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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 100 highest latencies:

System rack0slot2.osadl.org (updated Fri Jun 12, 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
1919200	2	58	48,7	sleep4	0	-21	swapper/4	19:01:55	4
1919391	2	54	43,8	sleep5	0	-21	swapper/5	19:04:37	5
1919803	99	52	50,2	cyclictest	2393474	-21	kworker/u16:1+flush-8:0	23:16:34	5
1919803	99	44	41,2	cyclictest	2144659	-21	kworker/u16:4+events_unbound	22:11:10	5
1919212	2	44	2,36	sleep7	0	-21	swapper/7	19:02:06	7
1919803	99	41	39,2	cyclictest	2178307	-21	kworker/u16:2+events_unbound	21:21:10	5
1919799	99	41	39,2	cyclictest	2144659	-21	kworker/u16:4+flush-8:0	22:26:08	4
1919803	99	40	38,2	cyclictest	2144659	-21	kworker/u16:4+flush-8:0	21:46:37	5
1919808	99	39	34,4	cyclictest	2395846	-21	latency_hist	22:46:08	7
1919803	99	39	37,2	cyclictest	2393474	-21	kworker/u16:1+events_unbound	23:11:10	5
1919803	99	37	35,2	cyclictest	2565590	-21	kworker/u16:5+flush-8:0	00:12:18	5
1919803	99	37	35,2	cyclictest	2117229	-21	kworker/u16:3+events_unbound	20:46:33	5
1919803	99	36	30,5	cyclictest	2393474	-21	kworker/u16:1+flush-8:0	00:01:07	5
1919808	99	35	33,1	cyclictest	2154121	-21	diskmemload	21:21:34	7
1919803	99	35	33,2	cyclictest	2478587	-21	kworker/u16:0+events_unbound	00:07:33	5
1919803	99	35	33,2	cyclictest	2408040	-21	kworker/u16:3+events_unbound	23:33:17	5
1919803	99	35	33,2	cyclictest	1187982	-21	kworker/u16:0+flush-8:0	21:41:06	5
1919808	99	33	32,0	cyclictest	0	-21	swapper/7	19:51:22	7
1919803	99	33	31,2	cyclictest	2309975	-21	kworker/u16:1+flush-8:0	22:25:18	5
1919287	2	33	23,7	sleep6	0	-21	swapper/6	19:03:10	6
1919808	99	32	27,4	cyclictest	2299112	-21	latency_hist	22:06:08	7
1919803	99	32	30,2	cyclictest	2408040	-21	kworker/u16:3+flush-8:0	23:08:18	5
1919803	99	32	30,2	cyclictest	2261538	-21	kworker/u16:2+events_unbound	22:20:19	5
1919803	99	31	29,2	cyclictest	2408040	-21	kworker/u16:3+events_unbound	22:53:46	5
1919803	99	31	28,2	cyclictest	2408040	-21	kworker/u16:3+flush-8:0	23:01:18	5
1919803	99	31	28,2	cyclictest	2261538	-21	kworker/u16:2+events_unbound	22:01:18	5
1919808	99	30	29,0	cyclictest	0	-21	swapper/7	19:06:31	7
1919803	99	30	28,2	cyclictest	2651057	-21	kworker/u16:0+events_unbound	00:31:41	5
1919803	99	30	28,2	cyclictest	2393474	-21	kworker/u16:1+events_unbound	23:39:26	5
1919803	99	30	28,2	cyclictest	2178307	-21	kworker/u16:2+flush-8:0	21:16:37	5
1919803	99	30	28,2	cyclictest	2178307	-21	kworker/u16:2+flush-8:0	21:16:37	5
1919803	99	30	28,2	cyclictest	2144659	-21	kworker/u16:4+flush-8:0	22:32:17	5
1919803	99	29	27,2	cyclictest	2541103	-21	kworker/u16:4+flush-8:0	23:51:13	5
1919803	99	29	27,2	cyclictest	2408040	-21	kworker/u16:3+flush-8:0	23:46:42	5
1919803	99	29	27,2	cyclictest	2393474	-21	kworker/u16:1+events_unbound	00:30:26	5
1919803	99	29	27,2	cyclictest	2372000	-21	kworker/u16:2+flush-8:0	22:45:26	5
1919803	99	29	27,2	cyclictest	2190820	-21	kworker/u16:1+events_unbound	21:53:07	5
2393826	2	28	0,0	chrt	0	-21	swapper/4	22:42:23	4
1919808	99	28	27,0	cyclictest	0	-21	swapper/7	23:26:36	7
1919808	99	28	23,4	cyclictest	2134864	-21	latency_hist	20:56:08	7
1919803	99	28	26,2	cyclictest	2613449	-21	kworker/u16:4+events_unbound	00:20:34	5
1919803	99	28	26,2	cyclictest	2478587	-21	kworker/u16:0+events_unbound	00:03:17	5
1919803	99	28	26,2	cyclictest	2190821	-21	kworker/u16:3+events_unbound	21:34:10	5
1919803	99	28	26,2	cyclictest	2144659	-21	kworker/u16:4+events_unbound	21:28:10	5
1919808	99	27	25,1	cyclictest	0	-21	swapper/7	22:36:30	7
1919808	99	27	21,5	cyclictest	2625454	-21	latency_hist	00:21:08	7
1919803	99	27	25,2	cyclictest	2372000	-21	kworker/u16:2+flush-8:0	22:38:26	5
1919807	99	26	24,2	cyclictest	2393474	-21	kworker/u16:1+flush-8:0	23:11:34	6
1919803	99	26	24,2	cyclictest	2565590	-21	kworker/u16:5+flush-8:0	00:22:22	5
1919803	99	26	24,2	cyclictest	2309975	-21	kworker/u16:1+events_unbound	22:29:05	5
1919803	99	26	24,2	cyclictest	2275000	-21	kworker/u16:0+flush-8:0	22:06:42	5
1919803	99	26	23,2	cyclictest	1187982	-21	kworker/u16:0+events_unbound	19:16:10	5
1919803	99	25	23,2	cyclictest	2444674	-21	kworker/u16:2+events_unbound	23:23:34	5
1919803	99	25	23,2	cyclictest	2408040	-21	kworker/u16:3+flush-8:0	23:26:54	5
1919803	99	25	23,2	cyclictest	1187982	-21	kworker/u16:0+events_unbound	21:45:05	5
1919808	99	24	22,1	cyclictest	0	-21	swapper/7	21:41:18	7
1919808	99	24	22,1	cyclictest	0	-21	swapper/7	19:56:37	7
1919803	99	24	22,2	cyclictest	2393474	-21	kworker/u16:1+events_unbound	22:51:06	5
1919803	99	24	22,2	cyclictest	2371999	-21	kworker/u16:0+events_unbound	22:57:58	5
1919803	99	24	22,2	cyclictest	2190820	-21	kworker/u16:1+events_unbound	21:59:54	5
1919803	99	24	22,2	cyclictest	2190820	-21	kworker/u16:1+events_unbound	21:59:54	5
1919803	99	24	22,2	cyclictest	2134856	-21	kworker/u16:2+events_unbound	20:56:29	5
1919803	99	24	22,2	cyclictest	2086491	-21	kworker/u16:1+events_unbound	21:10:15	5
1919803	99	24	22,2	cyclictest	2010131	-21	kworker/u16:2+flush-8:0	20:31:38	5
1919803	99	24	21,2	cyclictest	2144659	-21	kworker/u16:4+flush-8:0	21:11:09	5
2175299	2	22	0,1	chrt	2175300	-21	/usr/sbin/munin	21:11:38	7
1919808	99	22	21,0	cyclictest	0	-21	swapper/7	23:21:21	7
1919808	99	22	18,3	cyclictest	1025	-21	runrttasks	00:26:32	7
1919808	99	22	17,4	cyclictest	2528885	-21	latency_hist	23:41:08	7
1919803	99	22	20,2	cyclictest	2444674	-21	kworker/u16:2+flush-8:0	23:42:21	5
1931834	2	21	0,1	chrt	1931838	-21	kthreadcore	19:11:11	7
1919808	99	21	20,0	cyclictest	0	-21	swapper/7	22:51:23	7
1919808	99	21	20,0	cyclictest	0	-21	swapper/7	22:11:32	7
1919808	99	20	19,0	cyclictest	0	-21	swapper/7	23:31:37	7
1919808	99	20	19,0	cyclictest	0	-21	swapper/7	20:31:32	7
1919807	99	20	18,2	cyclictest	1981447	-21	kworker/u16:2+events_unbound	19:36:23	6
1919803	99	20	18,2	cyclictest	1961474	-21	kworker/u16:1+events_unbound	19:51:36	5
1919803	99	20	18,2	cyclictest	1846120	-21	kworker/u16:3+flush-8:0	19:13:18	5
1919803	99	20	18,2	cyclictest	1187982	-21	kworker/u16:0+flush-8:0	20:24:18	5
1919808	99	19	18,0	cyclictest	0	-21	swapper/7	19:36:30	7
1919803	99	19	17,2	cyclictest	1187982	-21	kworker/u16:0+events_unbound	20:36:21	5
1919803	99	19	17,2	cyclictest	1187982	-21	kworker/u16:0+events_unbound	20:36:21	5
1919799	99	19	17,2	cyclictest	2393474	-21	kworker/u16:1+events_unbound	23:41:41	4
1919808	99	18	17,0	cyclictest	0	-21	swapper/7	22:31:20	7
1919808	99	18	16,1	cyclictest	2429666	-21	ssh	22:56:37	7
1919808	99	18	15,2	cyclictest	2358444	-21	ssh	22:29:03	7
1919808	99	18	0,17	cyclictest	2067584	-21	latency_hist	20:21:09	7
1919807	99	18	16,2	cyclictest	2393474	-21	kworker/u16:1+flush-8:0	22:56:34	6
1919803	99	18	16,2	cyclictest	2019654	-21	kworker/u16:4+events_unbound	20:18:18	5
1919799	99	18	15,3	cyclictest	1881722	-21	kworker/u16:2+flush-8:0	19:11:13	4
1919808	99	17	16,0	cyclictest	0	-21	swapper/7	23:51:34	7
1919808	99	17	16,0	cyclictest	0	-21	swapper/7	23:01:31	7
1919808	99	17	16,0	cyclictest	0	-21	swapper/7	20:11:35	7
1919808	99	17	16,0	cyclictest	0	-21	swapper/7	19:31:30	7
1919808	99	17	16,0	cyclictest	0	-21	swapper/7	19:26:34	7
1919808	99	17	15,1	cyclictest	0	-21	swapper/7	22:46:58	7
1919808	99	17	15,1	cyclictest	0	-21	swapper/7	00:06:34	7
1919808	99	17	14,2	cyclictest	2308538	-21	ssh	22:06:36	7
1919803	99	17	15,2	cyclictest	1846120	-21	kworker/u16:3+events_unbound	19:26:19	5
1919808	99	16	15,0	cyclictest	0	-21	swapper/7	23:47:02	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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