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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 Mon Jun 08, 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
1359084	2	106	0,1	sleep7	1359086	-21	kthreadcore	22:51:43	7
1379278	2	95	0,1	sleep4	0	-21	swapper/4	22:59:02	4
870568	99	63	60,2	cyclictest	1104687	-21	kworker/u16:0+events_unbound	21:06:38	4
870568	99	62	60,2	cyclictest	1225785	-21	kworker/u16:2+events_unbound	23:36:57	4
870568	99	61	59,2	cyclictest	1260615	-21	kworker/u16:4+events_unbound	22:51:58	4
870575	99	60	57,2	cyclictest	1047943	-21	smartctl	20:36:40	7
870568	99	58	56,1	cyclictest	1094534	-21	kworker/u16:1+events_unbound	21:16:40	4
870573	99	57	55,2	cyclictest	860459	-21	kworker/u16:3+flush-8:0	19:36:53	6
870573	99	57	55,2	cyclictest	1104687	-21	kworker/u16:0+events_unbound	21:16:54	6
870568	99	57	55,2	cyclictest	979705	-21	kworker/u16:3+flush-8:0	20:36:54	4
870568	99	56	54,2	cyclictest	1438293	-21	kworker/u16:0+events_unbound	00:01:54	4
870573	99	55	53,2	cyclictest	1260615	-21	kworker/u16:4+events_unbound	23:11:50	6
870568	99	54	52,2	cyclictest	903339	-21	kworker/u16:2+events_unbound	19:31:38	4
870568	99	54	52,2	cyclictest	1210496	-21	kworker/u16:3+events_unbound	21:51:57	4
870277	2	54	43,8	sleep5	0	-21	swapper/5	19:06:17	5
870573	99	53	51,2	cyclictest	1225785	-21	kworker/u16:2+events_unbound	22:41:58	6
870568	99	53	51,2	cyclictest	1513129	-21	kworker/u16:3+events_unbound	00:26:57	4
870573	99	52	49,2	cyclictest	960859	-21	kworker/u16:0+events_unbound	20:16:42	6
870143	2	52	41,8	sleep4	0	-21	swapper/4	19:04:23	4
870568	99	51	49,2	cyclictest	1560790	-21	kworker/u16:1+events_unbound	00:31:54	4
870573	99	50	48,2	cyclictest	960859	-21	kworker/u16:0+flush-8:0	20:56:53	6
870568	99	50	48,2	cyclictest	1260615	-21	kworker/u16:4+events_unbound	23:11:54	4
870568	99	50	48,2	cyclictest	1225785	-21	kworker/u16:2+events_unbound	00:16:53	4
870568	99	50	47,2	cyclictest	903339	-21	kworker/u16:2+events_unbound	19:51:39	4
870575	99	49	46,2	cyclictest	921417	-21	sed	19:26:53	7
870573	99	49	47,2	cyclictest	1438293	-21	kworker/u16:0+events_unbound	23:57:01	6
870575	99	48	44,3	cyclictest	1130169	-21	kthreadcore	21:16:42	7
870573	99	48	45,2	cyclictest	960859	-21	kworker/u16:0+flush-8:0	20:31:40	6
870573	99	48	45,2	cyclictest	1513129	-21	kworker/u16:3+events_unbound	00:01:41	6
870575	99	47	44,2	cyclictest	901989	-21	ntpq	19:16:50	7
870575	99	47	44,2	cyclictest	901989	-21	ntpq	19:16:50	7
870575	99	47	44,2	cyclictest	1341600	-21	ntpq	22:41:53	7
870573	99	47	46,1	cyclictest	1225785	-21	kworker/u16:2+events_unbound	23:26:55	6
870573	99	47	46,1	cyclictest	1225785	-21	kworker/u16:2+events_unbound	23:26:55	6
870573	99	47	45,2	cyclictest	960859	-21	kworker/u16:0+events_unbound	20:36:50	6
870568	99	47	45,2	cyclictest	1260615	-21	kworker/u16:4+events_unbound	23:06:46	4
870568	99	47	45,2	cyclictest	1225785	-21	kworker/u16:2+flush-8:0	22:16:49	4
870568	99	47	45,2	cyclictest	1104687	-21	kworker/u16:0+events_unbound	21:31:55	4
870568	99	47	44,2	cyclictest	1560790	-21	kworker/u16:1+events_unbound	00:21:25	4
870568	99	47	44,2	cyclictest	1248638	-21	kworker/u16:1+flush-8:0	22:11:57	4
870575	99	46	45,0	cyclictest	0	-21	swapper/7	20:46:54	7
870573	99	46	44,2	cyclictest	1225785	-21	kworker/u16:2+events_unbound	00:26:39	6
870573	99	46	43,2	cyclictest	1248638	-21	kworker/u16:1+events_unbound	22:11:55	6
870568	99	46	44,2	cyclictest	1225785	-21	kworker/u16:2+events_unbound	23:16:59	4
870568	99	45	43,2	cyclictest	979705	-21	kworker/u16:3+events_unbound	20:41:55	4
870568	99	45	43,2	cyclictest	960859	-21	kworker/u16:0+events_unbound	20:46:46	4
870568	99	45	43,2	cyclictest	1260615	-21	kworker/u16:4+events_unbound	23:51:56	4
870575	99	44	42,1	cyclictest	1177621	-21	ssh	21:36:40	7
870575	99	44	42,1	cyclictest	1104413	-21	diskmemload	22:16:39	7
870568	99	44	42,2	cyclictest	1438293	-21	kworker/u16:0+events_unbound	23:31:41	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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