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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 Tue Mar 17, 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
845026	2	59	48,7	sleep6	0	-21	swapper/6	07:00:42	6
845523	99	53	51,2	cyclictest	1321146	-21	kworker/u16:4+events_unbound	11:13:39	5
845536	99	50	44,5	cyclictest	887382	-21	latency_hist	07:23:39	7
845519	99	50	46,3	cyclictest	1415128	-21	kworker/u16:3+flush-8:0	11:43:38	4
845536	99	48	42,5	cyclictest	954297	-21	latency_hist	07:58:38	7
845214	2	47	37,7	sleep5	0	-21	swapper/5	07:03:22	5
845528	99	45	43,2	cyclictest	762722	-21	kworker/u16:2+flush-8:0	07:43:39	6
845528	99	45	43,2	cyclictest	1440001	-21	kworker/u16:1+events_unbound	11:33:13	6
845202	2	45	35,7	sleep4	0	-21	swapper/4	07:03:13	4
845528	99	44	42,2	cyclictest	1475411	-21	kworker/u16:1+events_unbound	12:05:11	6
845528	99	44	42,2	cyclictest	1475411	-21	kworker/u16:1+events_unbound	12:05:11	6
845536	99	43	41,1	cyclictest	1078773	-21	diskmemload	09:14:16	7
845523	99	43	41,2	cyclictest	1452971	-21	kworker/u16:2+events_unbound	12:16:01	5
845523	99	43	41,2	cyclictest	1415128	-21	kworker/u16:3+events_unbound	11:30:00	5
845523	99	43	41,2	cyclictest	1342347	-21	kworker/u16:5+events_unbound	11:02:40	5
845523	99	43	41,2	cyclictest	1321146	-21	kworker/u16:4+flush-8:0	10:54:05	5
845523	99	43	41,2	cyclictest	1031293	-21	kworker/u16:0+events_unbound	09:21:32	5
845528	99	42	40,2	cyclictest	1296090	-21	kworker/u16:2+events_unbound	10:35:01	6
845528	99	42	40,2	cyclictest	1126116	-21	kworker/u16:2+events_unbound	09:31:32	6
845528	99	42	40,2	cyclictest	1011445	-21	kworker/u16:1+events_unbound	09:12:33	6
845523	99	42	40,2	cyclictest	1200044	-21	kworker/u16:0+events_unbound	10:28:03	5
845523	99	42	40,2	cyclictest	1200044	-21	kworker/u16:0+events_unbound	09:59:56	5
845523	99	42	40,2	cyclictest	1163462	-21	kworker/u16:2+events_unbound	09:52:48	5
845523	99	42	40,2	cyclictest	1151115	-21	kworker/u16:1+events_unbound	09:54:36	5
845519	99	42	39,2	cyclictest	1499618	-21	kworker/u16:4+events_unbound	12:18:55	4
845536	99	41	40,0	cyclictest	0	-21	swapper/7	11:32:19	7
845536	99	41	40,0	cyclictest	0	-21	swapper/7	10:59:48	7
845536	99	41	36,4	cyclictest	1021300	-21	latency_hist	08:33:38	7
845528	99	41	39,2	cyclictest	1440001	-21	kworker/u16:1+events_unbound	11:36:48	6
845528	99	41	39,2	cyclictest	1296090	-21	kworker/u16:2+events_unbound	11:08:28	6
845528	99	41	39,2	cyclictest	1163462	-21	kworker/u16:2+events_unbound	10:25:01	6
845523	99	41	39,2	cyclictest	1415128	-21	kworker/u16:3+events_unbound	11:34:12	5
845523	99	41	39,2	cyclictest	1296090	-21	kworker/u16:2+events_unbound	10:35:44	5
845523	99	41	39,2	cyclictest	1151115	-21	kworker/u16:1+events_unbound	09:47:12	5
845523	99	41	39,2	cyclictest	1011445	-21	kworker/u16:1+events_unbound	09:17:44	5
845536	99	40	38,1	cyclictest	1537787	-21	ssh	12:13:00	7
845536	99	40	38,1	cyclictest	1078773	-21	diskmemload	10:54:36	7
845536	99	40	35,4	cyclictest	1381265	-21	latency_hist	11:08:38	7
845528	99	40	38,2	cyclictest	1151115	-21	kworker/u16:1+events_unbound	10:20:29	6
845528	99	40	38,2	cyclictest	1151115	-21	kworker/u16:1+events_unbound	09:51:15	6
845523	99	40	38,2	cyclictest	1415128	-21	kworker/u16:3+events_unbound	11:42:03	5
845523	99	40	38,2	cyclictest	1296090	-21	kworker/u16:2+events_unbound	11:10:16	5
845536	99	39	37,1	cyclictest	1404664	-21	ssh	11:17:16	7
845536	99	39	37,1	cyclictest	1186876	-21	ssh	09:47:08	7
845528	99	39	37,2	cyclictest	1452971	-21	kworker/u16:2+events_unbound	11:40:00	6
845528	99	39	37,2	cyclictest	1163462	-21	kworker/u16:2+events_unbound	09:44:32	6
845528	99	39	37,2	cyclictest	1151115	-21	kworker/u16:1+events_unbound	09:37:32	6
845528	99	39	37,2	cyclictest	1031293	-21	kworker/u16:0+events_unbound	09:20:32	6
845523	99	39	37,2	cyclictest	1499618	-21	kworker/u16:4+events_unbound	12:07:59	5
845523	99	39	37,2	cyclictest	1499618	-21	kworker/u16:4+events_unbound	12:07:59	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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