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 17, 2026 00:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2262054	2	312	295,12	sleep0	0	-21	swapper/0	19:06:00	0
2262135	2	301	261,13	sleep5	0	-21	swapper/5	19:07:09	5
2262329	2	299	263,28	sleep7	0	-21	swapper/7	19:09:52	7
2262335	2	296	279,10	sleep3	0	-21	swapper/3	19:09:56	3
2262114	2	295	261,26	sleep2	0	-21	swapper/2	19:06:50	2
2262127	2	287	268,12	sleep6	0	-21	swapper/6	19:07:02	6
2262084	2	287	268,12	sleep1	0	-21	swapper/1	19:06:25	1
2262060	2	286	267,12	sleep4	0	-21	swapper/4	19:06:04	4
2262818	99	34	0,31	cyclictest	0	-21	swapper/7	22:57:58	7
2262818	99	34	0,31	cyclictest	0	-21	swapper/7	22:57:58	7
2262817	99	34	30,3	cyclictest	449069	-21	snmpd	22:56:22	6
2262817	99	34	30,3	cyclictest	449069	-21	snmpd	22:56:21	6
2262816	99	34	0,31	cyclictest	0	-21	swapper/5	19:10:55	5
2262816	99	34	0,31	cyclictest	0	-21	swapper/5	19:10:54	5
2262818	99	33	29,3	cyclictest	339	-21	systemd-journal	22:50:00	7
2262818	99	33	0,31	cyclictest	0	-21	swapper/7	23:05:26	7
2262818	99	33	0,30	cyclictest	0	-21	swapper/7	20:10:16	7
2262818	99	33	0,30	cyclictest	0	-21	swapper/7	20:02:32	7
2262818	99	33	0,30	cyclictest	0	-21	swapper/7	19:38:53	7
2262817	99	33	31,2	cyclictest	2316737	-21	apt-get	20:55:01	6
2262817	99	33	30,3	cyclictest	449069	-21	snmpd	20:53:39	6
2262816	99	33	30,2	cyclictest	2421315	-21	cat	00:20:13	5
2262816	99	33	29,3	cyclictest	449069	-21	snmpd	19:22:49	5
2262815	99	33	30,2	cyclictest	449069	-21	snmpd	19:21:37	4
2262815	99	33	29,3	cyclictest	0	-21	swapper/4	23:59:41	4
2262815	99	33	0,30	cyclictest	0	-21	swapper/4	21:25:41	4
2262814	99	33	30,2	cyclictest	449069	-21	snmpd	21:36:47	3
2262814	99	33	0,30	cyclictest	0	-21	swapper/3	22:46:10	3
2262812	99	33	30,2	cyclictest	449069	-21	snmpd	00:22:58	1
2262812	99	33	0,31	cyclictest	0	-21	swapper/1	20:11:42	1
2262811	99	33	30,2	cyclictest	2348363	-21	cat	21:55:14	0
2262818	99	32	30,1	cyclictest	449069	-21	snmpd	20:51:13	7
2262818	99	32	30,1	cyclictest	449069	-21	snmpd	19:10:22	7
2262818	99	32	30,1	cyclictest	449069	-21	snmpd	19:10:22	7
2262818	99	32	29,2	cyclictest	449069	-21	snmpd	19:51:32	7
2262818	99	32	0,31	cyclictest	0	-21	swapper/7	23:01:32	7
2262818	99	32	0,31	cyclictest	0	-21	swapper/7	22:05:09	7
2262818	99	32	0,31	cyclictest	0	-21	swapper/7	21:39:13	7
2262818	99	32	0,29	cyclictest	0	-21	swapper/7	22:00:39	7
2262817	99	32	29,2	cyclictest	449069	-21	snmpd	00:05:28	6
2262817	99	32	0,31	cyclictest	0	-21	swapper/6	22:20:36	6
2262817	99	32	0,31	cyclictest	0	-21	swapper/6	21:25:50	6
2262817	99	32	0,31	cyclictest	0	-21	swapper/6	20:01:05	6
2262816	99	32	30,1	cyclictest	449069	-21	snmpd	23:52:27	5
2262816	99	32	29,2	cyclictest	449069	-21	snmpd	23:16:38	5
2262816	99	32	29,2	cyclictest	449069	-21	snmpd	20:36:00	5
2262816	99	32	29,2	cyclictest	2343359	-21	cat	21:45:15	5
2262815	99	32	29,2	cyclictest	449069	-21	snmpd	23:53:42	4
2262815	99	32	29,2	cyclictest	449069	-21	snmpd	22:03:48	4
2262815	99	32	0,30	cyclictest	0	-21	swapper/4	20:34:47	4
2262814	99	32	30,2	cyclictest	449069	-21	snmpd	20:30:45	3
2262814	99	32	30,2	cyclictest	449069	-21	snmpd	20:15:47	3
2262814	99	32	30,2	cyclictest	449069	-21	snmpd	20:06:56	3
2262814	99	32	30,2	cyclictest	449069	-21	snmpd	19:44:05	3
2262814	99	32	29,2	cyclictest	449069	-21	snmpd	00:30:19	3
2262814	99	32	0,31	cyclictest	0	-21	swapper/3	00:21:34	3
2262813	99	32	30,2	cyclictest	449069	-21	snmpd	20:30:15	2
2262812	99	32	30,2	cyclictest	449069	-21	snmpd	23:37:21	1
2262812	99	32	30,2	cyclictest	449069	-21	snmpd	23:14:55	1
2262812	99	32	30,2	cyclictest	449069	-21	snmpd	20:37:43	1
2262812	99	32	30,2	cyclictest	449069	-21	snmpd	19:31:59	1
2262812	99	32	30,2	cyclictest	2266938	-21	cat	19:15:15	1
2262812	99	32	30,2	cyclictest	2266938	-21	cat	19:15:14	1
2262812	99	32	30,1	cyclictest	449069	-21	snmpd	23:20:04	1
2262812	99	32	30,1	cyclictest	449069	-21	snmpd	19:39:32	1
2262812	99	32	29,2	cyclictest	449069	-21	snmpd	19:43:29	1
2262812	99	32	29,2	cyclictest	2340827	-21	cat	21:40:15	1
2262812	99	32	0,30	cyclictest	0	-21	swapper/1	23:40:15	1
2262811	99	32	30,2	cyclictest	449069	-21	snmpd	22:31:25	0
2262811	99	32	30,2	cyclictest	449069	-21	snmpd	21:25:38	0
2262811	99	32	30,2	cyclictest	449069	-21	snmpd	00:39:22	0
2262811	99	32	29,2	cyclictest	2395897	-21	cat	23:30:15	0
2262811	99	32	29,2	cyclictest	0	-21	swapper/0	19:51:05	0
2262818	99	31	29,2	cyclictest	449069	-21	snmpd	22:24:58	7
2262818	99	31	28,2	cyclictest	449069	-21	snmpd	19:34:59	7
2262818	99	31	28,2	cyclictest	449069	-21	snmpd	00:23:34	7
2262818	99	31	27,3	cyclictest	0	-21	swapper/7	21:50:06	7
2262818	99	31	0,31	cyclictest	0	-21	swapper/7	20:06:45	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	23:59:20	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	23:45:17	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	20:55:13	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	19:46:34	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	19:40:41	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	19:15:15	7
2262818	99	31	0,30	cyclictest	0	-21	swapper/7	19:15:15	7
2262818	99	31	0,29	cyclictest	0	-21	swapper/7	21:27:35	7
2262818	99	31	0,1	cyclictest	0	-21	swapper/7	22:19:48	7
2262818	99	31	0,1	cyclictest	0	-21	swapper/7	19:57:46	7
2262817	99	31	29,2	cyclictest	449069	-21	snmpd	00:24:43	6
2262817	99	31	28,2	cyclictest	449069	-21	snmpd	20:05:39	6
2262817	99	31	0,31	cyclictest	0	-21	swapper/6	00:16:43	6
2262817	99	31	0,30	cyclictest	0	-21	swapper/6	23:55:42	6
2262817	99	31	0,30	cyclictest	0	-21	swapper/6	22:15:02	6
2262817	99	31	0,30	cyclictest	0	-21	swapper/6	21:20:23	6
2262817	99	31	0,30	cyclictest	0	-21	swapper/6	20:33:15	6
2262817	99	31	0,1	cyclictest	0	-21	swapper/6	21:14:47	6
2262817	99	31	0,1	cyclictest	0	-21	swapper/6	21:14:46	6
2262817	99	31	0,1	cyclictest	0	-21	swapper/6	00:37:54	6
2262816	99	31	30,1	cyclictest	449069	-21	snmpd	21:27:10	5
2262816	99	31	29,1	cyclictest	449069	-21	snmpd	22:31:30	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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