OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of system in rack #0, slot #2

Click here to display the system's profile data or here to proceed to next system.

Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot2.osadl.org (updated Tue May 19, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
761373	2	82	0,1	sleep7	761375	-21	kthreadcore	22:43:07	7
288905	2	59	49,7	sleep4	0	-21	swapper/4	19:07:42	4
289233	99	48	46,2	cyclictest	485563	-21	kworker/u16:0+flush-8:0	21:13:15	6
289233	99	48	46,2	cyclictest	485563	-21	kworker/u16:0+flush-8:0	21:13:15	6
289226	99	45	43,2	cyclictest	485563	-21	kworker/u16:0+flush-8:0	21:08:09	4
288601	2	42	31,7	sleep5	0	-21	swapper/5	19:03:26	5
6280	89	41	0,34	rtkit-daemon	0	-21	swapper/6	19:03:29	6
289233	99	40	38,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	23:41:33	6
289226	99	40	38,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:43:09	4
289226	99	40	37,2	cyclictest	678680	-21	kworker/u16:0+events_unbound	22:47:46	4
289233	99	39	37,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	23:57:13	6
289233	99	39	37,2	cyclictest	765765	-21	kworker/u16:3+events_unbound	22:54:38	6
289233	99	38	36,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	00:09:29	6
289233	99	38	36,2	cyclictest	765765	-21	kworker/u16:3+events_unbound	23:04:13	6
289233	99	38	36,2	cyclictest	572070	-21	kworker/u16:4+flush-8:0	21:32:05	6
289226	99	38	36,2	cyclictest	514097	-21	kworker/u16:3+flush-8:0	21:15:42	4
289226	99	38	36,2	cyclictest	514097	-21	kworker/u16:3+flush-8:0	21:15:42	4
289226	99	38	35,2	cyclictest	691915	-21	kworker/u16:2+flush-8:0	22:57:45	4
288589	2	38	3,29	sleep7	0	-21	swapper/7	19:03:20	7
289233	99	37	35,2	cyclictest	837691	-21	kworker/u16:0+events_unbound	23:19:18	6
289233	99	37	35,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	23:51:25	6
289233	99	37	35,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	21:45:06	6
289233	99	37	34,2	cyclictest	837691	-21	kworker/u16:0+events_unbound	23:30:34	6
289226	99	37	35,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	00:32:41	4
289226	99	37	35,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	21:55:22	4
289226	99	37	35,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	21:55:22	4
289233	99	36	34,2	cyclictest	910668	-21	kworker/u16:0+events_unbound	00:21:29	6
289233	99	36	34,2	cyclictest	765765	-21	kworker/u16:3+events_unbound	23:15:33	6
289233	99	36	34,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	21:59:26	6
289233	99	36	34,2	cyclictest	514097	-21	kworker/u16:3+events_unbound	21:12:06	6
289233	99	36	34,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	22:10:38	6
289233	99	36	34,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:53:38	6
289233	99	36	34,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:53:38	6
289233	99	36	34,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:52:43	6
289226	99	36	34,2	cyclictest	765765	-21	kworker/u16:3+events_unbound	23:05:53	4
289233	99	35	33,2	cyclictest	931997	-21	kworker/u16:4+flush-8:0	00:04:09	6
289233	99	35	33,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:51:46	6
289233	99	35	33,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:45:41	6
289233	99	35	33,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:33:26	6
289233	99	35	33,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:33:26	6
289233	99	35	33,2	cyclictest	572070	-21	kworker/u16:4+flush-8:0	21:39:25	6
289233	99	35	33,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	22:20:17	6
289233	99	35	33,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:37:37	6
289226	99	35	33,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	23:10:38	4
289226	99	35	33,2	cyclictest	485563	-21	kworker/u16:0+events_unbound	21:24:07	4
289226	99	35	32,2	cyclictest	427764	-21	kworker/u16:1+flush-8:0	21:58:09	4
289233	99	34	32,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	00:16:41	6
289233	99	34	32,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:16:51	6
289233	99	34	32,2	cyclictest	678680	-21	kworker/u16:0+events_unbound	23:01:03	6
289233	99	34	32,2	cyclictest	350318	-21	kworker/u16:3+flush-8:0	20:42:46	6
289226	99	34	32,2	cyclictest	983190	-21	kworker/u16:5+events_unbound	00:27:30	4
289226	99	34	32,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	23:13:46	4
289233	99	33	31,2	cyclictest	983190	-21	kworker/u16:5+flush-8:0	00:34:00	6
289233	99	33	31,2	cyclictest	931997	-21	kworker/u16:4+events_unbound	00:00:05	6
289233	99	33	31,2	cyclictest	824208	-21	kworker/u16:1+events_unbound	23:47:17	6
289233	99	33	31,2	cyclictest	485563	-21	kworker/u16:0+events_unbound	21:25:30	6
289226	99	33	31,2	cyclictest	983190	-21	kworker/u16:5+events_unbound	00:20:46	4
289226	99	33	31,2	cyclictest	910668	-21	kworker/u16:0+events_unbound	00:00:53	4
289226	99	33	31,2	cyclictest	837691	-21	kworker/u16:0+flush-8:0	23:37:41	4
289226	99	33	31,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:35:57	4
289226	99	33	31,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:35:57	4
289226	99	33	31,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:19:51	4
289226	99	33	30,2	cyclictest	947032	-21	kworker/u16:2+events_unbound	00:17:09	4
289236	99	32	29,2	cyclictest	827	-21	dbus-daemon	19:57:44	7
289233	99	32	30,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:24:17	6
289233	99	32	30,2	cyclictest	485563	-21	kworker/u16:0+events_unbound	21:21:37	6
289226	99	32	30,2	cyclictest	983190	-21	kworker/u16:5+events_unbound	00:34:30	4
289226	99	32	30,2	cyclictest	947032	-21	kworker/u16:2+events_unbound	00:04:13	4
289226	99	32	30,2	cyclictest	824208	-21	kworker/u16:1+flush-8:0	00:10:38	4
289226	99	32	30,2	cyclictest	644633	-21	kworker/u16:2+events_unbound	22:07:38	4
289226	99	32	30,2	cyclictest	572070	-21	kworker/u16:4+flush-8:0	21:33:37	4
289226	99	32	30,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	22:25:49	4
289226	99	32	30,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	22:19:10	4
289233	99	31	29,2	cyclictest	691915	-21	kworker/u16:2+events_unbound	22:42:41	6
289233	99	31	29,2	cyclictest	678680	-21	kworker/u16:0+events_unbound	23:09:10	6
289226	99	31	29,2	cyclictest	910668	-21	kworker/u16:0+flush-8:0	23:48:29	4
289226	99	31	29,2	cyclictest	910668	-21	kworker/u16:0+events_unbound	23:57:22	4
289226	99	31	29,2	cyclictest	765765	-21	kworker/u16:3+events_unbound	23:21:42	4
289226	99	31	29,2	cyclictest	678680	-21	kworker/u16:0+events_unbound	22:30:46	4
289226	99	31	29,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	22:14:13	4
289226	99	31	29,2	cyclictest	494984	-21	kworker/u16:2+events_unbound	21:30:38	4
289226	99	31	29,2	cyclictest	427764	-21	kworker/u16:1+events_unbound	21:51:27	4
289233	99	30	28,2	cyclictest	726763	-21	kworker/u16:1+events_unbound	22:30:01	6
289233	99	30	28,2	cyclictest	644633	-21	kworker/u16:2+events_unbound	22:07:09	6
289233	99	30	28,2	cyclictest	321855	-21	kworker/u16:2+events_unbound	20:30:54	6
289226	99	30	28,2	cyclictest	572070	-21	kworker/u16:4+events_unbound	21:39:38	4
289226	99	30	27,2	cyclictest	241472	-21	kworker/u16:0+events_unbound	19:22:46	4
289233	99	29	27,2	cyclictest	983190	-21	kworker/u16:5+events_unbound	00:30:59	6
289233	99	29	27,2	cyclictest	494984	-21	kworker/u16:2+events_unbound	21:02:59	6
289233	99	29	27,2	cyclictest	427764	-21	kworker/u16:1+flush-8:0	20:19:54	6
289233	99	29	27,2	cyclictest	302872	-21	kworker/u16:1+events_unbound	19:21:30	6
289233	99	29	27,2	cyclictest	241472	-21	kworker/u16:0+events_unbound	19:28:55	6
289226	99	29	27,2	cyclictest	883680	-21	kworker/u16:2+events_unbound	23:41:09	4
289226	99	29	27,2	cyclictest	837691	-21	kworker/u16:0+flush-8:0	23:28:49	4
289226	99	29	27,2	cyclictest	726763	-21	kworker/u16:1+events_unbound	22:39:34	4
289236	99	28	26,1	cyclictest	0	-21	swapper/7	22:38:02	7
289236	99	28	23,4	cyclictest	801634	-21	latency_hist	23:02:44	7
289236	99	28	0,26	cyclictest	581482	-21	cat	21:28:12	7
289233	99	28	26,2	cyclictest	466312	-21	kworker/u16:4+events_unbound	20:37:54	6
289233	99	28	26,2	cyclictest	350318	-21	kworker/u16:3+events_unbound	20:25:55	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17