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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 Tue Jun 17, 2025 00:43:37)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1781525	2	57	47,7	sleep5	0	-21	swapper/5	03:34:06	5
1781495	2	52	42,7	sleep6	0	-21	swapper/6	03:33:43	6
1781265	2	50	38,8	sleep4	0	-21	swapper/4	03:30:28	4
1781259	2	42	9,29	sleep7	0	-21	swapper/7	03:30:23	7
1781829	99	33	30,2	cyclictest	760621	-21	kworker/u16:4+flush-8:0	04:49:07	6
1781829	99	33	30,2	cyclictest	1980315	-21	kworker/u16:3+flush-8:0	06:09:30	6
1781829	99	33	30,2	cyclictest	1826384	-21	kworker/u16:3+flush-8:0	04:19:03	6
1781829	99	32	29,2	cyclictest	2329072	-21	kworker/u16:0+events_unbound	08:24:26	6
1781829	99	31	29,2	cyclictest	2236889	-21	kworker/u16:3+flush-8:0	07:19:02	6
1781829	99	30	28,2	cyclictest	2236889	-21	kworker/u16:3+flush-8:0	07:49:02	6
1781829	99	29	25,3	cyclictest	2329072	-21	kworker/u16:0+events_unbound	08:09:31	6
1781829	99	28	26,2	cyclictest	1826384	-21	kworker/u16:3+events_unbound	04:14:03	6
1781829	99	27	25,2	cyclictest	760621	-21	kworker/u16:4+events_unbound	04:49:30	6
1781829	99	27	25,2	cyclictest	2103361	-21	kworker/u16:4+flush-8:0	07:04:02	6
1781829	99	27	25,2	cyclictest	2030883	-21	kworker/u16:0+events_unbound	05:44:09	6
1781829	99	27	24,2	cyclictest	1980315	-21	kworker/u16:3+flush-8:0	05:44:02	6
1781831	99	26	26,0	cyclictest	0	-21	swapper/7	04:34:31	7
1781829	99	26	23,2	cyclictest	1970034	-21	kworker/u16:2+flush-8:0	05:04:09	6
1781824	99	26	24,2	cyclictest	2329072	-21	kworker/u16:0+events_unbound	08:34:26	5
1781824	99	26	24,2	cyclictest	2072538	-21	kworker/u16:1+flush-8:0	06:14:07	5
1781823	99	26	24,2	cyclictest	2247458	-21	kworker/u16:1+flush-8:0	07:54:37	4
1781823	99	26	24,2	cyclictest	2247458	-21	kworker/u16:1+flush-8:0	07:54:37	4
1781829	99	25	22,2	cyclictest	1980315	-21	kworker/u16:3+events_unbound	05:09:30	6
1781829	99	24	22,2	cyclictest	2030883	-21	kworker/u16:0+flush-8:0	06:24:21	6
1781829	99	24	21,2	cyclictest	2257182	-21	kworker/u16:2+events_unbound	07:24:30	6
1781829	99	24	21,2	cyclictest	1751183	-21	kworker/u16:0+flush-8:0	04:34:08	6
1781829	99	24	20,3	cyclictest	1037673	-21	kworker/u16:5+events_unbound	03:49:28	6
1781823	99	24	21,2	cyclictest	2236889	-21	kworker/u16:3+events_unbound	07:44:26	4
1781829	99	23	21,2	cyclictest	2410321	-21	kworker/u16:1+flush-8:0	08:59:02	6
1781829	99	23	21,2	cyclictest	1994658	-21	kworker/u16:5+flush-8:0	05:34:02	6
1781829	99	23	20,2	cyclictest	2267511	-21	kworker/u16:4+flush-8:0	07:49:26	6
1781831	99	22	0,20	cyclictest	1867845	-21	latency_hist	04:14:08	7
1781829	99	22	20,2	cyclictest	2236889	-21	kworker/u16:3+events_unbound	07:19:31	6
1781829	99	22	20,2	cyclictest	2072609	-21	kworker/u16:2+flush-8:0	05:59:07	6
1781829	99	22	19,2	cyclictest	2030883	-21	kworker/u16:0+flush-8:0	05:34:21	6
1781829	99	22	19,2	cyclictest	2030883	-21	kworker/u16:0+flush-8:0	05:34:21	6
1781823	99	22	19,2	cyclictest	2103361	-21	kworker/u16:4+flush-8:0	06:29:26	4
1781831	99	21	21,0	cyclictest	0	-21	swapper/7	05:19:35	7
1781831	99	21	20,0	cyclictest	0	-21	swapper/7	07:17:10	7
1781831	99	21	20,0	cyclictest	0	-21	swapper/7	06:04:09	7
1781831	99	21	0,19	cyclictest	2236986	-21	latency_hist	07:14:07	7
1781831	99	21	0,19	cyclictest	2236986	-21	latency_hist	07:14:07	7
1781829	99	21	19,2	cyclictest	2236889	-21	kworker/u16:3+flush-8:0	08:04:42	6
1781829	99	21	19,2	cyclictest	2103361	-21	kworker/u16:4+events_unbound	06:49:23	6
1781829	99	21	17,3	cyclictest	2103361	-21	kworker/u16:4+events_unbound	06:19:20	6
1781829	99	21	17,3	cyclictest	2103361	-21	kworker/u16:4+events_unbound	06:19:20	6
1781831	99	20	19,0	cyclictest	0	-21	swapper/7	06:39:38	7
1781831	99	20	19,0	cyclictest	0	-21	swapper/7	04:44:26	7
1781829	99	20	18,2	cyclictest	1980315	-21	kworker/u16:3+flush-8:0	05:29:07	6
1781824	99	20	18,2	cyclictest	2370039	-21	kworker/u16:3+events_unbound	08:49:21	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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