6 #include <sys/resource.h>
10 #include "global_statistics.h"
12 #include "appconfig.h"
15 #include "plugin_idlejitter.h"
17 #define CPU_IDLEJITTER_SLEEP_TIME_MS 20
19 void *cpuidlejitter_main(void *ptr)
23 info("CPU Idle Jitter thread created with task id %d", gettid());
25 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
26 error("Cannot set pthread cancel type to DEFERRED.");
28 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
29 error("Cannot set pthread cancel state to ENABLE.");
31 int sleep_ms = (int) config_get_number("plugin:idlejitter", "loop time in ms", CPU_IDLEJITTER_SLEEP_TIME_MS);
33 config_set_number("plugin:idlejitter", "loop time in ms", CPU_IDLEJITTER_SLEEP_TIME_MS);
34 sleep_ms = CPU_IDLEJITTER_SLEEP_TIME_MS;
37 RRDSET *st = rrdset_find("system.idlejitter");
39 st = rrdset_create("system", "idlejitter", NULL, "processes", NULL, "CPU Idle Jitter", "microseconds lost/s", 9999, rrd_update_every, RRDSET_TYPE_LINE);
40 rrddim_add(st, "jitter", NULL, 1, 1, RRDDIM_ABSOLUTE);
43 struct timeval before, after;
44 unsigned long long counter;
45 for(counter = 0; 1 ;counter++) {
46 unsigned long long usec = 0, susec = 0;
48 while(susec < (rrd_update_every * 1000000ULL)) {
50 gettimeofday(&before, NULL);
51 usleep(sleep_ms * 1000);
52 gettimeofday(&after, NULL);
54 // calculate the time it took for a full loop
55 usec = usecdiff(&after, &before);
58 usec -= (sleep_ms * 1000);
60 if(counter) rrdset_next(st);
61 rrddim_set(st, "jitter", usec);