From be1c7e50e1e8809ea56f2c9d472eccd8ffd73a97 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 04:57:58 +0200 Subject: Adding upstream version 1.44.3. Signed-off-by: Daniel Baumann --- collectors/idlejitter.plugin/plugin_idlejitter.c | 93 ++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 collectors/idlejitter.plugin/plugin_idlejitter.c (limited to 'collectors/idlejitter.plugin/plugin_idlejitter.c') diff --git a/collectors/idlejitter.plugin/plugin_idlejitter.c b/collectors/idlejitter.plugin/plugin_idlejitter.c new file mode 100644 index 00000000..d9054886 --- /dev/null +++ b/collectors/idlejitter.plugin/plugin_idlejitter.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "daemon/common.h" + +#define CPU_IDLEJITTER_SLEEP_TIME_MS 20 + +static void cpuidlejitter_main_cleanup(void *ptr) { + worker_unregister(); + + struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr; + static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; + + collector_info("cleaning up..."); + + static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; +} + +void *cpuidlejitter_main(void *ptr) { + worker_register("IDLEJITTER"); + worker_register_job_name(0, "measurements"); + + netdata_thread_cleanup_push(cpuidlejitter_main_cleanup, ptr); + + usec_t sleep_ut = config_get_number("plugin:idlejitter", "loop time in ms", CPU_IDLEJITTER_SLEEP_TIME_MS) * USEC_PER_MS; + if(sleep_ut <= 0) { + config_set_number("plugin:idlejitter", "loop time in ms", CPU_IDLEJITTER_SLEEP_TIME_MS); + sleep_ut = CPU_IDLEJITTER_SLEEP_TIME_MS * USEC_PER_MS; + } + + RRDSET *st = rrdset_create_localhost( + "system" + , "idlejitter" + , NULL + , "idlejitter" + , NULL + , "CPU Idle Jitter" + , "microseconds lost/s" + , "idlejitter.plugin" + , NULL + , NETDATA_CHART_PRIO_SYSTEM_IDLEJITTER + , localhost->rrd_update_every + , RRDSET_TYPE_AREA + ); + RRDDIM *rd_min = rrddim_add(st, "min", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_max = rrddim_add(st, "max", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_avg = rrddim_add(st, "average", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + + usec_t update_every_ut = localhost->rrd_update_every * USEC_PER_SEC; + struct timeval before, after; + + while (service_running(SERVICE_COLLECTORS)) { + int iterations = 0; + usec_t error_total = 0, + error_min = 0, + error_max = 0, + elapsed = 0; + + while (elapsed < update_every_ut) { + now_monotonic_high_precision_timeval(&before); + worker_is_idle(); + sleep_usec(sleep_ut); + worker_is_busy(0); + now_monotonic_high_precision_timeval(&after); + + usec_t dt = dt_usec(&after, &before); + elapsed += dt; + + usec_t error = dt - sleep_ut; + error_total += error; + + if(unlikely(!iterations)) + error_min = error; + else if(error < error_min) + error_min = error; + + if(error > error_max) + error_max = error; + + iterations++; + } + + if(iterations) { + rrddim_set_by_pointer(st, rd_min, error_min); + rrddim_set_by_pointer(st, rd_max, error_max); + rrddim_set_by_pointer(st, rd_avg, error_total / iterations); + rrdset_done(st); + } + } + + netdata_thread_cleanup_pop(1); + return NULL; +} + -- cgit v1.2.3