OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
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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 rack0slot6s.osadl.org (updated Mon Jul 27, 2026 00:46:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3838122	2	256	249,4	sleep18	0	-21	swapper/18	19:08:59	10
3837858	2	256	248,5	sleep8	0	-21	swapper/8	19:05:28	18
3838131	2	250	243,4	sleep6	0	-21	swapper/6	19:09:08	16
3838144	2	238	199,31	sleep19	0	-21	swapper/19	19:09:21	11
3838132	2	238	219,12	sleep7	0	-21	swapper/7	19:09:09	17
3834928	2	237	219,11	sleep3	0	-21	swapper/3	19:05:04	13
3837973	2	234	214,12	sleep1	0	-21	swapper/1	19:07:02	1
3837863	2	231	212,12	sleep11	0	-21	swapper/11	19:05:33	3
3837859	2	230	210,12	sleep9	0	-21	swapper/9	19:05:29	19
3837955	2	229	209,12	sleep4	0	-21	swapper/4	19:06:46	14
3838146	2	228	208,12	sleep0	0	-21	swapper/0	19:09:21	0
3837923	2	228	208,12	sleep17	0	-21	swapper/17	19:06:18	9
3837893	2	228	209,11	sleep13	0	-21	swapper/13	19:05:55	5
3837944	2	227	208,12	sleep14	0	-21	swapper/14	19:06:36	6
3836302	2	227	222,2	sleep16	0	-21	swapper/16	19:05:16	8
3838116	2	226	208,11	sleep12	0	-21	swapper/12	19:08:54	4
3838060	2	226	208,11	sleep10	0	-21	swapper/10	19:08:12	2
3837989	2	226	206,12	sleep15	0	-21	swapper/15	19:07:17	7
3838183	2	225	205,12	sleep5	0	-21	swapper/5	19:09:48	15
3837878	2	225	205,12	sleep2	0	-21	swapper/2	19:05:44	12
3838614	99	75	6,28	cyclictest	0	-21	swapper/14	20:33:29	6
3838574	99	37	30,7	cyclictest	0	-21	swapper/2	21:40:58	12
3838605	99	35	2,31	cyclictest	0	-21	swapper/11	23:16:59	3
3838605	99	35	2,31	cyclictest	0	-21	swapper/11	23:16:58	3
3838598	99	35	0,35	cyclictest	0	-21	swapper/9	21:14:58	19
3838595	99	35	35,0	cyclictest	0	-21	swapper/8	20:13:59	18
3838628	99	34	34,0	cyclictest	0	-21	swapper/19	22:07:58	11
3838595	99	34	34,0	cyclictest	0	-21	swapper/8	00:01:58	18
3838595	99	34	33,1	cyclictest	0	-21	swapper/8	19:43:59	18
3838595	99	34	0,34	cyclictest	0	-21	swapper/8	20:55:59	18
3838595	99	34	0,34	cyclictest	0	-21	swapper/8	19:48:59	18
3838595	99	34	0,34	cyclictest	0	-21	swapper/8	19:48:59	18
3838595	99	34	0,33	cyclictest	0	-21	swapper/8	21:41:59	18
3838628	99	33	33,0	cyclictest	0	-21	swapper/19	00:02:58	11
3838626	99	33	33,0	cyclictest	0	-21	swapper/18	23:18:59	10
3838626	99	33	33,0	cyclictest	0	-21	swapper/18	23:18:58	10
3838626	99	33	0,33	cyclictest	0	-21	swapper/18	21:14:58	10
3838623	99	33	33,0	cyclictest	0	-21	swapper/17	19:54:59	9
3838623	99	33	33,0	cyclictest	0	-21	swapper/17	19:54:58	9
3838623	99	33	32,1	cyclictest	0	-21	swapper/17	22:27:59	9
3838623	99	33	0,33	cyclictest	0	-21	swapper/17	22:41:59	9
3838623	99	33	0,33	cyclictest	0	-21	swapper/17	22:35:59	9
3838623	99	33	0,33	cyclictest	0	-21	swapper/17	21:02:59	9
3838623	99	33	0,33	cyclictest	0	-21	swapper/17	20:12:59	9
3838623	99	33	0,33	cyclictest	0	-21	swapper/17	00:13:59	9
3838616	99	33	0,33	cyclictest	0	-21	swapper/15	21:28:59	7
3838616	99	33	0,33	cyclictest	0	-21	swapper/15	00:36:59	7
3838616	99	33	0,33	cyclictest	0	-21	swapper/15	00:07:58	7
3838614	99	33	0,33	cyclictest	0	-21	swapper/14	23:58:58	6
3838614	99	33	0,33	cyclictest	0	-21	swapper/14	23:03:59	6
3838614	99	33	0,33	cyclictest	0	-21	swapper/14	21:20:58	6
3838605	99	33	0,32	cyclictest	0	-21	swapper/11	20:13:58	3
3838605	99	33	0,32	cyclictest	0	-21	swapper/11	19:28:58	3
3838605	99	33	0,32	cyclictest	0	-21	swapper/11	00:01:58	3
3838595	99	33	33,0	cyclictest	0	-21	swapper/8	21:15:58	18
3838595	99	33	33,0	cyclictest	0	-21	swapper/8	20:45:59	18
3838595	99	33	33,0	cyclictest	0	-21	swapper/8	19:14:58	18
3838595	99	33	33,0	cyclictest	0	-21	swapper/8	00:30:59	18
3838595	99	33	33,0	cyclictest	0	-21	swapper/8	00:11:59	18
3838595	99	33	0,33	cyclictest	0	-21	swapper/8	23:28:58	18
3838595	99	33	0,33	cyclictest	0	-21	swapper/8	20:36:58	18
3838595	99	33	0,33	cyclictest	0	-21	swapper/8	19:37:58	18
3838595	99	33	0,33	cyclictest	0	-21	swapper/8	00:25:58	18
3838595	99	33	0,0	cyclictest	0	-21	swapper/8	23:30:59	18
3838595	99	33	0,0	cyclictest	0	-21	swapper/8	21:09:59	18
3838595	99	33	0,0	cyclictest	0	-21	swapper/8	19:24:59	18
3838591	99	33	33,0	cyclictest	0	-21	swapper/7	23:53:58	17
3838591	99	33	0,33	cyclictest	0	-21	swapper/7	22:36:59	17
3838591	99	33	0,33	cyclictest	0	-21	swapper/7	19:51:59	17
3838591	99	33	0,33	cyclictest	0	-21	swapper/7	19:51:59	17
3838591	99	33	0,0	cyclictest	0	-21	swapper/7	22:02:59	17
3838579	99	33	33,0	cyclictest	0	-21	swapper/4	19:59:59	14
3838579	99	33	33,0	cyclictest	0	-21	swapper/4	19:59:59	14
3838576	99	33	33,0	cyclictest	0	-21	swapper/3	00:34:58	13
3838576	99	33	0,33	cyclictest	0	-21	swapper/3	21:37:58	13
3838628	99	32	32,0	cyclictest	0	-21	swapper/19	21:09:59	11
3838623	99	32	32,0	cyclictest	0	-21	swapper/17	21:18:58	9
3838621	99	32	21,11	cyclictest	0	-21	swapper/16	23:53:59	8
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	23:44:58	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	22:57:59	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	21:46:59	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	21:39:59	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	21:05:59	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	20:14:59	7
3838616	99	32	32,0	cyclictest	0	-21	swapper/15	00:19:58	7
3838616	99	32	0,32	cyclictest	0	-21	swapper/15	20:54:58	7
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	23:10:58	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	23:10:58	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	23:06:59	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	21:59:58	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	21:50:59	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	19:53:59	6
3838614	99	32	32,0	cyclictest	0	-21	swapper/14	19:53:59	6
3838605	99	32	0,32	cyclictest	0	-21	swapper/11	21:35:58	3
3838605	99	32	0,31	cyclictest	0	-21	swapper/11	20:42:59	3
3838605	99	32	0,31	cyclictest	0	-21	swapper/11	20:24:58	3
3838605	99	32	0,31	cyclictest	0	-21	swapper/11	19:14:59	3
3838595	99	32	32,0	cyclictest	0	-21	swapper/8	23:06:58	18
3838595	99	32	32,0	cyclictest	0	-21	swapper/8	21:46:58	18
3838595	99	32	32,0	cyclictest	0	-21	swapper/8	21:35:59	18
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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