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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 May 14, 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
2356820	2	93	0,0	sleep4	0	-21	swapper/4	21:25:20	4
2075276	2	57	47,7	sleep4	0	-21	swapper/4	19:06:59	4
2075664	99	56	54,2	cyclictest	2515600	-21	kworker/u16:3+events_unbound	00:18:26	5
2075115	2	52	42,7	sleep5	0	-21	swapper/5	19:04:44	5
2075664	99	49	47,2	cyclictest	2515600	-21	kworker/u16:3+flush-8:0	23:28:34	5
2075325	2	44	2,36	sleep7	0	-21	swapper/7	19:07:42	7
2075669	99	40	35,3	cyclictest	2455312	-21	cat	22:08:04	7
2075669	99	37	31,5	cyclictest	2564155	-21	latency_hist	22:53:04	7
2075664	99	37	35,2	cyclictest	2263052	-21	kworker/u16:2+events_unbound	22:14:14	5
2075664	99	36	34,2	cyclictest	2515600	-21	kworker/u16:3+events_unbound	00:08:28	5
2075664	99	35	33,2	cyclictest	2635246	-21	kworker/u16:2+events_unbound	23:42:26	5
2075664	99	35	33,2	cyclictest	2243078	-21	kworker/u16:3+events_unbound	22:07:14	5
2075138	2	35	25,7	sleep6	0	-21	swapper/6	19:05:01	6
2075664	99	34	32,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	22:46:17	5
2075664	99	34	31,2	cyclictest	2263052	-21	kworker/u16:2+flush-8:0	22:22:41	5
2075664	99	34	30,3	cyclictest	2252697	-21	kworker/u16:0+events_unbound	23:20:25	5
2075664	99	33	31,2	cyclictest	2721968	-21	kworker/u16:4+events_unbound	00:05:14	5
2075664	99	33	31,2	cyclictest	2515600	-21	kworker/u16:3+events_unbound	23:56:25	5
2075664	99	33	31,2	cyclictest	2263052	-21	kworker/u16:2+flush-8:0	21:28:27	5
2075664	99	33	31,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	21:54:47	5
2075664	99	32	30,2	cyclictest	2767567	-21	kworker/u16:0+events_unbound	00:32:01	5
2075664	99	32	30,2	cyclictest	2721968	-21	kworker/u16:4+events_unbound	00:01:02	5
2075664	99	32	30,2	cyclictest	2695355	-21	kworker/u16:1+events_unbound	00:36:13	5
2075664	99	32	30,2	cyclictest	2552447	-21	kworker/u16:1+flush-8:0	22:54:26	5
2075664	99	32	30,2	cyclictest	2515600	-21	kworker/u16:3+events_unbound	23:16:13	5
2075664	99	32	30,2	cyclictest	2465400	-21	kworker/u16:1+events_unbound	22:12:13	5
2075664	99	32	30,2	cyclictest	2263052	-21	kworker/u16:2+events_unbound	22:41:14	5
2075664	99	31	29,2	cyclictest	2263052	-21	kworker/u16:2+events_unbound	21:38:01	5
2075664	99	30	28,2	cyclictest	2695355	-21	kworker/u16:1+flush-8:0	00:25:13	5
2075664	99	30	28,2	cyclictest	2552447	-21	kworker/u16:1+events_unbound	22:52:46	5
2075657	99	30	28,2	cyclictest	2089300	-21	kworker/u16:0+events_unbound	19:38:29	4
2075666	99	29	26,2	cyclictest	2089300	-21	kworker/u16:0+flush-8:0	20:03:30	6
2075664	99	29	27,2	cyclictest	2515600	-21	kworker/u16:3+events_unbound	23:00:49	5
2075664	99	29	27,2	cyclictest	2465400	-21	kworker/u16:1+events_unbound	22:25:13	5
2075664	99	29	27,2	cyclictest	2263052	-21	kworker/u16:2+flush-8:0	22:31:13	5
2075664	99	29	27,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	23:10:02	5
2075664	99	29	27,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	23:10:02	5
2075657	99	29	27,2	cyclictest	2515600	-21	kworker/u16:3+flush-8:0	23:58:25	4
2075669	99	28	26,1	cyclictest	0	-21	swapper/7	22:53:17	7
2075666	99	28	26,2	cyclictest	2552447	-21	kworker/u16:1+flush-8:0	22:48:29	6
2075664	99	28	26,2	cyclictest	2515600	-21	kworker/u16:3+flush-8:0	23:43:49	5
2075664	99	28	26,2	cyclictest	2515600	-21	kworker/u16:3+flush-8:0	22:34:17	5
2075664	99	28	26,2	cyclictest	2252697	-21	kworker/u16:0+flush-8:0	23:07:14	5
2075664	99	28	26,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	23:28:02	5
2075664	99	28	26,2	cyclictest	2243078	-21	kworker/u16:3+events_unbound	21:45:13	5
2075664	99	28	26,2	cyclictest	2243078	-21	kworker/u16:3+events_unbound	21:45:13	5
2075664	99	28	26,2	cyclictest	2136643	-21	kworker/u16:3+events_unbound	19:58:01	5
2349409	2	27	0,0	chrt	0	-21	swapper/5	21:23:21	5
2075669	99	27	26,0	cyclictest	0	-21	swapper/7	00:01:28	7
2075664	99	27	25,2	cyclictest	2252697	-21	kworker/u16:0+events_unbound	21:52:13	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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