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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 May 05, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3598924	2	75	0,1	sleep7	3598925	-21	ssh	00:21:39	7
2891858	2	47	37,7	sleep5	0	-21	swapper/5	19:06:54	5
2892270	99	44	42,2	cyclictest	3307003	-21	kworker/u16:0+flush-8:0	23:08:40	4
2892270	99	42	40,2	cyclictest	3107795	-21	kworker/u16:4+flush-8:0	21:29:12	4
2892270	99	40	38,2	cyclictest	3430368	-21	kworker/u16:1+events_unbound	23:33:39	4
2891722	2	39	5,29	sleep7	0	-21	swapper/7	19:05:03	7
2892277	99	36	0,34	cyclictest	3236109	-21	latency_hist	21:53:39	7
2892270	99	35	33,2	cyclictest	3369698	-21	kworker/u16:2+events_unbound	22:59:02	4
2892277	99	34	29,4	cyclictest	635	-21	systemd-journal	22:13:34	7
2892277	99	34	0,32	cyclictest	635	-21	systemd-journal	23:03:34	7
2892277	99	34	0,32	cyclictest	3624245	-21	updatedb	00:33:35	7
2892270	99	34	32,2	cyclictest	3107795	-21	kworker/u16:4+events_unbound	21:38:19	4
2892270	99	33	31,2	cyclictest	3502538	-21	kworker/u16:0+flush-8:0	00:09:08	4
2892270	99	33	31,2	cyclictest	3502538	-21	kworker/u16:0+flush-8:0	00:09:08	4
3322405	2	32	0,1	chrt	0	-21	swapper/6	22:28:54	6
2892270	99	32	30,2	cyclictest	3334973	-21	kworker/u16:4+events_unbound	23:56:52	4
2892277	99	31	30,0	cyclictest	0	-21	swapper/7	21:29:05	7
2892277	99	31	29,1	cyclictest	0	-21	swapper/7	21:34:03	7
2892270	99	31	28,2	cyclictest	3430368	-21	kworker/u16:1+events_unbound	23:41:50	4
2891757	2	31	20,8	sleep4	0	-21	swapper/4	19:05:32	4
2892277	99	30	25,4	cyclictest	3138997	-21	latency_hist	21:13:39	7
2892270	99	30	28,2	cyclictest	3573373	-21	kworker/u16:2+events_unbound	00:32:11	4
2892270	99	30	28,2	cyclictest	3430368	-21	kworker/u16:1+events_unbound	23:35:11	4
2892270	99	30	28,2	cyclictest	3334973	-21	kworker/u16:4+events_unbound	23:25:03	4
2892270	99	29	27,2	cyclictest	3246683	-21	kworker/u16:0+events_unbound	22:04:50	4
2892270	99	29	27,2	cyclictest	3107795	-21	kworker/u16:4+events_unbound	21:47:12	4
2892270	99	29	26,2	cyclictest	3430368	-21	kworker/u16:1+events_unbound	00:03:47	4
2892270	99	28	26,2	cyclictest	3430368	-21	kworker/u16:1+flush-8:0	23:46:55	4
2892270	99	28	26,2	cyclictest	3307003	-21	kworker/u16:0+events_unbound	22:29:35	4
2892270	99	27	25,2	cyclictest	3430368	-21	kworker/u16:1+flush-8:0	23:16:43	4
2892270	99	27	25,2	cyclictest	3077953	-21	kworker/u16:1+events_unbound	22:22:23	4
2892270	99	27	25,2	cyclictest	3077953	-21	kworker/u16:1+events_unbound	21:59:12	4
2892270	99	27	25,2	cyclictest	3077953	-21	kworker/u16:1+events_unbound	21:59:12	4
2892270	99	27	24,2	cyclictest	3334973	-21	kworker/u16:4+events_unbound	22:43:55	4
2892270	99	27	24,2	cyclictest	3334973	-21	kworker/u16:4+events_unbound	22:43:55	4
2892270	99	26	24,2	cyclictest	3107795	-21	kworker/u16:4+events_unbound	21:16:59	4
2892270	99	26	24,2	cyclictest	3077953	-21	kworker/u16:1+events_unbound	22:15:19	4
2892270	99	26	24,2	cyclictest	2188985	-21	kworker/u16:3+flush-8:0	19:24:02	4
2891683	2	26	16,7	sleep6	0	-21	swapper/6	19:04:30	6
2892277	99	25	21,3	cyclictest	635	-21	systemd-journal	21:48:35	7
2892270	99	25	23,2	cyclictest	3600162	-21	kworker/u16:4+events_unbound	00:28:12	4
2892270	99	25	23,2	cyclictest	3334973	-21	kworker/u16:4+events_unbound	22:49:49	4
2892270	99	25	23,2	cyclictest	3223993	-21	kworker/u16:2+events_unbound	21:53:39	4
2892277	99	24	19,4	cyclictest	3442453	-21	latency_hist	23:18:39	7
2892270	99	24	22,2	cyclictest	3502538	-21	kworker/u16:0+events_unbound	23:53:06	4
2892270	99	24	22,2	cyclictest	3430368	-21	kworker/u16:1+events_unbound	23:21:44	4
2892270	99	24	22,2	cyclictest	3077953	-21	kworker/u16:1+flush-8:0	22:40:32	4
2892270	99	24	22,2	cyclictest	3021180	-21	kworker/u16:0+events_unbound	21:10:40	4
2892270	99	23	21,2	cyclictest	3573373	-21	kworker/u16:2+events_unbound	00:20:14	4
2892270	99	23	21,2	cyclictest	3502538	-21	kworker/u16:0+flush-8:0	00:01:10	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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