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 Wed Apr 08, 2026 00:46:27)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2594839	2	314	282,10	sleep7	0	-21	swapper/7	19:07:40	7
2594806	2	299	279,13	sleep1	0	-21	swapper/1	19:07:10	1
2594775	2	293	274,12	sleep0	0	-21	swapper/0	19:06:43	0
2594943	2	289	269,13	sleep5	0	-21	swapper/5	19:09:07	5
2594932	2	288	268,12	sleep3	0	-21	swapper/3	19:08:55	3
2594728	2	287	266,13	sleep4	0	-21	swapper/4	19:06:08	4
2594849	2	286	266,13	sleep6	0	-21	swapper/6	19:07:46	6
2594744	2	286	265,13	sleep2	0	-21	swapper/2	19:06:21	2
2595480	99	35	33,2	cyclictest	2686653	-21	kworker/u16:1+flush-8:0	22:30:28	4
2595477	99	35	29,5	cyclictest	2738306	-21	cat	23:50:14	1
2595481	99	34	30,3	cyclictest	449069	-21	snmpd	23:04:59	5
2595483	99	33	30,2	cyclictest	449069	-21	snmpd	23:47:42	7
2595483	99	33	0,30	cyclictest	0	-21	swapper/7	20:27:55	7
2595481	99	33	30,2	cyclictest	449069	-21	snmpd	23:35:33	5
2595481	99	33	30,2	cyclictest	449069	-21	snmpd	23:35:33	5
2595481	99	33	30,2	cyclictest	449069	-21	snmpd	19:51:48	5
2595479	99	33	1,31	cyclictest	2750220	-21	apt-get	00:15:10	3
2595478	99	33	30,3	cyclictest	449069	-21	snmpd	19:13:27	2
2595478	99	33	30,2	cyclictest	449069	-21	snmpd	21:53:40	2
2595478	99	33	30,2	cyclictest	449069	-21	snmpd	21:37:21	2
2595478	99	33	30,2	cyclictest	449069	-21	snmpd	19:43:33	2
2595477	99	33	26,7	cyclictest	449069	-21	snmpd	00:09:58	1
2595477	99	33	1,31	cyclictest	2670398	-21	ntpq	21:35:25	1
2595477	99	33	0,32	cyclictest	0	-21	swapper/1	22:53:02	1
2595483	99	32	30,1	cyclictest	449069	-21	snmpd	23:52:06	7
2595483	99	32	30,1	cyclictest	449069	-21	snmpd	23:40:01	7
2595483	99	32	30,1	cyclictest	449069	-21	snmpd	23:40:00	7
2595483	99	32	29,2	cyclictest	2695506	-21	cat	22:25:17	7
2595483	99	32	29,2	cyclictest	2609893	-21	cat	19:35:14	7
2595483	99	32	0,31	cyclictest	0	-21	swapper/7	20:07:05	7
2595483	99	32	0,30	cyclictest	0	-21	swapper/7	23:23:31	7
2595483	99	32	0,30	cyclictest	0	-21	swapper/7	21:54:32	7
2595483	99	32	0,30	cyclictest	0	-21	swapper/7	19:44:30	7
2595482	99	32	30,2	cyclictest	449069	-21	snmpd	23:03:50	6
2595481	99	32	30,1	cyclictest	449069	-21	snmpd	20:55:20	5
2595481	99	32	29,2	cyclictest	449069	-21	snmpd	22:54:06	5
2595481	99	32	29,2	cyclictest	449069	-21	snmpd	20:39:39	5
2595481	99	32	28,3	cyclictest	2675206	-21	cat	21:45:15	5
2595481	99	32	0,31	cyclictest	0	-21	swapper/5	22:22:37	5
2595481	99	32	0,31	cyclictest	0	-21	swapper/5	19:22:03	5
2595480	99	32	30,2	cyclictest	516654	-21	ntpd	21:59:43	4
2595480	99	32	30,2	cyclictest	449069	-21	snmpd	22:09:46	4
2595480	99	32	30,2	cyclictest	449069	-21	snmpd	21:19:36	4
2595480	99	32	30,2	cyclictest	449069	-21	snmpd	20:53:56	4
2595479	99	32	30,2	cyclictest	449069	-21	snmpd	19:39:12	3
2595479	99	32	30,1	cyclictest	449069	-21	snmpd	21:13:41	3
2595479	99	32	30,1	cyclictest	449069	-21	snmpd	00:25:16	3
2595479	99	32	29,2	cyclictest	449069	-21	snmpd	22:59:05	3
2595479	99	32	0,31	cyclictest	0	-21	swapper/3	00:24:11	3
2595479	99	32	0,30	cyclictest	0	-21	swapper/3	19:40:43	3
2595478	99	32	30,2	cyclictest	449069	-21	snmpd	23:06:14	2
2595478	99	32	29,2	cyclictest	449069	-21	snmpd	23:19:39	2
2595478	99	32	0,31	cyclictest	0	-21	swapper/2	22:20:14	2
2595477	99	32	30,2	cyclictest	2700497	-21	cat	22:35:14	1
2595477	99	32	29,2	cyclictest	0	-21	swapper/1	00:33:16	1
2595476	99	32	30,2	cyclictest	449069	-21	snmpd	22:36:21	0
2595476	99	32	29,3	cyclictest	449069	-21	snmpd	20:52:32	0
2595476	99	32	29,2	cyclictest	449069	-21	snmpd	00:04:01	0
2595476	99	32	0,30	cyclictest	0	-21	swapper/0	22:55:41	0
2595483	99	31	30,1	cyclictest	449069	-21	snmpd	22:30:40	7
2595483	99	31	30,1	cyclictest	449069	-21	snmpd	22:21:58	7
2595483	99	31	30,1	cyclictest	449069	-21	snmpd	22:12:55	7
2595483	99	31	30,1	cyclictest	449069	-21	snmpd	00:20:28	7
2595483	99	31	28,2	cyclictest	449069	-21	snmpd	21:16:23	7
2595483	99	31	28,2	cyclictest	2715517	-21	cat	23:05:15	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	23:30:21	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	23:30:21	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	21:55:34	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	20:51:17	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	20:46:15	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	20:22:02	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	19:31:07	7
2595483	99	31	0,30	cyclictest	0	-21	swapper/7	19:18:54	7
2595483	99	31	0,1	cyclictest	0	-21	swapper/7	21:11:14	7
2595483	99	31	0,1	cyclictest	0	-21	swapper/7	21:03:08	7
2595483	99	31	0,1	cyclictest	0	-21	swapper/7	20:34:38	7
2595482	99	31	30,1	cyclictest	449069	-21	snmpd	21:36:21	6
2595482	99	31	29,2	cyclictest	449069	-21	snmpd	21:34:34	6
2595482	99	31	29,2	cyclictest	449069	-21	snmpd	21:11:44	6
2595482	99	31	29,2	cyclictest	449069	-21	snmpd	20:59:50	6
2595482	99	31	29,2	cyclictest	2730797	-21	cat	23:35:16	6
2595482	99	31	29,2	cyclictest	2730797	-21	cat	23:35:15	6
2595482	99	31	0,30	cyclictest	0	-21	swapper/6	20:32:01	6
2595482	99	31	0,30	cyclictest	0	-21	swapper/6	20:12:34	6
2595482	99	31	0,30	cyclictest	0	-21	swapper/6	19:15:57	6
2595482	99	31	0,1	cyclictest	0	-21	swapper/6	23:53:03	6
2595482	99	31	0,1	cyclictest	0	-21	swapper/6	23:07:06	6
2595482	99	31	0,1	cyclictest	0	-21	swapper/6	20:19:50	6
2595482	99	31	0,1	cyclictest	0	-21	swapper/6	00:29:13	6
2595481	99	31	30,1	cyclictest	449069	-21	snmpd	00:31:10	5
2595481	99	31	28,2	cyclictest	449069	-21	snmpd	20:26:50	5
2595481	99	31	28,2	cyclictest	2622403	-21	cat	20:00:16	5
2595481	99	31	0,31	cyclictest	0	-21	swapper/5	19:10:36	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	23:45:09	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	23:18:08	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	22:26:16	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	22:17:11	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	21:59:17	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	21:09:32	5
2595481	99	31	0,30	cyclictest	0	-21	swapper/5	21:02:36	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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