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 Sun Apr 05, 2026 12:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
638295	2	304	266,30	sleep2	0	-21	swapper/2	07:07:49	2
638241	2	300	278,14	sleep4	0	-21	swapper/4	07:07:02	4
638219	2	294	277,10	sleep0	0	-21	swapper/0	07:06:41	0
638245	2	293	273,12	sleep6	0	-21	swapper/6	07:07:04	6
638151	2	292	258,26	sleep3	0	-21	swapper/3	07:05:48	3
638369	2	291	280,7	sleep1	0	-21	swapper/1	07:08:52	1
638395	2	289	268,13	sleep7	0	-21	swapper/7	07:09:14	7
638144	2	285	266,12	sleep5	0	-21	swapper/5	07:05:43	5
638924	99	43	39,3	cyclictest	680	-21	rs:main		2
638929	99	34	30,4	cyclictest	449069	-21	snmpd	10:01:17	7
638929	99	34	0,30	cyclictest	0	-21	swapper/7	11:11:53	7
638927	99	34	30,4	cyclictest	449069	-21	snmpd	11:33:00	5
638929	99	33	30,2	cyclictest	449069	-21	snmpd	09:46:25	7
638929	99	33	0,30	cyclictest	0	-21	swapper/7	07:13:12	7
638928	99	33	30,2	cyclictest	449069	-21	snmpd	11:39:21	6
638928	99	33	30,2	cyclictest	449069	-21	snmpd	10:52:13	6
638928	99	33	0,31	cyclictest	0	-21	swapper/6	07:26:55	6
638928	99	33	0,30	cyclictest	0	-21	swapper/6	09:17:58	6
638927	99	33	30,2	cyclictest	449069	-21	snmpd	12:35:01	5
638927	99	33	30,2	cyclictest	449069	-21	snmpd	11:04:47	5
638927	99	33	0,30	cyclictest	0	-21	swapper/5	10:45:55	5
638926	99	33	30,2	cyclictest	449069	-21	snmpd	12:21:06	4
638926	99	33	30,2	cyclictest	449069	-21	snmpd	09:22:55	4
638926	99	33	30,2	cyclictest	449069	-21	snmpd	08:49:45	4
638925	99	33	30,2	cyclictest	449069	-21	snmpd	08:09:32	3
638924	99	33	30,2	cyclictest	449069	-21	snmpd	11:41:00	2
638924	99	33	30,2	cyclictest	449069	-21	snmpd	11:41:00	2
638923	99	33	30,2	cyclictest	690640	-21	cat	08:50:15	1
638923	99	33	30,2	cyclictest	650317	-21	cat	07:30:15	1
638929	99	32	30,2	cyclictest	449069	-21	snmpd	07:16:43	7
638929	99	32	30,1	cyclictest	801537	-21	cat	12:30:13	7
638929	99	32	30,1	cyclictest	720652	-21	cat	09:50:15	7
638929	99	32	29,2	cyclictest	781019	-21	cat	11:50:16	7
638929	99	32	29,2	cyclictest	650325	-21	cat	07:30:15	7
638929	99	32	29,2	cyclictest	449069	-21	snmpd	10:45:04	7
638929	99	32	27,5	cyclictest	449069	-21	snmpd	07:51:19	7
638929	99	32	0,31	cyclictest	0	-21	swapper/7	10:57:28	7
638929	99	32	0,30	cyclictest	0	-21	swapper/7	09:07:07	7
638928	99	32	30,2	cyclictest	449069	-21	snmpd	08:38:30	6
638928	99	32	30,1	cyclictest	449069	-21	snmpd	10:35:25	6
638928	99	32	30,1	cyclictest	449069	-21	snmpd	08:48:51	6
638928	99	32	29,2	cyclictest	449069	-21	snmpd	11:50:57	6
638928	99	32	29,2	cyclictest	449069	-21	snmpd	09:20:01	6
638928	99	32	29,2	cyclictest	449069	-21	snmpd	08:21:23	6
638928	99	32	0,31	cyclictest	0	-21	swapper/6	12:23:26	6
638928	99	32	0,30	cyclictest	0	-21	swapper/6	12:18:51	6
638927	99	32	29,2	cyclictest	652814	-21	cat	07:35:15	5
638927	99	32	29,2	cyclictest	449069	-21	snmpd	11:20:23	5
638927	99	32	0,31	cyclictest	0	-21	swapper/5	11:45:14	5
638927	99	32	0,31	cyclictest	0	-21	swapper/5	11:45:14	5
638926	99	32	29,2	cyclictest	449069	-21	snmpd	11:47:33	4
638926	99	32	29,2	cyclictest	449069	-21	snmpd	11:47:33	4
638926	99	32	29,2	cyclictest	449069	-21	snmpd	07:28:34	4
638926	99	32	0,31	cyclictest	0	-21	swapper/4	07:34:58	4
638925	99	32	30,1	cyclictest	449069	-21	snmpd	07:22:19	3
638925	99	32	29,2	cyclictest	763474	-21	cat	11:15:14	3
638925	99	32	29,2	cyclictest	449069	-21	snmpd	11:11:14	3
638925	99	32	29,2	cyclictest	449069	-21	snmpd	09:18:34	3
638925	99	32	29,2	cyclictest	449069	-21	snmpd	07:48:40	3
638925	99	32	28,3	cyclictest	0	-21	swapper/3	10:40:22	3
638925	99	32	0,31	cyclictest	0	-21	swapper/3	12:37:20	3
638925	99	32	0,31	cyclictest	0	-21	swapper/3	12:16:57	3
638924	99	32	30,2	cyclictest	449069	-21	snmpd	08:33:33	2
638924	99	32	30,1	cyclictest	449069	-21	snmpd	08:59:30	2
638924	99	32	30,1	cyclictest	449069	-21	snmpd	08:22:53	2
638924	99	32	29,2	cyclictest	781000	-21	cat	11:50:16	2
638924	99	32	29,2	cyclictest	449069	-21	snmpd	12:28:47	2
638924	99	32	0,30	cyclictest	0	-21	swapper/2	09:15:49	2
638923	99	32	30,2	cyclictest	449069	-21	snmpd	12:36:29	1
638923	99	32	30,2	cyclictest	449069	-21	snmpd	12:29:35	1
638923	99	32	30,2	cyclictest	449069	-21	snmpd	10:52:52	1
638923	99	32	30,2	cyclictest	449069	-21	snmpd	08:16:14	1
638923	99	32	29,2	cyclictest	449069	-21	snmpd	09:03:45	1
638923	99	32	0,30	cyclictest	0	-21	swapper/1	09:24:07	1
638923	99	32	0,30	cyclictest	0	-21	swapper/1	08:36:48	1
638922	99	32	30,2	cyclictest	449069	-21	snmpd	12:33:35	0
638922	99	32	30,2	cyclictest	449069	-21	snmpd	10:11:27	0
638922	99	32	30,2	cyclictest	449069	-21	snmpd	09:15:16	0
638922	99	32	29,2	cyclictest	449069	-21	snmpd	07:20:19	0
638929	99	31	30,1	cyclictest	449069	-21	snmpd	10:16:57	7
638929	99	31	30,1	cyclictest	449069	-21	snmpd	09:26:52	7
638929	99	31	30,1	cyclictest	449069	-21	snmpd	08:06:05	7
638929	99	31	29,2	cyclictest	703130	-21	cat	09:15:13	7
638929	99	31	0,30	cyclictest	0	-21	swapper/7	12:01:40	7
638929	99	31	0,30	cyclictest	0	-21	swapper/7	11:31:48	7
638929	99	31	0,30	cyclictest	0	-21	swapper/7	11:23:02	7
638929	99	31	0,30	cyclictest	0	-21	swapper/7	10:12:36	7
638929	99	31	0,30	cyclictest	0	-21	swapper/7	09:55:44	7
638929	99	31	0,1	cyclictest	0	-21	swapper/7	09:12:49	7
638929	99	31	0,1	cyclictest	0	-21	swapper/7	07:36:13	7
638929	99	31	0,1	cyclictest	0	-21	swapper/7	07:20:07	7
638928	99	31	30,1	cyclictest	449069	-21	snmpd	10:05:27	6
638928	99	31	30,1	cyclictest	449069	-21	snmpd	07:18:19	6
638928	99	31	29,1	cyclictest	449069	-21	snmpd	11:30:33	6
638928	99	31	0,31	cyclictest	0	-21	swapper/6	07:45:14	6
638928	99	31	0,30	cyclictest	0	-21	swapper/6	12:10:31	6
638928	99	31	0,30	cyclictest	0	-21	swapper/6	10:49:28	6
638928	99	31	0,30	cyclictest	0	-21	swapper/6	10:21:36	6
638928	99	31	0,30	cyclictest	0	-21	swapper/6	10:16:51	6
638928	99	31	0,30	cyclictest	0	-21	swapper/6	09:51:20	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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