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 Fri Jul 24, 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
2139768	2	95	0,0	sleep6	0	-21	swapper/6	21:44:20	6
1816895	2	53	19,29	sleep7	0	-21	swapper/7	19:07:01	7
1816773	2	42	32,7	sleep5	0	-21	swapper/5	19:05:22	5
1817346	99	40	37,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:14:22	6
1817342	99	39	37,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	00:09:19	5
1817342	99	38	36,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:27:35	5
1817342	99	38	36,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:13:43	5
1817340	99	38	35,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	23:39:23	4
1817342	99	37	35,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:53:47	5
1817342	99	37	35,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:53:47	5
1817340	99	37	35,2	cyclictest	2100791	-21	kworker/u16:2+flush-8:0	21:49:55	4
1817340	99	37	35,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:57:12	4
1817342	99	36	34,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:23:56	5
1817342	99	36	34,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	23:40:35	5
1817342	99	36	34,2	cyclictest	2249608	-21	kworker/u16:0+events_unbound	22:57:35	5
1817342	99	36	34,2	cyclictest	2188511	-21	kworker/u16:4+events_unbound	22:14:38	5
1817342	99	36	34,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	00:16:07	5
1817342	99	36	34,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	00:12:19	5
1817342	99	36	34,2	cyclictest	1995907	-21	kworker/u16:4+events_unbound	21:12:47	5
1817340	99	36	34,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:56:51	4
1817342	99	35	33,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	00:37:27	5
1817342	99	35	33,2	cyclictest	2298584	-21	kworker/u16:3+flush-8:0	23:14:03	5
1817342	99	35	33,2	cyclictest	2261766	-21	kworker/u16:2+events_unbound	22:42:36	5
1817342	99	35	33,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:28:32	5
1817342	99	35	33,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:28:32	5
1817342	99	35	33,2	cyclictest	2188512	-21	kworker/u16:5+events_unbound	22:08:03	5
1817342	99	35	33,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	22:01:07	5
1817342	99	35	33,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:46:03	5
1817342	99	35	33,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:48:11	5
1817340	99	35	33,2	cyclictest	2249608	-21	kworker/u16:0+events_unbound	22:52:11	4
1817340	99	35	33,2	cyclictest	2249608	-21	kworker/u16:0+events_unbound	22:32:19	4
1817340	99	35	33,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:35:48	4
1817340	99	35	33,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:55:16	4
1817340	99	35	33,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:46:35	4
1817340	99	35	33,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:19:44	4
1817340	99	35	32,2	cyclictest	2359224	-21	kworker/u16:0+events_unbound	23:29:03	4
1816921	2	35	25,7	sleep6	0	-21	swapper/6	19:07:24	6
1817346	99	34	32,2	cyclictest	1878927	-21	kworker/u16:3+flush-8:0	19:44:21	6
1817346	99	34	30,3	cyclictest	2088348	-21	kworker/u16:1+flush-8:0	22:49:20	6
1817342	99	34	32,2	cyclictest	2456929	-21	kworker/u16:4+flush-8:0	23:55:11	5
1817342	99	34	32,2	cyclictest	2417679	-21	kworker/u16:2+flush-8:0	00:02:31	5
1817342	99	34	32,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	23:39:03	5
1817342	99	34	32,2	cyclictest	2359224	-21	kworker/u16:0+events_unbound	23:32:11	5
1817342	99	34	32,2	cyclictest	2298584	-21	kworker/u16:3+events_unbound	23:06:27	5
1817342	99	34	32,2	cyclictest	2249608	-21	kworker/u16:0+events_unbound	22:51:59	5
1817342	99	34	32,2	cyclictest	2249608	-21	kworker/u16:0+events_unbound	22:38:32	5
1817342	99	34	32,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:22:03	5
1817342	99	34	32,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	23:03:23	5
1817342	99	34	32,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	21:53:12	5
1817342	99	34	32,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	00:30:47	5
1817342	99	34	32,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	00:30:47	5
1817340	99	34	32,2	cyclictest	2541500	-21	kworker/u16:0+events_unbound	00:29:44	4
1817340	99	34	32,2	cyclictest	2541500	-21	kworker/u16:0+events_unbound	00:29:44	4
1817340	99	34	32,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	23:37:51	4
1817340	99	34	32,2	cyclictest	2188511	-21	kworker/u16:4+events_unbound	22:23:08	4
1817340	99	34	32,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	21:31:03	4
1817340	99	34	32,2	cyclictest	1804025	-21	kworker/u16:2+events_unbound	21:12:00	4
1817346	99	33	31,2	cyclictest	1995907	-21	kworker/u16:4+events_unbound	20:59:43	6
1817342	99	33	31,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:46:43	5
1817342	99	33	31,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:46:43	5
1817342	99	33	31,2	cyclictest	2063114	-21	kworker/u16:0+events_unbound	21:30:12	5
1817340	99	33	31,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:21:00	4
1817340	99	33	31,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:11:16	4
1817340	99	33	31,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:46:16	4
1817340	99	33	31,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:46:16	4
1817340	99	33	31,2	cyclictest	2100791	-21	kworker/u16:2+flush-8:0	21:41:23	4
1817340	99	33	31,2	cyclictest	2088348	-21	kworker/u16:1+flush-8:0	23:18:19	4
1817340	99	33	31,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	00:18:38	4
1817340	99	33	31,2	cyclictest	1995907	-21	kworker/u16:4+events_unbound	21:15:31	4
1817346	99	32	30,2	cyclictest	2493837	-21	kworker/u16:3+events_unbound	00:24:43	6
1817346	99	32	30,2	cyclictest	1888725	-21	kworker/u16:1+flush-8:0	20:19:16	6
1817342	99	32	30,2	cyclictest	2359224	-21	kworker/u16:0+events_unbound	23:20:59	5
1817342	99	32	30,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:30:43	5
1817342	99	32	30,2	cyclictest	1804025	-21	kworker/u16:2+flush-8:0	21:19:12	5
1817340	99	32	30,2	cyclictest	2432730	-21	kworker/u16:0+events_unbound	00:08:08	4
1817340	99	32	30,2	cyclictest	2432730	-21	kworker/u16:0+events_unbound	00:00:47	4
1817340	99	32	30,2	cyclictest	2322803	-21	kworker/u16:5+events_unbound	23:03:31	4
1817340	99	32	30,2	cyclictest	2188511	-21	kworker/u16:4+events_unbound	22:15:56	4
1817340	99	32	30,2	cyclictest	2100791	-21	kworker/u16:2+flush-8:0	21:37:48	4
1817340	99	32	30,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:40:08	4
1817340	99	32	30,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:11:07	4
1817340	99	32	29,2	cyclictest	2322803	-21	kworker/u16:5+flush-8:0	23:29:31	4
1816910	2	32	21,8	sleep4	0	-21	swapper/4	19:07:14	4
1817346	99	31	29,2	cyclictest	2088348	-21	kworker/u16:1+flush-8:0	22:49:55	6
1817342	99	31	29,2	cyclictest	2113438	-21	kworker/u16:3+events_unbound	21:57:12	5
1817342	99	31	29,2	cyclictest	2100791	-21	kworker/u16:2+events_unbound	21:35:23	5
1817342	99	31	29,2	cyclictest	1995907	-21	kworker/u16:4+events_unbound	21:21:32	5
1817342	99	31	29,2	cyclictest	1946957	-21	kworker/u16:3+events_unbound	20:27:48	5
1817340	99	31	29,2	cyclictest	2417679	-21	kworker/u16:2+events_unbound	00:27:39	4
1817340	99	31	29,2	cyclictest	2298584	-21	kworker/u16:3+events_unbound	23:14:08	4
1817340	99	31	29,2	cyclictest	2298584	-21	kworker/u16:3+events_unbound	23:08:28	4
1817340	99	31	29,2	cyclictest	2088348	-21	kworker/u16:1+events_unbound	22:47:04	4
1817340	99	31	29,2	cyclictest	1995907	-21	kworker/u16:4+events_unbound	21:25:27	4
1817342	99	30	28,2	cyclictest	2063114	-21	kworker/u16:0+events_unbound	21:29:08	5
1817342	99	30	28,2	cyclictest	1816828	-21	kworker/u16:0+events_unbound	19:27:48	5
1817340	99	30	28,2	cyclictest	2322803	-21	kworker/u16:5+events_unbound	23:54:04	4
1817340	99	30	28,2	cyclictest	2322803	-21	kworker/u16:5+events_unbound	23:54:04	4
1817340	99	30	28,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:28:48	4
1817340	99	30	28,2	cyclictest	2188513	-21	kworker/u16:6+events_unbound	22:28:48	4
1817340	99	30	28,2	cyclictest	1995907	-21	kworker/u16:4+flush-8:0	21:20:12	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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