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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 100 highest latencies:

System rack0slot2.osadl.org (updated Mon May 25, 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
3971522	2	75	48,8	sleep4	0	-21	swapper/4	19:04:56	4
3971979	99	57	55,2	cyclictest	36210	-21	kworker/u16:1+flush-8:0	21:57:35	6
3962560	2	55	44,7	sleep5	0	-21	swapper/5	19:02:32	5
3971979	99	53	51,2	cyclictest	36210	-21	kworker/u16:1+events_unbound	22:02:47	6
3971979	99	52	50,2	cyclictest	336128	-21	kworker/u16:1+events_unbound	23:32:53	6
3971979	99	51	49,2	cyclictest	4176831	-21	kworker/u16:3+events_unbound	20:57:46	6
3971979	99	50	47,2	cyclictest	3971742	-21	kworker/u16:3+flush-8:0	19:42:46	6
3971979	99	49	47,2	cyclictest	167364	-21	kworker/u16:2+events_unbound	22:27:42	6
3971979	99	49	47,2	cyclictest	167364	-21	kworker/u16:2+events_unbound	22:27:42	6
3971983	99	47	42,4	cyclictest	265424	-21	latency_hist	22:52:20	7
3971979	99	47	45,2	cyclictest	205199	-21	kworker/u16:4+flush-8:0	23:07:45	6
3971979	99	45	43,2	cyclictest	4033380	-21	kworker/u16:2+flush-8:0	21:12:49	6
3971979	99	45	43,2	cyclictest	167364	-21	kworker/u16:2+flush-8:0	22:17:41	6
3971976	99	45	42,2	cyclictest	3952563	-21	kworker/u16:0+events_unbound	19:12:22	5
3971979	99	44	41,2	cyclictest	4063262	-21	kworker/u16:0+events_unbound	21:22:51	6
3971979	99	44	36,8	cyclictest	190730	-21	kworker/u16:1+events_unbound	22:25:14	6
3971979	99	44	36,8	cyclictest	190730	-21	kworker/u16:1+events_unbound	22:25:14	6
3971979	99	43	41,2	cyclictest	226921	-21	kworker/u16:0+events_unbound	22:42:47	6
3971979	99	43	41,2	cyclictest	205199	-21	kworker/u16:4+flush-8:0	22:32:48	6
3971979	99	42	40,2	cyclictest	301851	-21	kworker/u16:3+events_unbound	23:17:48	6
3971979	99	41	39,2	cyclictest	265642	-21	kworker/u16:2+flush-8:0	22:52:48	6
3971976	99	41	36,4	cyclictest	36210	-21	kworker/u16:1+flush-8:0	21:32:21	5
3965167	2	41	3,31	sleep7	0	-21	swapper/7	19:02:42	7
3971979	99	40	38,2	cyclictest	336128	-21	kworker/u16:1+events_unbound	23:31:21	6
3971979	99	39	37,2	cyclictest	421931	-21	kworker/u16:4+events_unbound	00:23:49	6
3971979	99	38	36,2	cyclictest	36210	-21	kworker/u16:1+events_unbound	21:44:07	6
3971979	99	38	36,2	cyclictest	36210	-21	kworker/u16:1+events_unbound	21:44:07	6
3971979	99	38	35,2	cyclictest	3270085	-21	kworker/u16:6+flush-8:0	20:32:36	6
3971976	99	38	35,2	cyclictest	337980	-21	kworker/u16:2+flush-8:0	00:02:41	5
3971979	99	37	35,2	cyclictest	4033380	-21	kworker/u16:2+flush-8:0	21:12:13	6
3971979	99	37	35,2	cyclictest	205199	-21	kworker/u16:4+events_unbound	23:14:54	6
3971979	99	36	34,2	cyclictest	421931	-21	kworker/u16:4+events_unbound	00:05:50	6
3971979	99	36	34,2	cyclictest	337980	-21	kworker/u16:2+events_unbound	23:49:49	6
3971979	99	35	33,2	cyclictest	60465	-21	kworker/u16:2+events_unbound	21:52:49	6
3971979	99	35	33,2	cyclictest	421931	-21	kworker/u16:4+events_unbound	00:13:57	6
3971979	99	35	33,2	cyclictest	337980	-21	kworker/u16:2+flush-8:0	23:58:37	6
3971979	99	35	33,2	cyclictest	337980	-21	kworker/u16:2+events_unbound	23:38:41	6
3971979	99	35	33,2	cyclictest	251977	-21	kworker/u16:1+events_unbound	22:58:15	6
3971979	99	34	32,2	cyclictest	72681	-21	kworker/u16:3+events_unbound	22:16:38	6
3971979	99	34	32,2	cyclictest	480872	-21	kworker/u16:0+events_unbound	00:35:01	6
3971979	99	34	32,2	cyclictest	480872	-21	kworker/u16:0+events_unbound	00:28:25	6
3971979	99	34	32,2	cyclictest	480872	-21	kworker/u16:0+events_unbound	00:28:25	6
3971979	99	34	32,2	cyclictest	444505	-21	kworker/u16:1+events_unbound	00:20:01	6
3971979	99	34	32,2	cyclictest	4063262	-21	kworker/u16:0+events_unbound	21:28:35	6
3971979	99	34	32,2	cyclictest	336128	-21	kworker/u16:1+flush-8:0	23:52:33	6
3971979	99	34	32,2	cyclictest	336128	-21	kworker/u16:1+events_unbound	23:47:13	6
3971979	99	34	32,2	cyclictest	336128	-21	kworker/u16:1+events_unbound	23:47:13	6
3971979	99	34	32,2	cyclictest	3270085	-21	kworker/u16:6+events_unbound	20:22:40	6
3971979	99	34	32,2	cyclictest	251977	-21	kworker/u16:1+events_unbound	22:48:06	6
3971983	99	33	27,5	cyclictest	181079	-21	latency_hist	22:17:20	7
3971979	99	33	31,2	cyclictest	72681	-21	kworker/u16:3+events_unbound	21:33:05	6
3971979	99	33	31,2	cyclictest	60465	-21	kworker/u16:2+events_unbound	21:51:02	6
3971979	99	33	31,2	cyclictest	60465	-21	kworker/u16:2+events_unbound	21:39:34	6
3971979	99	33	31,2	cyclictest	286332	-21	kworker/u16:0+events_unbound	23:06:18	6
3971979	99	33	31,2	cyclictest	286332	-21	kworker/u16:0+events_unbound	23:06:18	6
3971979	99	33	31,2	cyclictest	167364	-21	kworker/u16:2+flush-8:0	22:10:25	6
3971983	99	32	0,30	cyclictest	124	-21	kswapd0	21:57:48	7
3971979	99	32	30,2	cyclictest	444505	-21	kworker/u16:1+events_unbound	00:10:01	6
3971979	99	32	30,2	cyclictest	4063262	-21	kworker/u16:0+flush-8:0	21:17:43	6
3971979	99	31	29,2	cyclictest	337980	-21	kworker/u16:2+events_unbound	23:22:41	6
3971455	2	31	21,7	sleep6	0	-21	swapper/6	19:04:02	6
4148551	2	30	0,1	chrt	4148552	-21	latency_hist	20:37:20	7
3971979	99	30	28,2	cyclictest	239028	-21	kworker/u16:2+events_unbound	22:39:49	6
3971976	99	30	28,2	cyclictest	60465	-21	kworker/u16:2+flush-8:0	21:47:15	5
3971976	99	30	28,2	cyclictest	60465	-21	kworker/u16:2+flush-8:0	21:47:15	5
3971979	99	29	27,2	cyclictest	4063262	-21	kworker/u16:0+events_unbound	19:54:23	6
3971979	99	29	26,2	cyclictest	4033380	-21	kworker/u16:2+events_unbound	19:47:23	6
3971976	99	29	27,2	cyclictest	409611	-21	kworker/u16:0+flush-8:0	23:52:47	5
3971979	99	28	26,2	cyclictest	4033380	-21	kworker/u16:2+events_unbound	20:27:41	6
3971979	99	28	25,2	cyclictest	4033380	-21	kworker/u16:2+flush-8:0	20:37:21	6
3971976	99	28	26,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	19:22:34	5
3971983	99	27	23,3	cyclictest	124	-21	kswapd0	22:56:23	7
3971979	99	27	25,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	19:40:37	6
3971979	99	27	25,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	19:24:31	6
3971976	99	27	25,2	cyclictest	337980	-21	kworker/u16:2+events_unbound	23:26:18	5
3971979	99	26	24,2	cyclictest	4176831	-21	kworker/u16:3+events_unbound	20:54:37	6
3971976	99	26	24,2	cyclictest	337980	-21	kworker/u16:2+flush-8:0	23:57:55	5
3971976	99	26	22,4	cyclictest	3971742	-21	kworker/u16:3+flush-8:0	19:32:20	5
3971983	99	25	20,4	cyclictest	494316	-21	latency_hist	00:27:19	7
3971979	99	25	23,2	cyclictest	4148773	-21	kworker/u16:1+events_unbound	20:42:51	6
3971979	99	25	23,2	cyclictest	3962552	-21	kworker/u16:1+events_unbound	19:08:38	6
3971976	99	25	23,2	cyclictest	4063262	-21	kworker/u16:0+flush-8:0	19:57:43	5
3971976	99	25	22,2	cyclictest	4063262	-21	kworker/u16:0+flush-8:0	21:17:37	5
3971979	99	24	22,2	cyclictest	3962552	-21	kworker/u16:1+events_unbound	19:33:38	6
3971976	99	24	23,1	cyclictest	134233	-21	kworker/u16:0+events_unbound	22:13:24	5
3971979	99	23	21,2	cyclictest	4063262	-21	kworker/u16:0+events_unbound	21:02:38	6
3971979	99	23	21,2	cyclictest	4063262	-21	kworker/u16:0+events_unbound	21:02:38	6
3971979	99	23	21,2	cyclictest	4033380	-21	kworker/u16:2+flush-8:0	20:09:25	6
3971979	99	22	20,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	19:27:49	6
3971979	99	22	20,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	19:14:22	6
3971983	99	21	16,4	cyclictest	635	-21	systemd-journal	21:32:21	7
3971979	99	21	19,2	cyclictest	3971742	-21	kworker/u16:3+events_unbound	20:01:51	6
3971976	99	21	19,2	cyclictest	337980	-21	kworker/u16:2+flush-8:0	23:27:38	5
3971976	99	21	18,2	cyclictest	4033380	-21	kworker/u16:2+flush-8:0	20:27:51	5
3971983	99	20	0,18	cyclictest	0	-21	swapper/7	19:57:42	7
3971976	99	20	18,2	cyclictest	336128	-21	kworker/u16:1+flush-8:0	23:20:08	5
3971983	99	19	15,3	cyclictest	1234	-21	snmpd	20:13:32	7
3971979	99	19	16,2	cyclictest	4033380	-21	kworker/u16:2+events_unbound	20:47:29	6
3971983	99	18	14,3	cyclictest	124	-21	kswapd0	23:25:28	7
3971983	99	18	14,3	cyclictest	1234	-21	snmpd	19:10:34	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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