtime(&(mp_tstamp[0]), 0);
/* Get system name, release number and hostname */
__uname(&header);
print_gal_header(&(mp_tstamp[0]), header.sysname, header.release,
header.nodename, header.machine, get_cpu_nr(~0, FALSE),
DISPLAY_JSON_OUTPUT(flags));
/* Main loop */
rw_mpstat_loop(dis_hdr, rows);
/* Free structures */
sfree_mp_struct();
return 0;
}
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