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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 Jun 10, 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
4044715	2	69	0,0	sleep4	0	-21	swapper/4	23:26:39	4
4012859	2	68	0,1	sleep7	4012861	-21	latency_hist	23:16:16	7
3463437	2	59	48,8	sleep4	0	-21	swapper/4	19:05:32	4
3463802	99	52	50,2	cyclictest	3927822	-21	kworker/u16:1+flush-8:0	23:06:32	6
3463802	99	49	47,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	21:26:46	6
3463802	99	48	46,2	cyclictest	3709690	-21	kworker/u16:1+events_unbound	21:51:43	6
3454357	2	47	36,7	sleep5	0	-21	swapper/5	19:01:24	5
3463802	99	46	43,2	cyclictest	1930336	-21	kworker/u16:2+events_unbound	19:16:31	6
3463802	99	45	43,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	22:21:49	6
3463802	99	44	42,2	cyclictest	3709690	-21	kworker/u16:1+events_unbound	21:46:48	6
3463802	99	44	42,2	cyclictest	3709690	-21	kworker/u16:1+events_unbound	21:46:48	6
3463802	99	44	42,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	20:21:41	6
3463802	99	44	42,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	20:01:40	6
3463802	99	43	41,2	cyclictest	3879686	-21	kworker/u16:1+flush-8:0	22:31:49	6
3463802	99	43	41,2	cyclictest	3879686	-21	kworker/u16:1+flush-8:0	22:31:49	6
3460446	2	43	1,31	sleep7	0	-21	swapper/7	19:01:42	7
3463802	99	42	40,2	cyclictest	3504199	-21	kworker/u16:0+flush-8:0	19:41:44	6
3463793	99	42	40,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	21:16:42	4
3463802	99	41	39,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	22:16:44	6
3463802	99	40	38,2	cyclictest	3659357	-21	kworker/u16:3+flush-8:0	20:56:45	6
3463807	99	39	33,5	cyclictest	3649712	-21	latency_hist	20:41:16	7
3463802	99	39	37,2	cyclictest	2749613	-21	kworker/u16:4+events_unbound	19:26:45	6
3463802	99	38	36,2	cyclictest	4024570	-21	kworker/u16:3+events_unbound	23:21:37	6
3463802	99	38	36,2	cyclictest	3927822	-21	kworker/u16:1+flush-8:0	22:56:45	6
3463802	99	38	36,2	cyclictest	3900175	-21	kworker/u16:3+events_unbound	22:28:18	6
3463802	99	38	36,2	cyclictest	3832148	-21	kworker/u16:0+events_unbound	22:11:49	6
3463802	99	38	35,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	22:41:31	6
3463798	99	38	35,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	22:11:31	5
3463802	99	37	35,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	20:41:39	6
3463802	99	37	34,2	cyclictest	4082784	-21	kworker/u16:3+events_unbound	00:01:33	6
3463802	99	37	34,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	20:06:32	6
3463802	99	36	34,2	cyclictest	4133306	-21	kworker/u16:5+events_unbound	00:08:43	6
3463802	99	36	34,2	cyclictest	3927822	-21	kworker/u16:1+events_unbound	23:04:06	6
3463802	99	36	34,2	cyclictest	3927822	-21	kworker/u16:1+events_unbound	22:56:01	6
3463802	99	36	34,2	cyclictest	3832148	-21	kworker/u16:0+events_unbound	22:06:48	6
3463802	99	36	34,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	23:11:51	6
3463802	99	36	34,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	19:51:45	6
3463802	99	36	34,2	cyclictest	3515642	-21	kworker/u16:1+flush-8:0	19:31:46	6
3463802	99	36	34,2	cyclictest	3472459	-21	kworker/u16:3+flush-8:0	19:36:37	6
3463802	99	36	34,2	cyclictest	3472459	-21	kworker/u16:3+flush-8:0	19:36:37	6
3463798	99	36	34,2	cyclictest	3927822	-21	kworker/u16:1+flush-8:0	23:06:11	5
3463802	99	35	33,2	cyclictest	4133302	-21	kworker/u16:2+events_unbound	00:32:39	6
3463802	99	35	33,2	cyclictest	4082784	-21	kworker/u16:3+events_unbound	23:53:22	6
3463802	99	35	33,2	cyclictest	4082784	-21	kworker/u16:3+events_unbound	23:53:22	6
3463802	99	35	33,2	cyclictest	3832148	-21	kworker/u16:0+events_unbound	23:27:31	6
3463802	99	35	33,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	21:58:04	6
3463798	99	35	32,2	cyclictest	3544271	-21	kworker/u16:2+flush-8:0	20:16:42	5
3463807	99	34	29,4	cyclictest	3697598	-21	latency_hist	21:06:16	7
3463802	99	33	31,2	cyclictest	4133302	-21	kworker/u16:2+events_unbound	00:17:42	6
3463802	99	33	31,2	cyclictest	3544271	-21	kworker/u16:2+events_unbound	21:44:31	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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