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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 Jul 06, 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
3405561	2	60	23,31	sleep7	0	-21	swapper/7	07:04:17	7
3406180	2	59	48,8	sleep4	0	-21	swapper/4	07:04:54	4
3406181	2	51	41,7	sleep5	0	-21	swapper/5	07:04:55	5
3406749	99	48	44,2	cyclictest	3623584	-21	ntpq	08:54:07	7
3406749	99	39	34,4	cyclictest	3839596	-21	latency_hist	10:28:43	7
3406211	2	38	28,7	sleep6	0	-21	swapper/6	07:05:20	6
3406747	99	35	33,2	cyclictest	3396796	-21	kworker/u16:0+events_unbound	07:14:08	6
3406749	99	34	33,0	cyclictest	0	-21	swapper/7	11:14:17	7
3406749	99	33	32,0	cyclictest	0	-21	swapper/7	10:01:19	7
3406747	99	33	31,2	cyclictest	3517484	-21	kworker/u16:3+events_unbound	08:38:57	6
3406747	99	33	31,2	cyclictest	3396796	-21	kworker/u16:0+events_unbound	07:19:11	6
3406749	99	32	29,2	cyclictest	4144648	-21	ssh	12:33:45	7
3406747	99	32	30,2	cyclictest	3776390	-21	kworker/u16:1+events_unbound	10:04:11	6
3406747	99	32	30,2	cyclictest	3776390	-21	kworker/u16:1+events_unbound	10:04:11	6
3406747	99	31	29,2	cyclictest	3439289	-21	kworker/u16:1+events_unbound	07:58:57	6
3406747	99	31	29,2	cyclictest	3439289	-21	kworker/u16:1+events_unbound	07:58:57	6
3406747	99	31	29,2	cyclictest	3396796	-21	kworker/u16:0+events_unbound	07:38:57	6
3406749	99	29	27,1	cyclictest	3644092	-21	diskmemload	09:15:45	7
3406749	99	29	27,1	cyclictest	0	-21	swapper/7	12:29:14	7
3406747	99	29	27,2	cyclictest	3998167	-21	kworker/u16:0+events_unbound	12:19:06	6
3406749	99	28	25,2	cyclictest	3706282	-21	ssh	09:33:54	7
3406749	99	27	23,3	cyclictest	3924985	-21	latency_hist	11:03:43	7
3406747	99	27	25,2	cyclictest	3691000	-21	kworker/u16:0+events_unbound	09:29:06	6
3406749	99	26	24,1	cyclictest	3702336	-21	sh	09:29:09	7
3406749	99	26	23,2	cyclictest	3949292	-21	munin-run	11:13:43	7
3406749	99	26	21,4	cyclictest	650	-21	systemd-journal	07:18:38	7
3406747	99	26	24,2	cyclictest	3912950	-21	kworker/u16:2+events_unbound	11:39:04	6
3406747	99	26	24,2	cyclictest	3691000	-21	kworker/u16:0+events_unbound	09:46:59	6
3406749	99	25	20,4	cyclictest	3973658	-21	latency_hist	11:23:42	7
3406747	99	25	23,2	cyclictest	3912950	-21	kworker/u16:2+events_unbound	12:13:35	6
3406747	99	25	23,2	cyclictest	3912950	-21	kworker/u16:2+events_unbound	12:13:35	6
3406743	99	25	23,2	cyclictest	3998167	-21	kworker/u16:0+flush-8:0	12:23:42	5
3406749	99	24	23,0	cyclictest	0	-21	swapper/7	10:49:18	7
3406749	99	24	23,0	cyclictest	0	-21	swapper/7	10:49:18	7
3406747	99	24	22,2	cyclictest	3691000	-21	kworker/u16:0+events_unbound	09:53:57	6
3406749	99	23	22,0	cyclictest	0	-21	swapper/7	10:08:54	7
3406749	99	23	22,0	cyclictest	0	-21	swapper/7	10:08:54	7
3406749	99	23	22,0	cyclictest	0	-21	swapper/7	09:04:14	7
3406749	99	23	21,1	cyclictest	3644092	-21	diskmemload	11:54:13	7
3406747	99	23	21,2	cyclictest	3778557	-21	kworker/u16:2+events_unbound	10:12:57	6
3406747	99	23	21,2	cyclictest	3778557	-21	kworker/u16:2+events_unbound	10:12:57	6
3406747	99	23	21,2	cyclictest	3691000	-21	kworker/u16:0+events_unbound	09:42:43	6
3406747	99	23	21,2	cyclictest	3615185	-21	kworker/u16:3+events_unbound	09:17:21	6
3406749	99	22	21,0	cyclictest	0	-21	swapper/7	10:44:27	7
3406749	99	22	20,1	cyclictest	3644092	-21	diskmemload	10:53:58	7
3406747	99	22	20,2	cyclictest	4069091	-21	kworker/u16:1+events_unbound	12:18:05	6
3406747	99	22	20,2	cyclictest	3803015	-21	kworker/u16:4+events_unbound	10:21:54	6
3406747	99	22	20,2	cyclictest	3615185	-21	kworker/u16:3+events_unbound	10:16:43	6
3406749	99	21	20,0	cyclictest	0	-21	swapper/7	11:47:42	7
3406749	99	21	20,0	cyclictest	0	-21	swapper/7	10:16:38	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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