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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 Sep 14, 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
1005862	2	148	0,1	sleep7	1005861	-21	ssh	09:16:49	7
1315603	2	97	0,1	sleep7	1315604	-21	sh	11:24:07	7
745389	2	50	25,8	sleep4	0	-21	swapper/4	07:07:23	4
745457	2	47	37,7	sleep5	0	-21	swapper/5	07:08:20	5
745860	99	45	38,5	cyclictest	866141	-21	latency_hist	08:09:44	7
745848	99	44	42,2	cyclictest	1155815	-21	kworker/u16:2+events_unbound	11:59:58	5
745843	99	42	39,3	cyclictest	969543	-21	kworker/u16:2+flush-8:0	09:24:45	4
742216	2	42	3,29	sleep7	0	-21	swapper/7	07:05:09	7
745848	99	39	37,2	cyclictest	1290202	-21	kworker/u16:0+flush-8:0	11:30:10	5
745848	99	39	37,2	cyclictest	1155815	-21	kworker/u16:2+events_unbound	11:58:22	5
745848	99	39	37,2	cyclictest	1143348	-21	kworker/u16:1+flush-8:0	10:34:44	5
745860	99	37	31,5	cyclictest	645	-21	systemd-journal	08:54:44	7
745848	99	37	35,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:39:44	5
745848	99	36	34,2	cyclictest	969543	-21	kworker/u16:2+events_unbound	09:23:55	5
745848	99	36	34,2	cyclictest	1377846	-21	kworker/u16:4+events_unbound	12:05:09	5
745848	99	36	34,2	cyclictest	1155815	-21	kworker/u16:2+events_unbound	11:15:54	5
745848	99	36	32,2	cyclictest	1303762	-21	kworker/u16:1+events_unbound	11:29:42	5
745843	99	36	33,2	cyclictest	1400123	-21	kworker/u16:0+events_unbound	12:09:54	4
745860	99	35	30,4	cyclictest	1032265	-21	latency_hist	09:29:44	7
745848	99	35	33,2	cyclictest	963479	-21	kworker/u16:0+events_unbound	09:42:02	5
745848	99	35	33,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:40:06	5
745848	99	35	33,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:40:06	5
745848	99	35	33,2	cyclictest	1143348	-21	kworker/u16:1+events_unbound	10:38:54	5
745848	99	34	32,2	cyclictest	1069316	-21	kworker/u16:2+events_unbound	09:50:55	5
745429	2	34	23,8	sleep6	0	-21	swapper/6	07:07:57	6
745848	99	33	31,2	cyclictest	1377846	-21	kworker/u16:4+events_unbound	11:51:47	5
745848	99	33	31,2	cyclictest	1178679	-21	kworker/u16:0+events_unbound	10:47:47	5
745843	99	33	31,2	cyclictest	1400123	-21	kworker/u16:0+events_unbound	12:06:54	4
745843	99	33	31,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:41:55	4
745843	99	33	31,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:41:55	4
745843	99	33	31,2	cyclictest	1229675	-21	kworker/u16:3+flush-8:0	11:19:39	4
745848	99	32	30,2	cyclictest	969543	-21	kworker/u16:2+events_unbound	09:28:21	5
745848	99	32	30,2	cyclictest	907687	-21	kworker/u16:4+events_unbound	09:32:02	5
745848	99	32	30,2	cyclictest	1377846	-21	kworker/u16:4+events_unbound	12:32:54	5
745848	99	32	30,2	cyclictest	1155815	-21	kworker/u16:2+events_unbound	12:27:23	5
745843	99	32	30,2	cyclictest	1400123	-21	kworker/u16:0+events_unbound	12:38:22	4
745843	99	32	30,2	cyclictest	1155815	-21	kworker/u16:2+events_unbound	12:28:22	4
745843	99	32	30,2	cyclictest	1106327	-21	kworker/u16:5+events_unbound	10:08:54	4
745848	99	31	30,1	cyclictest	963479	-21	kworker/u16:0+events_unbound	09:13:14	5
745848	99	31	29,2	cyclictest	1377846	-21	kworker/u16:4+events_unbound	12:19:34	5
745848	99	31	29,2	cyclictest	1254242	-21	kworker/u16:4+events_unbound	11:02:07	5
745848	99	31	29,2	cyclictest	1229675	-21	kworker/u16:3+events_unbound	11:11:42	5
745848	99	31	29,2	cyclictest	1155815	-21	kworker/u16:2+flush-8:0	12:20:18	5
745848	99	31	29,2	cyclictest	1143348	-21	kworker/u16:1+events_unbound	10:20:14	5
745848	99	31	29,2	cyclictest	1032749	-21	kworker/u16:1+flush-8:0	09:34:54	5
745848	99	31	29,2	cyclictest	1032749	-21	kworker/u16:1+flush-8:0	09:34:54	5
745843	99	31	29,2	cyclictest	1337722	-21	kworker/u16:5+events_unbound	11:32:54	4
745843	99	31	28,2	cyclictest	1178679	-21	kworker/u16:0+events_unbound	10:47:02	4
745843	99	31	28,2	cyclictest	1155815	-21	kworker/u16:2+flush-8:0	12:19:54	4
745848	99	30	29,1	cyclictest	1143348	-21	kworker/u16:1+events_unbound	10:55:05	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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