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 Sun May 03, 2026 00:46:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1080187	2	252	244,5	sleep16	0	-21	swapper/16	19:08:56	8
1079959	2	245	239,4	sleep5	0	-21	swapper/5	19:06:24	15
1079955	2	245	238,4	sleep1	0	-21	swapper/1	19:06:20	1
1080052	2	240	199,12	sleep10	0	-21	swapper/10	19:07:30	2
1079909	2	234	215,12	sleep4	0	-21	swapper/4	19:05:43	14
1080023	2	233	212,13	sleep9	0	-21	swapper/9	19:07:09	19
1080136	2	231	211,12	sleep17	0	-21	swapper/17	19:08:17	9
1080049	2	230	210,12	sleep8	0	-21	swapper/8	19:07:28	18
1080177	2	229	209,13	sleep6	0	-21	swapper/6	19:08:46	16
1080073	2	229	211,11	sleep3	0	-21	swapper/3	19:07:44	13
1080030	2	229	210,12	sleep14	0	-21	swapper/14	19:07:14	6
1079999	2	228	209,12	sleep13	0	-21	swapper/13	19:06:52	5
1080191	2	227	208,12	sleep19	0	-21	swapper/19	19:08:59	11
1076973	2	227	209,11	sleep2	0	-21	swapper/2	19:05:01	12
1076985	2	226	207,11	sleep12	0	-21	swapper/12	19:05:12	4
1079897	2	224	204,12	sleep15	0	-21	swapper/15	19:05:34	7
1080235	2	223	204,12	sleep11	0	-21	swapper/11	19:09:31	3
1080151	2	221	202,12	sleep7	0	-21	swapper/7	19:08:27	17
1079925	2	220	200,13	sleep18	0	-21	swapper/18	19:05:57	10
1080008	2	219	199,12	sleep0	0	-21	swapper/0	19:07:00	0
1080669	99	54	0,33	cyclictest	0	-21	swapper/8	20:46:27	18
1080679	99	40	5,20	cyclictest	0	-21	swapper/10	00:01:26	2
1080699	99	39	13,26	cyclictest	168	1	irq_work/16	19:44:59	8
1080699	99	38	0,30	cyclictest	0	-21	swapper/16	20:14:59	8
1925	99	36	0,0	ntpd	0	-21	swapper/10	20:16:23	2
1925	99	36	0,0	ntpd	0	-21	swapper/10	20:16:23	2
1080708	99	36	0,35	cyclictest	1094542	-21	latency_hist	19:24:59	11
1080708	99	35	35,0	cyclictest	0	-21	swapper/19	21:16:59	11
1080708	99	35	0,0	cyclictest	0	-21	swapper/19	21:00:59	11
1080669	99	35	33,2	cyclictest	0	-21	swapper/8	19:47:59	18
1080708	99	34	34,0	cyclictest	0	-21	swapper/19	21:25:59	11
1080696	99	34	33,1	cyclictest	0	-21	swapper/15	19:19:00	7
1080696	99	34	32,1	cyclictest	1613	-21	systemd-machine	19:39:59	7
1080696	99	34	0,33	cyclictest	1280408	-21	crond	23:09:59	7
1080696	99	34	0,33	cyclictest	0	-21	swapper/15	20:21:59	7
1080696	99	34	0,33	cyclictest	0	-21	swapper/15	20:21:59	7
1080696	99	34	0,33	cyclictest	0	-21	swapper/15	19:14:59	7
1080689	99	34	31,3	cyclictest	143	1	rcuc/13	19:47:59	5
1080674	99	34	32,1	cyclictest	0	-21	swapper/9	20:00:59	19
1080669	99	34	34,0	cyclictest	0	-21	swapper/8	19:53:59	18
1080669	99	34	0,34	cyclictest	0	-21	swapper/8	22:46:59	18
1080669	99	34	0,34	cyclictest	0	-21	swapper/8	20:29:59	18
1080669	99	34	0,34	cyclictest	0	-21	swapper/8	20:29:59	18
1080661	99	34	32,2	cyclictest	1098674	-21	latency_hist	19:29:59	15
1080655	99	34	0,33	cyclictest	0	-21	swapper/3	21:10:59	13
1080645	99	34	0,1	cyclictest	0	-21	swapper/0	23:14:59	0
1080708	99	33	33,0	cyclictest	0	-21	swapper/19	19:26:59	11
1080708	99	33	0,33	cyclictest	0	-21	swapper/19	20:40:59	11
1080699	99	33	0,33	cyclictest	0	-21	swapper/16	21:07:59	8
1080696	99	33	33,0	cyclictest	0	-21	swapper/15	19:58:59	7
1080696	99	33	0,32	cyclictest	0	-21	swapper/15	19:53:59	7
1080696	99	33	0,32	cyclictest	0	-21	swapper/15	19:30:59	7
1080696	99	33	0,0	cyclictest	0	-21	swapper/15	23:39:59	7
1080696	99	33	0,0	cyclictest	0	-21	swapper/15	21:10:59	7
1080689	99	33	33,0	cyclictest	0	-21	swapper/13	19:24:00	5
1080689	99	33	0,33	cyclictest	0	-21	swapper/13	22:46:59	5
1080687	99	33	33,0	cyclictest	0	-21	swapper/12	20:56:59	4
1080687	99	33	0,33	cyclictest	0	-21	swapper/12	19:35:59	4
1080687	99	33	0,32	cyclictest	0	-21	swapper/12	21:15:59	4
1080687	99	33	0,32	cyclictest	0	-21	swapper/12	19:51:59	4
1080669	99	33	33,0	cyclictest	0	-21	swapper/8	19:23:59	18
1080669	99	33	32,1	cyclictest	96	1	rcuc/8	21:12:59	18
1080666	99	33	33,0	cyclictest	0	-21	swapper/7	21:38:59	17
1080666	99	33	0,33	cyclictest	0	-21	swapper/7	19:45:59	17
1080661	99	33	0,33	cyclictest	0	-21	swapper/5	21:19:59	15
1080657	99	33	33,0	cyclictest	0	-21	swapper/4	23:39:59	14
1080657	99	33	33,0	cyclictest	0	-21	swapper/4	21:10:59	14
1080657	99	33	32,1	cyclictest	0	-21	swapper/4	19:58:59	14
1080657	99	33	0,33	cyclictest	0	-21	swapper/4	20:10:59	14
1080657	99	33	0,33	cyclictest	0	-21	swapper/4	19:48:59	14
1080657	99	33	0,0	cyclictest	0	-21	swapper/4	20:17:59	14
1080657	99	33	0,0	cyclictest	0	-21	swapper/4	20:17:59	14
1080655	99	33	0,32	cyclictest	0	-21	swapper/3	19:27:59	13
1080647	99	33	0,32	cyclictest	0	-21	swapper/1	20:24:59	1
1080647	99	33	0,32	cyclictest	0	-21	swapper/1	20:24:59	1
1080708	99	32	32,0	cyclictest	0	-21	swapper/19	23:25:00	11
1080708	99	32	32,0	cyclictest	0	-21	swapper/19	21:25:00	11
1080708	99	32	32,0	cyclictest	0	-21	swapper/19	19:36:59	11
1080704	99	32	32,0	cyclictest	0	-21	swapper/18	20:45:59	10
1080702	99	32	32,0	cyclictest	0	-21	swapper/17	21:10:00	9
1080702	99	32	32,0	cyclictest	0	-21	swapper/17	19:34:59	9
1080696	99	32	31,1	cyclictest	0	-21	swapper/15	20:05:59	7
1080696	99	32	31,1	cyclictest	0	-21	swapper/15	19:21:59	7
1080696	99	32	31,0	cyclictest	0	-21	swapper/15	20:51:59	7
1080689	99	32	32,0	cyclictest	0	-21	swapper/13	19:59:59	5
1080689	99	32	30,2	cyclictest	143	1	rcuc/13	21:36:59	5
1080687	99	32	32,0	cyclictest	0	-21	swapper/12	22:59:59	4
1080687	99	32	32,0	cyclictest	0	-21	swapper/12	20:19:00	4
1080687	99	32	32,0	cyclictest	0	-21	swapper/12	20:18:59	4
1080687	99	32	32,0	cyclictest	0	-21	swapper/12	20:04:00	4
1080687	99	32	32,0	cyclictest	0	-21	swapper/12	00:34:58	4
1080687	99	32	0,32	cyclictest	0	-21	swapper/12	23:04:59	4
1080683	99	32	0,1	cyclictest	3999721	-21	CPU		3
1080679	99	32	31,1	cyclictest	0	-21	swapper/10	20:32:59	2
1080674	99	32	32,0	cyclictest	0	-21	swapper/9	21:09:59	19
1080669	99	32	32,0	cyclictest	0	-21	swapper/8	21:47:59	18
1080666	99	32	32,0	cyclictest	0	-21	swapper/7	20:00:59	17
1080666	99	32	32,0	cyclictest	0	-21	swapper/7	19:30:59	17
1080666	99	32	0,31	cyclictest	0	-21	swapper/7	20:40:59	17
1080664	99	32	32,0	cyclictest	0	-21	swapper/6	21:09:00	16
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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