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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 Sat Aug 22, 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
107052	2	59	48,7	sleep4	0	-21	swapper/4	07:04:48	4
107182	2	57	22,30	sleep7	0	-21	swapper/7	07:06:36	7
107550	99	48	43,4	cyclictest	662157	-21	latency_hist	11:17:26	7
107550	99	47	42,4	cyclictest	649869	-21	latency_hist	11:12:27	7
107546	99	45	41,3	cyclictest	660557	-21	kworker/u16:0+events_unbound	11:16:19	6
107236	2	45	35,7	sleep5	0	-21	swapper/5	07:07:22	5
107550	99	40	29,1	cyclictest	772114	-21	ssh	12:02:25	7
107550	99	39	34,4	cyclictest	344413	-21	diskmemload	11:49:52	7
107539	99	39	36,2	cyclictest	53191	-21	kworker/u16:0+events_unbound	07:27:29	4
107550	99	38	36,1	cyclictest	344413	-21	diskmemload	09:29:41	7
107550	99	38	36,1	cyclictest	0	-21	swapper/7	11:37:16	7
107550	99	38	34,3	cyclictest	794791	-21	ssh	12:09:13	7
107539	99	38	36,2	cyclictest	796970	-21	kworker/u16:4+events_unbound	12:34:08	4
107550	99	37	36,0	cyclictest	0	-21	swapper/7	10:47:28	7
107546	99	37	35,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	10:46:12	6
107546	99	37	35,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	10:46:12	6
107546	99	37	35,2	cyclictest	188811	-21	kworker/u16:3+events_unbound	08:02:28	6
107539	99	36	34,2	cyclictest	661562	-21	kworker/u16:5+events_unbound	11:50:53	4
107550	99	35	34,0	cyclictest	0	-21	swapper/7	10:55:09	7
107546	99	35	33,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	10:41:05	6
107546	99	35	33,2	cyclictest	442653	-21	kworker/u16:4+events_unbound	10:24:22	6
107542	99	35	33,2	cyclictest	587664	-21	kworker/u16:2+flush-8:0	10:52:52	5
107542	99	35	33,2	cyclictest	542176	-21	kworker/u16:0+events_unbound	10:47:44	5
107542	99	35	33,2	cyclictest	405486	-21	kworker/u16:2+flush-8:0	09:47:22	5
107539	99	35	33,2	cyclictest	818585	-21	kworker/u16:0+events_unbound	12:32:05	4
107539	99	35	33,2	cyclictest	587664	-21	kworker/u16:2+events_unbound	10:59:21	4
107539	99	35	33,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	10:48:52	4
107539	99	35	33,2	cyclictest	405486	-21	kworker/u16:2+events_unbound	10:07:28	4
107539	99	35	33,2	cyclictest	405486	-21	kworker/u16:2+events_unbound	09:58:42	4
107539	99	35	32,2	cyclictest	711613	-21	kworker/u16:3+events_unbound	12:02:27	4
107539	99	35	32,2	cyclictest	711613	-21	kworker/u16:3+events_unbound	12:02:27	4
107539	99	35	32,2	cyclictest	661562	-21	kworker/u16:5+flush-8:0	11:29:45	4
107539	99	35	32,2	cyclictest	149837	-21	kworker/u16:2+flush-8:0	07:37:29	4
107550	99	34	33,0	cyclictest	0	-21	swapper/7	11:03:53	7
107542	99	34	32,2	cyclictest	661561	-21	kworker/u16:4+events_unbound	11:20:24	5
107539	99	34	32,2	cyclictest	587664	-21	kworker/u16:2+events_unbound	10:53:00	4
107539	99	34	32,2	cyclictest	526293	-21	kworker/u16:2+events_unbound	10:29:49	4
107539	99	34	32,2	cyclictest	442652	-21	kworker/u16:3+flush-8:0	09:55:33	4
107550	99	33	32,0	cyclictest	0	-21	swapper/7	11:20:16	7
107550	99	33	32,0	cyclictest	0	-21	swapper/7	10:58:13	7
107550	99	33	32,0	cyclictest	0	-21	swapper/7	09:40:01	7
107550	99	33	31,1	cyclictest	783132	-21	ssh	12:05:13	7
107550	99	33	31,1	cyclictest	783132	-21	ssh	12:05:13	7
107539	99	33	31,2	cyclictest	769936	-21	kworker/u16:2+events_unbound	12:09:05	4
107539	99	33	31,2	cyclictest	735687	-21	kworker/u16:1+events_unbound	11:59:21	4
107539	99	33	31,2	cyclictest	711613	-21	kworker/u16:3+events_unbound	12:15:48	4
107539	99	33	31,2	cyclictest	709289	-21	kworker/u16:0+events_unbound	11:37:04	4
107539	99	33	31,2	cyclictest	660557	-21	kworker/u16:0+events_unbound	11:25:44	4
107539	99	33	31,2	cyclictest	660557	-21	kworker/u16:0+events_unbound	11:25:44	4
107539	99	33	31,2	cyclictest	542176	-21	kworker/u16:0+events_unbound	10:36:53	4
107539	99	33	31,2	cyclictest	417854	-21	kworker/u16:0+flush-8:0	10:18:56	4
107550	99	32	31,0	cyclictest	0	-21	swapper/7	12:34:24	7
107550	99	32	31,0	cyclictest	0	-21	swapper/7	10:23:20	7
107550	99	32	31,0	cyclictest	0	-21	swapper/7	10:00:49	7
107550	99	32	30,1	cyclictest	344413	-21	diskmemload	11:29:09	7
107550	99	32	30,1	cyclictest	0	-21	swapper/7	12:29:29	7
107550	99	32	30,1	cyclictest	0	-21	swapper/7	12:14:32	7
107546	99	32	30,2	cyclictest	587664	-21	kworker/u16:2+events_unbound	10:58:48	6
107546	99	32	30,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	10:50:02	6
107542	99	32	29,2	cyclictest	379896	-21	kworker/u16:0+events_unbound	09:27:36	5
107539	99	32	30,2	cyclictest	711613	-21	kworker/u16:3+events_unbound	11:41:44	4
107539	99	32	30,2	cyclictest	661561	-21	kworker/u16:4+flush-8:0	11:18:09	4
107539	99	32	30,2	cyclictest	542176	-21	kworker/u16:0+events_unbound	10:38:17	4
107539	99	32	30,2	cyclictest	442653	-21	kworker/u16:4+events_unbound	10:17:01	4
107539	99	32	30,2	cyclictest	417854	-21	kworker/u16:0+events_unbound	10:03:53	4
107539	99	32	30,2	cyclictest	417854	-21	kworker/u16:0+events_unbound	10:03:53	4
107539	99	32	30,2	cyclictest	417854	-21	kworker/u16:0+events_unbound	09:50:18	4
107539	99	32	30,2	cyclictest	405486	-21	kworker/u16:2+flush-8:0	09:46:41	4
107539	99	32	30,2	cyclictest	379896	-21	kworker/u16:0+events_unbound	09:31:13	4
107539	99	32	30,2	cyclictest	334392	-21	kworker/u16:4+events_unbound	09:16:32	4
107539	99	32	29,2	cyclictest	709289	-21	kworker/u16:0+flush-8:0	11:43:40	4
107550	99	31	30,0	cyclictest	0	-21	swapper/7	12:19:48	7
107550	99	31	30,0	cyclictest	0	-21	swapper/7	10:31:05	7
107550	99	31	30,0	cyclictest	0	-21	swapper/7	10:20:02	7
107550	99	31	29,1	cyclictest	722355	-21	ssh	11:40:33	7
107546	99	31	29,2	cyclictest	418245	-21	kworker/u16:5+events_unbound	09:38:13	6
107542	99	31	29,2	cyclictest	735687	-21	kworker/u16:1+flush-8:0	12:00:08	5
107542	99	31	29,2	cyclictest	392786	-21	kworker/u16:1+flush-8:0	09:35:25	5
107539	99	31	29,2	cyclictest	711613	-21	kworker/u16:3+events_unbound	11:54:28	4
107539	99	31	29,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	11:14:01	4
107539	99	31	29,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	11:11:56	4
107539	99	31	29,2	cyclictest	513996	-21	kworker/u16:1+events_unbound	10:23:16	4
107539	99	31	29,2	cyclictest	314922	-21	kworker/u16:2+flush-8:0	09:18:41	4
107016	2	31	7,7	sleep6	0	-21	swapper/6	07:04:18	6
107550	99	30	29,0	cyclictest	0	-21	swapper/7	12:24:12	7
107550	99	30	29,0	cyclictest	0	-21	swapper/7	10:33:04	7
107550	99	30	29,0	cyclictest	0	-21	swapper/7	10:12:04	7
107550	99	30	29,0	cyclictest	0	-21	swapper/7	09:35:04	7
107546	99	30	28,2	cyclictest	818585	-21	kworker/u16:0+events_unbound	12:24:40	6
107546	99	30	28,2	cyclictest	562590	-21	kworker/u16:1+events_unbound	11:09:21	6
107546	99	30	28,2	cyclictest	418245	-21	kworker/u16:5+events_unbound	09:44:40	6
107546	99	30	28,2	cyclictest	285150	-21	kworker/u16:0+flush-8:0	08:52:54	6
107542	99	30	28,2	cyclictest	711613	-21	kworker/u16:3+flush-8:0	12:20:37	5
107539	99	30	28,2	cyclictest	635818	-21	kworker/u16:0+events_unbound	11:05:44	4
107539	99	30	28,2	cyclictest	587664	-21	kworker/u16:2+events_unbound	10:45:25	4
107539	99	30	28,2	cyclictest	587664	-21	kworker/u16:2+events_unbound	10:45:25	4
107539	99	30	28,2	cyclictest	314922	-21	kworker/u16:2+events_unbound	09:23:32	4
107539	99	30	28,2	cyclictest	314922	-21	kworker/u16:2+events_unbound	09:23:32	4
107550	99	29	28,0	cyclictest	0	-21	swapper/7	11:56:45	7
107550	99	29	28,0	cyclictest	0	-21	swapper/7	11:43:12	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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