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 06, 2026 00:45:59)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4081404	2	276	268,5	sleep4	0	-21	swapper/4	19:05:41	14
4081418	2	262	254,5	sleep18	0	-21	swapper/18	19:05:56	10
4081416	2	252	244,5	sleep16	0	-21	swapper/16	19:05:54	8
4081633	2	246	206,12	sleep14	0	-21	swapper/14	19:08:52	6
4081523	2	246	208,12	sleep3	0	-21	swapper/3	19:07:22	13
4081697	2	244	236,5	sleep11	0	-21	swapper/11	19:09:30	3
4081578	2	243	204,12	sleep12	0	-21	swapper/12	19:08:10	4
4081378	2	238	198,12	sleep7	0	-21	swapper/7	19:05:24	17
4081686	2	236	216,12	sleep5	0	-21	swapper/5	19:09:23	15
4081402	2	236	217,12	sleep2	0	-21	swapper/2	19:05:40	12
4081398	2	236	215,13	sleep19	0	-21	swapper/19	19:05:37	11
4078486	2	236	192,12	sleep10	0	-21	swapper/10	19:05:08	2
4081669	2	235	216,12	sleep17	0	-21	swapper/17	19:09:16	9
4081579	2	233	214,12	sleep13	0	-21	swapper/13	19:08:11	5
4081674	2	232	224,5	sleep0	0	-21	swapper/0	19:09:19	0
4081574	2	230	210,13	sleep8	0	-21	swapper/8	19:08:07	18
4081526	2	230	211,12	sleep6	0	-21	swapper/6	19:07:24	16
4081495	2	230	210,12	sleep1	0	-21	swapper/1	19:07:00	1
4081657	2	229	209,13	sleep9	0	-21	swapper/9	19:09:08	19
4081394	2	228	208,13	sleep15	0	-21	swapper/15	19:05:32	7
4082170	99	75	5,29	cyclictest	0	-21	swapper/18	23:08:17	10
4082174	99	35	0,35	cyclictest	0	-21	swapper/19	19:53:59	11
4082170	99	35	0,35	cyclictest	0	-21	swapper/18	20:54:59	10
4082138	99	35	0,35	cyclictest	0	-21	swapper/9	00:01:58	19
4082135	99	35	0,0	cyclictest	0	-21	swapper/8	20:52:59	18
4082174	99	34	34,0	cyclictest	0	-21	swapper/19	22:42:59	11
4082164	99	34	0,33	cyclictest	0	-21	swapper/16	20:49:59	8
4082161	99	34	0,33	cyclictest	0	-21	swapper/15	20:40:58	7
4082138	99	34	34,0	cyclictest	0	-21	swapper/9	19:50:59	19
4082129	99	34	0,33	cyclictest	0	-21	swapper/6	21:43:59	16
4082129	99	34	0,33	cyclictest	0	-21	swapper/6	21:00:59	16
4082120	99	34	33,1	cyclictest	0	-21	swapper/3	22:55:58	13
4082174	99	33	33,0	cyclictest	0	-21	swapper/19	23:29:59	11
4082174	99	33	33,0	cyclictest	0	-21	swapper/19	21:33:59	11
4082174	99	33	33,0	cyclictest	0	-21	swapper/19	20:05:59	11
4082174	99	33	0,33	cyclictest	0	-21	swapper/19	21:04:58	11
4082174	99	33	0,0	cyclictest	0	-21	swapper/19	21:53:58	11
4082174	99	33	0,0	cyclictest	0	-21	swapper/19	21:53:58	11
4082164	99	33	0,33	cyclictest	0	-21	swapper/16	21:56:59	8
4082164	99	33	0,33	cyclictest	0	-21	swapper/16	21:56:58	8
4082164	99	33	0,33	cyclictest	0	-21	swapper/16	20:35:58	8
4082164	99	33	0,33	cyclictest	0	-21	swapper/16	20:34:58	8
4082164	99	33	0,0	cyclictest	0	-21	swapper/16	22:00:59	8
4082164	99	33	0,0	cyclictest	0	-21	swapper/16	21:43:58	8
4082161	99	33	33,0	cyclictest	0	-21	swapper/15	00:21:59	7
4082161	99	33	0,33	cyclictest	0	-21	swapper/15	23:49:58	7
4082161	99	33	0,33	cyclictest	0	-21	swapper/15	20:23:59	7
4082161	99	33	0,33	cyclictest	0	-21	swapper/15	00:39:59	7
4082159	99	33	32,1	cyclictest	0	-21	swapper/14	23:55:59	6
4082159	99	33	32,0	cyclictest	0	-21	swapper/14	23:00:59	6
4082159	99	33	32,0	cyclictest	0	-21	swapper/14	22:45:58	6
4082154	99	33	0,33	cyclictest	0	-21	swapper/13	22:55:59	5
4082150	99	33	0,33	cyclictest	0	-21	swapper/12	23:19:58	4
4082150	99	33	0,33	cyclictest	0	-21	swapper/12	19:46:59	4
4082141	99	33	0,32	cyclictest	0	-21	swapper/10	22:26:58	2
4082135	99	33	33,0	cyclictest	0	-21	swapper/8	22:54:59	18
4082135	99	33	33,0	cyclictest	0	-21	swapper/8	21:26:58	18
4082135	99	33	0,33	cyclictest	0	-21	swapper/8	19:38:59	18
4082135	99	33	0,0	cyclictest	0	-21	swapper/8	22:25:59	18
4082133	99	33	33,0	cyclictest	0	-21	swapper/7	23:35:59	17
4082133	99	33	0,32	cyclictest	0	-21	swapper/7	22:35:18	17
4082129	99	33	33,0	cyclictest	0	-21	swapper/6	20:57:59	16
4082129	99	33	0,33	cyclictest	0	-21	swapper/6	22:00:59	16
4082129	99	33	0,33	cyclictest	0	-21	swapper/6	21:56:59	16
4082129	99	33	0,33	cyclictest	0	-21	swapper/6	21:56:58	16
4082129	99	33	0,33	cyclictest	0	-21	swapper/6	20:35:58	16
4082129	99	33	0,32	cyclictest	0	-21	swapper/6	19:28:58	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	21:38:59	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	20:44:58	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	20:17:58	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	20:08:58	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	20:04:58	16
4082129	99	33	0,0	cyclictest	0	-21	swapper/6	19:58:59	16
4082124	99	33	0,33	cyclictest	0	-21	swapper/4	21:26:58	14
4082174	99	32	32,0	cyclictest	0	-21	swapper/19	21:18:58	11
4082174	99	32	32,0	cyclictest	0	-21	swapper/19	20:23:59	11
4082174	99	32	32,0	cyclictest	0	-21	swapper/19	00:19:59	11
4082170	99	32	32,0	cyclictest	0	-21	swapper/18	00:32:59	10
4082167	99	32	32,0	cyclictest	0	-21	swapper/17	23:59:59	9
4082167	99	32	32,0	cyclictest	0	-21	swapper/17	22:20:59	9
4082167	99	32	32,0	cyclictest	0	-21	swapper/17	20:02:58	9
4082164	99	32	32,0	cyclictest	0	-21	swapper/16	22:08:58	8
4082164	99	32	32,0	cyclictest	0	-21	swapper/16	21:06:58	8
4082164	99	32	32,0	cyclictest	0	-21	swapper/16	20:54:59	8
4082164	99	32	32,0	cyclictest	0	-21	swapper/16	19:17:59	8
4082164	99	32	0,0	cyclictest	0	-21	swapper/16	21:14:59	8
4082164	99	32	0,0	cyclictest	0	-21	swapper/16	19:28:59	8
4082161	99	32	32,0	cyclictest	0	-21	swapper/15	21:13:59	7
4082161	99	32	0,32	cyclictest	0	-21	swapper/15	20:53:59	7
4082161	99	32	0,0	cyclictest	0	-21	swapper/15	00:17:58	7
4082154	99	32	32,0	cyclictest	0	-21	swapper/13	23:23:59	5
4082154	99	32	32,0	cyclictest	0	-21	swapper/13	21:23:59	5
4082154	99	32	32,0	cyclictest	0	-21	swapper/13	19:41:58	5
4082150	99	32	32,0	cyclictest	0	-21	swapper/12	23:14:58	4
4082150	99	32	32,0	cyclictest	0	-21	swapper/12	20:42:58	4
4082150	99	32	0,32	cyclictest	0	-21	swapper/12	22:53:58	4
4082145	99	32	0,31	cyclictest	0	-21	swapper/11	20:01:59	3
4082135	99	32	31,1	cyclictest	0	-21	swapper/8	19:33:58	18
4082133	99	32	32,0	cyclictest	0	-21	swapper/7	21:35:59	17
4082133	99	32	32,0	cyclictest	0	-21	swapper/7	21:00:58	17
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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