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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 Thu Jun 11, 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
3885728	2	92	0,1	sleep7	0	-21	swapper/7	11:01:30	7
3367602	99	55	53,2	cyclictest	3399521	-21	kworker/u16:2+flush-8:0	08:11:36	4
3367602	99	51	48,2	cyclictest	3399521	-21	kworker/u16:2+flush-8:0	07:21:36	4
3367093	2	47	37,7	sleep4	0	-21	swapper/4	07:02:48	4
3367602	99	43	40,2	cyclictest	3638403	-21	kworker/u16:2+events_unbound	09:36:13	4
3367150	2	43	33,7	sleep5	0	-21	swapper/5	07:03:37	5
3367602	99	40	38,2	cyclictest	3582918	-21	kworker/u16:3+events_unbound	10:21:12	4
3367067	2	39	3,31	sleep7	0	-21	swapper/7	07:02:27	7
3367607	99	37	34,2	cyclictest	3795707	-21	kworker/u16:1+events_unbound	12:16:24	6
3367602	99	37	34,2	cyclictest	3582918	-21	kworker/u16:3+flush-8:0	10:05:36	4
3367602	99	36	34,2	cyclictest	3592228	-21	kworker/u16:4+flush-8:0	09:56:56	4
3367602	99	35	33,2	cyclictest	3795707	-21	kworker/u16:1+events_unbound	10:53:52	4
3367602	99	35	33,2	cyclictest	3722883	-21	kworker/u16:0+events_unbound	10:10:21	4
3367602	99	35	33,2	cyclictest	3638403	-21	kworker/u16:2+flush-8:0	09:21:44	4
3367602	99	35	33,2	cyclictest	3399521	-21	kworker/u16:2+events_unbound	08:06:11	4
3367602	99	35	32,2	cyclictest	3592228	-21	kworker/u16:4+events_unbound	09:11:49	4
3367602	99	35	32,2	cyclictest	3592228	-21	kworker/u16:4+events_unbound	09:11:49	4
3367608	99	34	29,4	cyclictest	3795274	-21	latency_hist	10:26:10	7
3367602	99	34	32,2	cyclictest	3638403	-21	kworker/u16:2+events_unbound	10:39:32	4
3367602	99	32	30,2	cyclictest	3795707	-21	kworker/u16:1+events_unbound	12:00:52	4
3367602	99	32	30,2	cyclictest	3795707	-21	kworker/u16:1+events_unbound	11:44:43	4
3367602	99	32	30,2	cyclictest	3638403	-21	kworker/u16:2+events_unbound	10:20:56	4
3817142	2	31	0,1	chrt	3817140	-21	ssh	10:31:57	7
3367602	99	31	29,2	cyclictest	3988460	-21	kworker/u16:2+events_unbound	12:18:51	4
3367602	99	31	29,2	cyclictest	3988460	-21	kworker/u16:2+events_unbound	12:02:32	4
3367602	99	31	29,2	cyclictest	3582918	-21	kworker/u16:3+flush-8:0	09:47:08	4
3367602	99	31	29,2	cyclictest	3582918	-21	kworker/u16:3+flush-8:0	09:47:08	4
3367602	99	31	27,3	cyclictest	3843942	-21	kworker/u16:0+flush-8:0	10:56:25	4
3367265	2	31	21,7	sleep6	0	-21	swapper/6	07:05:14	6
3367606	99	30	28,2	cyclictest	3592228	-21	kworker/u16:4+events_unbound	10:16:36	5
3367602	99	30	28,2	cyclictest	3913479	-21	kworker/u16:0+events_unbound	11:39:40	4
3367602	99	30	28,2	cyclictest	3795707	-21	kworker/u16:1+flush-8:0	12:13:56	4
3367602	99	30	28,2	cyclictest	3795707	-21	kworker/u16:1+flush-8:0	10:47:55	4
3367602	99	30	28,2	cyclictest	3638403	-21	kworker/u16:2+events_unbound	10:31:00	4
3367602	99	30	28,2	cyclictest	3582918	-21	kworker/u16:3+flush-8:0	11:05:40	4
3367602	99	30	27,2	cyclictest	3638403	-21	kworker/u16:2+flush-8:0	10:41:11	4
3367602	99	30	27,2	cyclictest	3582918	-21	kworker/u16:3+flush-8:0	09:51:16	4
3367608	99	29	28,0	cyclictest	0	-21	swapper/7	09:06:25	7
3367602	99	29	27,2	cyclictest	3988460	-21	kworker/u16:2+flush-8:0	12:26:51	4
3367602	99	29	27,2	cyclictest	3913479	-21	kworker/u16:0+flush-8:0	11:20:00	4
3367602	99	29	27,2	cyclictest	3795707	-21	kworker/u16:1+flush-8:0	11:13:11	4
3367602	99	29	27,2	cyclictest	3795707	-21	kworker/u16:1+flush-8:0	10:35:07	4
3367602	99	29	27,2	cyclictest	3795707	-21	kworker/u16:1+events_unbound	11:33:32	4
3367602	99	29	27,2	cyclictest	3614159	-21	kworker/u16:1+events_unbound	09:20:04	4
3367602	99	29	27,2	cyclictest	3582918	-21	kworker/u16:3+events_unbound	11:53:32	4
3367602	99	29	27,2	cyclictest	3582918	-21	kworker/u16:3+events_unbound	11:53:32	4
3367602	99	29	27,2	cyclictest	3582918	-21	kworker/u16:3+events_unbound	09:27:41	4
3367602	99	29	26,2	cyclictest	3988460	-21	kworker/u16:2+events_unbound	12:06:20	4
3367608	99	28	27,0	cyclictest	0	-21	swapper/7	10:29:07	7
3367602	99	28	26,2	cyclictest	3928241	-21	kworker/u16:2+events_unbound	11:30:19	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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