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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 Jan 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
2550592	2	58	47,7	sleep4	0	-21	swapper/4	07:04:01	4
2550768	2	53	20,29	sleep7	0	-21	swapper/7	07:06:29	7
2550869	2	46	35,8	sleep5	0	-21	swapper/5	07:07:55	5
2551163	99	45	43,2	cyclictest	2531803	-21	kworker/u16:4+flush-8:0	07:58:00	5
2551163	99	42	40,2	cyclictest	2958656	-21	kworker/u16:2+events_unbound	10:36:30	5
2551163	99	41	39,2	cyclictest	3217289	-21	kworker/u16:1+events_unbound	12:16:23	5
2551163	99	41	39,2	cyclictest	3207043	-21	kworker/u16:0+events_unbound	12:02:37	5
2551163	99	41	39,2	cyclictest	3207043	-21	kworker/u16:0+events_unbound	12:02:37	5
2551163	99	41	39,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	11:17:59	5
2551173	99	40	38,1	cyclictest	2788084	-21	diskmemload	11:34:46	7
2551163	99	40	38,2	cyclictest	3207043	-21	kworker/u16:0+events_unbound	12:31:13	5
2551163	99	40	38,2	cyclictest	3207043	-21	kworker/u16:0+events_unbound	12:11:38	5
2551163	99	40	38,2	cyclictest	3182640	-21	kworker/u16:2+events_unbound	11:57:51	5
2551163	99	40	38,2	cyclictest	2810309	-21	kworker/u16:1+events_unbound	10:22:31	5
2551163	99	40	38,2	cyclictest	2810309	-21	kworker/u16:1+events_unbound	10:06:30	5
2551163	99	40	38,2	cyclictest	2810309	-21	kworker/u16:1+events_unbound	09:32:10	5
2551163	99	40	37,2	cyclictest	2810309	-21	kworker/u16:1+events_unbound	09:25:14	5
2551163	99	39	37,2	cyclictest	3182640	-21	kworker/u16:2+events_unbound	11:50:30	5
2551163	99	39	37,2	cyclictest	3169740	-21	kworker/u16:1+events_unbound	11:46:23	5
2551163	99	39	37,2	cyclictest	2958656	-21	kworker/u16:2+events_unbound	10:17:46	5
2551163	99	39	37,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	11:30:47	5
2551163	99	39	37,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	11:27:18	5
2551163	99	39	37,2	cyclictest	2810309	-21	kworker/u16:1+events_unbound	10:00:30	5
2551163	99	39	37,2	cyclictest	2739908	-21	kworker/u16:2+flush-8:0	09:50:54	5
2551173	99	38	0,36	cyclictest	3096421	-21	taskset	11:12:41	7
2551163	99	38	36,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	10:25:41	5
2551163	99	38	36,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	10:11:07	5
2551163	99	38	36,2	cyclictest	2748294	-21	kworker/u16:3+flush-8:0	09:17:07	5
2551163	99	38	36,2	cyclictest	2748294	-21	kworker/u16:3+flush-8:0	09:17:07	5
2551163	99	38	36,2	cyclictest	2739908	-21	kworker/u16:2+flush-8:0	09:22:34	5
2551163	99	38	36,2	cyclictest	2739908	-21	kworker/u16:2+events_unbound	09:40:59	5
2551163	99	38	35,2	cyclictest	2615069	-21	kworker/u16:2+events_unbound	08:28:02	5
2551163	99	38	35,2	cyclictest	2615069	-21	kworker/u16:2+events_unbound	08:28:02	5
2551168	99	37	35,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	10:15:45	6
2551163	99	37	35,2	cyclictest	3207043	-21	kworker/u16:0+events_unbound	12:04:14	5
2551163	99	37	35,2	cyclictest	3182640	-21	kworker/u16:2+events_unbound	12:24:05	5
2551163	99	37	35,2	cyclictest	3057203	-21	kworker/u16:3+events_unbound	11:07:14	5
2551163	99	37	35,2	cyclictest	2936485	-21	kworker/u16:0+flush-8:0	10:42:26	5
2551163	99	37	35,2	cyclictest	2936485	-21	kworker/u16:0+flush-8:0	10:42:26	5
2551163	99	37	35,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	10:30:01	5
2551163	99	37	35,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	11:37:38	5
2551163	99	37	35,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	09:44:07	5
2551173	99	36	35,0	cyclictest	0	-21	swapper/7	11:58:58	7
2551173	99	36	35,0	cyclictest	0	-21	swapper/7	11:58:58	7
2551163	99	36	34,2	cyclictest	3217289	-21	kworker/u16:1+events_unbound	12:35:01	5
2551163	99	36	34,2	cyclictest	2936485	-21	kworker/u16:0+events_unbound	10:47:05	5
2551163	99	36	34,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	11:20:38	5
2551163	99	36	34,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	11:20:38	5
2551163	99	36	34,2	cyclictest	2876166	-21	kworker/u16:4+events_unbound	10:57:14	5
2551173	99	35	34,0	cyclictest	0	-21	swapper/7	12:30:14	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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