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 Thu May 07, 2026 12:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
540655	2	95	0,0	sleep4	0	-21	swapper/4	12:21:29	4
4023423	2	55	45,7	sleep4	0	-21	swapper/4	07:07:41	4
4023366	2	41	31,7	sleep5	0	-21	swapper/5	07:06:54	5
4023771	99	40	38,2	cyclictest	417194	-21	kworker/u16:1+events_unbound	12:11:24	5
4023310	2	40	0,32	sleep7	0	-21	swapper/7	07:06:08	7
4023776	99	39	36,1	cyclictest	565152	-21	sh	12:31:36	7
4023771	99	39	37,2	cyclictest	539318	-21	kworker/u16:0+events_unbound	12:26:47	5
4023771	99	39	37,2	cyclictest	260578	-21	kworker/u16:3+events_unbound	11:10:00	5
4023763	99	39	37,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:43:55	4
4023776	99	38	35,2	cyclictest	504865	-21	ssh	12:08:11	7
4023771	99	38	36,2	cyclictest	492916	-21	kworker/u16:3+events_unbound	12:37:28	5
4023771	99	38	36,2	cyclictest	431770	-21	kworker/u16:2+events_unbound	12:07:37	5
4023771	99	38	36,2	cyclictest	370700	-21	kworker/u16:0+flush-8:0	11:58:50	5
4023771	99	38	36,2	cyclictest	370700	-21	kworker/u16:0+events_unbound	11:47:28	5
4023771	99	38	36,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	09:56:53	5
4023776	99	37	35,1	cyclictest	259939	-21	ssh	10:27:28	7
4023771	99	37	35,2	cyclictest	4143288	-21	kworker/u16:0+events_unbound	08:50:32	5
4023771	99	37	35,2	cyclictest	309539	-21	kworker/u16:0+events_unbound	10:51:17	5
4023771	99	37	35,2	cyclictest	16858	-21	kworker/u16:3+events_unbound	09:11:48	5
4023771	99	37	35,2	cyclictest	16858	-21	kworker/u16:3+events_unbound	09:11:48	5
4023771	99	37	35,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	09:33:28	5
4023776	99	36	35,0	cyclictest	0	-21	swapper/7	11:46:00	7
4023771	99	36	34,2	cyclictest	492916	-21	kworker/u16:3+events_unbound	12:23:17	5
4023771	99	36	34,2	cyclictest	370700	-21	kworker/u16:0+events_unbound	11:27:20	5
4023771	99	36	34,2	cyclictest	346677	-21	kworker/u16:1+events_unbound	11:05:44	5
4023771	99	36	34,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:43:16	5
4023776	99	35	34,0	cyclictest	0	-21	swapper/7	11:52:56	7
4023776	99	35	34,0	cyclictest	0	-21	swapper/7	10:15:13	7
4023776	99	35	34,0	cyclictest	0	-21	swapper/7	09:22:00	7
4023776	99	35	32,2	cyclictest	578124	-21	ssh	12:37:59	7
4023771	99	35	33,2	cyclictest	86757	-21	kworker/u16:1+events_unbound	09:50:20	5
4023771	99	35	33,2	cyclictest	86757	-21	kworker/u16:1+events_unbound	09:50:20	5
4023771	99	35	33,2	cyclictest	86757	-21	kworker/u16:1+events_unbound	09:26:00	5
4023771	99	35	33,2	cyclictest	539318	-21	kworker/u16:0+events_unbound	12:31:03	5
4023771	99	35	33,2	cyclictest	417194	-21	kworker/u16:1+events_unbound	11:43:08	5
4023771	99	35	33,2	cyclictest	4143288	-21	kworker/u16:0+events_unbound	09:15:04	5
4023771	99	35	33,2	cyclictest	392773	-21	kworker/u16:2+events_unbound	11:20:20	5
4023771	99	35	33,2	cyclictest	370700	-21	kworker/u16:0+events_unbound	11:36:17	5
4023771	99	35	33,2	cyclictest	260578	-21	kworker/u16:3+events_unbound	11:30:08	5
4023771	99	35	33,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:37:24	5
4023771	99	35	33,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:30:12	5
4023771	99	35	33,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:15:56	5
4023771	99	35	33,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	10:12:08	5
4023771	99	35	33,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	10:07:20	5
4023771	99	35	33,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	09:45:21	5
4023763	99	35	33,2	cyclictest	309539	-21	kworker/u16:0+events_unbound	10:53:45	4
4023776	99	34	33,0	cyclictest	0	-21	swapper/7	10:22:08	7
4023776	99	34	33,0	cyclictest	0	-21	swapper/7	09:10:44	7
4023776	99	34	33,0	cyclictest	0	-21	swapper/7	09:10:44	7
4023776	99	34	32,1	cyclictest	405059	-21	ssh	11:24:28	7
4023771	99	34	32,2	cyclictest	370700	-21	kworker/u16:0+events_unbound	11:17:12	5
4023771	99	34	32,2	cyclictest	3312377	-21	kworker/u16:2+events_unbound	08:36:32	5
4023771	99	34	32,2	cyclictest	285476	-21	kworker/u16:1+events_unbound	10:46:08	5
4023771	99	34	32,2	cyclictest	16858	-21	kworker/u16:3+events_unbound	09:22:04	5
4023771	99	34	32,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	09:39:08	5
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	11:21:56	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	11:10:53	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	10:56:20	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	10:44:05	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	10:35:17	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	09:41:09	7
4023776	99	33	32,0	cyclictest	0	-21	swapper/7	09:36:20	7
4023771	99	33	31,2	cyclictest	492916	-21	kworker/u16:3+events_unbound	12:17:20	5
4023771	99	33	31,2	cyclictest	417194	-21	kworker/u16:1+events_unbound	11:51:11	5
4023771	99	33	31,2	cyclictest	4143288	-21	kworker/u16:0+events_unbound	08:40:32	5
4023771	99	33	31,2	cyclictest	4094853	-21	kworker/u16:4+events_unbound	07:52:33	5
4023771	99	33	31,2	cyclictest	4066256	-21	kworker/u16:0+events_unbound	07:29:40	5
4023776	99	32	31,0	cyclictest	0	-21	swapper/7	12:21:32	7
4023776	99	32	31,0	cyclictest	0	-21	swapper/7	11:04:32	7
4023776	99	32	31,0	cyclictest	0	-21	swapper/7	09:55:13	7
4023776	99	32	31,0	cyclictest	0	-21	swapper/7	09:47:28	7
4023772	99	32	30,2	cyclictest	417194	-21	kworker/u16:1+events_unbound	12:18:42	6
4023771	99	32	30,2	cyclictest	211604	-21	kworker/u16:2+events_unbound	10:19:21	5
4023771	99	32	30,2	cyclictest	101538	-21	kworker/u16:4+events_unbound	09:58:42	5
4023776	99	31	30,0	cyclictest	0	-21	swapper/7	11:15:17	7
4023776	99	31	30,0	cyclictest	0	-21	swapper/7	10:39:08	7
4023776	99	31	30,0	cyclictest	0	-21	swapper/7	09:52:49	7
4023776	99	31	30,0	cyclictest	0	-21	swapper/7	09:52:49	7
4023776	99	31	30,0	cyclictest	0	-21	swapper/7	09:25:41	7
4023771	99	31	29,2	cyclictest	431770	-21	kworker/u16:2+events_unbound	11:58:11	5
4023771	99	31	29,2	cyclictest	3312377	-21	kworker/u16:2+events_unbound	08:29:41	5
4023771	99	31	29,2	cyclictest	3312377	-21	kworker/u16:2+events_unbound	08:29:41	5
4023771	99	31	29,2	cyclictest	3312377	-21	kworker/u16:2+events_unbound	07:42:32	5
4023776	99	30	29,0	cyclictest	0	-21	swapper/7	12:23:31	7
4023776	99	30	29,0	cyclictest	0	-21	swapper/7	08:54:48	7
4023771	99	30	28,2	cyclictest	3312377	-21	kworker/u16:2+events_unbound	08:27:13	5
4023776	99	29	24,4	cyclictest	4152540	-21	latency_hist	08:13:30	7
4023772	99	29	27,2	cyclictest	260578	-21	kworker/u16:3+events_unbound	11:13:57	6
4023771	99	29	27,2	cyclictest	86757	-21	kworker/u16:1+events_unbound	09:35:35	5
4023776	99	28	26,1	cyclictest	0	-21	swapper/7	09:14:28	7
4023776	99	28	0,27	cyclictest	55610	-21	sshd-session	09:03:30	7
4023772	99	28	25,2	cyclictest	3312377	-21	kworker/u16:2+flush-8:0	07:18:56	6
4023771	99	28	26,2	cyclictest	309539	-21	kworker/u16:0+events_unbound	11:02:41	5
4023771	99	28	26,2	cyclictest	260578	-21	kworker/u16:3+flush-8:0	10:58:23	5
223390	2	28	0,1	chrt	223388	-21	ssh	10:12:46	7
4023776	99	27	26,0	cyclictest	0	-21	swapper/7	10:00:38	7
4023776	99	27	26,0	cyclictest	0	-21	swapper/7	08:28:37	7
4023776	99	27	26,0	cyclictest	0	-21	swapper/7	08:28:37	7
4023772	99	27	25,2	cyclictest	4085150	-21	kworker/u16:1+events_unbound	07:43:52	6
4023771	99	27	25,2	cyclictest	4143288	-21	kworker/u16:0+events_unbound	09:06:32	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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