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 Wed Mar 18, 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
3605088	2	50	40,7	sleep5	0	-21	swapper/5	19:00:07	5
6265	89	48	0,42	rtkit-daemon	0	-21	swapper/6	19:00:57	6
3605627	99	47	45,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	23:44:03	6
3605627	99	46	44,2	cyclictest	3656974	-21	kworker/u16:3+events_unbound	19:49:01	6
3605627	99	46	44,2	cyclictest	3656974	-21	kworker/u16:3+events_unbound	19:49:01	6
3605627	99	46	43,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	22:08:37	6
3605627	99	45	42,2	cyclictest	4125518	-21	kworker/u16:0+flush-8:0	00:13:52	6
3605134	2	45	34,7	sleep4	0	-21	swapper/4	19:00:46	4
3605632	99	44	38,5	cyclictest	650	-21	systemd-journal	22:53:21	7
3605627	99	44	42,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:31:58	6
3605626	99	44	42,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:02:50	5
3605626	99	44	42,2	cyclictest	4063074	-21	kworker/u16:4+events_unbound	22:57:18	5
3605626	99	43	41,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:44:05	5
3605626	99	43	41,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	23:50:10	5
3605627	99	42	40,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	23:52:41	6
3605626	99	42	40,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:41:34	5
3605626	99	42	40,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:42:27	5
3605626	99	42	40,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:16:02	5
3605627	99	41	39,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	23:55:34	6
3605627	99	41	39,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:11:50	6
3605627	99	41	39,2	cyclictest	4053832	-21	kworker/u16:3+events_unbound	23:27:18	6
3605627	99	41	38,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:38:37	6
3605626	99	41	39,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:14:13	5
3605626	99	41	39,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	22:21:46	5
3605627	99	40	38,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:05:07	6
3605627	99	40	38,2	cyclictest	107869	-21	kworker/u16:4+events_unbound	00:19:05	6
3605627	99	40	37,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	00:07:18	6
3605626	99	40	38,2	cyclictest	4101349	-21	kworker/u16:2+events_unbound	23:02:02	5
3605626	99	40	38,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	22:11:13	5
3605626	99	40	38,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	23:54:51	5
3605626	99	40	38,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	00:06:25	5
3605626	99	40	37,3	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:27:01	5
3605249	2	40	5,31	sleep7	0	-21	swapper/7	19:02:25	7
3605627	99	39	37,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:40:14	6
3605627	99	39	37,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:25:15	6
3605626	99	39	37,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	00:24:59	5
3605626	99	39	37,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	21:56:30	5
3605626	99	39	37,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	21:56:30	5
3605626	99	39	37,2	cyclictest	3886243	-21	kworker/u16:4+events_unbound	21:42:27	5
3605626	99	39	37,2	cyclictest	27980	-21	kworker/u16:3+events_unbound	23:46:33	5
3605627	99	38	36,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:28:01	6
3605627	99	38	36,2	cyclictest	4101349	-21	kworker/u16:2+events_unbound	23:03:06	6
3605627	99	38	36,2	cyclictest	4053832	-21	kworker/u16:3+events_unbound	22:58:17	6
3605627	99	38	36,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	22:03:30	6
3605626	99	38	36,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:22:37	5
3605626	99	38	36,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	00:20:37	5
3605626	99	38	36,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	00:09:09	5
3605626	99	38	36,2	cyclictest	4053832	-21	kworker/u16:3+events_unbound	22:47:10	5
3605626	99	38	36,2	cyclictest	3886243	-21	kworker/u16:4+events_unbound	21:36:43	5
3605626	99	38	36,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:20:01	5
3605627	99	37	35,2	cyclictest	4053832	-21	kworker/u16:3+events_unbound	23:16:53	6
3605627	99	37	35,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:48:27	6
3605627	99	37	35,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:22:58	6
3605627	99	37	35,2	cyclictest	3874333	-21	kworker/u16:0+events_unbound	21:21:19	6
3605627	99	37	35,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:46:18	6
3605627	99	37	35,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:32:49	6
3605627	99	37	35,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:10:24	6
3605627	99	36	34,2	cyclictest	49055	-21	kworker/u16:2+events_unbound	00:02:01	6
3605627	99	36	34,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	21:57:26	6
3605627	99	36	34,2	cyclictest	3967813	-21	kworker/u16:5+events_unbound	21:57:26	6
3605627	99	36	34,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	22:08:29	6
3605627	99	36	34,2	cyclictest	13158	-21	kworker/u16:4+events_unbound	23:42:54	6
3605626	99	36	34,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:30:49	5
3605626	99	36	34,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:30:49	5
3605626	99	36	34,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:32:37	5
3605626	99	36	34,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:17:34	5
3605626	99	36	34,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:17:34	5
3605626	99	36	34,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:11:42	5
3605632	99	35	34,0	cyclictest	0	-21	swapper/7	22:12:17	7
3605627	99	35	33,2	cyclictest	4063074	-21	kworker/u16:4+events_unbound	22:38:13	6
3605627	99	35	33,2	cyclictest	3838427	-21	kworker/u16:1+events_unbound	21:15:45	6
3605627	99	35	33,2	cyclictest	3838427	-21	kworker/u16:1+events_unbound	21:15:45	6
3605626	99	35	33,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:51:34	5
3605626	99	35	33,2	cyclictest	3981836	-21	kworker/u16:0+events_unbound	22:36:18	5
3605632	99	34	30,3	cyclictest	124	-21	kswapd0	23:43:49	7
3605627	99	34	32,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:29:15	6
3605627	99	34	32,2	cyclictest	4162962	-21	kworker/u16:1+events_unbound	00:29:15	6
3605627	99	34	32,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	20:40:13	6
3605626	99	34	32,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	22:26:12	5
3605626	99	34	32,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	21:32:55	5
3605622	99	34	32,2	cyclictest	3809981	-21	kworker/u16:3+events_unbound	21:43:55	4
3605627	99	33	31,2	cyclictest	4063074	-21	kworker/u16:4+events_unbound	23:10:08	6
3605627	99	33	31,2	cyclictest	3886243	-21	kworker/u16:4+events_unbound	21:36:53	6
3605627	99	33	31,2	cyclictest	3799921	-21	kworker/u16:2+flush-8:0	21:04:29	6
3605627	99	33	31,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	22:24:26	6
3605627	99	33	31,2	cyclictest	3714272	-21	kworker/u16:1+flush-8:0	20:29:05	6
3605626	99	33	31,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:33:26	5
3605626	99	33	31,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	00:15:36	5
3605626	99	33	30,2	cyclictest	3799921	-21	kworker/u16:2+events_unbound	20:53:46	5
3605632	99	32	31,0	cyclictest	0	-21	swapper/7	00:27:24	7
3605632	99	32	26,5	cyclictest	3723795	-21	latency_hist	20:03:37	7
3605627	99	32	30,2	cyclictest	4063074	-21	kworker/u16:4+events_unbound	22:52:00	6
3605627	99	32	30,2	cyclictest	4053832	-21	kworker/u16:3+events_unbound	23:21:07	6
3605626	99	32	30,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:36:59	5
3605626	99	32	30,2	cyclictest	3656974	-21	kworker/u16:3+flush-8:0	19:49:05	5
3605626	99	32	30,2	cyclictest	3656974	-21	kworker/u16:3+flush-8:0	19:49:05	5
3605626	99	32	30,2	cyclictest	3586357	-21	kworker/u16:1+events_unbound	19:17:11	5
3605622	99	32	30,2	cyclictest	3714272	-21	kworker/u16:1+events_unbound	20:23:36	4
3605627	99	31	29,2	cyclictest	4125518	-21	kworker/u16:0+events_unbound	23:35:19	6
3605627	99	31	29,2	cyclictest	3967813	-21	kworker/u16:5+flush-8:0	22:14:09	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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