OSADL QA Farm on Real-time of Mainline Linux

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

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.

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 r0s0s.osadl.org (updated Mon Apr 06, 2026 12:46:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1419717	2	296	260,28	sleep0	0	-21	swapper/0	07:07:23	0
1419855	2	290	270,13	sleep7	0	-21	swapper/7	07:09:15	7
1418247	2	289	277,7	sleep2	0	-21	swapper/2	07:05:16	2
1419783	2	288	269,12	sleep6	0	-21	swapper/6	07:08:17	6
1419646	2	287	268,12	sleep4	0	-21	swapper/4	07:06:22	4
1419827	2	286	267,12	sleep1	0	-21	swapper/1	07:08:53	1
1419609	2	286	267,12	sleep3	0	-21	swapper/3	07:05:49	3
1419602	2	286	266,13	sleep5	0	-21	swapper/5	07:05:43	5
1420387	99	35	30,4	cyclictest	449069	-21	snmpd	09:00:07	7
1420387	99	34	0,31	cyclictest	0	-21	swapper/7	08:26:51	7
1420387	99	33	31,1	cyclictest	1492876	-21	smartctl	09:30:13	7
1420387	99	33	30,3	cyclictest	449069	-21	snmpd	08:32:36	7
1420387	99	33	30,2	cyclictest	449069	-21	snmpd	12:18:28	7
1420387	99	33	30,2	cyclictest	449069	-21	snmpd	10:52:34	7
1420387	99	33	30,2	cyclictest	449069	-21	snmpd	09:06:01	7
1420387	99	33	30,2	cyclictest	1426776	-21	cat	07:20:14	7
1420387	99	33	29,4	cyclictest	449069	-21	snmpd	11:01:03	7
1420387	99	33	27,5	cyclictest	1505430	-21	cat	09:55:15	7
1420387	99	33	0,30	cyclictest	0	-21	swapper/7	10:25:30	7
1420387	99	33	0,1	cyclictest	0	-21	swapper/7	12:34:02	7
1420387	99	33	0,1	cyclictest	0	-21	swapper/7	12:34:02	7
1420386	99	33	30,2	cyclictest	449069	-21	snmpd	10:45:10	6
1420386	99	33	30,2	cyclictest	449069	-21	snmpd	10:05:54	6
1420386	99	33	30,2	cyclictest	449069	-21	snmpd	07:50:05	6
1420386	99	33	30,2	cyclictest	1497965	-21	cat	09:40:12	6
1420385	99	33	0,30	cyclictest	0	-21	swapper/5	12:31:43	5
1420385	99	33	0,30	cyclictest	0	-21	swapper/5	12:31:43	5
1420384	99	33	31,1	cyclictest	1559312	-21	ntpq	11:40:24	4
1420384	99	33	28,3	cyclictest	1503397	-21	ntpq	09:50:24	4
1420383	99	33	30,2	cyclictest	449069	-21	snmpd	11:07:56	3
1420383	99	33	30,2	cyclictest	449069	-21	snmpd	07:53:56	3
1420382	99	33	30,2	cyclictest	449069	-21	snmpd	10:25:24	2
1420382	99	33	30,2	cyclictest	449069	-21	snmpd	10:10:06	2
1420382	99	33	30,2	cyclictest	449069	-21	snmpd	10:00:18	2
1420382	99	33	0,30	cyclictest	0	-21	swapper/2	07:25:15	2
1420381	99	33	30,2	cyclictest	449069	-21	snmpd	11:38:05	1
1420380	99	33	23,3	cyclictest	449069	-21	snmpd	10:15:12	0
1420380	99	33	0,30	cyclictest	0	-21	swapper/0	10:59:34	0
1420380	99	33	0,30	cyclictest	0	-21	swapper/0	10:48:04	0
1420387	99	32	29,2	cyclictest	449069	-21	snmpd	07:13:34	7
1420387	99	32	0,31	cyclictest	0	-21	swapper/7	11:30:29	7
1420387	99	32	0,31	cyclictest	0	-21	swapper/7	10:15:03	7
1420386	99	32	30,2	cyclictest	449069	-21	snmpd	08:26:06	6
1420386	99	32	30,1	cyclictest	449069	-21	snmpd	09:13:52	6
1420386	99	32	29,2	cyclictest	1548790	-21	cat	11:20:15	6
1420386	99	32	0,31	cyclictest	0	-21	swapper/6	12:25:31	6
1420385	99	32	30,2	cyclictest	449069	-21	snmpd	12:08:55	5
1420385	99	32	30,2	cyclictest	449069	-21	snmpd	09:56:17	5
1420385	99	32	30,2	cyclictest	449069	-21	snmpd	08:16:00	5
1420385	99	32	30,2	cyclictest	1536015	-21	cat	10:55:15	5
1420384	99	32	30,2	cyclictest	449069	-21	snmpd	11:35:25	4
1420384	99	32	30,2	cyclictest	449069	-21	snmpd	09:12:43	4
1420384	99	32	30,2	cyclictest	1541005	-21	cat	11:05:14	4
1420383	99	32	30,1	cyclictest	449069	-21	snmpd	12:34:08	3
1420383	99	32	30,1	cyclictest	449069	-21	snmpd	12:34:07	3
1420383	99	32	30,1	cyclictest	449069	-21	snmpd	12:16:19	3
1420383	99	32	30,1	cyclictest	449069	-21	snmpd	09:09:25	3
1420383	99	32	29,2	cyclictest	449069	-21	snmpd	08:58:40	3
1420383	99	32	0,31	cyclictest	871	-21	runrttasks	07:13:37	3
1420383	99	32	0,31	cyclictest	0	-21	swapper/3	12:25:10	3
1420383	99	32	0,31	cyclictest	0	-21	swapper/3	12:24:27	3
1420383	99	32	0,31	cyclictest	0	-21	swapper/3	09:22:38	3
1420383	99	32	0,31	cyclictest	0	-21	swapper/3	07:24:16	3
1420382	99	32	30,2	cyclictest	449069	-21	snmpd	08:11:50	2
1420382	99	32	30,1	cyclictest	449069	-21	snmpd	10:51:49	2
1420382	99	32	29,2	cyclictest	449069	-21	snmpd	11:20:20	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	12:00:42	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	10:45:36	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	10:37:13	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	10:37:12	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	08:56:04	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	07:53:38	2
1420382	99	32	0,30	cyclictest	0	-21	swapper/2	07:22:34	2
1420381	99	32	28,3	cyclictest	449069	-21	snmpd	08:31:30	1
1420381	99	32	0,31	cyclictest	0	-21	swapper/1	11:45:15	1
1420380	99	32	30,2	cyclictest	1541027	-21	cat	11:05:15	0
1420380	99	32	30,1	cyclictest	449069	-21	snmpd	10:31:43	0
1420380	99	32	0,31	cyclictest	0	-21	swapper/0	09:26:11	0
1420380	99	32	0,31	cyclictest	0	-21	swapper/0	07:39:05	0
1420380	99	32	0,30	cyclictest	0	-21	swapper/0	11:51:57	0
1420380	99	32	0,30	cyclictest	0	-21	swapper/0	08:49:46	0
1420380	99	32	0,30	cyclictest	0	-21	swapper/0	08:49:46	0
1420387	99	31	30,1	cyclictest	449069	-21	snmpd	10:46:24	7
1420387	99	31	30,1	cyclictest	449069	-21	snmpd	08:37:36	7
1420387	99	31	30,1	cyclictest	449069	-21	snmpd	07:43:23	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	12:35:26	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	12:35:25	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	12:28:16	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	12:21:40	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	11:56:15	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	11:05:32	7
1420387	99	31	0,30	cyclictest	0	-21	swapper/7	09:52:59	7
1420387	99	31	0,1	cyclictest	0	-21	swapper/7	12:13:09	7
1420387	99	31	0,1	cyclictest	0	-21	swapper/7	09:16:46	7
1420387	99	31	0,1	cyclictest	0	-21	swapper/7	08:58:43	7
1420386	99	31	30,1	cyclictest	449069	-21	snmpd	11:53:30	6
1420386	99	31	30,1	cyclictest	449069	-21	snmpd	09:55:56	6
1420386	99	31	29,1	cyclictest	449069	-21	snmpd	12:11:22	6
1420386	99	31	29,1	cyclictest	449069	-21	snmpd	11:16:44	6
1420386	99	31	0,30	cyclictest	0	-21	swapper/6	11:27:59	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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