OSADL QA Farm on Real-time of Mainline Linux

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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 Thu Jun 18, 2026 12:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1262921	2	58	48,7	sleep4	0	-21	swapper/4	07:07:21	4
1262913	2	54	43,8	sleep5	0	-21	swapper/5	07:07:14	5
1262841	2	54	19,30	sleep7	0	-21	swapper/7	07:06:11	7
1262990	2	40	29,8	sleep6	0	-21	swapper/6	07:08:19	6
1263377	99	35	28,7	cyclictest	1856609	-21	kworker/u16:0+events_unbound	12:27:25	6
1263377	99	34	32,2	cyclictest	1489910	-21	kworker/u16:3+events_unbound	09:39:54	6
1263377	99	33	31,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:36:54	6
1263377	99	32	30,2	cyclictest	1773407	-21	kworker/u16:2+events_unbound	11:12:34	6
1263377	99	32	25,6	cyclictest	1394083	-21	kworker/u16:0+events_unbound	09:14:57	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+flush-8:0	10:32:50	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:33:54	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:42:30	6
1263377	99	31	29,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	11:01:43	6
1263377	99	31	29,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	09:49:58	6
1263377	99	31	29,2	cyclictest	1526620	-21	kworker/u16:6+events_unbound	09:32:09	6
1263377	99	31	29,2	cyclictest	1523060	-21	kworker/u16:2+flush-8:0	09:40:49	6
1263377	99	31	28,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	11:59:57	6
1263377	99	30	28,2	cyclictest	1897112	-21	kworker/u16:4+flush-8:0	12:20:25	6
1263377	99	30	28,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:56:42	6
1263377	99	30	28,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:56:42	6
1263377	99	30	28,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:09:30	6
1263377	99	30	28,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:24:10	6
1263377	99	30	28,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:04:19	6
1263377	99	30	28,2	cyclictest	1526620	-21	kworker/u16:6+events_unbound	09:22:38	6
1263372	99	30	27,2	cyclictest	1301864	-21	kworker/u16:1+flush-8:0	07:35:11	4
1263381	99	29	0,27	cyclictest	1748643	-21	dnf	10:50:01	7
1263377	99	29	27,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	12:33:34	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:46:22	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:44:46	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:28:31	6
1263377	99	29	27,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	10:19:05	6
1263377	99	29	27,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:54:58	6
1263377	99	29	27,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:54:02	6
1263374	99	29	26,2	cyclictest	1301864	-21	kworker/u16:1+events_unbound	08:00:10	5
1263377	99	28	26,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	12:13:30	6
1263377	99	28	26,2	cyclictest	1723682	-21	kworker/u16:4+events_unbound	10:48:59	6
1263377	99	28	26,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:39:30	6
1263377	99	28	26,2	cyclictest	1523060	-21	kworker/u16:2+flush-8:0	09:25:54	6
1263377	99	28	25,2	cyclictest	1209647	-21	kworker/u16:0+events_unbound	07:09:58	6
1263377	99	27	25,2	cyclictest	1971299	-21	kworker/u16:1+events_unbound	12:36:26	6
1263377	99	27	25,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	12:17:50	6
1263377	99	27	25,2	cyclictest	1810565	-21	kworker/u16:4+events_unbound	11:16:18	6
1263377	99	27	25,2	cyclictest	1773407	-21	kworker/u16:2+flush-8:0	11:22:50	6
1263377	99	27	25,2	cyclictest	1773407	-21	kworker/u16:2+events_unbound	11:08:55	6
1263377	99	27	25,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:53:46	6
1263372	99	27	25,2	cyclictest	1526620	-21	kworker/u16:6+flush-8:0	09:39:55	4
1263377	99	26	24,2	cyclictest	1897112	-21	kworker/u16:4+events_unbound	12:07:11	6
1263374	99	26	23,2	cyclictest	1856609	-21	kworker/u16:0+flush-8:0	11:50:13	5
1263377	99	25	23,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	09:48:26	6
1263377	99	25	23,2	cyclictest	1523060	-21	kworker/u16:2+events_unbound	09:57:35	6
1263377	99	25	23,2	cyclictest	1523060	-21	kworker/u16:2+events_unbound	09:57:35	6
1263372	99	25	23,2	cyclictest	1773407	-21	kworker/u16:2+events_unbound	11:12:36	4
1263377	99	24	22,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	10:12:59	6
1263372	99	24	22,2	cyclictest	1723682	-21	kworker/u16:4+events_unbound	10:45:02	4
1263372	99	24	22,2	cyclictest	1634583	-21	kworker/u16:3+flush-8:0	10:40:25	4
1263377	99	23	21,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:26:07	6
1263377	99	23	21,2	cyclictest	1345157	-21	kworker/u16:2+events_unbound	08:15:26	6
1263377	99	23	20,2	cyclictest	1301864	-21	kworker/u16:1+flush-8:0	07:50:06	6
1263377	99	23	20,2	cyclictest	1301864	-21	kworker/u16:1+flush-8:0	07:50:06	6
1263372	99	23	21,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	11:55:39	4
1263372	99	23	21,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	11:55:39	4
1263372	99	23	21,2	cyclictest	1432933	-21	kworker/u16:2+flush-8:0	08:39:56	4
1263377	99	22	18,3	cyclictest	1432933	-21	kworker/u16:2+events_unbound	09:00:13	6
1263374	99	22	20,2	cyclictest	1897112	-21	kworker/u16:4+flush-8:0	12:25:18	5
1263374	99	22	20,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	10:25:28	5
1263372	99	22	20,2	cyclictest	1575398	-21	kworker/u16:0+flush-8:0	10:23:22	4
1263372	99	22	20,2	cyclictest	1489910	-21	kworker/u16:3+events_unbound	09:29:32	4
1263372	99	22	20,2	cyclictest	1209647	-21	kworker/u16:0+flush-8:0	07:15:01	4
1263377	99	21	19,2	cyclictest	1489910	-21	kworker/u16:3+events_unbound	09:14:29	6
1263377	99	21	19,2	cyclictest	1432933	-21	kworker/u16:2+events_unbound	08:49:03	6
1263377	99	21	19,2	cyclictest	1394083	-21	kworker/u16:0+events_unbound	08:49:58	6
1263377	99	21	19,2	cyclictest	1264812	-21	kworker/u16:4+events_unbound	07:25:03	6
1263377	99	21	19,2	cyclictest	1243848	-21	kworker/u16:2+events_unbound	07:36:07	6
1263374	99	21	19,2	cyclictest	1810565	-21	kworker/u16:4+flush-8:0	11:15:18	5
1263372	99	21	19,2	cyclictest	1995995	-21	kworker/u16:3+flush-8:0	12:35:16	4
1263372	99	21	19,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:30:03	4
1263372	99	21	19,2	cyclictest	1394083	-21	kworker/u16:0+flush-8:0	09:14:55	4
1263374	99	20	18,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:55:08	5
1263374	99	20	18,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:55:08	5
1263374	99	20	18,2	cyclictest	1634583	-21	kworker/u16:3+flush-8:0	10:40:10	5
1263374	99	20	18,2	cyclictest	1575399	-21	kworker/u16:1+flush-8:0	10:45:30	5
1263374	99	20	18,2	cyclictest	1575398	-21	kworker/u16:0+flush-8:0	11:09:50	5
1263374	99	20	18,2	cyclictest	1526620	-21	kworker/u16:6+flush-8:0	09:25:21	5
1263374	99	20	17,3	cyclictest	1575399	-21	kworker/u16:1+flush-8:0	09:50:12	5
1263372	99	20	18,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	11:45:02	4
1263372	99	20	18,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:35:39	4
1263372	99	20	18,2	cyclictest	1575399	-21	kworker/u16:1+flush-8:0	09:40:05	4
1263372	99	20	18,2	cyclictest	1209647	-21	kworker/u16:0+events_unbound	07:55:03	4
1263374	99	19	17,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:30:23	5
1263374	99	19	17,2	cyclictest	1264812	-21	kworker/u16:4+flush-8:0	07:20:26	5
1263372	99	19	17,2	cyclictest	1770715	-21	kworker/u16:1+events_unbound	11:20:09	4
1263372	99	19	17,2	cyclictest	1575399	-21	kworker/u16:1+flush-8:0	10:25:34	4
1263372	99	19	17,2	cyclictest	1411958	-21	kworker/u16:1+flush-8:0	08:50:17	4
1263372	99	19	17,2	cyclictest	1373547	-21	kworker/u16:4+events_unbound	08:25:03	4
1263372	99	19	17,2	cyclictest	1209647	-21	kworker/u16:0+flush-8:0	07:45:21	4
1263381	99	18	16,1	cyclictest	0	-21	swapper/7	07:16:57	7
1263381	99	18	0,17	cyclictest	0	-21	swapper/7	08:40:19	7
1263377	99	18	16,2	cyclictest	1394083	-21	kworker/u16:0+events_unbound	08:20:53	6
1263377	99	18	16,2	cyclictest	1345157	-21	kworker/u16:2+events_unbound	07:57:51	6
1263374	99	18	16,2	cyclictest	1366672	-21	kworker/u16:3+flush-8:0	08:10:10	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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