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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 Wed Aug 19, 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
779524	2	104	0,1	sleep7	779523	-21	ssh	09:51:02	7
6324	89	82	0,75	rtkit-daemon	0	-21	swapper/6	07:07:39	6
1035149	2	71	0,1	sleep7	1035150	-21	latency	11:33:05	7
506798	2	65	0,0	sleep6	86	-21	ksoftirqd/6	07:42:56	6
432632	2	60	50,7	sleep5	0	-21	swapper/5	07:06:10	5
432655	2	52	17,30	sleep7	0	-21	swapper/7	07:06:28	7
433022	99	49	46,3	cyclictest	1075697	-21	kworker/u16:3+flush-8:0	11:57:38	4
433039	99	45	44,0	cyclictest	0	-21	swapper/7	08:23:04	7
433022	99	44	43,1	cyclictest	669886	-21	kworker/u16:3+events_unbound	10:53:20	4
432631	2	44	34,7	sleep4	0	-21	swapper/4	07:06:09	4
433022	99	42	38,3	cyclictest	582205	-21	kworker/u16:0+flush-8:0	09:22:56	4
433022	99	39	35,3	cyclictest	987085	-21	kworker/u16:3+flush-8:0	11:27:38	4
433039	99	38	0,36	cyclictest	928000	-21	latency_hist	10:52:38	7
433034	99	37	35,2	cyclictest	582205	-21	kworker/u16:0+events_unbound	08:43:11	6
433039	99	36	0,34	cyclictest	660130	-21	latency_hist	09:02:38	7
433039	99	35	30,4	cyclictest	1124366	-21	latency_hist	12:12:38	7
433034	99	34	32,2	cyclictest	592033	-21	kworker/u16:1+events_unbound	08:28:06	6
433034	99	34	31,2	cyclictest	582205	-21	kworker/u16:0+flush-8:0	08:32:53	6
433039	99	33	30,2	cyclictest	867884	-21	iostat	10:27:54	7
433039	99	33	30,2	cyclictest	867884	-21	iostat	10:27:54	7
433034	99	33	31,2	cyclictest	841291	-21	kworker/u16:2+events_unbound	10:28:14	6
433034	99	33	31,2	cyclictest	841291	-21	kworker/u16:2+events_unbound	10:28:14	6
433034	99	32	30,2	cyclictest	1062997	-21	kworker/u16:0+events_unbound	12:33:06	6
433034	99	31	29,2	cyclictest	669886	-21	kworker/u16:3+events_unbound	10:24:23	6
433022	99	31	29,2	cyclictest	912496	-21	kworker/u16:2+flush-8:0	10:43:08	4
697649	2	30	0,1	chrt	0	-21	swapper/5	09:17:58	5
433034	99	30	28,2	cyclictest	912496	-21	kworker/u16:2+events_unbound	11:24:40	6
433034	99	30	28,2	cyclictest	582205	-21	kworker/u16:0+events_unbound	08:53:07	6
433034	99	30	28,2	cyclictest	514457	-21	kworker/u16:3+events_unbound	07:48:04	6
433026	99	30	26,3	cyclictest	817356	-21	kworker/u16:4+events_unbound	10:16:30	5
433022	99	30	27,2	cyclictest	841291	-21	kworker/u16:2+flush-8:0	10:32:44	4
433039	99	29	28,0	cyclictest	0	-21	swapper/7	08:08:02	7
433034	99	29	27,2	cyclictest	669886	-21	kworker/u16:3+events_unbound	10:00:58	6
433034	99	29	27,2	cyclictest	582205	-21	kworker/u16:0+events_unbound	09:20:42	6
433034	99	29	27,2	cyclictest	1031195	-21	kworker/u16:1+flush-8:0	11:58:14	6
433034	99	29	26,2	cyclictest	669886	-21	kworker/u16:3+events_unbound	09:27:39	6
433039	99	28	27,0	cyclictest	0	-21	swapper/7	10:21:02	7
433034	99	28	26,2	cyclictest	912496	-21	kworker/u16:2+flush-8:0	11:37:57	6
433034	99	28	26,2	cyclictest	465807	-21	kworker/u16:0+flush-8:0	08:00:32	6
433034	99	28	26,2	cyclictest	3666505	-21	kworker/u16:4+events_unbound	07:26:54	6
433034	99	28	26,2	cyclictest	1062997	-21	kworker/u16:0+events_unbound	11:51:50	6
433034	99	28	26,2	cyclictest	1062997	-21	kworker/u16:0+events_unbound	11:51:50	6
433026	99	28	23,5	cyclictest	1062997	-21	kworker/u16:0+flush-8:0	12:27:37	5
433022	99	28	26,2	cyclictest	669886	-21	kworker/u16:3+flush-8:0	09:28:04	4
1024469	2	28	0,1	chrt	1024467	-21	ssh	11:29:28	7
989410	2	27	0,1	chrt	989409	-21	ssh	11:17:34	7
433039	99	27	26,0	cyclictest	0	-21	swapper/7	12:28:54	7
433039	99	27	26,0	cyclictest	0	-21	swapper/7	12:28:54	7
433039	99	27	26,0	cyclictest	0	-21	swapper/7	11:58:11	7
433039	99	27	26,0	cyclictest	0	-21	swapper/7	08:44:29	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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