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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 100 highest latencies:

System rack0slot2.osadl.org (updated Wed Mar 04, 2026 12:43:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
487798	2	58	47,8	sleep5	0	-21	swapper/5	07:02:03	5
487779	2	58	48,7	sleep4	0	-21	swapper/4	07:01:46	4
488277	99	48	42,5	cyclictest	635898	-21	latency_hist	08:19:30	7
488277	99	48	42,5	cyclictest	635898	-21	latency_hist	08:19:30	7
487716	2	43	33,7	sleep6	0	-21	swapper/6	07:00:51	6
488277	99	41	38,2	cyclictest	520823	-21	date	07:19:30	7
488264	99	40	38,2	cyclictest	1073029	-21	kworker/u16:1+events_unbound	11:29:56	5
488264	99	40	38,2	cyclictest	1073029	-21	kworker/u16:1+events_unbound	11:29:56	5
488259	99	40	38,2	cyclictest	635938	-21	kworker/u16:3+events_unbound	08:26:33	4
478713	2	39	3,30	sleep7	0	-21	swapper/7	06:59:32	7
488277	99	37	31,5	cyclictest	607131	-21	latency_hist	08:04:30	7
488269	99	37	35,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	11:14:43	6
488259	99	36	33,2	cyclictest	713430	-21	kworker/u16:0+flush-8:0	12:04:30	4
488259	99	35	33,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	12:09:56	4
488259	99	35	33,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	12:09:56	4
488277	99	34	29,4	cyclictest	879684	-21	latency_hist	10:09:30	7
488259	99	34	31,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	11:39:44	4
488259	99	34	30,3	cyclictest	713430	-21	kworker/u16:0+events_unbound	09:09:55	4
488269	99	33	31,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	10:49:44	6
488277	99	32	30,1	cyclictest	0	-21	swapper/7	09:04:45	7
488269	99	31	29,2	cyclictest	520754	-21	kworker/u16:0+flush-8:0	07:34:45	6
488264	99	31	29,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	10:39:43	5
488259	99	31	29,2	cyclictest	831383	-21	kworker/u16:3+events_unbound	09:49:45	4
488277	99	30	29,0	cyclictest	0	-21	swapper/7	10:44:35	7
488269	99	30	28,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	09:44:48	6
488277	99	29	23,5	cyclictest	1097176	-21	latency_hist	11:39:30	7
488269	99	29	27,2	cyclictest	731630	-21	kworker/u16:3+events_unbound	09:34:57	6
488269	99	29	27,2	cyclictest	731630	-21	kworker/u16:3+events_unbound	09:34:57	6
488269	99	29	27,2	cyclictest	635938	-21	kworker/u16:3+flush-8:0	08:44:47	6
488269	99	29	27,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	11:49:44	6
488259	99	29	27,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	11:34:53	4
1083127	2	29	0,1	chrt	1083128	-21	sh	11:30:49	7
1083127	2	29	0,1	chrt	1083128	-21	sh	11:30:49	7
488269	99	28	26,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	11:54:55	6
488277	99	27	27,0	cyclictest	0	-21	swapper/7	10:14:51	7
488277	99	27	26,0	cyclictest	0	-21	swapper/7	07:54:44	7
488269	99	27	25,2	cyclictest	1181140	-21	kworker/u16:5+events_unbound	12:24:47	6
488269	99	26	23,2	cyclictest	568911	-21	kworker/u16:2+events_unbound	08:14:48	6
488269	99	26	23,2	cyclictest	568911	-21	kworker/u16:2+events_unbound	08:14:48	6
488259	99	26	24,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	11:04:55	4
488277	99	25	21,3	cyclictest	6763	-21	passimd	08:26:33	7
488269	99	25	23,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	08:34:46	6
488277	99	24	19,4	cyclictest	928108	-21	latency_hist	10:29:30	7
488269	99	24	22,2	cyclictest	713430	-21	kworker/u16:0+flush-8:0	12:04:46	6
488269	99	24	22,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	09:40:08	6
488269	99	24	22,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	09:40:08	6
488269	99	24	22,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	11:14:30	6
488269	99	24	22,2	cyclictest	478432	-21	kworker/u16:4+flush-8:0	07:04:49	6
488269	99	24	21,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	10:09:50	6
488259	99	24	22,2	cyclictest	1109290	-21	kworker/u16:2+events_unbound	12:24:28	4
488269	99	23	21,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	09:29:53	6
488269	99	23	21,2	cyclictest	3700282	-21	kworker/u16:1+flush-8:0	07:59:48	6
488269	99	23	21,2	cyclictest	3700282	-21	kworker/u16:1+events_unbound	07:14:44	6
488269	99	23	21,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	12:09:54	6
488269	99	23	21,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	12:09:54	6
488269	99	23	20,2	cyclictest	831383	-21	kworker/u16:3+events_unbound	09:49:47	6
488277	99	22	18,3	cyclictest	650	-21	systemd-journal	12:14:24	7
488277	99	22	18,3	cyclictest	650	-21	systemd-journal	12:14:24	7
488269	99	22	20,2	cyclictest	713430	-21	kworker/u16:0+flush-8:0	09:24:51	6
488269	99	22	20,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	09:19:54	6
488269	99	22	20,2	cyclictest	520754	-21	kworker/u16:0+events_unbound	07:20:07	6
488269	99	22	20,2	cyclictest	3700282	-21	kworker/u16:1+events_unbound	07:49:51	6
488264	99	22	20,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	09:44:44	5
488259	99	22	20,2	cyclictest	713430	-21	kworker/u16:0+events_unbound	09:54:59	4
488259	99	22	20,2	cyclictest	3700282	-21	kworker/u16:1+events_unbound	08:54:52	4
488259	99	22	19,3	cyclictest	713430	-21	kworker/u16:0+flush-8:0	10:54:58	4
488259	99	22	19,2	cyclictest	568911	-21	kworker/u16:2+flush-8:0	07:59:57	4
488277	99	21	20,0	cyclictest	0	-21	swapper/7	08:39:55	7
488269	99	21	19,2	cyclictest	988505	-21	kworker/u16:1+events_unbound	11:19:54	6
488269	99	21	19,2	cyclictest	713430	-21	kworker/u16:0+flush-8:0	10:39:45	6
488269	99	21	19,2	cyclictest	635938	-21	kworker/u16:3+events_unbound	08:55:27	6
488269	99	21	19,2	cyclictest	635938	-21	kworker/u16:3+events_unbound	08:29:41	6
488269	99	21	19,2	cyclictest	3700282	-21	kworker/u16:1+flush-8:0	07:24:54	6
488269	99	21	19,2	cyclictest	1109290	-21	kworker/u16:2+flush-8:0	11:44:53	6
488264	99	21	19,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	10:19:56	5
488277	99	20	17,2	cyclictest	124	-21	kswapd0	11:09:54	7
488277	99	20	14,5	cyclictest	626309	-21	latency_hist	08:14:30	7
488277	99	20	0,19	cyclictest	1203198	-21	ssh	12:19:54	7
488269	99	20	18,2	cyclictest	3700282	-21	kworker/u16:1+events_unbound	08:09:43	6
488259	99	20	17,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	11:09:53	4
488259	99	20	17,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	10:34:47	4
488269	99	19	17,2	cyclictest	831383	-21	kworker/u16:3+events_unbound	10:14:42	6
488269	99	19	17,2	cyclictest	520754	-21	kworker/u16:0+flush-8:0	07:39:40	6
488269	99	19	17,2	cyclictest	478431	-21	kworker/u16:3+events_unbound	07:09:32	6
488269	99	19	17,2	cyclictest	1218813	-21	kworker/u16:0+flush-8:0	12:29:45	6
488264	99	19	17,2	cyclictest	831383	-21	kworker/u16:3+events_unbound	10:14:55	5
488259	99	19	17,2	cyclictest	1058762	-21	kworker/u16:3+events_unbound	11:54:51	4
488277	99	18	0,17	cyclictest	915962	-21	latency_hist	10:24:30	7
488269	99	18	16,2	cyclictest	713430	-21	kworker/u16:0+flush-8:0	11:00:37	6
488269	99	18	16,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	10:04:57	6
488264	99	18	16,2	cyclictest	831383	-21	kworker/u16:3+flush-8:0	10:29:35	5
488259	99	18	15,3	cyclictest	478432	-21	kworker/u16:4+flush-8:0	07:44:47	4
488277	99	17	8,8	cyclictest	0	-21	swapper/7	10:34:50	7
488277	99	17	13,3	cyclictest	1267	-21	snmpd	11:01:23	7
488269	99	17	15,2	cyclictest	831383	-21	kworker/u16:3+flush-8:0	09:55:28	6
488269	99	17	15,2	cyclictest	831383	-21	kworker/u16:3+events_unbound	10:20:22	6
488269	99	17	15,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	10:29:52	6
488269	99	17	14,2	cyclictest	654932	-21	kworker/u16:2+events_unbound	09:14:32	6
488264	99	17	14,2	cyclictest	1109290	-21	kworker/u16:2+flush-8:0	12:24:46	5
488259	99	17	15,2	cyclictest	654932	-21	kworker/u16:2+flush-8:0	09:34:54	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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