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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_loadavg.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_loadavg.c')
-rw-r--r--src/proc_loadavg.c125
1 files changed, 58 insertions, 67 deletions
diff --git a/src/proc_loadavg.c b/src/proc_loadavg.c
index c8e893b99..44ea70191 100644
--- a/src/proc_loadavg.c
+++ b/src/proc_loadavg.c
@@ -1,89 +1,80 @@
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "log.h"
#include "common.h"
-#include "appconfig.h"
-#include "procfile.h"
-#include "rrd.h"
-#include "plugin_proc.h"
+
+// linux calculates this once every 5 seconds
+#define MIN_LOADAVG_UPDATE_EVERY 5
int do_proc_loadavg(int update_every, unsigned long long dt) {
- static procfile *ff = NULL;
- static int do_loadavg = -1, do_all_processes = -1;
+ static procfile *ff = NULL;
+ static int do_loadavg = -1, do_all_processes = -1;
- if(dt) {};
+ if(dt) {};
- if(!ff) {
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/loadavg");
- ff = procfile_open(config_get("plugin:proc:/proc/loadavg", "filename to monitor", filename), " \t,:|/", PROCFILE_FLAG_DEFAULT);
- }
- if(!ff) return 1;
+ if(!ff) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/loadavg");
+ ff = procfile_open(config_get("plugin:proc:/proc/loadavg", "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
+ ff = procfile_readall(ff);
+ if(!ff) return 0; // we return 0, so that we will retry to open it next time
- if(do_loadavg == -1) do_loadavg = config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1);
- if(do_all_processes == -1) do_all_processes = config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1);
+ if(do_loadavg == -1) do_loadavg = config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1);
+ if(do_all_processes == -1) do_all_processes = config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1);
- if(procfile_lines(ff) < 1) {
- error("/proc/loadavg has no lines.");
- return 1;
- }
- if(procfile_linewords(ff, 0) < 6) {
- error("/proc/loadavg has less than 6 words in it.");
- return 1;
- }
+ if(procfile_lines(ff) < 1) {
+ error("/proc/loadavg has no lines.");
+ return 1;
+ }
+ if(procfile_linewords(ff, 0) < 6) {
+ error("/proc/loadavg has less than 6 words in it.");
+ return 1;
+ }
- double load1 = strtod(procfile_lineword(ff, 0, 0), NULL);
- double load5 = strtod(procfile_lineword(ff, 0, 1), NULL);
- double load15 = strtod(procfile_lineword(ff, 0, 2), NULL);
+ double load1 = strtod(procfile_lineword(ff, 0, 0), NULL);
+ double load5 = strtod(procfile_lineword(ff, 0, 1), NULL);
+ double load15 = strtod(procfile_lineword(ff, 0, 2), NULL);
- //unsigned long long running_processes = strtoull(procfile_lineword(ff, 0, 3), NULL, 10);
- unsigned long long active_processes = strtoull(procfile_lineword(ff, 0, 4), NULL, 10);
- //unsigned long long next_pid = strtoull(procfile_lineword(ff, 0, 5), NULL, 10);
+ //unsigned long long running_processes = strtoull(procfile_lineword(ff, 0, 3), NULL, 10);
+ unsigned long long active_processes = strtoull(procfile_lineword(ff, 0, 4), NULL, 10);
+ //unsigned long long next_pid = strtoull(procfile_lineword(ff, 0, 5), NULL, 10);
- RRDSET *st;
+ RRDSET *st;
- // --------------------------------------------------------------------
+ // --------------------------------------------------------------------
- if(do_loadavg) {
- st = rrdset_find_byname("system.load");
- if(!st) {
- st = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, update_every, RRDSET_TYPE_LINE);
+ if(do_loadavg) {
+ st = rrdset_find_byname("system.load");
+ if(!st) {
+ st = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, (update_every < MIN_LOADAVG_UPDATE_EVERY)?MIN_LOADAVG_UPDATE_EVERY:update_every, RRDSET_TYPE_LINE);
- rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE);
- rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE);
- rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
+ rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+ }
+ else rrdset_next(st);
- rrddim_set(st, "load1", load1 * 1000);
- rrddim_set(st, "load5", load5 * 1000);
- rrddim_set(st, "load15", load15 * 1000);
- rrdset_done(st);
- }
+ rrddim_set(st, "load1", load1 * 1000);
+ rrddim_set(st, "load5", load5 * 1000);
+ rrddim_set(st, "load15", load15 * 1000);
+ rrdset_done(st);
+ }
- // --------------------------------------------------------------------
+ // --------------------------------------------------------------------
- if(do_all_processes) {
- st = rrdset_find_byname("system.active_processes");
- if(!st) {
- st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE);
+ if(do_all_processes) {
+ st = rrdset_find_byname("system.active_processes");
+ if(!st) {
+ st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE);
- rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
+ rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE);
+ }
+ else rrdset_next(st);
- rrddim_set(st, "active", active_processes);
- rrdset_done(st);
- }
+ rrddim_set(st, "active", active_processes);
+ rrdset_done(st);
+ }
- return 0;
+ return 0;
}