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 50 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
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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