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 50 highest latencies:

System rack0slot2.osadl.org (updated Sun Mar 22, 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
468614	2	58	48,7	sleep4	0	-21	swapper/4	18:58:28	4
478012	99	48	42,5	cyclictest	1031885	-21	latency_hist	23:18:20	7
478011	99	46	44,2	cyclictest	1124618	-21	kworker/u16:5+flush-8:0	00:08:20	6
477405	2	43	6,32	sleep7	0	-21	swapper/7	18:59:03	7
478011	99	42	40,2	cyclictest	974207	-21	kworker/u16:3+events_unbound	23:01:19	6
478011	99	42	40,2	cyclictest	770316	-21	kworker/u16:1+events_unbound	21:35:14	6
478011	99	42	40,2	cyclictest	501120	-21	kworker/u16:0+events_unbound	22:12:47	6
478011	99	41	39,2	cyclictest	671776	-21	kworker/u16:3+events_unbound	21:10:54	6
478011	99	41	39,2	cyclictest	671776	-21	kworker/u16:3+events_unbound	21:10:54	6
477576	2	41	31,7	sleep6	0	-21	swapper/6	19:01:27	6
478011	99	40	38,2	cyclictest	889638	-21	kworker/u16:2+events_unbound	22:34:11	6
478011	99	39	37,2	cyclictest	839595	-21	kworker/u16:4+events_unbound	22:16:46	6
478011	99	39	37,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	23:51:15	6
478011	99	39	37,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	23:51:15	6
478011	99	39	37,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	22:58:19	6
478011	99	39	37,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	22:47:07	6
478011	99	39	37,2	cyclictest	501120	-21	kworker/u16:0+events_unbound	21:47:11	6
478011	99	39	37,2	cyclictest	1138904	-21	kworker/u16:1+events_unbound	00:12:10	6
478011	99	39	36,2	cyclictest	449309	-21	kworker/u16:1+events_unbound	19:03:23	6
478002	99	39	37,2	cyclictest	1124618	-21	kworker/u16:5+flush-8:0	00:33:19	4
478002	99	39	37,2	cyclictest	1124618	-21	kworker/u16:5+flush-8:0	00:33:19	4
478012	99	38	33,4	cyclictest	710719	-21	latency_hist	21:03:20	7
478011	99	38	36,2	cyclictest	974207	-21	kworker/u16:3+events_unbound	23:40:46	6
478011	99	38	36,2	cyclictest	889638	-21	kworker/u16:2+events_unbound	22:18:45	6
478011	99	38	36,2	cyclictest	839595	-21	kworker/u16:4+events_unbound	22:01:10	6
478011	99	38	36,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	21:54:45	6
478011	99	38	36,2	cyclictest	770316	-21	kworker/u16:1+events_unbound	21:30:15	6
478011	99	38	36,2	cyclictest	722391	-21	kworker/u16:2+events_unbound	21:39:26	6
478011	99	38	36,2	cyclictest	1138904	-21	kworker/u16:1+events_unbound	00:15:58	6
478011	99	38	36,2	cyclictest	1115477	-21	kworker/u16:4+events_unbound	00:02:10	6
478011	99	37	35,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	22:51:58	6
478011	99	37	35,2	cyclictest	653437	-21	kworker/u16:1+events_unbound	21:05:43	6
478011	99	37	35,2	cyclictest	501120	-21	kworker/u16:0+events_unbound	22:25:55	6
478011	99	37	35,2	cyclictest	501120	-21	kworker/u16:0+events_unbound	22:08:06	6
478011	99	37	35,2	cyclictest	1138904	-21	kworker/u16:1+events_unbound	00:31:03	6
478011	99	37	35,2	cyclictest	1138904	-21	kworker/u16:1+events_unbound	00:31:03	6
478011	99	37	35,2	cyclictest	1067531	-21	kworker/u16:0+events_unbound	23:56:02	6
478011	99	36	34,2	cyclictest	974207	-21	kworker/u16:3+events_unbound	23:44:38	6
478011	99	36	34,2	cyclictest	974207	-21	kworker/u16:3+events_unbound	23:20:54	6
478011	99	36	34,2	cyclictest	818222	-21	kworker/u16:1+flush-8:0	22:28:50	6
478011	99	36	34,2	cyclictest	818222	-21	kworker/u16:1+flush-8:0	22:28:50	6
478011	99	36	34,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	23:12:39	6
478011	99	36	34,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	23:12:39	6
478011	99	36	34,2	cyclictest	818222	-21	kworker/u16:1+events_unbound	23:06:26	6
478011	99	36	34,2	cyclictest	501120	-21	kworker/u16:0+events_unbound	21:25:43	6
478011	99	36	34,2	cyclictest	1138904	-21	kworker/u16:1+events_unbound	00:18:29	6
478011	99	36	34,2	cyclictest	1044150	-21	kworker/u16:2+events_unbound	23:30:30	6
478011	99	36	34,2	cyclictest	1044150	-21	kworker/u16:2+events_unbound	23:25:37	6
478011	99	35	33,2	cyclictest	722391	-21	kworker/u16:2+events_unbound	21:52:47	6
478011	99	35	33,2	cyclictest	722391	-21	kworker/u16:2+events_unbound	21:52:47	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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