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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "log.h"
#include "appconfig.h"
#include "procfile.h"
#include "rrd.h"
#include "plugin_proc.h"
#define RRD_TYPE_STAT "cpu"
#define RRD_TYPE_STAT_LEN strlen(RRD_TYPE_STAT)
int do_proc_stat(int update_every, unsigned long long dt) {
static procfile *ff = NULL;
static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1;
if(do_cpu == -1) do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1);
if(do_cpu_cores == -1) do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1);
if(do_interrupts == -1) do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1);
if(do_context == -1) do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1);
if(do_forks == -1) do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1);
if(do_processes == -1) do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1);
if(dt) {};
if(!ff) {
char filename[FILENAME_MAX + 1];
snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/stat");
ff = procfile_open(config_get("plugin:proc:/proc/stat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
}
if(!ff) return 1;
ff = procfile_readall(ff);
if(!ff) return 0; // we return 0, so that we will retry to open it next time
uint32_t lines = procfile_lines(ff), l;
uint32_t words;
unsigned long long processes = 0, running = 0 , blocked = 0;
RRDSET *st;
for(l = 0; l < lines ;l++) {
if(strncmp(procfile_lineword(ff, l, 0), "cpu", 3) == 0) {
words = procfile_linewords(ff, l);
if(words < 9) {
error("Cannot read /proc/stat cpu line. Expected 9 params, read %d.", words);
continue;
}
char *id;
unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0;
id = procfile_lineword(ff, l, 0);
user = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
nice = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
system = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
idle = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
iowait = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
irq = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
softirq = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
steal = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
if(words >= 10) guest = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
if(words >= 11) guest_nice = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
char *title = "Core utilization";
char *type = RRD_TYPE_STAT;
char *context = "cpu.cpu";
char *family = "utilization";
long priority = 1000;
int isthistotal = 0;
if(strcmp(id, "cpu") == 0) {
isthistotal = 1;
type = "system";
title = "Total CPU utilization";
context = "system.cpu";
family = id;
priority = 100;
}
if((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores)) {
st = rrdset_find_bytype(type, id);
if(!st) {
st = rrdset_create(type, id, NULL, family, context, title, "percentage", priority, update_every, RRDSET_TYPE_STACKED);
long multiplier = 1;
long divisor = 1; // sysconf(_SC_CLK_TCK);
rrddim_add(st, "guest_nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "guest", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "steal", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "softirq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "irq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "user", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "system", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "iowait", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_add(st, "idle", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
rrddim_hide(st, "idle");
}
else rrdset_next(st);
rrddim_set(st, "user", user);
rrddim_set(st, "nice", nice);
rrddim_set(st, "system", system);
rrddim_set(st, "idle", idle);
rrddim_set(st, "iowait", iowait);
rrddim_set(st, "irq", irq);
rrddim_set(st, "softirq", softirq);
rrddim_set(st, "steal", steal);
rrddim_set(st, "guest", guest);
rrddim_set(st, "guest_nice", guest_nice);
rrdset_done(st);
}
}
else if(strcmp(procfile_lineword(ff, l, 0), "intr") == 0) {
unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
// --------------------------------------------------------------------
if(do_interrupts) {
st = rrdset_find_bytype("system", "intr");
if(!st) {
st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "interrupts", value);
rrdset_done(st);
}
}
else if(strcmp(procfile_lineword(ff, l, 0), "ctxt") == 0) {
unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
// --------------------------------------------------------------------
if(do_context) {
st = rrdset_find_bytype("system", "ctxt");
if(!st) {
st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "switches", value);
rrdset_done(st);
}
}
else if(!processes && strcmp(procfile_lineword(ff, l, 0), "processes") == 0) {
processes = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
else if(!running && strcmp(procfile_lineword(ff, l, 0), "procs_running") == 0) {
running = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
else if(!blocked && strcmp(procfile_lineword(ff, l, 0), "procs_blocked") == 0) {
blocked = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
}
// --------------------------------------------------------------------
if(do_forks) {
st = rrdset_find_bytype("system", "forks");
if(!st) {
st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "started", processes);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_processes) {
st = rrdset_find_bytype("system", "processes");
if(!st) {
st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE);
rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE);
}
else rrdset_next(st);
rrddim_set(st, "running", running);
rrddim_set(st, "blocked", blocked);
rrdset_done(st);
}
return 0;
}
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