summaryrefslogtreecommitdiffstats
path: root/src/proc_stat.c
diff options
context:
space:
mode:
authorLennart Weller <lhw@ring0.de>2016-09-05 08:27:21 +0000
committerLennart Weller <lhw@ring0.de>2016-09-05 08:27:21 +0000
commit1746898cefcb17f58b5cf27b4dad3d28236f1152 (patch)
tree9207f191cf39bbd077a1e1c73d6e82123e2fc710 /src/proc_stat.c
parentImported Upstream version 1.2.0+dfsg (diff)
downloadnetdata-1746898cefcb17f58b5cf27b4dad3d28236f1152.tar.xz
netdata-1746898cefcb17f58b5cf27b4dad3d28236f1152.zip
Imported Upstream version 1.3.0+dfsgupstream/1.3.0+dfsg
Diffstat (limited to 'src/proc_stat.c')
-rw-r--r--src/proc_stat.c407
1 files changed, 207 insertions, 200 deletions
diff --git a/src/proc_stat.c b/src/proc_stat.c
index 154ba167d..88cb820b3 100644
--- a/src/proc_stat.c
+++ b/src/proc_stat.c
@@ -1,204 +1,211 @@
-#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];
- 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(!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;
+ (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;
}