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.

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 29, 2026 00:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1566196	2	60	49,7	sleep5	0	-21	swapper/5	19:05:01	5
1575740	99	42	39,2	cyclictest	1734530	-21	kworker/u16:0+events_unbound	23:14:52	5
1575740	99	41	39,2	cyclictest	1755364	-21	kworker/u16:4+events_unbound	20:55:20	5
1575463	2	41	30,8	sleep4	0	-21	swapper/4	19:09:49	4
1575747	99	39	37,1	cyclictest	0	-21	swapper/7	21:20:52	7
1575740	99	39	37,2	cyclictest	2228581	-21	kworker/u16:1+events_unbound	00:18:56	5
1575740	99	39	36,2	cyclictest	2228581	-21	kworker/u16:1+flush-8:0	00:31:36	5
1575158	2	39	3,31	sleep7	0	-21	swapper/7	19:05:35	7
1575747	99	38	37,0	cyclictest	0	-21	swapper/7	22:42:37	7
1575747	99	38	37,0	cyclictest	0	-21	swapper/7	00:10:24	7
1575740	99	38	36,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	23:06:16	5
1575740	99	38	36,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	23:02:41	5
1575740	99	38	35,2	cyclictest	2055386	-21	kworker/u16:3+flush-8:0	23:13:16	5
1575740	99	38	35,2	cyclictest	1888088	-21	kworker/u16:2+flush-8:0	22:40:20	5
1575747	99	37	36,0	cyclictest	0	-21	swapper/7	21:41:21	7
1575740	99	37	35,2	cyclictest	2201511	-21	kworker/u16:4+flush-8:0	23:58:04	5
1575740	99	37	35,2	cyclictest	2201511	-21	kworker/u16:4+flush-8:0	23:53:53	5
1575740	99	37	35,2	cyclictest	1994153	-21	kworker/u16:1+events_unbound	23:22:13	5
1575740	99	37	35,2	cyclictest	1994153	-21	kworker/u16:1+events_unbound	22:55:25	5
1575740	99	37	35,2	cyclictest	1935555	-21	kworker/u16:3+flush-8:0	22:18:29	5
1575740	99	37	35,2	cyclictest	1888088	-21	kworker/u16:2+flush-8:0	21:46:20	5
1575740	99	37	35,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	22:33:40	5
1575740	99	37	35,2	cyclictest	1628647	-21	kworker/u16:2+flush-8:0	20:40:25	5
1575747	99	36	35,0	cyclictest	0	-21	swapper/7	21:45:21	7
1575747	99	36	35,0	cyclictest	0	-21	swapper/7	21:38:33	7
1575747	99	36	35,0	cyclictest	0	-21	swapper/7	00:03:41	7
1575740	99	36	34,2	cyclictest	2168905	-21	kworker/u16:2+events_unbound	00:05:44	5
1575740	99	36	34,2	cyclictest	2055386	-21	kworker/u16:3+flush-8:0	23:42:17	5
1575740	99	36	34,2	cyclictest	2055386	-21	kworker/u16:3+events_unbound	23:33:12	5
1575740	99	36	34,2	cyclictest	1994153	-21	kworker/u16:1+flush-8:0	22:27:52	5
1575740	99	36	34,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	21:50:04	5
1575747	99	35	34,0	cyclictest	0	-21	swapper/7	23:53:57	7
1575747	99	35	34,0	cyclictest	0	-21	swapper/7	23:33:56	7
1575747	99	35	34,0	cyclictest	0	-21	swapper/7	22:16:20	7
1575747	99	35	34,0	cyclictest	0	-21	swapper/7	21:49:53	7
1575747	99	35	33,1	cyclictest	2288261	-21	ssh	00:23:12	7
1575747	99	35	32,2	cyclictest	2241600	-21	hddtemp_smartct	00:05:05	7
1575740	99	35	33,2	cyclictest	2201511	-21	kworker/u16:4+flush-8:0	00:20:41	5
1575740	99	35	33,2	cyclictest	2201511	-21	kworker/u16:4+events_unbound	00:28:56	5
1575740	99	35	33,2	cyclictest	2153548	-21	kworker/u16:0+flush-8:0	23:37:20	5
1575740	99	35	33,2	cyclictest	2055386	-21	kworker/u16:3+flush-8:0	00:01:44	5
1575740	99	35	33,2	cyclictest	1850431	-21	kworker/u16:3+events_unbound	21:27:52	5
1575740	99	35	33,2	cyclictest	1827290	-21	kworker/u16:4+events_unbound	21:43:44	5
1575740	99	35	33,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	21:05:16	5
1575740	99	35	33,2	cyclictest	1734530	-21	kworker/u16:0+events_unbound	22:49:20	5
1575740	99	35	33,2	cyclictest	1734530	-21	kworker/u16:0+events_unbound	22:05:25	5
1575747	99	34	33,0	cyclictest	0	-21	swapper/7	23:49:21	7
1575747	99	34	33,0	cyclictest	0	-21	swapper/7	22:53:36	7
1575740	99	34	32,2	cyclictest	2201511	-21	kworker/u16:4+events_unbound	23:47:12	5
1575740	99	34	32,2	cyclictest	1888088	-21	kworker/u16:2+events_unbound	22:37:44	5
1575740	99	34	32,2	cyclictest	1813912	-21	kworker/u16:1+events_unbound	21:31:17	5
1575747	99	33	32,0	cyclictest	0	-21	swapper/7	23:26:53	7
1575747	99	33	31,1	cyclictest	2008361	-21	ssh	22:29:16	7
1575740	99	33	31,2	cyclictest	2168905	-21	kworker/u16:2+flush-8:0	00:39:17	5
1575740	99	33	31,2	cyclictest	1994153	-21	kworker/u16:1+flush-8:0	23:26:24	5
1575740	99	33	31,2	cyclictest	1888088	-21	kworker/u16:2+flush-8:0	22:03:28	5
1575740	99	33	31,2	cyclictest	1850431	-21	kworker/u16:3+events_unbound	21:38:37	5
1575740	99	33	31,2	cyclictest	1827290	-21	kworker/u16:4+flush-8:0	21:16:49	5
1575740	99	33	31,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	21:58:21	5
1575747	99	32	31,0	cyclictest	0	-21	swapper/7	23:36:29	7
1575747	99	32	31,0	cyclictest	0	-21	swapper/7	23:08:13	7
1575747	99	32	31,0	cyclictest	0	-21	swapper/7	22:36:37	7
1575747	99	32	31,0	cyclictest	0	-21	swapper/7	21:58:25	7
1575747	99	32	30,1	cyclictest	2311803	-21	ssh	00:31:40	7
1575747	99	32	30,1	cyclictest	1994085	-21	ssh	22:20:24	7
1575740	99	32	30,2	cyclictest	2168905	-21	kworker/u16:2+flush-8:0	00:11:17	5
1575740	99	32	30,2	cyclictest	1827290	-21	kworker/u16:4+flush-8:0	21:21:29	5
1575739	99	32	30,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	20:54:51	4
1575739	99	32	30,2	cyclictest	1574404	-21	kworker/u16:4+events_unbound	19:17:13	4
1575747	99	31	30,0	cyclictest	0	-21	swapper/7	22:48:56	7
1575740	99	31	29,2	cyclictest	1888088	-21	kworker/u16:2+events_unbound	22:13:20	5
1575740	99	31	29,2	cyclictest	1628647	-21	kworker/u16:2+events_unbound	20:05:10	5
1575739	99	31	29,2	cyclictest	2228581	-21	kworker/u16:1+events_unbound	00:31:07	4
1575747	99	30	29,0	cyclictest	0	-21	swapper/7	23:10:40	7
1575747	99	30	29,0	cyclictest	0	-21	swapper/7	00:39:25	7
1575747	99	30	29,0	cyclictest	0	-21	swapper/7	00:15:28	7
1575747	99	30	27,2	cyclictest	1629883	-21	kthreadcore	19:35:08	7
1575740	99	30	28,2	cyclictest	1813912	-21	kworker/u16:1+events_unbound	21:11:54	5
1575740	99	30	28,2	cyclictest	1734530	-21	kworker/u16:0+flush-8:0	22:54:30	5
1575740	99	30	28,2	cyclictest	1574404	-21	kworker/u16:4+flush-8:0	20:15:10	5
1575377	2	30	19,8	sleep6	0	-21	swapper/6	19:08:39	6
1575747	99	29	28,0	cyclictest	0	-21	swapper/7	23:16:16	7
1575747	99	29	28,0	cyclictest	0	-21	swapper/7	22:09:48	7
1575747	99	29	28,0	cyclictest	0	-21	swapper/7	21:32:49	7
1575740	99	29	27,2	cyclictest	1663032	-21	kworker/u16:5+flush-8:0	19:55:13	5
1575740	99	29	26,2	cyclictest	1547652	-21	kworker/u16:0+flush-8:0	19:10:01	5
1575739	99	29	27,2	cyclictest	2168905	-21	kworker/u16:2+events_unbound	23:46:06	4
1575739	99	29	27,2	cyclictest	2055386	-21	kworker/u16:3+events_unbound	22:52:35	4
1575739	99	29	27,2	cyclictest	1994153	-21	kworker/u16:1+events_unbound	23:26:18	4
1575739	99	29	27,2	cyclictest	1827290	-21	kworker/u16:4+events_unbound	21:46:06	4
1575747	99	28	27,0	cyclictest	0	-21	swapper/7	23:58:17	7
1575747	99	28	27,0	cyclictest	0	-21	swapper/7	22:58:41	7
1575740	99	28	26,2	cyclictest	1663032	-21	kworker/u16:5+flush-8:0	19:50:17	5
1575740	99	28	26,2	cyclictest	1574404	-21	kworker/u16:4+flush-8:0	19:43:01	5
1575740	99	28	25,2	cyclictest	1574404	-21	kworker/u16:4+flush-8:0	19:30:08	5
1575739	99	28	26,2	cyclictest	2168905	-21	kworker/u16:2+events_unbound	00:12:07	4
1575739	99	28	26,2	cyclictest	1663032	-21	kworker/u16:5+events_unbound	19:58:57	4
1575739	99	28	26,2	cyclictest	1574404	-21	kworker/u16:4+events_unbound	19:35:14	4
1575747	99	27	26,0	cyclictest	0	-21	swapper/7	19:30:17	7
1575740	99	27	25,2	cyclictest	1574404	-21	kworker/u16:4+flush-8:0	20:04:00	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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