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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 Dec 11, 2025 00:43:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3134249	99	70	64,5	cyclictest	3632171	-21	latency_hist	07:27:17	7
3134249	99	63	58,4	cyclictest	3501056	-21	latency_hist	06:22:17	7
3133804	2	61	50,7	sleep4	0	-21	swapper/4	03:20:46	4
3134249	99	54	49,4	cyclictest	3682551	-21	latency_hist	07:52:17	7
3133653	2	54	19,30	sleep7	0	-21	swapper/7	03:18:41	7
3134249	99	50	47,2	cyclictest	3792427	-21	ntpq	08:42:42	7
3134236	99	48	45,2	cyclictest	3134463	-21	kworker/u16:3+events_unbound	03:42:44	4
3134243	99	46	44,1	cyclictest	3134463	-21	kworker/u16:3+events_unbound	04:07:33	5
3134236	99	46	43,2	cyclictest	3623314	-21	kworker/u16:0+events_unbound	08:37:32	4
3133736	2	46	36,7	sleep5	0	-21	swapper/5	03:19:51	5
3133844	2	45	35,7	sleep6	0	-21	swapper/6	03:21:20	6
3134249	99	44	39,4	cyclictest	3410304	-21	latency_hist	05:37:17	7
3134236	99	43	41,2	cyclictest	3309248	-21	kworker/u16:1+flush-8:0	05:07:46	4
3134236	99	43	40,3	cyclictest	3208487	-21	kworker/u16:1+flush-8:0	04:12:49	4
3664380	2	42	0,1	sleep7	3664378	-21	cut	07:42:34	7
3134245	99	42	39,2	cyclictest	3732378	-21	kworker/u16:5+flush-8:0	08:37:17	6
3134236	99	42	39,2	cyclictest	3561740	-21	kworker/u16:1+flush-8:0	07:12:43	4
3134249	99	40	39,0	cyclictest	0	-21	swapper/7	04:22:33	7
3134249	99	40	39,0	cyclictest	0	-21	swapper/7	04:20:40	7
3134236	99	40	37,2	cyclictest	3460463	-21	kworker/u16:4+flush-8:0	06:42:33	4
3134236	99	39	37,2	cyclictest	3623314	-21	kworker/u16:0+flush-8:0	07:42:41	4
3134236	99	39	37,2	cyclictest	3623314	-21	kworker/u16:0+events_unbound	07:52:45	4
3134236	99	39	37,2	cyclictest	3349474	-21	kworker/u16:0+flush-8:0	05:27:49	4
3134249	99	38	33,3	cyclictest	3389109	-21	ntpq	05:22:43	7
3134249	99	38	33,3	cyclictest	3389109	-21	ntpq	05:22:43	7
3134249	99	38	32,5	cyclictest	589235	-21	systemd-journal	05:02:18	7
3134249	99	38	32,5	cyclictest	3601955	-21	latency_hist	07:12:17	7
3134249	99	37	35,1	cyclictest	0	-21	swapper/7	04:02:44	7
3134236	99	37	35,2	cyclictest	3732378	-21	kworker/u16:5+events_unbound	08:36:14	4
3134236	99	37	35,2	cyclictest	3379773	-21	kworker/u16:1+events_unbound	05:35:42	4
3134249	99	36	33,2	cyclictest	3379051	-21	ntp_offset	05:17:43	7
3134249	99	36	33,2	cyclictest	3379051	-21	ntp_offset	05:17:43	7
3134249	99	36	30,5	cyclictest	3309441	-21	latency_hist	04:47:18	7
3134236	99	35	33,2	cyclictest	3440278	-21	kworker/u16:3+flush-8:0	06:02:34	4
3134236	99	35	33,2	cyclictest	3349474	-21	kworker/u16:0+events_unbound	05:45:45	4
3134236	99	35	33,2	cyclictest	3208716	-21	kworker/u16:2+flush-8:0	04:02:45	4
3134236	99	35	33,2	cyclictest	3134463	-21	kworker/u16:3+flush-8:0	04:00:52	4
3134236	99	35	33,2	cyclictest	3134463	-21	kworker/u16:3+events_unbound	03:51:28	4
3134249	99	34	33,0	cyclictest	0	-21	swapper/7	05:14:43	7
3134249	99	34	29,4	cyclictest	3531310	-21	latency_hist	06:37:18	7
3134236	99	34	32,2	cyclictest	3481284	-21	kworker/u16:1+events_unbound	06:35:51	4
3134236	99	34	32,2	cyclictest	3349474	-21	kworker/u16:0+events_unbound	06:08:28	4
3134236	99	34	32,2	cyclictest	3349474	-21	kworker/u16:0+events_unbound	06:08:28	4
3134249	99	33	32,0	cyclictest	0	-21	swapper/7	03:53:25	7
3134249	99	33	32,0	cyclictest	0	-21	swapper/7	03:53:25	7
3134249	99	33	28,4	cyclictest	3480892	-21	latency_hist	06:12:17	7
3134249	99	33	28,4	cyclictest	3480892	-21	latency_hist	06:12:17	7
3134236	99	33	31,2	cyclictest	3623314	-21	kworker/u16:0+events_unbound	07:27:21	4
3134236	99	33	31,2	cyclictest	3541231	-21	kworker/u16:0+events_unbound	06:49:44	4
3134236	99	33	31,2	cyclictest	3168170	-21	kworker/u16:1+events_unbound	03:40:53	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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