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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 Sat Jan 10, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2853192	2	70	0,1	sleep7	0	-21	swapper/7	21:18:23	7
2588374	99	60	54,5	cyclictest	650	-21	systemd-journal	22:53:06	7
2588083	2	59	49,7	sleep6	0	-21	swapper/6	19:08:03	6
2587981	2	54	21,29	sleep7	0	-21	swapper/7	19:06:36	7
2587912	2	43	19,8	sleep4	0	-21	swapper/4	19:05:36	4
2588369	99	41	39,2	cyclictest	2959248	-21	kworker/u16:1+events_unbound	22:12:34	5
2588369	99	39	37,2	cyclictest	3032079	-21	kworker/u16:1+events_unbound	22:34:39	5
2588369	99	39	37,2	cyclictest	3032079	-21	kworker/u16:1+events_unbound	22:34:39	5
2588369	99	39	37,2	cyclictest	2959248	-21	kworker/u16:1+events_unbound	22:14:57	5
2588369	99	39	37,2	cyclictest	2861361	-21	kworker/u16:4+events_unbound	21:27:53	5
2588369	99	39	36,2	cyclictest	2959248	-21	kworker/u16:1+events_unbound	22:18:10	5
2588365	99	39	37,2	cyclictest	3032079	-21	kworker/u16:1+flush-8:0	22:43:06	4
2588369	99	38	36,2	cyclictest	2849169	-21	kworker/u16:1+events_unbound	21:31:38	5
2588374	99	37	0,35	cyclictest	3007842	-21	cut	22:23:06	7
2588369	99	37	35,2	cyclictest	3264129	-21	kworker/u16:0+events_unbound	00:27:42	5
2588369	99	37	35,2	cyclictest	3191371	-21	kworker/u16:0+events_unbound	23:44:33	5
2588369	99	36	34,2	cyclictest	3117739	-21	kworker/u16:1+events_unbound	23:27:54	5
2588369	99	35	33,2	cyclictest	3212854	-21	kworker/u16:2+events_unbound	00:19:10	5
2588369	99	35	33,2	cyclictest	2995994	-21	kworker/u16:4+events_unbound	22:28:47	5
2588369	99	34	32,2	cyclictest	3212854	-21	kworker/u16:2+events_unbound	00:01:25	5
2588369	99	34	32,2	cyclictest	3212854	-21	kworker/u16:2+events_unbound	00:01:25	5
2588369	99	34	32,2	cyclictest	3081082	-21	kworker/u16:5+events_unbound	23:07:37	5
2588369	99	34	32,2	cyclictest	2861361	-21	kworker/u16:4+events_unbound	21:43:45	5
2588369	99	34	32,2	cyclictest	2795876	-21	kworker/u16:0+flush-8:0	22:38:37	5
2588374	99	33	27,5	cyclictest	3117699	-21	latency_hist	23:08:07	7
2588369	99	33	31,2	cyclictest	3212854	-21	kworker/u16:2+events_unbound	00:10:38	5
2588369	99	33	31,2	cyclictest	3068879	-21	kworker/u16:4+events_unbound	23:00:11	5
2588369	99	33	31,2	cyclictest	2795876	-21	kworker/u16:0+events_unbound	21:09:19	5
2588369	99	33	30,2	cyclictest	2849169	-21	kworker/u16:1+events_unbound	21:53:07	5
2588369	99	33	30,2	cyclictest	2849169	-21	kworker/u16:1+events_unbound	21:53:07	5
2588365	99	33	31,2	cyclictest	3117739	-21	kworker/u16:1+events_unbound	23:38:06	4
2588365	99	33	31,2	cyclictest	2861361	-21	kworker/u16:4+flush-8:0	21:34:18	4
2588080	2	33	22,8	sleep5	0	-21	swapper/5	19:08:02	5
2588369	99	32	30,2	cyclictest	2922544	-21	kworker/u16:2+events_unbound	22:05:26	5
2588369	99	32	30,2	cyclictest	2815274	-21	kworker/u16:3+events_unbound	21:21:55	5
2588365	99	32	30,2	cyclictest	2688922	-21	kworker/u16:5+events_unbound	20:10:06	4
2588369	99	31	29,2	cyclictest	3191371	-21	kworker/u16:0+events_unbound	23:55:41	5
2588369	99	31	29,2	cyclictest	3081082	-21	kworker/u16:5+events_unbound	23:21:25	5
2588369	99	31	29,2	cyclictest	2679255	-21	kworker/u16:1+events_unbound	20:29:07	5
2588374	99	30	29,0	cyclictest	0	-21	swapper/7	23:28:20	7
2588374	99	30	28,1	cyclictest	3302063	-21	ssh	00:23:19	7
2588374	99	30	25,4	cyclictest	3190947	-21	latency_hist	23:38:06	7
2588369	99	30	28,2	cyclictest	3068879	-21	kworker/u16:4+events_unbound	23:37:09	5
2588369	99	30	28,2	cyclictest	2922544	-21	kworker/u16:2+events_unbound	22:53:05	5
2588369	99	30	28,2	cyclictest	2849169	-21	kworker/u16:1+events_unbound	21:50:29	5
2588365	99	30	28,2	cyclictest	3117739	-21	kworker/u16:1+events_unbound	23:08:49	4
2588369	99	29	27,2	cyclictest	3103392	-21	kworker/u16:0+events_unbound	23:09:24	5
2588369	99	29	27,2	cyclictest	3068879	-21	kworker/u16:4+events_unbound	22:56:44	5
2588369	99	29	27,2	cyclictest	2995994	-21	kworker/u16:4+events_unbound	22:25:40	5
2588369	99	29	27,2	cyclictest	2922544	-21	kworker/u16:2+flush-8:0	21:58:41	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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