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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 Thu Jul 09, 2026 12:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4163106	2	96	0,1	sleep5	0	-21	swapper/5	12:30:10	5
3790426	2	96	0,1	sleep7	3790427	-21	cat	10:00:09	7
3424429	2	72	62,7	sleep5	0	-21	swapper/5	07:06:04	5
3675024	2	62	0,1	sleep7	3675025	-21	cat	09:14:49	7
3424638	2	60	48,7	sleep4	0	-21	swapper/4	07:09:00	4
3424661	2	58	23,30	sleep7	0	-21	swapper/7	07:09:19	7
3424982	99	43	39,4	cyclictest	4058194	-21	kworker/u16:3+flush-8:0	11:54:49	5
3424994	99	42	0,40	cyclictest	4120030	-21	latency_hist	12:14:48	7
3424986	99	42	40,2	cyclictest	3922454	-21	kworker/u16:2+events_unbound	11:24:39	6
3424986	99	40	37,2	cyclictest	3661585	-21	kworker/u16:5+events_unbound	09:35:03	6
3424986	99	39	37,2	cyclictest	3814484	-21	kworker/u16:2+events_unbound	10:26:23	6
3424994	99	38	32,5	cyclictest	3623536	-21	latency_hist	08:49:49	7
3424986	99	38	36,2	cyclictest	3814484	-21	kworker/u16:2+events_unbound	10:18:38	6
3424986	99	37	35,2	cyclictest	4058194	-21	kworker/u16:3+events_unbound	12:07:14	6
3424986	99	37	35,2	cyclictest	3996430	-21	kworker/u16:4+events_unbound	11:47:27	6
3424986	99	37	35,2	cyclictest	3661585	-21	kworker/u16:5+events_unbound	09:18:11	6
3424986	99	37	34,2	cyclictest	3506390	-21	kworker/u16:2+flush-8:0	08:45:04	6
3424986	99	37	34,2	cyclictest	2677098	-21	kworker/u16:3+events_unbound	07:19:51	6
3424986	99	36	34,2	cyclictest	4114882	-21	kworker/u16:2+events_unbound	12:28:06	6
3424986	99	36	34,2	cyclictest	4058194	-21	kworker/u16:3+events_unbound	11:59:19	6
3424986	99	36	34,2	cyclictest	4045163	-21	kworker/u16:1+events_unbound	12:20:39	6
3424986	99	36	34,2	cyclictest	3833007	-21	kworker/u16:1+events_unbound	10:49:11	6
3424986	99	36	34,2	cyclictest	3459255	-21	kworker/u16:1+events_unbound	09:43:43	6
4053641	2	34	0,1	sleep4	0	-21	swapper/4	11:45:13	4
3424994	99	34	32,1	cyclictest	3943557	-21	ssh	11:00:14	7
3424986	99	34	32,2	cyclictest	3860334	-21	kworker/u16:3+events_unbound	11:31:43	6
3424986	99	34	32,2	cyclictest	3786106	-21	kworker/u16:4+events_unbound	10:52:23	6
3424986	99	34	32,2	cyclictest	3633509	-21	kworker/u16:3+events_unbound	09:10:39	6
3696487	2	33	0,5	chrt	3696481	-21	ssh	09:20:18	7
3424986	99	33	31,2	cyclictest	4154627	-21	kworker/u16:0+events_unbound	12:32:03	6
3424986	99	33	31,2	cyclictest	3956865	-21	kworker/u16:0+events_unbound	11:07:26	6
3424986	99	33	31,2	cyclictest	3661585	-21	kworker/u16:5+events_unbound	09:23:26	6
3424613	2	33	10,8	sleep6	0	-21	swapper/6	07:08:37	6
3424986	99	32	30,2	cyclictest	3459255	-21	kworker/u16:1+events_unbound	09:00:22	6
3424986	99	31	29,2	cyclictest	3487549	-21	kworker/u16:3+events_unbound	07:39:51	6
3424986	99	31	29,2	cyclictest	3459255	-21	kworker/u16:1+events_unbound	10:01:32	6
3701463	2	30	0,1	chrt	3701464	-21	kthreadcore	09:25:07	7
3424994	99	30	0,28	cyclictest	908	-21	dbus-daemon	07:29:49	7
3424986	99	30	28,2	cyclictest	4154627	-21	kworker/u16:0+events_unbound	12:36:29	6
3424986	99	30	28,2	cyclictest	3956865	-21	kworker/u16:0+flush-8:0	12:11:58	6
3424986	99	30	28,2	cyclictest	3922454	-21	kworker/u16:2+flush-8:0	11:00:30	6
3424986	99	30	28,2	cyclictest	3860334	-21	kworker/u16:3+events_unbound	11:29:42	6
3424986	99	30	28,2	cyclictest	3595571	-21	kworker/u16:0+events_unbound	08:40:12	6
3762746	2	29	0,1	chrt	3762748	-21	irqcore	09:50:08	7
3641153	2	29	0,1	chrt	3641154	-21	kthreadcore	08:55:10	7
3424986	99	29	27,2	cyclictest	3956865	-21	kworker/u16:0+flush-8:0	12:00:23	6
3424986	99	29	27,2	cyclictest	3833007	-21	kworker/u16:1+flush-8:0	10:24:06	6
3424986	99	29	27,2	cyclictest	3786106	-21	kworker/u16:4+events_unbound	10:10:16	6
3424986	99	29	27,2	cyclictest	3699477	-21	kworker/u16:2+events_unbound	09:27:28	6
3424986	99	29	27,2	cyclictest	3661585	-21	kworker/u16:5+flush-8:0	09:31:27	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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