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#include "common.h"
int do_proc_stat(int update_every, unsigned long long dt) {
(void)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;
static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
if(unlikely(do_cpu == -1)) {
do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1);
do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1);
do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1);
do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1);
do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1);
do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1);
hash_intr = simple_hash("intr");
hash_ctxt = simple_hash("ctxt");
hash_processes = simple_hash("processes");
hash_procs_running = simple_hash("procs_running");
hash_procs_blocked = simple_hash("procs_blocked");
}
if(unlikely(!ff)) {
char filename[FILENAME_MAX + 1];
snprintfz(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(unlikely(!ff)) return 1;
}
ff = procfile_readall(ff);
if(unlikely(!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++) {
char *row_key = procfile_lineword(ff, l, 0);
uint32_t hash = simple_hash(row_key);
// faster strncmp(row_key, "cpu", 3) == 0
if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
words = procfile_linewords(ff, l);
if(unlikely(words < 9)) {
error("Cannot read /proc/stat cpu line. Expected 9 params, read %u.", 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 = row_key;
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);
guest = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
user -= guest;
guest_nice = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
nice -= guest_nice;
char *title, *type, *context, *family;
long priority;
int isthistotal;
if(unlikely(strcmp(id, "cpu")) == 0) {
title = "Total CPU utilization";
type = "system";
context = "system.cpu";
family = id;
priority = 100;
isthistotal = 1;
}
else {
title = "Core utilization";
type = "cpu";
context = "cpu.cpu";
family = "utilization";
priority = 1000;
isthistotal = 0;
}
if(likely((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores))) {
st = rrdset_find_bytype(type, id);
if(unlikely(!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(hash == hash_intr && strcmp(row_key, "intr") == 0) {
unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
// --------------------------------------------------------------------
if(likely(do_interrupts)) {
st = rrdset_find_bytype("system", "intr");
if(unlikely(!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(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0) {
unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
// --------------------------------------------------------------------
if(likely(do_context)) {
st = rrdset_find_bytype("system", "ctxt");
if(unlikely(!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(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0) {
processes = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
else if(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0) {
running = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
else if(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0) {
blocked = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
}
}
// --------------------------------------------------------------------
if(likely(do_forks)) {
st = rrdset_find_bytype("system", "forks");
if(unlikely(!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(likely(do_processes)) {
st = rrdset_find_bytype("system", "processes");
if(unlikely(!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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