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 Sat Mar 14, 2026 12:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
295875	2	297	261,28	sleep0	0	-21	swapper/0	07:07:58	0
293921	2	293	258,27	sleep4	0	-21	swapper/4	07:05:05	4
294894	2	292	285,4	sleep2	0	-21	swapper/2	07:05:28	2
295951	2	287	267,13	sleep1	0	-21	swapper/1	07:09:03	1
295910	2	287	267,13	sleep5	0	-21	swapper/5	07:08:28	5
295751	2	287	267,13	sleep6	0	-21	swapper/6	07:06:12	6
293924	2	287	266,13	sleep7	0	-21	swapper/7	07:05:08	7
293920	2	286	267,12	sleep3	0	-21	swapper/3	07:05:03	3
296497	99	35	30,4	cyclictest	449069	-21	snmpd	10:45:18	6
296497	99	35	30,4	cyclictest	449069	-21	snmpd	10:07:51	6
296497	99	34	29,4	cyclictest	449069	-21	snmpd	08:17:12	6
296492	99	34	0,31	cyclictest	0	-21	swapper/4	08:49:51	4
296492	99	34	0,31	cyclictest	0	-21	swapper/4	07:25:29	4
296492	99	34	0,31	cyclictest	0	-21	swapper/4	07:25:28	4
296497	99	33	30,2	cyclictest	449069	-21	snmpd	10:53:40	6
296497	99	33	30,2	cyclictest	449069	-21	snmpd	09:05:18	6
296497	99	33	0,30	cyclictest	0	-21	swapper/6	12:12:30	6
296497	99	33	0,30	cyclictest	0	-21	swapper/6	09:20:11	6
296497	99	33	0,30	cyclictest	0	-21	swapper/6	09:20:10	6
296495	99	33	30,2	cyclictest	451799	-21	cat	12:15:13	5
296495	99	33	30,2	cyclictest	449069	-21	snmpd	10:12:05	5
296495	99	33	30,2	cyclictest	449069	-21	snmpd	07:29:35	5
296495	99	33	30,2	cyclictest	449069	-21	snmpd	07:29:34	5
296495	99	33	30,2	cyclictest	449069	-21	snmpd	07:11:03	5
296492	99	33	30,2	cyclictest	449069	-21	snmpd	10:46:40	4
296492	99	33	30,2	cyclictest	449069	-21	snmpd	07:47:43	4
296492	99	33	30,2	cyclictest	408961	-21	cat	10:50:15	4
296492	99	33	0,30	cyclictest	0	-21	swapper/4	10:31:42	4
296489	99	33	31,2	cyclictest	423319	-21	kworker/u16:1+flush-8:0	11:25:26	3
296489	99	33	0,1	cyclictest	0	-21	swapper/3	07:52:17	3
296486	99	33	33,0	cyclictest	0	-21	swapper/2	12:15:19	2
296481	99	33	0,31	cyclictest	0	-21	swapper/0	08:59:51	0
296481	99	33	0,30	cyclictest	0	-21	swapper/0	11:16:58	0
296499	99	32	30,2	cyclictest	449069	-21	snmpd	08:13:26	7
296499	99	32	30,2	cyclictest	449069	-21	snmpd	07:57:53	7
296499	99	32	30,2	cyclictest	413976	-21	cat	11:00:16	7
296499	99	32	0,31	cyclictest	0	-21	swapper/7	10:02:05	7
296497	99	32	30,1	cyclictest	449069	-21	snmpd	11:30:02	6
296497	99	32	30,1	cyclictest	449069	-21	snmpd	08:50:46	6
296497	99	32	29,2	cyclictest	449069	-21	snmpd	12:15:29	6
296497	99	32	0,30	cyclictest	0	-21	swapper/6	09:41:19	6
296495	99	32	30,2	cyclictest	449069	-21	snmpd	11:33:29	5
296495	99	32	30,2	cyclictest	449069	-21	snmpd	07:23:25	5
296495	99	32	29,2	cyclictest	396168	-21	cat	10:25:15	5
296495	99	32	29,2	cyclictest	312976	-21	cat	07:40:16	5
296495	99	32	28,2	cyclictest	453733	-21	apt	12:20:11	5
296492	99	32	30,1	cyclictest	449069	-21	snmpd	07:24:31	4
296492	99	32	29,2	cyclictest	449069	-21	snmpd	10:12:38	4
296492	99	32	29,2	cyclictest	449069	-21	snmpd	08:02:05	4
296492	99	32	0,31	cyclictest	0	-21	swapper/4	09:47:14	4
296489	99	32	30,2	cyclictest	449069	-21	snmpd	12:22:42	3
296489	99	32	30,2	cyclictest	449069	-21	snmpd	12:06:08	3
296489	99	32	30,2	cyclictest	449069	-21	snmpd	11:06:03	3
296489	99	32	30,2	cyclictest	449069	-21	snmpd	07:22:56	3
296489	99	32	30,1	cyclictest	449069	-21	snmpd	09:28:31	3
296489	99	32	29,3	cyclictest	449069	-21	snmpd	09:43:55	3
296489	99	32	0,31	cyclictest	0	-21	swapper/3	09:10:14	3
296489	99	32	0,31	cyclictest	0	-21	swapper/3	07:15:03	3
296486	99	32	32,0	cyclictest	0	-21	swapper/2	11:21:17	2
296486	99	32	30,2	cyclictest	449069	-21	snmpd	09:25:22	2
296483	99	32	30,1	cyclictest	449069	-21	snmpd	12:38:48	1
296483	99	32	29,2	cyclictest	449069	-21	snmpd	09:06:46	1
296483	99	32	0,31	cyclictest	0	-21	swapper/1	07:23:10	1
296481	99	32	30,2	cyclictest	449069	-21	snmpd	09:05:27	0
296481	99	32	29,2	cyclictest	449069	-21	snmpd	09:59:06	0
296481	99	32	29,2	cyclictest	449069	-21	snmpd	09:39:14	0
296481	99	32	29,2	cyclictest	449069	-21	snmpd	09:10:21	0
296481	99	32	0,31	cyclictest	0	-21	swapper/0	09:54:49	0
298491	2	31	28,2	sleep7	449069	-21	snmpd	07:13:19	7
296499	99	31	30,1	cyclictest	449069	-21	snmpd	12:35:51	7
296499	99	31	30,1	cyclictest	449069	-21	snmpd	12:29:54	7
296499	99	31	30,1	cyclictest	449069	-21	snmpd	10:33:41	7
296499	99	31	29,2	cyclictest	449069	-21	snmpd	11:32:01	7
296499	99	31	29,2	cyclictest	449069	-21	snmpd	11:05:46	7
296499	99	31	29,2	cyclictest	449069	-21	snmpd	07:53:53	7
296499	99	31	28,2	cyclictest	449069	-21	snmpd	11:35:11	7
296499	99	31	0,30	cyclictest	0	-21	swapper/7	11:40:04	7
296499	99	31	0,30	cyclictest	0	-21	swapper/7	09:49:44	7
296499	99	31	0,30	cyclictest	0	-21	swapper/7	07:39:16	7
296499	99	31	0,1	cyclictest	0	-21	swapper/7	12:02:39	7
296499	99	31	0,1	cyclictest	0	-21	swapper/7	09:40:46	7
296499	99	31	0,1	cyclictest	0	-21	swapper/7	08:31:15	7
296499	99	31	0,1	cyclictest	0	-21	swapper/7	07:15:06	7
296497	99	31	30,1	cyclictest	449069	-21	snmpd	11:28:52	6
296497	99	31	30,1	cyclictest	449069	-21	snmpd	10:17:26	6
296497	99	31	30,1	cyclictest	449069	-21	snmpd	07:30:55	6
296497	99	31	30,1	cyclictest	449069	-21	snmpd	07:30:55	6
296497	99	31	29,1	cyclictest	449069	-21	snmpd	12:24:54	6
296497	99	31	29,1	cyclictest	449069	-21	snmpd	11:00:13	6
296497	99	31	28,2	cyclictest	449069	-21	snmpd	11:57:27	6
296497	99	31	28,2	cyclictest	449069	-21	snmpd	10:59:06	6
296497	99	31	28,2	cyclictest	449069	-21	snmpd	08:09:41	6
296497	99	31	25,5	cyclictest	449069	-21	snmpd	11:20:47	6
296497	99	31	0,31	cyclictest	0	-21	swapper/6	09:28:58	6
296497	99	31	0,30	cyclictest	0	-21	swapper/6	12:38:36	6
296497	99	31	0,30	cyclictest	0	-21	swapper/6	10:25:48	6
296495	99	31	30,1	cyclictest	449069	-21	snmpd	11:56:46	5
296495	99	31	30,1	cyclictest	449069	-21	snmpd	10:18:24	5
296495	99	31	30,1	cyclictest	449069	-21	snmpd	08:57:25	5
296495	99	31	30,1	cyclictest	449069	-21	snmpd	08:54:21	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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