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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 May 04, 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
1760922	2	94	0,1	sleep7	1760925	-21	tr	20:34:06	7
1792737	2	93	0,1	sleep6	0	-21	swapper/6	20:53:44	6
2209861	2	92	0,1	sleep6	0	-21	swapper/6	23:49:03	6
1587875	99	54	51,2	cyclictest	1784348	-21	kworker/u16:2+events_unbound	20:58:58	4
1587875	99	53	51,2	cyclictest	2217394	-21	kworker/u16:0+events_unbound	23:53:58	4
1587875	99	50	48,2	cyclictest	2134081	-21	kworker/u16:3+events_unbound	23:34:10	4
1587875	99	50	48,2	cyclictest	1659820	-21	kworker/u16:1+events_unbound	20:48:58	4
1587308	2	50	39,7	sleep4	0	-21	swapper/4	19:04:53	4
1587882	99	49	47,2	cyclictest	2059709	-21	kworker/u16:0+events_unbound	22:54:14	5
1587875	99	49	47,2	cyclictest	2038151	-21	kworker/u16:2+flush-8:0	22:49:15	4
1587875	99	49	47,2	cyclictest	1735283	-21	kworker/u16:3+events_unbound	20:38:58	4
1587875	99	49	47,2	cyclictest	1659820	-21	kworker/u16:1+flush-8:0	20:24:07	4
1587875	99	49	46,2	cyclictest	1597470	-21	kworker/u16:2+flush-8:0	19:48:59	4
1587891	99	47	41,5	cyclictest	2314407	-21	latency_hist	00:33:43	7
1587882	99	47	45,2	cyclictest	1597470	-21	kworker/u16:2+events_unbound	19:18:58	5
1587882	99	47	44,2	cyclictest	2038151	-21	kworker/u16:2+flush-8:0	23:23:57	5
1587529	2	47	37,7	sleep5	0	-21	swapper/5	19:07:59	5
1587875	99	46	44,2	cyclictest	2240176	-21	kworker/u16:4+events_unbound	00:04:10	4
1587882	99	42	40,2	cyclictest	2134081	-21	kworker/u16:3+events_unbound	23:18:57	5
1587882	99	42	40,2	cyclictest	1987439	-21	kworker/u16:1+flush-8:0	22:59:12	5
1587882	99	42	39,2	cyclictest	1659820	-21	kworker/u16:1+events_unbound	19:58:58	5
1587875	99	42	40,2	cyclictest	1987439	-21	kworker/u16:1+events_unbound	22:59:11	4
1587875	99	42	40,2	cyclictest	1941685	-21	kworker/u16:0+flush-8:0	22:09:02	4
1587875	99	42	40,2	cyclictest	1941685	-21	kworker/u16:0+events_unbound	22:04:18	4
1587882	99	41	39,2	cyclictest	1869619	-21	kworker/u16:5+events_unbound	22:00:22	5
1587882	99	41	39,2	cyclictest	1833517	-21	kworker/u16:2+flush-8:0	21:14:13	5
1587882	99	41	39,2	cyclictest	1833517	-21	kworker/u16:2+flush-8:0	21:14:13	5
1587882	99	41	39,2	cyclictest	1735283	-21	kworker/u16:3+flush-8:0	20:39:04	5
1587875	99	41	39,2	cyclictest	2217394	-21	kworker/u16:0+events_unbound	00:09:03	4
1587875	99	41	39,2	cyclictest	1869619	-21	kworker/u16:5+events_unbound	21:54:16	4
1587891	99	40	36,3	cyclictest	124	-21	kswapd0	22:49:12	7
1587882	99	40	38,2	cyclictest	1597470	-21	kworker/u16:2+events_unbound	20:19:14	5
1587882	99	40	37,2	cyclictest	1812797	-21	kworker/u16:0+flush-8:0	21:08:57	5
1587875	99	40	38,2	cyclictest	2038151	-21	kworker/u16:2+events_unbound	23:41:55	4
1587369	2	40	5,30	sleep7	0	-21	swapper/7	19:05:45	7
1587882	99	39	37,2	cyclictest	2217394	-21	kworker/u16:0+events_unbound	00:34:10	5
1587882	99	39	37,2	cyclictest	2059709	-21	kworker/u16:0+flush-8:0	23:09:06	5
1587882	99	39	37,2	cyclictest	2038151	-21	kworker/u16:2+events_unbound	23:30:31	5
1587882	99	39	37,2	cyclictest	1869619	-21	kworker/u16:5+flush-8:0	22:14:13	5
1587882	99	39	37,2	cyclictest	1735283	-21	kworker/u16:3+events_unbound	20:34:01	5
1587875	99	39	37,2	cyclictest	1987439	-21	kworker/u16:1+flush-8:0	00:14:12	4
1587882	99	38	36,2	cyclictest	1987439	-21	kworker/u16:1+flush-8:0	22:45:02	5
1587882	99	38	36,2	cyclictest	1869619	-21	kworker/u16:5+events_unbound	21:39:35	5
1587882	99	38	35,2	cyclictest	2038151	-21	kworker/u16:2+events_unbound	23:03:47	5
1587882	99	38	35,2	cyclictest	1597470	-21	kworker/u16:2+events_unbound	20:03:59	5
1587875	99	38	36,2	cyclictest	2134081	-21	kworker/u16:3+flush-8:0	23:19:02	4
1587875	99	38	36,2	cyclictest	1987439	-21	kworker/u16:1+flush-8:0	22:29:10	4
1587875	99	38	36,2	cyclictest	1987439	-21	kworker/u16:1+events_unbound	22:24:59	4
1587875	99	38	36,2	cyclictest	1869619	-21	kworker/u16:5+events_unbound	21:34:12	4
1587882	99	37	35,2	cyclictest	2038151	-21	kworker/u16:2+flush-8:0	22:43:30	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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