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 Mar 22, 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
2384353	2	303	266,13	sleep5	0	-21	swapper/5	07:09:53	5
2384091	2	294	277,10	sleep7	0	-21	swapper/7	07:06:18	7
2384049	2	293	267,12	sleep3	0	-21	swapper/3	07:05:41	3
2384190	2	289	269,13	sleep1	0	-21	swapper/1	07:07:40	1
2384097	2	287	267,13	sleep4	0	-21	swapper/4	07:06:23	4
2384090	2	287	267,13	sleep6	0	-21	swapper/6	07:06:17	6
2384112	2	286	267,12	sleep0	0	-21	swapper/0	07:06:35	0
2384048	2	286	266,13	sleep2	0	-21	swapper/2	07:05:40	2
2385098	99	47	45,2	cyclictest	2443609	-21	kworker/u16:0+flush-8:0	09:50:24	3
2385100	99	36	36,0	cyclictest	0	-21	swapper/5	08:27:52	5
2385102	99	34	0,11	cyclictest	0	-21	swapper/7	08:50:18	7
2385098	99	34	32,2	cyclictest	2433903	-21	kworker/u16:2+flush-8:0	09:30:00	3
2385098	99	34	30,3	cyclictest	2400027	-21	ntpq	07:35:24	3
2385102	99	33	30,2	cyclictest	449069	-21	snmpd	11:52:46	7
2385102	99	33	30,2	cyclictest	449069	-21	snmpd	09:40:00	7
2385102	99	33	30,2	cyclictest	449069	-21	snmpd	09:15:47	7
2385102	99	33	30,2	cyclictest	449069	-21	snmpd	09:15:47	7
2385101	99	33	30,2	cyclictest	449069	-21	snmpd	08:16:22	6
2385101	99	33	30,2	cyclictest	449069	-21	snmpd	07:40:02	6
2385101	99	33	29,3	cyclictest	449069	-21	snmpd	09:06:59	6
2385099	99	33	30,2	cyclictest	449069	-21	snmpd	10:11:27	4
2385098	99	33	32,1	cyclictest	0	-21	swapper/3	08:17:16	3
2385098	99	33	31,2	cyclictest	2488383	-21	ntpq	10:30:26	3
2385098	99	33	30,3	cyclictest	43	1	rcuc/3	08:24:56	3
2385098	99	33	29,3	cyclictest	680	-21	rs:main		3
2385098	99	33	29,3	cyclictest	0	-21	swapper/3	12:34:04	3
2385096	99	33	0,1	cyclictest	0	-21	swapper/1	10:26:52	1
2385102	99	32	30,1	cyclictest	449069	-21	snmpd	09:52:00	7
2385102	99	32	29,2	cyclictest	449069	-21	snmpd	11:34:06	7
2385102	99	32	29,2	cyclictest	449069	-21	snmpd	10:19:01	7
2385102	99	32	29,2	cyclictest	449069	-21	snmpd	09:02:35	7
2385102	99	32	29,2	cyclictest	449069	-21	snmpd	07:14:56	7
2385102	99	32	28,3	cyclictest	449069	-21	snmpd	08:13:25	7
2385102	99	32	0,31	cyclictest	0	-21	swapper/7	10:35:35	7
2385102	99	32	0,31	cyclictest	0	-21	swapper/7	07:53:03	7
2385101	99	32	29,2	cyclictest	449069	-21	snmpd	08:40:01	6
2385101	99	32	29,2	cyclictest	449069	-21	snmpd	07:55:42	6
2385101	99	32	0,31	cyclictest	0	-21	swapper/6	08:45:16	6
2385100	99	32	30,2	cyclictest	449069	-21	snmpd	08:46:26	5
2385100	99	32	30,2	cyclictest	2475256	-21	cat	10:05:13	5
2385100	99	32	0,31	cyclictest	0	-21	swapper/5	09:21:06	5
2385099	99	32	30,1	cyclictest	449069	-21	snmpd	12:11:34	4
2385099	99	32	29,2	cyclictest	449069	-21	snmpd	11:34:44	4
2385099	99	32	29,2	cyclictest	449069	-21	snmpd	10:35:11	4
2385099	99	32	0,31	cyclictest	0	-21	swapper/4	10:51:23	4
2385098	99	32	0,31	cyclictest	0	-21	swapper/3	10:09:13	3
2385097	99	32	29,2	cyclictest	2442084	-21	cat	09:00:14	2
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	12:38:08	1
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	11:31:35	1
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	11:06:30	1
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	11:06:30	1
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	10:47:25	1
2385096	99	32	30,2	cyclictest	449069	-21	snmpd	09:43:33	1
2385096	99	32	29,2	cyclictest	449069	-21	snmpd	08:30:52	1
2385096	99	32	29,2	cyclictest	449069	-21	snmpd	07:32:50	1
2385095	99	32	30,2	cyclictest	449069	-21	snmpd	12:30:40	0
2385095	99	32	30,2	cyclictest	449069	-21	snmpd	12:27:26	0
2385095	99	32	30,2	cyclictest	449069	-21	snmpd	09:27:36	0
2385095	99	32	30,2	cyclictest	449069	-21	snmpd	08:11:52	0
2385095	99	32	30,1	cyclictest	449069	-21	snmpd	12:20:07	0
2385102	99	31	29,1	cyclictest	449069	-21	snmpd	09:33:53	7
2385102	99	31	28,2	cyclictest	449069	-21	snmpd	10:59:40	7
2385102	99	31	28,2	cyclictest	449069	-21	snmpd	08:15:40	7
2385102	99	31	28,2	cyclictest	449069	-21	snmpd	07:16:38	7
2385102	99	31	28,2	cyclictest	449069	-21	snmpd	07:16:38	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	12:36:17	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	12:30:15	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	11:55:13	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	09:40:56	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	07:45:30	7
2385102	99	31	0,30	cyclictest	0	-21	swapper/7	07:37:50	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	12:10:15	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	12:04:13	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	11:46:33	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	11:24:12	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	10:05:25	7
2385102	99	31	0,1	cyclictest	0	-21	swapper/7	08:24:43	7
2385101	99	31	30,1	cyclictest	449069	-21	snmpd	09:16:32	6
2385101	99	31	30,1	cyclictest	449069	-21	snmpd	09:16:32	6
2385101	99	31	29,1	cyclictest	449069	-21	snmpd	10:31:55	6
2385101	99	31	27,3	cyclictest	449069	-21	snmpd	09:58:12	6
2385101	99	31	0,30	cyclictest	0	-21	swapper/6	11:37:30	6
2385101	99	31	0,30	cyclictest	0	-21	swapper/6	11:19:15	6
2385101	99	31	0,30	cyclictest	0	-21	swapper/6	11:03:02	6
2385101	99	31	0,30	cyclictest	0	-21	swapper/6	10:02:58	6
2385101	99	31	0,30	cyclictest	0	-21	swapper/6	08:14:10	6
2385101	99	31	0,1	cyclictest	0	-21	swapper/6	08:22:31	6
2385100	99	31	30,1	cyclictest	449069	-21	snmpd	07:11:44	5
2385100	99	31	29,2	cyclictest	449069	-21	snmpd	11:45:23	5
2385100	99	31	29,2	cyclictest	2510300	-21	cat	11:15:15	5
2385100	99	31	29,2	cyclictest	2490294	-21	cat	10:35:15	5
2385100	99	31	0,31	cyclictest	0	-21	swapper/5	10:52:11	5
2385100	99	31	0,31	cyclictest	0	-21	swapper/5	09:47:33	5
2385100	99	31	0,30	cyclictest	0	-21	swapper/5	11:23:59	5
2385100	99	31	0,30	cyclictest	0	-21	swapper/5	09:43:57	5
2385100	99	31	0,30	cyclictest	0	-21	swapper/5	07:49:27	5
2385100	99	31	0,1	cyclictest	0	-21	swapper/5	12:37:20	5
2385100	99	31	0,1	cyclictest	0	-21	swapper/5	11:10:06	5
2385100	99	31	0,1	cyclictest	0	-21	swapper/5	10:34:37	5
2385100	99	31	0,1	cyclictest	0	-21	swapper/5	09:28:33	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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