OSADL QA Farm on Real-time of Mainline Linux

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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 Feb 17, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3495331	2	55	45,7	sleep5	0	-21	swapper/5	19:04:52	5
3495218	2	54	44,7	sleep4	0	-21	swapper/4	19:03:14	4
3495211	2	52	29,7	sleep6	0	-21	swapper/6	19:03:08	6
3495679	99	50	47,2	cyclictest	4135501	-21	kworker/u16:2+events_unbound	00:10:59	5
3495674	99	48	46,2	cyclictest	3977080	-21	kworker/u16:6+flush-8:0	23:16:01	4
3495674	99	48	46,2	cyclictest	3719122	-21	kworker/u16:1+flush-8:0	21:51:00	4
3495674	99	46	44,2	cyclictest	4075611	-21	kworker/u16:3+events_unbound	23:55:33	4
3495674	99	46	44,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:40:32	4
3495684	99	43	39,2	cyclictest	3845491	-21	ntp_states	21:50:58	7
3495674	99	42	40,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:53:18	4
3495674	99	42	40,2	cyclictest	3719122	-21	kworker/u16:1+events_unbound	21:50:17	4
3495674	99	42	38,3	cyclictest	3556959	-21	kworker/u16:0+events_unbound	20:35:32	4
3495679	99	41	38,2	cyclictest	3847598	-21	kworker/u16:5+events_unbound	22:00:34	5
3495680	99	40	38,2	cyclictest	3546417	-21	kworker/u16:2+flush-8:0	19:40:32	6
3495674	99	40	38,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:35:17	4
3495674	99	40	37,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	00:11:03	4
3495679	99	39	37,2	cyclictest	4192986	-21	kworker/u16:0+events_unbound	00:22:54	5
3495679	99	39	37,2	cyclictest	3965245	-21	kworker/u16:3+events_unbound	22:49:10	5
3495679	99	39	37,2	cyclictest	3965245	-21	kworker/u16:3+events_unbound	22:49:10	5
3495679	99	39	35,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:04:54	5
3495674	99	39	37,2	cyclictest	4135501	-21	kworker/u16:2+events_unbound	00:07:42	4
3495674	99	39	36,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:41:41	4
3495333	2	39	3,31	sleep7	0	-21	swapper/7	19:04:54	7
3495679	99	38	36,2	cyclictest	3920611	-21	kworker/u16:2+events_unbound	22:27:58	5
3495679	99	38	36,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	22:23:14	5
3495679	99	38	36,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:43:58	5
3495674	99	38	36,2	cyclictest	4075611	-21	kworker/u16:3+events_unbound	23:51:58	4
3495674	99	38	36,2	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:38:29	4
3495674	99	38	36,2	cyclictest	3921643	-21	kworker/u16:5+events_unbound	22:39:22	4
3495674	99	38	36,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	23:25:29	4
3495674	99	38	36,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	22:18:29	4
3495674	99	38	36,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:23:38	4
3495674	99	38	36,2	cyclictest	3556959	-21	kworker/u16:0+events_unbound	19:56:03	4
3495680	99	37	33,3	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:20:32	6
3495679	99	37	35,2	cyclictest	4075611	-21	kworker/u16:3+events_unbound	23:49:18	5
3495679	99	37	35,2	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:25:02	5
3495679	99	37	35,2	cyclictest	3921643	-21	kworker/u16:5+events_unbound	22:35:19	5
3495679	99	37	35,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	00:34:13	5
3495679	99	37	35,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:44:25	5
3495679	99	37	35,2	cyclictest	3719122	-21	kworker/u16:1+events_unbound	21:11:04	5
3495674	99	37	35,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	00:18:54	4
3495674	99	37	35,2	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:13:14	4
3495674	99	37	35,2	cyclictest	3894197	-21	kworker/u16:0+events_unbound	22:13:59	4
3495674	99	37	35,2	cyclictest	3847598	-21	kworker/u16:5+events_unbound	22:06:30	4
3495674	99	37	35,2	cyclictest	3847598	-21	kworker/u16:5+events_unbound	22:03:59	4
3495674	99	37	35,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:31:50	4
3495674	99	37	35,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:32:06	4
3495674	99	37	35,2	cyclictest	3729092	-21	kworker/u16:2+events_unbound	21:18:49	4
3495679	99	36	34,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	23:44:34	5
3495679	99	36	34,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	00:19:41	5
3495679	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:28:21	5
3495679	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:28:21	5
3495679	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:15:02	5
3495679	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:00:26	5
3495679	99	36	34,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:11:13	5
3495679	99	36	34,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:31:19	5
3495679	99	36	34,2	cyclictest	3546417	-21	kworker/u16:2+events_unbound	20:45:57	5
3495674	99	36	34,2	cyclictest	4192986	-21	kworker/u16:0+events_unbound	00:25:21	4
3495674	99	36	34,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	23:48:21	4
3495674	99	36	34,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	00:26:53	4
3495674	99	36	34,2	cyclictest	4075611	-21	kworker/u16:3+events_unbound	23:43:22	4
3495674	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:27:42	4
3495674	99	36	34,2	cyclictest	3977080	-21	kworker/u16:6+events_unbound	23:27:42	4
3495674	99	36	34,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	00:02:58	4
3495674	99	36	34,2	cyclictest	3847598	-21	kworker/u16:5+events_unbound	21:58:29	4
3495674	99	36	34,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:27:46	4
3495674	99	36	34,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:27:46	4
3495674	99	36	34,2	cyclictest	3719122	-21	kworker/u16:1+events_unbound	21:24:33	4
3495674	99	36	34,2	cyclictest	3719122	-21	kworker/u16:1+events_unbound	21:12:57	4
3495679	99	35	33,2	cyclictest	4135501	-21	kworker/u16:2+events_unbound	00:06:57	5
3495679	99	35	33,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	00:05:00	5
3495679	99	35	33,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:27:58	5
3495679	99	35	33,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:27:58	5
3495674	99	35	33,2	cyclictest	3921643	-21	kworker/u16:5+events_unbound	22:30:22	4
3495674	99	35	33,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	23:00:18	4
3495679	99	34	32,2	cyclictest	4192986	-21	kworker/u16:0+events_unbound	00:29:57	5
3495679	99	34	32,2	cyclictest	4135501	-21	kworker/u16:2+events_unbound	23:57:01	5
3495679	99	34	32,2	cyclictest	4004362	-21	kworker/u16:2+flush-8:0	23:06:25	5
3495679	99	34	32,2	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:16:36	5
3495679	99	34	32,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	23:51:54	5
3495679	99	34	32,2	cyclictest	3776563	-21	kworker/u16:0+events_unbound	21:37:58	5
3495679	99	34	32,2	cyclictest	3762320	-21	kworker/u16:3+events_unbound	21:17:46	5
3495674	99	34	32,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	00:32:25	4
3495674	99	34	32,2	cyclictest	4004362	-21	kworker/u16:2+events_unbound	23:02:18	4
3495674	99	34	32,2	cyclictest	3729092	-21	kworker/u16:2+events_unbound	21:41:29	4
3495674	99	34	32,2	cyclictest	3719122	-21	kworker/u16:1+events_unbound	21:09:38	4
3495674	99	34	31,2	cyclictest	3906159	-21	kworker/u16:1+events_unbound	23:05:33	4
3495684	99	33	31,1	cyclictest	3728669	-21	diskmemload	22:04:27	7
3495680	99	33	31,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:05:53	6
3495679	99	33	31,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	21:57:50	5
3495679	99	33	31,2	cyclictest	3729092	-21	kworker/u16:2+events_unbound	22:07:29	5
3495679	99	33	31,2	cyclictest	3729092	-21	kworker/u16:2+events_unbound	21:24:29	5
3495679	99	32	30,2	cyclictest	3921643	-21	kworker/u16:5+events_unbound	22:37:34	5
3495679	99	32	30,2	cyclictest	3847377	-21	kworker/u16:4+flush-8:0	22:16:30	5
3495679	99	32	30,2	cyclictest	3847377	-21	kworker/u16:4+events_unbound	22:51:21	5
3495679	99	32	30,2	cyclictest	3729092	-21	kworker/u16:2+events_unbound	21:09:14	5
3495679	99	32	30,2	cyclictest	3546852	-21	kworker/u16:4+events_unbound	20:39:42	5
3495684	99	31	30,0	cyclictest	0	-21	swapper/7	23:38:27	7
3495680	99	31	29,2	cyclictest	4097186	-21	kworker/u16:4+events_unbound	23:55:52	6
3495679	99	31	29,2	cyclictest	4075611	-21	kworker/u16:3+events_unbound	23:39:24	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17