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 Mon Jun 22, 2026 00:43:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1594043	2	60	49,7	sleep4	0	-21	swapper/4	19:05:37	4
1594026	2	50	39,7	sleep5	0	-21	swapper/5	19:05:22	5
1594207	2	43	2,36	sleep7	0	-21	swapper/7	19:07:56	7
1594605	99	41	38,2	cyclictest	2271570	-21	kworker/u16:3+events_unbound	00:34:43	6
1594605	99	38	36,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:04:43	6
1594602	99	38	36,2	cyclictest	2185883	-21	kworker/u16:3+events_unbound	23:46:56	5
1594602	99	38	36,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:01:32	5
1594602	99	37	35,2	cyclictest	2271570	-21	kworker/u16:3+events_unbound	00:28:20	5
1594602	99	37	35,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:11:07	5
1594602	99	36	34,2	cyclictest	2222739	-21	kworker/u16:4+events_unbound	00:13:48	5
1594602	99	36	34,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:21:00	5
1594602	99	36	34,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:11:08	5
1594602	99	36	34,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	22:54:04	5
1594602	99	36	34,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	22:31:36	5
1594602	99	36	34,2	cyclictest	1822432	-21	kworker/u16:0+events_unbound	21:24:16	5
1594605	99	35	33,2	cyclictest	2027551	-21	kworker/u16:4+flush-8:0	22:45:07	6
1594602	99	35	33,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	23:58:47	5
1594602	99	35	33,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:39:11	5
1594602	99	35	33,2	cyclictest	1991019	-21	kworker/u16:0+events_unbound	22:26:04	5
1594605	99	34	32,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:15:36	6
1594605	99	34	32,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	21:41:11	6
1594605	99	34	32,2	cyclictest	1811992	-21	kworker/u16:3+events_unbound	21:51:57	6
1594602	99	34	32,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:08:32	5
1594602	99	34	32,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:25:32	5
1594602	99	34	32,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:16:39	5
1594602	99	34	32,2	cyclictest	1991019	-21	kworker/u16:0+flush-8:0	22:58:36	5
1594602	99	34	32,2	cyclictest	1942249	-21	kworker/u16:1+flush-8:0	22:08:36	5
1594602	99	34	32,2	cyclictest	1904770	-21	kworker/u16:0+events_unbound	21:47:45	5
1594602	99	34	32,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	21:31:16	5
1594602	99	34	32,2	cyclictest	1811992	-21	kworker/u16:3+flush-8:0	22:01:56	5
1594602	99	34	32,2	cyclictest	1521230	-21	kworker/u16:4+events_unbound	19:10:20	5
1594605	99	33	31,2	cyclictest	2271570	-21	kworker/u16:3+events_unbound	00:23:52	6
1594605	99	33	31,2	cyclictest	2051929	-21	kworker/u16:2+events_unbound	22:44:08	6
1594605	99	33	31,2	cyclictest	2051929	-21	kworker/u16:2+events_unbound	22:44:08	6
1594605	99	33	31,2	cyclictest	2003225	-21	kworker/u16:2+events_unbound	22:23:51	6
1594602	99	33	31,2	cyclictest	2247982	-21	kworker/u16:1+events_unbound	00:02:07	5
1594602	99	33	31,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	23:39:40	5
1594602	99	33	31,2	cyclictest	2124967	-21	kworker/u16:0+events_unbound	23:42:19	5
1594602	99	33	31,2	cyclictest	2027551	-21	kworker/u16:4+flush-8:0	23:09:31	5
1594602	99	33	31,2	cyclictest	1991019	-21	kworker/u16:0+flush-8:0	22:48:32	5
1594602	99	33	31,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:37:20	5
1594602	99	33	31,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:37:20	5
1594602	99	33	31,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	21:56:13	5
1594602	99	33	31,2	cyclictest	1877555	-21	kworker/u16:2+flush-8:0	21:44:11	5
1594605	99	32	30,2	cyclictest	2285112	-21	kworker/u16:0+events_unbound	00:15:12	6
1594605	99	32	30,2	cyclictest	2185883	-21	kworker/u16:3+events_unbound	23:55:12	6
1594605	99	32	30,2	cyclictest	2185883	-21	kworker/u16:3+events_unbound	23:47:00	6
1594605	99	32	30,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:35:52	6
1594605	99	32	30,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:35:52	6
1594605	99	32	30,2	cyclictest	1904770	-21	kworker/u16:0+events_unbound	21:55:01	6
1594605	99	32	30,2	cyclictest	1714053	-21	kworker/u16:1+events_unbound	21:21:52	6
1594602	99	32	30,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	23:51:28	5
1594602	99	32	30,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:34:39	5
1594602	99	32	30,2	cyclictest	2003225	-21	kworker/u16:2+flush-8:0	22:21:44	5
1594602	99	32	30,2	cyclictest	1991019	-21	kworker/u16:0+flush-8:0	22:43:55	5
1594602	99	32	30,2	cyclictest	1991019	-21	kworker/u16:0+flush-8:0	22:43:55	5
1594602	99	32	30,2	cyclictest	1877555	-21	kworker/u16:2+events_unbound	21:26:08	5
1594605	99	31	29,2	cyclictest	2185883	-21	kworker/u16:3+events_unbound	23:52:32	6
1594605	99	31	29,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:01:47	6
1594605	99	31	29,2	cyclictest	1811992	-21	kworker/u16:3+events_unbound	21:14:28	6
1594602	99	31	29,2	cyclictest	2285112	-21	kworker/u16:0+events_unbound	00:31:26	5
1594602	99	31	29,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	00:18:04	5
1594602	99	31	29,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:24:20	5
1594602	99	31	29,2	cyclictest	1877555	-21	kworker/u16:2+events_unbound	21:37:41	5
1594602	99	31	29,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	21:16:25	5
1594085	2	31	21,7	sleep6	0	-21	swapper/6	19:06:11	6
1594605	99	30	28,2	cyclictest	2285112	-21	kworker/u16:0+events_unbound	00:33:52	6
1594605	99	30	28,2	cyclictest	2285112	-21	kworker/u16:0+events_unbound	00:28:04	6
1594605	99	30	28,2	cyclictest	2173724	-21	kworker/u16:2+events_unbound	23:37:08	6
1594602	99	30	28,2	cyclictest	1811992	-21	kworker/u16:3+events_unbound	21:50:24	5
1594605	99	29	27,2	cyclictest	2185883	-21	kworker/u16:3+events_unbound	23:41:16	6
1594605	99	29	27,2	cyclictest	1942249	-21	kworker/u16:1+flush-8:0	22:28:44	6
1594605	99	29	27,2	cyclictest	1942249	-21	kworker/u16:1+flush-8:0	22:14:44	6
1594605	99	29	27,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:32:32	6
1594605	99	29	27,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	21:26:31	6
1594605	99	29	27,2	cyclictest	1811992	-21	kworker/u16:3+flush-8:0	21:35:15	6
1594605	99	29	26,3	cyclictest	1991019	-21	kworker/u16:0+events_unbound	22:53:31	6
1594602	99	29	27,2	cyclictest	1942249	-21	kworker/u16:1+events_unbound	22:19:23	5
1594602	99	29	27,2	cyclictest	1714053	-21	kworker/u16:1+flush-8:0	20:34:54	5
1594602	99	29	27,2	cyclictest	1646916	-21	kworker/u16:2+flush-8:0	20:40:07	5
1594605	99	28	26,2	cyclictest	2247982	-21	kworker/u16:1+events_unbound	00:11:04	6
1594605	99	28	26,2	cyclictest	2100639	-21	kworker/u16:1+events_unbound	23:04:51	6
2061893	2	27	0,1	chrt	2061891	-21	ssh	22:41:02	7
2061893	2	27	0,1	chrt	2061891	-21	ssh	22:41:02	7
1594605	99	27	25,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:27:39	6
1594605	99	27	25,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	22:01:12	6
1594605	99	27	25,2	cyclictest	1844387	-21	kworker/u16:4+events_unbound	21:18:32	6
1594605	99	27	25,2	cyclictest	1714053	-21	kworker/u16:1+flush-8:0	20:29:57	6
1594605	99	27	25,2	cyclictest	1714053	-21	kworker/u16:1+flush-8:0	20:29:57	6
1594605	99	27	25,2	cyclictest	1565386	-21	kworker/u16:3+events_unbound	19:10:12	6
1594605	99	27	24,2	cyclictest	1665457	-21	kworker/u16:3+events_unbound	19:59:53	6
1594605	99	26	24,2	cyclictest	2027551	-21	kworker/u16:4+events_unbound	23:33:39	6
1594605	99	26	24,2	cyclictest	1811992	-21	kworker/u16:3+flush-8:0	22:13:12	6
1594602	99	26	24,2	cyclictest	1714053	-21	kworker/u16:1+flush-8:0	20:15:10	5
1594605	99	25	23,2	cyclictest	2100639	-21	kworker/u16:1+events_unbound	23:23:00	6
1594605	99	25	23,2	cyclictest	1991019	-21	kworker/u16:0+events_unbound	22:58:28	6
1594605	99	25	23,2	cyclictest	1811992	-21	kworker/u16:3+flush-8:0	21:45:03	6
1594605	99	25	23,2	cyclictest	1521230	-21	kworker/u16:4+events_unbound	19:40:01	6
1594602	99	25	23,2	cyclictest	1646916	-21	kworker/u16:2+events_unbound	20:03:53	5
1594602	99	25	23,2	cyclictest	1604186	-21	kworker/u16:0+events_unbound	20:10:12	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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