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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 Sun Mar 15, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
170062	2	98	0,0	sleep4	0	-21	swapper/4	23:09:13	4
4112712	2	95	0,1	sleep7	4112713	-21	cut	21:24:09	7
3826261	2	58	48,7	sleep4	0	-21	swapper/4	19:01:12	4
3826746	99	54	51,2	cyclictest	152685	-21	kworker/u16:1+events_unbound	23:44:03	5
3826746	99	49	47,2	cyclictest	80992	-21	kworker/u16:3+events_unbound	22:34:11	5
3826746	99	49	47,2	cyclictest	80992	-21	kworker/u16:3+events_unbound	22:34:11	5
3826746	99	49	47,2	cyclictest	4177561	-21	kworker/u16:1+events_unbound	22:09:18	5
3826746	99	49	47,2	cyclictest	4095365	-21	kworker/u16:0+flush-8:0	21:33:48	5
3826748	99	48	45,2	cyclictest	3916363	-21	kworker/u16:3+flush-8:0	20:48:49	6
3826182	2	48	38,7	sleep6	0	-21	swapper/6	19:00:10	6
3826746	99	47	44,2	cyclictest	3856201	-21	kworker/u16:1+events_unbound	20:34:02	5
3826746	99	47	44,2	cyclictest	3856201	-21	kworker/u16:1+events_unbound	20:34:02	5
3826746	99	45	43,2	cyclictest	311456	-21	kworker/u16:2+flush-8:0	00:29:22	5
3826746	99	44	42,2	cyclictest	81100	-21	kworker/u16:5+flush-8:0	23:29:18	5
3826746	99	44	42,2	cyclictest	126837	-21	kworker/u16:2+events_unbound	23:19:02	5
3826751	99	43	38,4	cyclictest	4071424	-21	latency_hist	21:08:48	7
3826751	99	43	37,5	cyclictest	3964109	-21	latency_hist	20:13:49	7
3826751	99	43	0,41	cyclictest	650	-21	systemd-journal	21:48:48	7
3826748	99	42	39,2	cyclictest	3856201	-21	kworker/u16:1+flush-8:0	21:14:02	6
3826746	99	42	40,2	cyclictest	81100	-21	kworker/u16:5+events_unbound	23:14:15	5
3826746	99	42	40,2	cyclictest	4060016	-21	kworker/u16:4+events_unbound	21:16:20	5
3826746	99	42	40,2	cyclictest	152685	-21	kworker/u16:1+events_unbound	23:59:10	5
3826746	99	42	40,1	cyclictest	4177561	-21	kworker/u16:1+events_unbound	22:24:03	5
3826746	99	41	39,2	cyclictest	81100	-21	kworker/u16:5+events_unbound	23:24:15	5
3826201	2	41	30,8	sleep5	0	-21	swapper/5	19:00:25	5
3826748	99	40	36,3	cyclictest	279877	-21	kworker/u16:4+flush-8:0	23:54:17	6
3826746	99	40	38,2	cyclictest	126837	-21	kworker/u16:2+flush-8:0	22:59:18	5
3826746	99	39	37,2	cyclictest	4095365	-21	kworker/u16:0+events_unbound	22:00:11	5
3817350	2	39	3,31	sleep7	0	-21	swapper/7	18:58:58	7
3826746	99	38	37,1	cyclictest	3856201	-21	kworker/u16:1+events_unbound	21:36:55	5
3826746	99	38	36,2	cyclictest	4177561	-21	kworker/u16:1+flush-8:0	22:29:04	5
3826746	99	38	36,2	cyclictest	152685	-21	kworker/u16:1+events_unbound	23:40:46	5
3826748	99	37	34,2	cyclictest	3807493	-21	kworker/u16:0+flush-8:0	19:49:14	6
3826746	99	37	35,2	cyclictest	81100	-21	kworker/u16:5+flush-8:0	23:34:23	5
3826746	99	37	35,2	cyclictest	4095365	-21	kworker/u16:0+events_unbound	21:46:03	5
3826746	99	37	35,2	cyclictest	271634	-21	kworker/u16:0+events_unbound	23:57:34	5
3826746	99	37	35,2	cyclictest	247459	-21	kworker/u16:3+events_unbound	00:19:23	5
3826746	99	37	35,2	cyclictest	126837	-21	kworker/u16:2+events_unbound	22:51:19	5
3826748	99	36	34,2	cyclictest	4080239	-21	kworker/u16:5+flush-8:0	21:33:44	6
3826746	99	36	34,2	cyclictest	271634	-21	kworker/u16:0+events_unbound	00:13:10	5
3826746	99	36	34,2	cyclictest	247459	-21	kworker/u16:3+events_unbound	00:26:47	5
3826746	99	35	33,2	cyclictest	81100	-21	kworker/u16:5+events_unbound	22:39:10	5
3826746	99	35	33,2	cyclictest	4177561	-21	kworker/u16:1+events_unbound	22:45:39	5
3826746	99	35	33,2	cyclictest	4177561	-21	kworker/u16:1+events_unbound	22:15:59	5
3826746	99	35	33,2	cyclictest	4095365	-21	kworker/u16:0+events_unbound	21:27:11	5
3826746	99	35	33,2	cyclictest	271634	-21	kworker/u16:0+events_unbound	00:18:46	5
3826746	99	34	33,1	cyclictest	4140532	-21	kworker/u16:2+events_unbound	21:43:07	5
3826746	99	34	32,2	cyclictest	4095365	-21	kworker/u16:0+events_unbound	21:52:59	5
3826746	99	34	32,2	cyclictest	4080239	-21	kworker/u16:5+events_unbound	21:10:48	5
3826746	99	34	32,2	cyclictest	4080239	-21	kworker/u16:5+events_unbound	21:10:48	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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