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 Sun Sep 06, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2351057	2	61	51,7	sleep5	0	-21	swapper/5	07:05:53	5
2351267	2	58	22,31	sleep7	0	-21	swapper/7	07:08:52	7
2351056	2	58	47,7	sleep4	0	-21	swapper/4	07:05:52	4
2351597	99	55	53,2	cyclictest	2675159	-21	kworker/u16:3+flush-8:0	11:05:13	6
2351592	99	39	37,2	cyclictest	2601082	-21	kworker/u16:1+events_unbound	09:37:50	4
2351597	99	38	36,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:39:43	6
2351599	99	37	32,4	cyclictest	2786010	-21	latency_hist	10:29:16	7
2351597	99	37	35,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:21:50	6
2351597	99	37	35,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:35:35	6
2351597	99	37	34,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:04:20	6
2351597	99	37	34,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:29:19	6
2351592	99	37	35,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:31:18	4
2351592	99	37	35,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:19:25	4
2351592	99	37	35,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:13:49	4
2351592	99	37	35,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:38:42	4
2351592	99	37	35,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:38:42	4
2351592	99	37	35,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:46:31	4
2351592	99	37	35,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:12:31	4
2351592	99	37	35,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:43:51	4
2351592	99	37	33,3	cyclictest	2921436	-21	kworker/u16:4+events_unbound	11:39:15	4
2351592	99	37	32,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:22:58	4
2351597	99	36	34,2	cyclictest	3032271	-21	kworker/u16:2+events_unbound	12:24:06	6
2351597	99	36	34,2	cyclictest	3032271	-21	kworker/u16:2+events_unbound	12:11:50	6
2351597	99	36	34,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	11:56:15	6
2351597	99	36	34,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	11:56:15	6
2351597	99	36	34,2	cyclictest	2835284	-21	kworker/u16:1+events_unbound	11:23:57	6
2351597	99	36	34,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	09:57:22	6
2351597	99	36	34,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	09:57:22	6
2351592	99	36	34,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:07:30	4
2351592	99	36	34,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:16:51	4
2351592	99	36	34,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:02:35	4
2351592	99	36	34,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:25:19	4
2351592	99	36	34,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:18:15	4
2351592	99	36	34,2	cyclictest	2346245	-21	kworker/u16:3+events_unbound	07:54:46	4
2351599	99	35	29,5	cyclictest	2462062	-21	latency_hist	08:04:17	7
2351597	99	35	33,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:03:39	6
2351597	99	35	33,2	cyclictest	2601082	-21	kworker/u16:1+events_unbound	09:19:06	6
2351597	99	35	33,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:10:55	6
2351592	99	35	33,2	cyclictest	3032271	-21	kworker/u16:2+events_unbound	12:27:39	4
2351592	99	35	33,2	cyclictest	2946428	-21	kworker/u16:2+events_unbound	11:58:22	4
2351592	99	35	33,2	cyclictest	2946428	-21	kworker/u16:2+events_unbound	11:58:22	4
2351592	99	35	33,2	cyclictest	2943477	-21	kworker/u16:0+events_unbound	11:30:47	4
2351592	99	35	33,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	12:05:58	4
2351592	99	35	33,2	cyclictest	2835284	-21	kworker/u16:1+events_unbound	10:58:50	4
2351592	99	35	33,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:27:03	4
2624670	2	34	0,1	chrt	2624669	-21	rm	09:22:24	7
2351597	99	34	32,2	cyclictest	3032271	-21	kworker/u16:2+flush-8:0	12:14:50	6
2351597	99	34	32,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:27:35	6
2351597	99	34	32,2	cyclictest	2946428	-21	kworker/u16:2+events_unbound	11:42:33	6
2351597	99	34	32,2	cyclictest	2798735	-21	kworker/u16:0+events_unbound	10:50:47	6
2351597	99	34	32,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:01:50	6
2351597	99	34	32,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:17:47	6
2351597	99	34	32,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:17:47	6
2351597	99	34	32,2	cyclictest	2601082	-21	kworker/u16:1+events_unbound	09:30:51	6
2351597	99	34	32,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:50:30	6
2351597	99	34	32,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:23:30	6
2351592	99	34	32,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:01:01	4
2351592	99	34	32,2	cyclictest	2943477	-21	kworker/u16:0+events_unbound	11:53:53	4
2351592	99	34	32,2	cyclictest	2943477	-21	kworker/u16:0+events_unbound	11:45:21	4
2351592	99	34	32,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	12:38:18	4
2351592	99	34	32,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	12:38:18	4
2351592	99	34	32,2	cyclictest	2921436	-21	kworker/u16:4+events_unbound	12:15:21	4
2351592	99	34	32,2	cyclictest	2893299	-21	kworker/u16:0+events_unbound	11:15:33	4
2351592	99	34	32,2	cyclictest	2893299	-21	kworker/u16:0+events_unbound	11:15:33	4
2351592	99	34	32,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:50:39	4
2351592	99	34	32,2	cyclictest	2601082	-21	kworker/u16:1+events_unbound	09:20:55	4
2351592	99	34	32,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:56:02	4
2351592	99	34	32,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:56:02	4
2351592	99	34	32,2	cyclictest	2452019	-21	kworker/u16:5+events_unbound	09:46:22	4
2351597	99	33	31,2	cyclictest	2943477	-21	kworker/u16:0+events_unbound	11:46:53	6
2351597	99	33	31,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:25:03	6
2351597	99	33	31,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	09:46:55	6
2351597	99	33	31,2	cyclictest	2481778	-21	kworker/u16:1+events_unbound	08:14:19	6
2351593	99	33	31,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:50:14	5
2351592	99	33	31,2	cyclictest	2893299	-21	kworker/u16:0+events_unbound	11:10:39	4
2351592	99	33	31,2	cyclictest	2798735	-21	kworker/u16:0+flush-8:0	10:40:14	4
2351592	99	33	31,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:23:18	4
2351592	99	33	31,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	11:28:17	4
2351592	99	33	31,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:52:35	4
2351592	99	33	31,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:11:40	4
2351597	99	32	30,2	cyclictest	3032271	-21	kworker/u16:2+events_unbound	12:37:06	6
2351597	99	32	30,2	cyclictest	3032271	-21	kworker/u16:2+events_unbound	12:37:06	6
2351597	99	32	30,2	cyclictest	3007731	-21	kworker/u16:3+events_unbound	12:07:39	6
2351597	99	32	30,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:13:14	6
2351597	99	32	30,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	09:43:14	6
2351597	99	32	30,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:25:23	6
2351597	99	32	30,2	cyclictest	2452019	-21	kworker/u16:5+events_unbound	08:19:47	6
2351592	99	32	30,2	cyclictest	2835284	-21	kworker/u16:1+events_unbound	11:03:22	4
2351592	99	32	30,2	cyclictest	2712070	-21	kworker/u16:1+events_unbound	10:30:30	4
2351592	99	32	30,2	cyclictest	2511323	-21	kworker/u16:0+events_unbound	09:31:50	4
2351597	99	31	29,2	cyclictest	2946428	-21	kworker/u16:2+events_unbound	11:50:02	6
2351597	99	31	29,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:58:46	6
2351597	99	31	29,2	cyclictest	2675159	-21	kworker/u16:3+events_unbound	10:15:58	6
2351597	99	31	29,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:36:35	6
2351597	99	31	29,2	cyclictest	2662918	-21	kworker/u16:2+events_unbound	10:36:35	6
2351593	99	31	28,2	cyclictest	2278137	-21	kworker/u16:2+events_unbound	07:09:18	5
2351592	99	31	29,2	cyclictest	2943477	-21	kworker/u16:0+events_unbound	11:43:47	4
2351592	99	31	29,2	cyclictest	2471618	-21	kworker/u16:0+events_unbound	08:08:43	4
2351171	2	31	21,7	sleep6	0	-21	swapper/6	07:07:31	6
2351599	99	30	28,1	cyclictest	0	-21	swapper/7	08:06:30	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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