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 Tue Mar 24, 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
3950856	2	298	269,21	sleep3	0	-21	swapper/3	07:09:19	3
3950603	2	293	283,6	sleep0	0	-21	swapper/0	07:05:47	0
3950720	2	290	276,8	sleep5	0	-21	swapper/5	07:07:29	5
3950657	2	290	267,16	sleep7	0	-21	swapper/7	07:06:35	7
3950660	2	289	270,12	sleep1	0	-21	swapper/1	07:06:37	1
3950796	2	288	267,13	sleep4	0	-21	swapper/4	07:08:33	4
3950618	2	287	266,13	sleep6	0	-21	swapper/6	07:06:02	6
3950805	2	286	267,12	sleep2	0	-21	swapper/2	07:08:39	2
3951375	99	35	33,2	cyclictest	4000393	-21	kworker/u16:4+flush-8:0	08:50:00	0
3951380	99	34	30,3	cyclictest	449069	-21	snmpd	08:40:50	5
3951380	99	33	30,2	cyclictest	449069	-21	snmpd	12:34:07	5
3951380	99	33	30,2	cyclictest	449069	-21	snmpd	12:34:07	5
3951380	99	33	30,2	cyclictest	449069	-21	snmpd	12:16:29	5
3951379	99	33	32,1	cyclictest	3984349	-21	kworker/u16:3+flush-8:0	08:45:15	4
3951378	99	33	0,32	cyclictest	4070021	-21	chrt	11:02:54	3
3951377	99	33	30,2	cyclictest	449069	-21	snmpd	11:11:19	2
3951377	99	33	30,2	cyclictest	449069	-21	snmpd	10:14:38	2
3951377	99	33	30,2	cyclictest	449069	-21	snmpd	07:45:12	2
3951377	99	33	0,30	cyclictest	0	-21	swapper/2	09:32:28	2
3951376	99	33	30,2	cyclictest	449069	-21	snmpd	07:20:17	1
3951382	99	32	30,2	cyclictest	449069	-21	snmpd	11:42:44	7
3951382	99	32	30,2	cyclictest	449069	-21	snmpd	08:10:13	7
3951382	99	32	30,2	cyclictest	449069	-21	snmpd	07:27:03	7
3951382	99	32	29,2	cyclictest	449069	-21	snmpd	11:04:05	7
3951382	99	32	0,30	cyclictest	0	-21	swapper/7	08:50:44	7
3951382	99	32	0,30	cyclictest	0	-21	swapper/7	07:55:22	7
3951381	99	32	32,0	cyclictest	0	-21	swapper/6	09:18:51	6
3951381	99	32	30,2	cyclictest	449069	-21	snmpd	07:56:49	6
3951380	99	32	30,1	cyclictest	449069	-21	snmpd	10:01:58	5
3951380	99	32	30,1	cyclictest	449069	-21	snmpd	07:19:45	5
3951380	99	32	29,2	cyclictest	449069	-21	snmpd	11:24:31	5
3951380	99	32	0,31	cyclictest	0	-21	swapper/5	12:10:15	5
3951380	99	32	0,31	cyclictest	0	-21	swapper/5	11:18:31	5
3951380	99	32	0,31	cyclictest	0	-21	swapper/5	09:29:39	5
3951380	99	32	0,31	cyclictest	0	-21	swapper/5	08:19:31	5
3951379	99	32	30,2	cyclictest	449069	-21	snmpd	07:40:36	4
3951379	99	32	30,1	cyclictest	4017105	-21	kworker/u16:1+flush-8:0	09:50:26	4
3951379	99	32	0,0	cyclictest	0	-21	swapper/4	10:29:37	4
3951378	99	32	29,2	cyclictest	449069	-21	snmpd	12:10:06	3
3951378	99	32	29,2	cyclictest	449069	-21	snmpd	11:22:37	3
3951378	99	32	29,2	cyclictest	449069	-21	snmpd	10:40:48	3
3951378	99	32	29,2	cyclictest	449069	-21	snmpd	10:40:47	3
3951378	99	32	29,2	cyclictest	449069	-21	snmpd	07:30:39	3
3951377	99	32	30,2	cyclictest	4063701	-21	cat	10:50:15	2
3951377	99	32	30,1	cyclictest	449069	-21	snmpd	09:29:47	2
3951377	99	32	29,2	cyclictest	449069	-21	snmpd	11:44:20	2
3951377	99	32	29,2	cyclictest	449069	-21	snmpd	10:15:08	2
3951377	99	32	29,2	cyclictest	449069	-21	snmpd	09:11:57	2
3951377	99	32	29,2	cyclictest	449069	-21	snmpd	07:40:30	2
3951377	99	32	0,31	cyclictest	0	-21	swapper/2	07:55:16	2
3951377	99	32	0,30	cyclictest	0	-21	swapper/2	09:43:07	2
3951376	99	32	30,2	cyclictest	449069	-21	snmpd	10:51:14	1
3951376	99	32	30,2	cyclictest	449069	-21	snmpd	08:46:53	1
3951376	99	32	30,2	cyclictest	4018424	-21	cat	09:20:14	1
3951376	99	32	30,1	cyclictest	449069	-21	snmpd	08:18:43	1
3951376	99	32	0,31	cyclictest	0	-21	swapper/1	12:19:42	1
3951376	99	32	0,31	cyclictest	0	-21	swapper/1	11:08:00	1
3951375	99	32	30,2	cyclictest	4114256	-21	cat	12:30:15	0
3951375	99	32	30,2	cyclictest	4114256	-21	cat	12:30:14	0
3951375	99	32	28,3	cyclictest	0	-21	swapper/0	10:08:23	0
3951382	99	31	30,1	cyclictest	449069	-21	snmpd	09:49:12	7
3951382	99	31	30,1	cyclictest	449069	-21	snmpd	07:16:27	7
3951382	99	31	29,2	cyclictest	449069	-21	snmpd	12:11:56	7
3951382	99	31	29,2	cyclictest	449069	-21	snmpd	09:53:04	7
3951382	99	31	29,2	cyclictest	449069	-21	snmpd	08:49:37	7
3951382	99	31	28,2	cyclictest	449069	-21	snmpd	10:06:28	7
3951382	99	31	0,31	cyclictest	0	-21	swapper/7	09:37:40	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	11:49:49	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	11:35:25	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	10:20:44	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	09:43:31	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	08:09:04	7
3951382	99	31	0,30	cyclictest	0	-21	swapper/7	08:01:31	7
3951382	99	31	0,1	cyclictest	0	-21	swapper/7	08:16:22	7
3951382	99	31	0,1	cyclictest	0	-21	swapper/7	07:35:21	7
3951381	99	31	30,1	cyclictest	449069	-21	snmpd	09:51:24	6
3951381	99	31	30,1	cyclictest	449069	-21	snmpd	08:02:37	6
3951381	99	31	29,2	cyclictest	449069	-21	snmpd	11:19:15	6
3951381	99	31	29,2	cyclictest	449069	-21	snmpd	10:10:43	6
3951381	99	31	29,2	cyclictest	449069	-21	snmpd	08:21:31	6
3951381	99	31	0,31	cyclictest	0	-21	swapper/6	10:48:15	6
3951381	99	31	0,31	cyclictest	0	-21	swapper/6	10:48:15	6
3951381	99	31	0,30	cyclictest	0	-21	swapper/6	11:44:55	6
3951381	99	31	0,30	cyclictest	0	-21	swapper/6	10:42:15	6
3951381	99	31	0,30	cyclictest	0	-21	swapper/6	10:42:14	6
3951381	99	31	0,30	cyclictest	0	-21	swapper/6	08:42:14	6
3951381	99	31	0,1	cyclictest	0	-21	swapper/6	11:37:43	6
3951381	99	31	0,1	cyclictest	0	-21	swapper/6	09:57:52	6
3951381	99	31	0,1	cyclictest	0	-21	swapper/6	09:38:10	6
3951380	99	31	29,2	cyclictest	449069	-21	snmpd	09:32:58	5
3951380	99	31	29,1	cyclictest	449069	-21	snmpd	11:58:23	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	12:03:34	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	10:12:47	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	10:07:16	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	09:11:11	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	08:45:59	5
3951380	99	31	0,30	cyclictest	0	-21	swapper/5	07:20:57	5
3951380	99	31	0,1	cyclictest	0	-21	swapper/5	11:42:02	5
3951380	99	31	0,1	cyclictest	0	-21	swapper/5	09:15:18	5
3951380	99	31	0,1	cyclictest	0	-21	swapper/5	08:00:15	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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