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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 Mar 23, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1774068	2	73	48,7	sleep5	0	-21	swapper/5	19:02:17	5
1774056	2	58	47,8	sleep4	0	-21	swapper/4	19:02:08	4
1774435	99	48	43,4	cyclictest	2199938	-21	latency_hist	22:23:16	7
1774435	99	43	38,4	cyclictest	2139662	-21	latency_hist	21:58:16	7
1774421	99	42	40,2	cyclictest	2417278	-21	kworker/u16:4+events_unbound	23:58:28	4
1774435	99	40	0,38	cyclictest	1797196	-21	systemd-run	19:13:17	7
1764934	2	39	3,30	sleep7	0	-21	swapper/7	18:58:18	7
1774426	99	38	36,2	cyclictest	2320896	-21	kworker/u16:1+events_unbound	23:28:43	5
1774421	99	38	36,2	cyclictest	1883083	-21	kworker/u16:1+events_unbound	20:18:34	4
2476239	2	37	0,0	chrt	2476241	-21	ssh	00:16:38	7
1774421	99	36	34,2	cyclictest	2126493	-21	kworker/u16:2+events_unbound	21:53:31	4
1774421	99	36	34,2	cyclictest	1783900	-21	kworker/u16:4+events_unbound	19:18:31	4
1774435	99	35	0,33	cyclictest	5747	-21	gnome-shell	23:15:26	7
1774435	99	34	31,1	cyclictest	1835329	-21	latency_hist	19:33:16	7
1774421	99	33	31,2	cyclictest	2417229	-21	kworker/u16:3+events_unbound	00:13:38	4
1774421	99	33	31,2	cyclictest	2076610	-21	kworker/u16:4+events_unbound	21:38:40	4
1774421	99	33	31,2	cyclictest	1062586	-21	kworker/u16:2+events_unbound	19:28:31	4
1774114	2	33	23,7	sleep6	0	-21	swapper/6	19:02:58	6
1774430	99	32	30,2	cyclictest	2163823	-21	kworker/u16:0+flush-8:0	22:24:22	6
1774421	99	32	30,2	cyclictest	2320896	-21	kworker/u16:1+events_unbound	23:43:42	4
1774435	99	31	31,0	cyclictest	0	-21	swapper/7	21:08:13	7
1774426	99	31	28,2	cyclictest	1883083	-21	kworker/u16:1+events_unbound	20:08:30	5
1774421	99	30	28,2	cyclictest	2016047	-21	kworker/u16:1+events_unbound	21:08:44	4
1774435	99	29	28,0	cyclictest	0	-21	swapper/7	21:13:27	7
1774435	99	29	27,1	cyclictest	2306836	-21	ssh	23:05:18	7
1774435	99	29	25,3	cyclictest	2392468	-21	ssh	23:42:46	7
1774435	99	29	24,4	cyclictest	2007258	-21	latency_hist	21:03:16	7
1774435	99	29	0,28	cyclictest	2270254	-21	ssh	22:49:30	7
1774426	99	29	27,2	cyclictest	2417229	-21	kworker/u16:3+events_unbound	00:08:41	5
1774426	99	29	27,2	cyclictest	1806755	-21	kworker/u16:0+flush-8:0	19:33:32	5
1774421	99	29	27,2	cyclictest	2163823	-21	kworker/u16:0+events_unbound	23:03:29	4
1774426	99	28	26,2	cyclictest	2417278	-21	kworker/u16:4+events_unbound	00:28:35	5
1774426	99	28	26,2	cyclictest	2417278	-21	kworker/u16:4+events_unbound	00:28:35	5
1774426	99	28	26,2	cyclictest	2076610	-21	kworker/u16:4+events_unbound	22:18:32	5
1774426	99	28	26,2	cyclictest	1774187	-21	kworker/u16:3+events_unbound	19:08:21	5
1774421	99	28	26,2	cyclictest	2320896	-21	kworker/u16:1+events_unbound	00:03:44	4
1774421	99	28	26,2	cyclictest	1883083	-21	kworker/u16:1+events_unbound	20:28:38	4
1774435	99	27	26,0	cyclictest	0	-21	swapper/7	22:54:29	7
1774435	99	27	25,1	cyclictest	0	-21	swapper/7	19:18:42	7
1774435	99	27	22,3	cyclictest	2092822	-21	ssh	21:38:32	7
1774421	99	27	25,2	cyclictest	2281946	-21	kworker/u16:2+events_unbound	23:23:33	4
1774435	99	26	26,0	cyclictest	0	-21	swapper/7	23:50:17	7
1774435	99	26	26,0	cyclictest	0	-21	swapper/7	23:50:17	7
1774435	99	26	26,0	cyclictest	0	-21	swapper/7	23:18:49	7
1774435	99	26	24,1	cyclictest	2150112	-21	ssh	22:00:23	7
1774435	99	26	0,25	cyclictest	5747	-21	gnome-shell	22:11:26	7
1774426	99	26	24,2	cyclictest	2126493	-21	kworker/u16:2+events_unbound	22:03:31	5
1774426	99	26	24,2	cyclictest	1987000	-21	kworker/u16:0+events_unbound	20:48:44	5
1774426	99	26	24,2	cyclictest	1950097	-21	kworker/u16:3+events_unbound	21:13:43	5
1774426	99	26	24,2	cyclictest	1806755	-21	kworker/u16:0+events_unbound	19:38:31	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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