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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 Tue Jun 02, 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
654823	2	100	0,1	sleep7	654824	-21	sh	11:04:28	7
132812	2	56	46,7	sleep4	0	-21	swapper/4	07:05:38	4
133171	99	46	43,2	cyclictest	680072	-21	kworker/u16:1+flush-8:0	11:17:01	6
133173	99	44	39,4	cyclictest	463699	-21	latency_hist	09:46:46	7
133171	99	42	40,2	cyclictest	692193	-21	kworker/u16:3+flush-8:0	11:32:01	6
132663	2	41	31,7	sleep5	0	-21	swapper/5	07:03:30	5
132656	2	40	5,30	sleep7	0	-21	swapper/7	07:03:24	7
133173	99	39	33,5	cyclictest	523762	-21	latency_hist	10:11:46	7
133171	99	39	37,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:32:39	6
133171	99	39	37,2	cyclictest	366659	-21	kworker/u16:3+events_unbound	09:22:06	6
133171	99	38	36,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:49:31	6
133171	99	38	36,2	cyclictest	175266	-21	kworker/u16:1+events_unbound	09:19:08	6
133171	99	37	35,2	cyclictest	388574	-21	kworker/u16:0+events_unbound	09:14:36	6
133173	99	36	0,34	cyclictest	644052	-21	latency_hist	11:01:46	7
133171	99	36	34,2	cyclictest	788416	-21	kworker/u16:4+events_unbound	12:34:16	6
133171	99	36	34,2	cyclictest	716305	-21	kworker/u16:4+flush-8:0	11:41:35	6
133171	99	36	34,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:00:20	6
133171	99	35	33,2	cyclictest	656020	-21	kworker/u16:0+events_unbound	11:08:01	6
133171	99	35	33,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	10:25:39	6
133171	99	35	33,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:43:04	6
133171	99	35	33,2	cyclictest	175266	-21	kworker/u16:1+flush-8:0	08:16:47	6
133171	99	34	32,2	cyclictest	680072	-21	kworker/u16:1+events_unbound	11:53:35	6
133171	99	34	32,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	11:06:39	6
133171	99	34	32,2	cyclictest	474488	-21	kworker/u16:3+flush-8:0	10:04:59	6
133171	99	34	32,2	cyclictest	223378	-21	kworker/u16:0+flush-8:0	07:56:47	6
133171	99	33	31,2	cyclictest	788416	-21	kworker/u16:4+events_unbound	12:25:03	6
133171	99	33	31,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	11:29:47	6
133171	99	33	31,2	cyclictest	415534	-21	kworker/u16:2+flush-8:0	09:44:51	6
133171	99	33	31,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	11:26:23	6
133173	99	32	29,2	cyclictest	428886	-21	irqcore	09:32:02	7
133173	99	32	29,2	cyclictest	428886	-21	irqcore	09:32:02	7
133171	99	32	30,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	11:43:24	6
133171	99	32	30,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:31:07	6
133171	99	32	30,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:11:05	6
133171	99	32	30,2	cyclictest	175266	-21	kworker/u16:1+flush-8:0	09:07:23	6
133167	99	32	30,2	cyclictest	415534	-21	kworker/u16:2+flush-8:0	09:56:46	5
133167	99	32	29,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	10:57:01	5
132673	2	32	21,8	sleep6	0	-21	swapper/6	07:03:39	6
133171	99	31	29,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:08:24	6
133171	99	31	29,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:06:23	6
133165	99	31	29,2	cyclictest	451696	-21	kworker/u16:0+events_unbound	09:56:39	4
133165	99	31	29,2	cyclictest	223378	-21	kworker/u16:0+flush-8:0	08:38:43	4
133171	99	30	28,2	cyclictest	788416	-21	kworker/u16:4+events_unbound	12:19:39	6
133171	99	30	28,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:30:14	6
133171	99	30	28,2	cyclictest	474488	-21	kworker/u16:3+flush-8:0	09:52:32	6
133165	99	30	28,2	cyclictest	692193	-21	kworker/u16:3+flush-8:0	12:31:55	4
133173	99	29	27,1	cyclictest	367438	-21	diskmemload	11:54:55	7
133173	99	29	25,3	cyclictest	635	-21	systemd-journal	10:16:40	7
133173	99	29	25,3	cyclictest	635	-21	systemd-journal	10:16:40	7
133171	99	29	27,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	09:28:45	6
133171	99	29	27,2	cyclictest	4060181	-21	kworker/u16:3+flush-8:0	07:15:16	6
133165	99	29	27,2	cyclictest	788416	-21	kworker/u16:4+flush-8:0	12:10:25	4
450992	2	28	0,1	chrt	450993	-21	sh	09:40:29	7
133173	99	28	27,0	cyclictest	0	-21	swapper/7	08:07:36	7
133171	99	28	26,2	cyclictest	85034	-21	kworker/u16:2+flush-8:0	07:19:53	6
133171	99	28	26,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:01:05	6
133171	99	28	26,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:55:52	6
133171	99	28	26,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:55:52	6
133171	99	28	26,2	cyclictest	366659	-21	kworker/u16:3+events_unbound	09:37:54	6
133171	99	28	26,2	cyclictest	194428	-21	kworker/u16:4+events_unbound	08:59:16	6
133165	99	28	26,2	cyclictest	680072	-21	kworker/u16:1+events_unbound	11:33:14	4
133165	99	28	26,2	cyclictest	474488	-21	kworker/u16:3+events_unbound	10:29:10	4
133165	99	28	26,2	cyclictest	175266	-21	kworker/u16:1+events_unbound	09:38:23	4
133165	99	28	26,2	cyclictest	175266	-21	kworker/u16:1+events_unbound	07:33:36	4
133173	99	27	26,0	cyclictest	0	-21	swapper/7	11:34:46	7
133173	99	27	26,0	cyclictest	0	-21	swapper/7	09:09:55	7
133173	99	27	26,0	cyclictest	0	-21	swapper/7	08:41:43	7
133171	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:13:12	6
133171	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:13:12	6
133171	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	09:33:16	6
133171	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	09:33:16	6
133171	99	27	25,2	cyclictest	175266	-21	kworker/u16:1+events_unbound	08:30:15	6
133165	99	27	25,2	cyclictest	788416	-21	kworker/u16:4+events_unbound	12:04:34	4
133165	99	27	25,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:12:11	4
133165	99	27	25,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	11:57:49	4
133165	99	27	25,2	cyclictest	656020	-21	kworker/u16:0+events_unbound	11:15:09	4
133165	99	27	25,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	10:23:26	4
133165	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:43:45	4
133165	99	27	25,2	cyclictest	415534	-21	kworker/u16:2+events_unbound	10:18:09	4
133165	99	27	25,2	cyclictest	366659	-21	kworker/u16:3+flush-8:0	09:12:12	4
133165	99	27	25,2	cyclictest	328214	-21	kworker/u16:2+events_unbound	08:54:40	4
133165	99	27	25,2	cyclictest	223378	-21	kworker/u16:0+flush-8:0	08:36:20	4
133165	99	27	25,2	cyclictest	194428	-21	kworker/u16:4+events_unbound	09:05:04	4
133165	99	27	25,2	cyclictest	194428	-21	kworker/u16:4+events_unbound	08:14:44	4
133165	99	27	25,2	cyclictest	175266	-21	kworker/u16:1+flush-8:0	08:06:43	4
133173	99	26	25,0	cyclictest	0	-21	swapper/7	12:10:26	7
133173	99	26	25,0	cyclictest	0	-21	swapper/7	10:56:22	7
133173	99	26	25,0	cyclictest	0	-21	swapper/7	10:56:22	7
133173	99	26	25,0	cyclictest	0	-21	swapper/7	10:50:30	7
133173	99	26	25,0	cyclictest	0	-21	swapper/7	08:58:35	7
133171	99	26	24,2	cyclictest	692193	-21	kworker/u16:3+events_unbound	12:13:31	6
133171	99	26	24,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	10:41:30	6
133171	99	26	24,2	cyclictest	496689	-21	kworker/u16:1+events_unbound	10:20:51	6
133171	99	26	24,2	cyclictest	175266	-21	kworker/u16:1+flush-8:0	08:33:36	6
133171	99	26	24,2	cyclictest	165738	-21	kworker/u16:0+flush-8:0	07:28:04	6
133171	99	26	24,2	cyclictest	165738	-21	kworker/u16:0+flush-8:0	07:28:04	6
133167	99	26	24,2	cyclictest	763673	-21	kworker/u16:0+flush-8:0	11:57:11	5
133167	99	26	24,2	cyclictest	716305	-21	kworker/u16:4+flush-8:0	11:37:17	5
133167	99	26	24,2	cyclictest	415534	-21	kworker/u16:2+flush-8:0	11:27:03	5
133165	99	26	24,2	cyclictest	692193	-21	kworker/u16:3+flush-8:0	12:17:12	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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