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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 Mon Dec 01, 2025 00:43:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4109023	2	58	48,7	sleep6	0	-21	swapper/6	03:18:48	6
4109681	99	54	51,2	cyclictest	30610	-21	kworker/u16:5+flush-8:0	05:02:57	6
4109235	2	50	39,7	sleep4	0	-21	swapper/4	03:21:43	4
4109684	99	48	43,4	cyclictest	556389	-21	latency_hist	08:42:56	7
4109681	99	46	44,2	cyclictest	505475	-21	kworker/u16:5+events_unbound	08:13:21	6
4109681	99	42	40,2	cyclictest	364805	-21	kworker/u16:3+events_unbound	07:08:20	6
4109160	2	42	31,7	sleep5	0	-21	swapper/5	03:20:40	5
4109043	2	42	7,30	sleep7	0	-21	swapper/7	03:19:05	7
4109684	99	41	0,39	cyclictest	589235	-21	systemd-journal	07:07:57	7
4109681	99	41	38,2	cyclictest	302373	-21	kworker/u16:3+flush-8:0	06:37:57	6
4109673	99	41	39,2	cyclictest	130874	-21	kworker/u16:3+events_unbound	05:13:12	4
4109684	99	40	0,38	cyclictest	293255	-21	latency_hist	06:27:57	7
4109676	99	38	36,2	cyclictest	353582	-21	kworker/u16:2+flush-8:0	06:58:23	5
4109676	99	37	35,2	cyclictest	302373	-21	kworker/u16:3+events_unbound	06:35:20	5
4109676	99	36	34,2	cyclictest	30610	-21	kworker/u16:5+flush-8:0	04:25:20	5
4109681	99	35	33,2	cyclictest	3396967	-21	kworker/u16:7+events_unbound	03:23:12	6
4109681	99	35	33,2	cyclictest	242783	-21	kworker/u16:1+events_unbound	06:53:21	6
4109681	99	35	32,2	cyclictest	212293	-21	kworker/u16:3+flush-8:0	06:03:20	6
4109676	99	35	33,2	cyclictest	60443	-21	kworker/u16:0+flush-8:0	04:53:23	5
4109676	99	35	33,2	cyclictest	251947	-21	kworker/u16:4+events_unbound	06:13:25	5
4109681	99	34	31,2	cyclictest	323223	-21	kworker/u16:4+flush-8:0	06:42:57	6
4109676	99	34	32,2	cyclictest	434637	-21	kworker/u16:4+events_unbound	07:50:05	5
4109676	99	34	31,2	cyclictest	505475	-21	kworker/u16:5+flush-8:0	08:18:23	5
4109673	99	34	32,2	cyclictest	353582	-21	kworker/u16:2+flush-8:0	07:08:24	4
4109676	99	33	31,2	cyclictest	242783	-21	kworker/u16:1+events_unbound	06:26:09	5
4109676	99	33	30,2	cyclictest	60985	-21	kworker/u16:2+flush-8:0	05:02:59	5
4109684	99	32	31,0	cyclictest	0	-21	swapper/7	04:49:17	7
4109684	99	32	31,0	cyclictest	0	-21	swapper/7	03:39:08	7
4109676	99	32	30,2	cyclictest	60443	-21	kworker/u16:0+flush-8:0	05:08:28	5
4109676	99	32	30,2	cyclictest	364805	-21	kworker/u16:3+events_unbound	07:42:11	5
4109676	99	32	30,2	cyclictest	323223	-21	kworker/u16:4+events_unbound	07:14:12	5
4109676	99	32	30,2	cyclictest	323223	-21	kworker/u16:4+events_unbound	07:03:52	5
4109676	99	32	30,2	cyclictest	251947	-21	kworker/u16:4+events_unbound	06:03:39	5
4109676	99	32	30,2	cyclictest	242783	-21	kworker/u16:1+flush-8:0	06:51:20	5
4109676	99	32	30,2	cyclictest	212293	-21	kworker/u16:3+flush-8:0	05:55:39	5
4109676	99	32	29,3	cyclictest	4179563	-21	kworker/u16:2+events_unbound	04:05:19	5
4109673	99	32	30,2	cyclictest	60443	-21	kworker/u16:0+flush-8:0	05:23:23	4
4109673	99	32	30,2	cyclictest	242783	-21	kworker/u16:1+flush-8:0	06:03:12	4
4109673	99	32	30,2	cyclictest	19672	-21	kworker/u16:0+flush-8:0	04:13:12	4
4109681	99	31	29,2	cyclictest	364805	-21	kworker/u16:3+events_unbound	07:18:20	6
4109681	99	31	28,2	cyclictest	323223	-21	kworker/u16:4+flush-8:0	07:13:12	6
4109676	99	31	29,2	cyclictest	60443	-21	kworker/u16:0+events_unbound	06:01:49	5
4109676	99	31	29,2	cyclictest	535998	-21	kworker/u16:4+events_unbound	08:35:24	5
4109676	99	31	29,2	cyclictest	30610	-21	kworker/u16:5+events_unbound	04:40:00	5
4109676	99	31	29,2	cyclictest	19672	-21	kworker/u16:0+events_unbound	04:12:05	5
4109676	99	31	29,2	cyclictest	162505	-21	kworker/u16:2+flush-8:0	05:28:48	5
4109684	99	30	29,0	cyclictest	0	-21	swapper/7	08:43:36	7
4109684	99	30	29,0	cyclictest	0	-21	swapper/7	07:25:24	7
4109684	99	30	29,0	cyclictest	0	-21	swapper/7	04:19:04	7
4109684	99	30	29,0	cyclictest	0	-21	swapper/7	03:47:16	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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