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 Tue Jun 09, 2026 00:46:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
723615	2	178	162,10	sleep10	0	-21	swapper/10	19:07:26	2
724323	99	80	5,31	cyclictest	0	-21	swapper/17	23:08:12	9
724321	99	58	0,56	cyclictest	4077777	-21	CPU		8
723432	2	55	50,3	sleep3	0	-21	swapper/3	19:05:40	13
724321	99	54	21,32	cyclictest	758941	-40	tracker-miner-f	19:46:59	8
723806	2	49	44,3	sleep15	0	-21	swapper/15	19:09:12	7
723771	2	49	44,3	sleep12	0	-21	swapper/12	19:08:49	4
723866	2	47	43,2	sleep11	0	-21	swapper/11	19:09:47	3
724266	99	46	18,3	cyclictest	0	-21	swapper/0	19:46:59	0
723689	2	46	41,3	sleep7	0	-21	swapper/7	19:08:04	17
723518	2	45	40,3	sleep18	0	-21	swapper/18	19:06:34	10
2083	98	44	0,40	rtkit-daemon	0	-21	swapper/5	19:06:57	15
724312	99	43	14,6	cyclictest	0	-21	swapper/13	19:39:58	5
723628	2	43	40,2	sleep13	0	-21	swapper/13	19:07:30	5
723595	2	43	37,4	sleep17	0	-21	swapper/17	19:07:14	9
723736	2	41	36,3	sleep8	0	-21	swapper/8	19:08:24	18
720500	2	41	39,1	sleep14	0	-21	swapper/14	19:05:11	6
724323	99	40	0,2	cyclictest	972827	-40	tracker-miner-f	23:55:59	9
724323	99	40	0,0	cyclictest	0	-21	swapper/17	21:51:59	9
724321	99	40	33,7	cyclictest	0	-21	swapper/16	00:16:58	8
724321	99	40	32,7	cyclictest	4077776	-21	CPU		8
724312	99	40	0,40	cyclictest	0	-21	swapper/13	21:24:58	5
724312	99	40	0,37	cyclictest	0	-21	swapper/13	19:25:27	5
723422	2	40	34,3	sleep16	0	-21	swapper/16	19:05:33	8
724321	99	39	31,8	cyclictest	874950	-40	tracker-miner-f	22:04:59	8
724321	99	39	17,2	cyclictest	994652	-40	tracker-miner-f	00:23:04	8
724312	99	39	30,8	cyclictest	4077777	-21	CPU		5
724266	99	39	30,5	cyclictest	0	-21	swapper/0	22:20:59	0
723520	2	39	34,3	sleep19	0	-21	swapper/19	19:06:35	11
724323	99	38	30,8	cyclictest	0	-21	swapper/17	21:45:59	9
724321	99	38	32,5	cyclictest	827490	-40	tracker-miner-f	21:07:58	8
724312	99	38	6,31	cyclictest	0	-21	swapper/13	20:50:59	5
724296	99	38	2,35	cyclictest	0	-21	swapper/8	23:38:59	18
723849	2	38	33,3	sleep6	0	-21	swapper/6	19:09:43	16
724312	99	37	0,37	cyclictest	0	-21	swapper/13	22:26:09	5
724266	99	37	29,5	cyclictest	0	-21	swapper/0	22:04:59	0
724266	99	37	0,34	cyclictest	0	-21	swapper/0	21:13:59	0
724328	99	36	0,35	cyclictest	0	-21	swapper/18	21:12:59	10
724312	99	36	28,8	cyclictest	0	-21	swapper/13	00:13:58	5
724312	99	36	28,8	cyclictest	0	-21	swapper/13	00:13:58	5
724312	99	36	0,35	cyclictest	0	-21	swapper/13	22:36:59	5
724312	99	36	0,2	cyclictest	0	-21	swapper/13	21:19:59	5
724296	99	36	0,35	cyclictest	4077777	-21	CPU		18
723472	2	36	33,2	sleep4	0	-21	swapper/4	19:06:01	14
720492	2	36	30,3	sleep9	0	-21	swapper/9	19:05:05	19
2278	99	36	0,30	ntpd	0	-21	swapper/0	19:05:21	0
724330	99	35	0,35	cyclictest	0	-21	swapper/19	19:23:58	11
724328	99	35	0,1	cyclictest	4077777	-21	CPU		10
724314	99	35	0,34	cyclictest	866235	-40	tracker-miner-f	21:53:59	6
724314	99	35	0,34	cyclictest	4077776	-21	CPU		6
724296	99	35	0,35	cyclictest	0	-21	swapper/8	21:18:58	18
724296	99	35	0,0	cyclictest	0	-21	swapper/8	21:32:58	18
724287	99	35	33,1	cyclictest	4077777	-21	CPU		15
724282	99	35	0,34	cyclictest	844430	-40	tracker-miner-f	21:25:59	14
724282	99	35	0,34	cyclictest	844430	-40	tracker-miner-f	21:25:59	14
724279	99	35	0,1	cyclictest	4077776	-21	CPU		13
724275	99	35	33,1	cyclictest	4077776	-21	CPU		12
724266	99	35	30,3	cyclictest	0	-21	swapper/0	00:16:58	0
723837	2	35	30,3	sleep2	0	-21	swapper/2	19:09:39	12
724323	99	34	29,5	cyclictest	0	-21	swapper/17	23:21:58	9
724323	99	34	0,33	cyclictest	4077777	-21	CPU		9
724318	99	34	32,1	cyclictest	0	-21	swapper/15	21:49:59	7
724318	99	34	0,1	cyclictest	4077776	-21	CPU		7
724314	99	34	0,33	cyclictest	4077777	-21	CPU		6
724314	99	34	0,1	cyclictest	4077777	-21	CPU		6
724312	99	34	3,30	cyclictest	0	-21	swapper/13	19:46:58	5
724312	99	34	0,33	cyclictest	0	-21	swapper/13	23:10:56	5
724312	99	34	0,33	cyclictest	0	-21	swapper/13	19:30:59	5
724312	99	34	0,32	cyclictest	0	-21	swapper/13	21:47:58	5
724312	99	34	0,31	cyclictest	0	-21	swapper/13	20:46:23	5
724309	99	34	0,33	cyclictest	0	-21	swapper/12	00:35:59	4
724309	99	34	0,33	cyclictest	0	-21	swapper/12	00:34:58	4
724299	99	34	31,2	cyclictest	925969	-40	tracker-miner-f	23:01:59	19
724296	99	34	34,0	cyclictest	0	-21	swapper/8	22:58:59	18
724296	99	34	34,0	cyclictest	0	-21	swapper/8	20:21:58	18
724296	99	34	33,1	cyclictest	4077719	-21	qemu-system-x86	22:08:58	18
724296	99	34	32,1	cyclictest	4077777	-21	CPU		18
724296	99	34	0,33	cyclictest	0	-21	swapper/8	22:30:58	18
724296	99	34	0,0	cyclictest	0	-21	swapper/8	00:17:59	18
724292	99	34	0,1	cyclictest	0	-21	swapper/7	23:45:58	17
724289	99	34	33,1	cyclictest	3760907	-21	gnome-shell	00:15:58	16
724289	99	34	0,34	cyclictest	848850	-40	tracker-miner-f	21:31:59	16
724282	99	34	32,1	cyclictest	4077776	-21	CPU		14
724282	99	34	0,33	cyclictest	0	-21	swapper/4	20:49:59	14
724279	99	34	33,0	cyclictest	0	-21	swapper/3	00:09:59	13
724279	99	34	0,33	cyclictest	4077776	-21	CPU		13
724279	99	34	0,33	cyclictest	0	-21	swapper/3	22:53:59	13
724279	99	34	0,33	cyclictest	0	-21	swapper/3	22:32:59	13
724266	99	34	0,33	cyclictest	3760907	-21	gnome-shell	23:48:58	0
724330	99	33	0,0	cyclictest	0	-21	swapper/19	23:03:48	11
724330	99	33	0,0	cyclictest	0	-21	swapper/19	21:43:59	11
724328	99	33	31,1	cyclictest	4077776	-21	CPU		10
724323	99	33	0,33	cyclictest	0	-21	swapper/17	23:11:58	9
724323	99	33	0,33	cyclictest	0	-21	swapper/17	22:03:59	9
724318	99	33	33,0	cyclictest	0	-21	swapper/15	22:02:59	7
724318	99	33	0,33	cyclictest	0	-21	swapper/15	20:53:54	7
724314	99	33	32,1	cyclictest	801668	-40	tracker-miner-f	20:36:58	6
724314	99	33	0,33	cyclictest	0	-21	swapper/14	23:44:59	6
724314	99	33	0,33	cyclictest	0	-21	swapper/14	23:30:59	6
724314	99	33	0,32	cyclictest	0	-21	swapper/14	23:56:59	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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