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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 Sat Jun 06, 2026 00:46:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
353975	99	66	6,36	cyclictest	0	-21	swapper/5	23:38:11	15
353967	99	63	6,35	cyclictest	0	-21	swapper/2	20:23:13	12
353983	99	47	21,24	cyclictest	0	-21	swapper/7	20:08:58	17
353983	99	46	19,25	cyclictest	4077777	-21	CPU		17
353975	99	46	45,1	cyclictest	2157	50	irq/155-eno1	00:18:58	15
353368	2	46	41,3	sleep3	0	-21	swapper/3	19:07:39	13
353534	2	45	41,2	sleep10	0	-21	swapper/10	19:09:27	2
353983	99	44	0,35	cyclictest	4077777	-21	CPU		17
353527	2	44	38,3	sleep7	0	-21	swapper/7	19:09:24	17
353963	99	43	31,11	cyclictest	4077776	-21	CPU		1
353255	2	43	38,3	sleep2	0	-21	swapper/2	19:06:38	12
353462	2	42	32,6	sleep4	0	-21	swapper/4	19:08:42	14
354010	99	41	31,8	cyclictest	4077777	-21	CPU		9
354010	99	41	31,8	cyclictest	4077777	-21	CPU		9
353983	99	41	0,33	cyclictest	0	-21	swapper/7	23:55:58	17
353969	99	41	14,26	cyclictest	0	-21	swapper/3	19:34:59	13
353969	99	41	14,26	cyclictest	0	-21	swapper/3	19:34:59	13
353446	2	41	36,3	sleep15	0	-21	swapper/15	19:08:33	7
353440	2	41	36,3	sleep12	0	-21	swapper/12	19:08:29	4
353348	2	41	36,3	sleep13	0	-21	swapper/13	19:07:29	5
353011	2	41	35,4	sleep8	0	-21	swapper/8	19:05:24	18
353583	2	40	34,3	sleep17	0	-21	swapper/17	19:09:54	9
353192	2	40	35,3	sleep9	0	-21	swapper/9	19:06:05	19
354008	99	39	31,8	cyclictest	0	-21	swapper/16	00:25:58	8
353990	99	39	0,32	cyclictest	0	-21	swapper/10	00:25:58	2
353969	99	39	11,28	cyclictest	0	-21	swapper/3	00:03:58	13
353969	99	38	34,4	cyclictest	51	1	rcuc/3	22:25:58	13
353276	2	38	33,3	sleep19	0	-21	swapper/19	19:06:55	11
353136	2	38	33,3	sleep1	0	-21	swapper/1	19:05:37	1
350202	2	38	34,2	sleep11	0	-21	swapper/11	19:05:07	3
350193	2	38	34,2	sleep5	0	-21	swapper/5	19:05:02	15
354008	99	37	33,4	cyclictest	0	-21	swapper/16	21:51:59	8
353990	99	37	30,7	cyclictest	0	-21	swapper/10	23:33:58	2
353990	99	37	30,6	cyclictest	0	-21	swapper/10	22:57:59	2
353969	99	37	33,3	cyclictest	51	1	rcuc/3	23:11:59	13
353969	99	37	29,8	cyclictest	0	-21	swapper/3	20:55:37	13
353351	2	37	32,3	sleep16	0	-21	swapper/16	19:07:33	8
2278	99	37	0,34	ntpd	0	-21	swapper/14	19:05:20	6
354017	99	36	0,35	cyclictest	636703	-40	tracker-miner-f	00:36:59	11
354014	99	36	0,35	cyclictest	623992	-40	tracker-miner-f	00:22:59	10
354008	99	36	28,8	cyclictest	0	-21	swapper/16	22:34:59	8
354008	99	36	28,8	cyclictest	0	-21	swapper/16	22:34:58	8
354002	99	36	0,34	cyclictest	4077776	-21	CPU		6
353985	99	36	8,27	cyclictest	0	-21	swapper/8	23:14:58	18
353969	99	36	31,5	cyclictest	0	-21	swapper/3	21:19:58	13
353969	99	36	2,33	cyclictest	0	-21	swapper/3	22:56:59	13
353967	99	36	33,2	cyclictest	4077777	-21	CPU		12
353554	2	36	32,2	sleep18	0	-21	swapper/18	19:09:35	10
354017	99	35	35,0	cyclictest	0	-21	swapper/19	23:10:58	11
354014	99	35	0,34	cyclictest	0	-21	swapper/18	22:31:58	10
354014	99	35	0,34	cyclictest	0	-21	swapper/18	22:31:58	10
354010	99	35	6,28	cyclictest	376035	-40	tracker-miner-f	19:35:00	9
354010	99	35	6,28	cyclictest	376035	-40	tracker-miner-f	19:34:59	9
354008	99	35	0,1	cyclictest	4077777	-21	CPU		8
354008	99	35	0,1	cyclictest	4077777	-21	CPU		8
354005	99	35	0,34	cyclictest	4077719	-21	qemu-system-x86	21:34:59	7
353990	99	35	30,4	cyclictest	0	-21	swapper/10	22:34:58	2
353990	99	35	30,4	cyclictest	0	-21	swapper/10	22:34:58	2
353990	99	35	0,33	cyclictest	589785	-40	tracker-miner-f	23:44:58	2
353988	99	35	33,1	cyclictest	4077777	-21	CPU		19
353988	99	35	33,1	cyclictest	4077776	-21	CPU		19
353988	99	35	1,33	cyclictest	4077777	-21	CPU		19
353985	99	35	0,34	cyclictest	0	-21	swapper/8	23:39:58	18
353978	99	35	0,34	cyclictest	624256	-40	tracker-miner-f	00:24:59	16
353978	99	35	0,34	cyclictest	0	-21	swapper/6	21:26:59	16
353975	99	35	0,34	cyclictest	0	-21	swapper/5	21:46:58	15
353973	99	35	33,1	cyclictest	4077776	-21	CPU		14
353967	99	35	0,33	cyclictest	0	-21	swapper/2	23:48:59	12
353963	99	35	0,34	cyclictest	0	-21	swapper/1	21:27:59	1
353958	99	35	1,2	cyclictest	4077777	-21	CPU		0
354017	99	34	32,1	cyclictest	4077777	-21	CPU		11
354017	99	34	32,1	cyclictest	4077776	-21	CPU		11
354014	99	34	34,0	cyclictest	0	-21	swapper/18	00:35:59	10
354014	99	34	33,1	cyclictest	0	-21	swapper/18	22:11:59	10
354014	99	34	33,0	cyclictest	0	-21	swapper/18	00:15:58	10
354014	99	34	32,1	cyclictest	4077777	-21	CPU		10
354014	99	34	32,1	cyclictest	0	-21	swapper/18	21:05:58	10
354014	99	34	0,33	cyclictest	0	-21	swapper/18	23:26:59	10
354014	99	34	0,1	cyclictest	4077776	-21	CPU		10
354014	99	34	0,0	cyclictest	0	-21	swapper/18	00:14:59	10
354008	99	34	28,5	cyclictest	0	-21	swapper/16	22:57:58	8
354005	99	34	0,33	cyclictest	0	-21	swapper/15	21:52:59	7
353999	99	34	32,1	cyclictest	4077777	-21	CPU		5
353999	99	34	32,1	cyclictest	4077777	-21	CPU		5
353999	99	34	32,1	cyclictest	4077776	-21	CPU		5
353999	99	34	0,33	cyclictest	0	-21	swapper/13	22:27:58	5
353996	99	34	0,33	cyclictest	4077777	-21	CPU		4
353996	99	34	0,33	cyclictest	0	-21	swapper/12	22:15:58	4
353996	99	34	0,33	cyclictest	0	-21	swapper/12	00:16:59	4
353990	99	34	0,2	cyclictest	637015	-40	tracker-miner-f	00:39:59	2
353985	99	34	34,0	cyclictest	0	-21	swapper/8	21:47:59	18
353978	99	34	0,33	cyclictest	0	-21	swapper/6	20:46:58	16
353975	99	34	0,33	cyclictest	4077777	-21	CPU		15
353973	99	34	32,1	cyclictest	4077776	-21	CPU		14
353973	99	34	32,1	cyclictest	4077776	-21	CPU		14
353973	99	34	32,1	cyclictest	4077776	-21	CPU		14
353973	99	34	0,33	cyclictest	0	-21	swapper/4	22:31:59	14
353973	99	34	0,33	cyclictest	0	-21	swapper/4	22:31:58	14
353973	99	34	0,33	cyclictest	0	-21	swapper/4	22:03:58	14
353967	99	34	32,1	cyclictest	551165	-40	tracker-miner-f	22:56:59	12
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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