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
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.

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 Fri Apr 17, 2026 12:46:23)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1652910	2	292	258,26	sleep0	0	-21	swapper/0	07:09:44	0
1652854	2	292	258,26	sleep2	0	-21	swapper/2	07:08:57	2
1652681	2	290	257,25	sleep1	0	-21	swapper/1	07:06:31	1
1652897	2	289	269,13	sleep7	0	-21	swapper/7	07:09:35	7
1652857	2	288	268,13	sleep5	0	-21	swapper/5	07:09:00	5
1652922	2	287	267,13	sleep3	0	-21	swapper/3	07:09:55	3
1652628	2	287	268,12	sleep6	0	-21	swapper/6	07:05:48	6
1652635	2	286	266,13	sleep4	0	-21	swapper/4	07:05:53	4
1653402	99	34	30,3	cyclictest	449069	-21	snmpd	10:51:00	3
1653399	99	34	31,3	cyclictest	1643029	-21	kworker/0:0+events	08:20:19	0
1653405	99	33	30,2	cyclictest	449069	-21	snmpd	10:55:52	6
1653405	99	33	30,2	cyclictest	449069	-21	snmpd	08:05:08	6
1653404	99	33	30,2	cyclictest	449069	-21	snmpd	12:06:18	5
1653404	99	33	30,2	cyclictest	1733151	-21	cat	09:45:15	5
1653404	99	33	30,2	cyclictest	1657277	-21	cat	07:15:16	5
1653402	99	33	30,3	cyclictest	449069	-21	snmpd	12:22:09	3
1653402	99	33	30,2	cyclictest	449069	-21	snmpd	11:25:32	3
1653402	99	33	30,2	cyclictest	449069	-21	snmpd	07:30:44	3
1653402	99	33	1,31	cyclictest	0	-21	swapper/3	11:16:48	3
1653400	99	33	30,2	cyclictest	449069	-21	snmpd	12:18:20	1
1653400	99	33	30,2	cyclictest	449069	-21	snmpd	11:47:28	1
1653400	99	33	30,2	cyclictest	1801206	-21	cat	12:00:13	1
1653400	99	33	30,2	cyclictest	1801206	-21	cat	12:00:12	1
1653406	99	32	30,2	cyclictest	449069	-21	snmpd	11:24:31	7
1653406	99	32	30,2	cyclictest	449069	-21	snmpd	10:16:08	7
1653406	99	32	30,2	cyclictest	449069	-21	snmpd	08:57:21	7
1653406	99	32	30,2	cyclictest	449069	-21	snmpd	08:45:42	7
1653406	99	32	30,2	cyclictest	1677295	-21	cat	07:55:17	7
1653406	99	32	1,30	cyclictest	0	-21	swapper/7	08:37:59	7
1653406	99	32	0,31	cyclictest	0	-21	swapper/7	10:52:03	7
1653406	99	32	0,31	cyclictest	0	-21	swapper/7	07:26:24	7
1653406	99	32	0,30	cyclictest	0	-21	swapper/7	08:09:23	7
1653405	99	32	30,2	cyclictest	449069	-21	snmpd	07:37:13	6
1653405	99	32	29,3	cyclictest	449069	-21	snmpd	08:48:37	6
1653405	99	32	29,3	cyclictest	449069	-21	snmpd	07:12:09	6
1653404	99	32	30,1	cyclictest	449069	-21	snmpd	08:32:36	5
1653404	99	32	29,2	cyclictest	449069	-21	snmpd	07:38:14	5
1653404	99	32	29,2	cyclictest	1697609	-21	cat	08:35:15	5
1653404	99	32	0,31	cyclictest	0	-21	swapper/5	11:04:28	5
1653404	99	32	0,31	cyclictest	0	-21	swapper/5	09:35:31	5
1653404	99	32	0,31	cyclictest	0	-21	swapper/5	09:25:31	5
1653404	99	32	0,31	cyclictest	0	-21	swapper/5	07:58:22	5
1653404	99	32	0,30	cyclictest	0	-21	swapper/5	12:12:17	5
1653404	99	32	0,30	cyclictest	0	-21	swapper/5	09:33:29	5
1653403	99	32	30,2	cyclictest	449069	-21	snmpd	12:34:57	4
1653403	99	32	30,2	cyclictest	449069	-21	snmpd	11:46:43	4
1653403	99	32	30,2	cyclictest	449069	-21	snmpd	10:32:14	4
1653403	99	32	30,2	cyclictest	449069	-21	snmpd	07:21:40	4
1653403	99	32	30,2	cyclictest	449069	-21	snmpd	07:13:22	4
1653403	99	32	30,2	cyclictest	1763666	-21	cat	10:45:14	4
1653403	99	32	0,31	cyclictest	0	-21	swapper/4	08:07:28	4
1653402	99	32	30,1	cyclictest	449069	-21	snmpd	08:50:27	3
1653402	99	32	29,2	cyclictest	449069	-21	snmpd	10:27:35	3
1653402	99	32	29,2	cyclictest	449069	-21	snmpd	08:19:12	3
1653402	99	32	29,2	cyclictest	449069	-21	snmpd	08:19:11	3
1653402	99	32	29,2	cyclictest	449069	-21	snmpd	07:25:09	3
1653402	99	32	0,31	cyclictest	0	-21	swapper/3	11:49:19	3
1653402	99	32	0,31	cyclictest	0	-21	swapper/3	10:37:14	3
1653402	99	32	0,31	cyclictest	0	-21	swapper/3	07:55:17	3
1653401	99	32	30,2	cyclictest	449069	-21	snmpd	11:57:37	2
1653401	99	32	30,2	cyclictest	449069	-21	snmpd	10:32:30	2
1653401	99	32	30,2	cyclictest	449069	-21	snmpd	09:02:21	2
1653401	99	32	30,2	cyclictest	1702867	-21	cat	08:45:15	2
1653401	99	32	0,31	cyclictest	0	-21	swapper/2	11:25:40	2
1653400	99	32	29,2	cyclictest	449069	-21	snmpd	10:42:08	1
1653400	99	32	29,2	cyclictest	449069	-21	snmpd	07:54:58	1
1653400	99	32	29,2	cyclictest	1733164	-21	cat	09:45:14	1
1653400	99	32	0,31	cyclictest	0	-21	swapper/1	07:20:25	1
1653400	99	32	0,30	cyclictest	0	-21	swapper/1	11:06:58	1
1653399	99	32	31,1	cyclictest	1643029	-21	kworker/0:0+events	10:46:00	0
1653399	99	32	30,2	cyclictest	449069	-21	snmpd	10:30:26	0
1653399	99	32	30,2	cyclictest	449069	-21	snmpd	10:19:05	0
1653399	99	32	30,2	cyclictest	449069	-21	snmpd	08:13:44	0
1653399	99	32	30,2	cyclictest	1643029	-21	kworker/0:0+events	09:10:18	0
1653399	99	32	0,31	cyclictest	0	-21	swapper/0	09:38:32	0
1653406	99	31	30,1	cyclictest	449069	-21	snmpd	09:53:11	7
1653406	99	31	30,1	cyclictest	449069	-21	snmpd	08:22:00	7
1653406	99	31	29,2	cyclictest	449069	-21	snmpd	10:27:09	7
1653406	99	31	29,2	cyclictest	1771231	-21	cat	11:00:14	7
1653406	99	31	0,30	cyclictest	0	-21	swapper/7	12:22:08	7
1653406	99	31	0,30	cyclictest	0	-21	swapper/7	09:09:36	7
1653406	99	31	0,30	cyclictest	0	-21	swapper/7	08:50:04	7
1653406	99	31	0,30	cyclictest	0	-21	swapper/7	07:33:52	7
1653406	99	31	0,30	cyclictest	0	-21	swapper/7	07:15:05	7
1653406	99	31	0,1	cyclictest	0	-21	swapper/7	12:37:10	7
1653406	99	31	0,1	cyclictest	0	-21	swapper/7	09:44:17	7
1653406	99	31	0,1	cyclictest	0	-21	swapper/7	07:25:01	7
1653405	99	31	30,1	cyclictest	449069	-21	snmpd	12:32:41	6
1653405	99	31	30,1	cyclictest	449069	-21	snmpd	12:25:20	6
1653405	99	31	30,1	cyclictest	449069	-21	snmpd	11:21:18	6
1653405	99	31	30,1	cyclictest	449069	-21	snmpd	10:04:50	6
1653405	99	31	30,1	cyclictest	449069	-21	snmpd	09:52:25	6
1653405	99	31	29,2	cyclictest	449069	-21	snmpd	11:57:43	6
1653405	99	31	29,1	cyclictest	449069	-21	snmpd	11:35:11	6
1653405	99	31	28,3	cyclictest	449069	-21	snmpd	08:17:30	6
1653405	99	31	28,3	cyclictest	449069	-21	snmpd	08:17:29	6
1653405	99	31	28,2	cyclictest	449069	-21	snmpd	10:42:57	6
1653405	99	31	28,2	cyclictest	449069	-21	snmpd	07:24:07	6
1653405	99	31	0,31	cyclictest	0	-21	swapper/6	08:33:14	6
1653405	99	31	0,1	cyclictest	0	-21	swapper/6	09:12:46	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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