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 50 highest latencies:

System rack0slot2.osadl.org (updated Mon Jul 20, 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
3106188	2	58	48,7	sleep5	0	-21	swapper/5	19:08:12	5
3106255	2	55	20,30	sleep7	0	-21	swapper/7	19:09:10	7
3106214	2	49	37,8	sleep4	0	-21	swapper/4	19:08:35	4
3106576	99	42	40,2	cyclictest	3314483	-21	kworker/u16:0+events_unbound	21:30:09	4
3106576	99	40	37,2	cyclictest	3600070	-21	kworker/u16:1+events_unbound	23:44:38	4
3106582	99	38	36,2	cyclictest	3733012	-21	kworker/u16:0+events_unbound	23:52:54	5
3106582	99	38	35,2	cyclictest	3514494	-21	cat	22:19:30	5
3106576	99	38	35,3	cyclictest	3758588	-21	kworker/u16:4+events_unbound	00:38:09	4
3106584	99	37	35,2	cyclictest	3539347	-21	kworker/u16:2+events_unbound	22:55:49	6
3106582	99	37	35,2	cyclictest	3366988	-21	kworker/u16:2+events_unbound	21:47:13	5
3106584	99	36	34,2	cyclictest	3587038	-21	kworker/u16:0+events_unbound	23:05:49	6
3106582	99	36	34,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:43:14	5
3106582	99	36	34,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:43:14	5
3106576	99	36	34,2	cyclictest	3758116	-21	kworker/u16:2+events_unbound	00:31:09	4
3106576	99	36	34,2	cyclictest	3648769	-21	kworker/u16:3+events_unbound	23:34:09	4
3106576	99	36	34,2	cyclictest	3539347	-21	kworker/u16:2+events_unbound	23:15:50	4
3106576	99	36	34,2	cyclictest	3425930	-21	kworker/u16:0+events_unbound	21:46:26	4
3106576	99	36	34,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:40:55	4
3106576	99	36	34,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:40:55	4
3106576	99	36	34,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:04:17	4
3106584	99	35	33,2	cyclictest	3600070	-21	kworker/u16:1+events_unbound	23:03:10	6
3106584	99	35	33,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:03:18	6
3106584	99	35	29,2	cyclictest	3648769	-21	kworker/u16:3+events_unbound	00:23:37	6
3106582	99	35	33,2	cyclictest	3758116	-21	kworker/u16:2+events_unbound	00:38:13	5
3106582	99	35	33,2	cyclictest	3539347	-21	kworker/u16:2+events_unbound	23:11:05	5
3106582	99	35	33,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:30:18	5
3106582	99	35	33,2	cyclictest	3314483	-21	kworker/u16:0+events_unbound	21:31:58	5
3106582	99	35	33,2	cyclictest	3265942	-21	kworker/u16:3+events_unbound	21:26:42	5
3106576	99	35	33,2	cyclictest	3600070	-21	kworker/u16:1+events_unbound	23:04:34	4
3106576	99	35	33,2	cyclictest	3453659	-21	kworker/u16:1+events_unbound	22:22:02	4
3106576	99	35	33,2	cyclictest	3425930	-21	kworker/u16:0+events_unbound	21:58:15	4
3106576	99	35	33,2	cyclictest	3366988	-21	kworker/u16:2+events_unbound	21:37:42	4
3106584	99	34	32,2	cyclictest	3587038	-21	kworker/u16:0+events_unbound	23:26:49	6
3106584	99	34	32,2	cyclictest	3587038	-21	kworker/u16:0+events_unbound	22:51:42	6
3106584	99	34	32,2	cyclictest	3539347	-21	kworker/u16:2+events_unbound	22:38:25	6
3106584	99	34	32,2	cyclictest	3539347	-21	kworker/u16:2+events_unbound	22:38:25	6
3106584	99	34	32,2	cyclictest	3425930	-21	kworker/u16:0+events_unbound	21:48:37	6
3106582	99	34	32,2	cyclictest	3758116	-21	kworker/u16:2+events_unbound	00:08:34	5
3106582	99	34	32,2	cyclictest	3600070	-21	kworker/u16:1+events_unbound	23:55:58	5
3106582	99	34	29,4	cyclictest	3343294	-21	latency_hist	21:09:36	5
3106576	99	34	32,2	cyclictest	3758588	-21	kworker/u16:4+events_unbound	00:04:09	4
3106576	99	34	32,2	cyclictest	3648769	-21	kworker/u16:3+events_unbound	23:44:26	4
3106576	99	34	32,2	cyclictest	3600070	-21	kworker/u16:1+events_unbound	23:25:54	4
3106576	99	34	32,2	cyclictest	3478083	-21	kworker/u16:3+events_unbound	22:16:38	4
3106576	99	34	32,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:39:02	4
3106576	99	34	32,2	cyclictest	3380323	-21	kworker/u16:5+events_unbound	22:39:02	4
3106083	2	34	24,7	sleep6	0	-21	swapper/6	19:06:45	6
3106584	99	33	31,2	cyclictest	3758116	-21	kworker/u16:2+events_unbound	00:08:29	6
3106584	99	33	31,2	cyclictest	3265942	-21	kworker/u16:3+events_unbound	21:26:22	6
3106582	99	33	31,2	cyclictest	3758116	-21	kworker/u16:2+events_unbound	00:20:30	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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