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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 Apr 16, 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
1807971	2	75	48,8	sleep5	0	-21	swapper/5	07:06:14	5
1808527	99	45	39,5	cyclictest	2032591	-21	latency_hist	09:04:53	7
1807481	2	40	1,32	sleep7	0	-21	swapper/7	07:05:27	7
1808527	99	37	35,1	cyclictest	0	-21	swapper/7	10:58:19	7
1808527	99	37	33,3	cyclictest	2530826	-21	ssh	12:29:00	7
1808526	99	37	35,2	cyclictest	2419094	-21	kworker/u16:0+events_unbound	11:48:40	6
1808526	99	37	35,2	cyclictest	2419094	-21	kworker/u16:0+events_unbound	11:48:40	6
1808526	99	37	35,2	cyclictest	2126014	-21	kworker/u16:3+flush-8:0	09:43:36	6
1807934	2	37	26,8	sleep4	0	-21	swapper/4	07:05:40	4
1808527	99	36	35,0	cyclictest	0	-21	swapper/7	10:04:48	7
1808527	99	35	34,0	cyclictest	0	-21	swapper/7	09:37:09	7
1808527	99	35	33,1	cyclictest	2504719	-21	ssh	12:16:04	7
1808527	99	35	33,1	cyclictest	0	-21	swapper/7	12:32:11	7
1808527	99	35	32,2	cyclictest	2125700	-21	ssh	09:41:00	7
1808526	99	35	33,2	cyclictest	2189041	-21	kworker/u16:4+events_unbound	10:11:17	6
1808527	99	34	33,0	cyclictest	0	-21	swapper/7	10:46:28	7
1808527	99	34	31,2	cyclictest	2077433	-21	ssh	09:22:12	7
1808526	99	34	32,2	cyclictest	2370053	-21	kworker/u16:1+events_unbound	12:04:52	6
1808526	99	34	32,2	cyclictest	2311903	-21	kworker/u16:4+flush-8:0	12:12:55	6
1808526	99	34	32,2	cyclictest	2272525	-21	kworker/u16:0+events_unbound	11:06:08	6
1808526	99	34	32,2	cyclictest	2272525	-21	kworker/u16:0+events_unbound	11:06:08	6
1808526	99	34	32,2	cyclictest	2272525	-21	kworker/u16:0+events_unbound	11:02:59	6
1808526	99	34	32,2	cyclictest	2025242	-21	kworker/u16:1+events_unbound	09:12:20	6
1808526	99	34	32,2	cyclictest	1917210	-21	kworker/u16:2+events_unbound	09:58:29	6
1808527	99	33	32,0	cyclictest	0	-21	swapper/7	10:32:08	7
1808527	99	33	31,1	cyclictest	2469208	-21	ssh	12:03:04	7
1808527	99	33	28,4	cyclictest	2213533	-21	latency_hist	10:19:53	7
1808526	99	33	31,2	cyclictest	2272525	-21	kworker/u16:0+flush-8:0	10:41:48	6
1808526	99	33	31,2	cyclictest	2189041	-21	kworker/u16:4+flush-8:0	10:38:43	6
1808526	99	33	31,2	cyclictest	1917210	-21	kworker/u16:2+events_unbound	10:19:45	6
1808526	99	33	27,6	cyclictest	2311903	-21	kworker/u16:4+flush-8:0	12:05:55	6
1808527	99	32	31,0	cyclictest	0	-21	swapper/7	11:13:24	7
1808527	99	32	31,0	cyclictest	0	-21	swapper/7	10:36:49	7
1808527	99	32	31,0	cyclictest	0	-21	swapper/7	10:22:33	7
1808527	99	32	31,0	cyclictest	0	-21	swapper/7	10:07:07	7
1808527	99	32	29,2	cyclictest	2162838	-21	ssh	09:56:57	7
1808526	99	32	30,2	cyclictest	2470278	-21	kworker/u16:2+events_unbound	12:32:56	6
1808526	99	32	30,2	cyclictest	2454902	-21	kworker/u16:0+flush-8:0	11:55:52	6
1808526	99	32	30,2	cyclictest	2370053	-21	kworker/u16:1+events_unbound	12:18:36	6
1808526	99	32	30,2	cyclictest	2370053	-21	kworker/u16:1+events_unbound	11:39:00	6
1808526	99	32	30,2	cyclictest	2370053	-21	kworker/u16:1+events_unbound	11:26:33	6
1808526	99	32	30,2	cyclictest	2311903	-21	kworker/u16:4+events_unbound	11:33:32	6
1808526	99	32	30,2	cyclictest	1917210	-21	kworker/u16:2+flush-8:0	11:10:47	6
1808526	99	32	30,2	cyclictest	1917210	-21	kworker/u16:2+events_unbound	09:19:40	6
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	12:37:44	7
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	11:37:24	7
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	11:24:11	7
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	11:09:20	7
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	11:09:20	7
1808527	99	31	30,0	cyclictest	0	-21	swapper/7	10:14:23	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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