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 Sat Apr 11, 2026 00:46:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
756234	2	301	282,12	sleep5	0	-21	swapper/5	19:07:08	5
756278	2	299	261,31	sleep7	0	-21	swapper/7	19:07:42	7
756355	2	298	281,10	sleep6	0	-21	swapper/6	19:08:46	6
756324	2	294	258,28	sleep4	0	-21	swapper/4	19:08:20	4
756290	2	287	267,13	sleep1	0	-21	swapper/1	19:07:52	1
756351	2	286	267,12	sleep2	0	-21	swapper/2	19:08:42	2
756332	2	286	267,12	sleep3	0	-21	swapper/3	19:08:27	3
756220	2	286	266,13	sleep0	0	-21	swapper/0	19:06:55	0
756918	99	35	33,2	cyclictest	833356	-21	kworker/u16:1+flush-8:0	22:00:30	3
756921	99	34	0,31	cyclictest	0	-21	swapper/6	19:20:51	6
756917	99	34	30,3	cyclictest	449069	-21	snmpd	22:00:12	2
756917	99	34	30,3	cyclictest	449069	-21	snmpd	19:51:50	2
756917	99	34	30,3	cyclictest	449069	-21	snmpd	19:51:49	2
756915	99	34	0,33	cyclictest	0	-21	swapper/0	19:25:15	0
756922	99	33	30,2	cyclictest	449069	-21	snmpd	20:20:26	7
756922	99	33	30,2	cyclictest	449069	-21	snmpd	20:12:48	7
756922	99	33	0,32	cyclictest	0	-21	swapper/7	21:33:59	7
756922	99	33	0,30	cyclictest	0	-21	swapper/7	23:30:56	7
756922	99	33	0,30	cyclictest	0	-21	swapper/7	20:27:11	7
756921	99	33	30,2	cyclictest	816487	-21	cat	21:05:14	6
756921	99	33	0,30	cyclictest	0	-21	swapper/6	21:41:47	6
756920	99	33	30,2	cyclictest	449069	-21	snmpd	00:11:48	5
756920	99	33	0,30	cyclictest	0	-21	swapper/5	20:57:55	5
756919	99	33	0,30	cyclictest	0	-21	swapper/4	22:32:25	4
756918	99	33	30,3	cyclictest	449069	-21	snmpd	19:11:51	3
756917	99	33	30,2	cyclictest	874300	-21	cat	23:00:15	2
756917	99	33	30,2	cyclictest	449069	-21	snmpd	23:33:47	2
756917	99	33	30,2	cyclictest	449069	-21	snmpd	20:33:15	2
756916	99	33	0,30	cyclictest	0	-21	swapper/1	23:36:47	1
756916	99	33	0,30	cyclictest	0	-21	swapper/1	23:36:47	1
756916	99	33	0,30	cyclictest	0	-21	swapper/1	23:05:52	1
756916	99	33	0,30	cyclictest	0	-21	swapper/1	19:49:38	1
756915	99	33	30,2	cyclictest	449069	-21	snmpd	23:25:38	0
756915	99	33	0,30	cyclictest	0	-21	swapper/0	23:15:14	0
756915	99	33	0,30	cyclictest	0	-21	swapper/0	21:15:16	0
756915	99	33	0,30	cyclictest	0	-21	swapper/0	19:36:10	0
756922	99	32	29,2	cyclictest	449069	-21	snmpd	21:01:28	7
756921	99	32	30,2	cyclictest	449069	-21	snmpd	22:29:39	6
756921	99	32	30,2	cyclictest	449069	-21	snmpd	21:46:17	6
756921	99	32	30,2	cyclictest	449069	-21	snmpd	21:46:17	6
756921	99	32	30,1	cyclictest	449069	-21	snmpd	23:23:47	6
756921	99	32	29,2	cyclictest	917161	-21	cat	00:25:15	6
756921	99	32	29,2	cyclictest	449069	-21	snmpd	20:19:44	6
756921	99	32	29,2	cyclictest	449069	-21	snmpd	00:24:55	6
756921	99	32	0,30	cyclictest	0	-21	swapper/6	23:50:57	6
756921	99	32	0,30	cyclictest	0	-21	swapper/6	23:32:02	6
756920	99	32	30,2	cyclictest	449069	-21	snmpd	23:09:11	5
756920	99	32	0,30	cyclictest	0	-21	swapper/5	23:51:00	5
756919	99	32	30,2	cyclictest	449069	-21	snmpd	19:56:16	4
756919	99	32	30,2	cyclictest	449069	-21	snmpd	19:56:16	4
756919	99	32	29,2	cyclictest	449069	-21	snmpd	22:57:16	4
756919	99	32	29,2	cyclictest	449069	-21	snmpd	22:04:09	4
756919	99	32	29,2	cyclictest	449069	-21	snmpd	00:09:57	4
756919	99	32	0,31	cyclictest	0	-21	swapper/4	20:08:02	4
756919	99	32	0,31	cyclictest	0	-21	swapper/4	00:18:52	4
756919	99	32	0,30	cyclictest	0	-21	swapper/4	22:25:15	4
756918	99	32	30,2	cyclictest	909638	-21	cat	00:10:15	3
756918	99	32	30,2	cyclictest	879315	-21	cat	23:10:15	3
756918	99	32	30,2	cyclictest	449069	-21	snmpd	23:56:45	3
756918	99	32	30,2	cyclictest	449069	-21	snmpd	22:15:39	3
756918	99	32	30,2	cyclictest	449069	-21	snmpd	21:16:25	3
756918	99	32	30,2	cyclictest	449069	-21	snmpd	00:08:06	3
756918	99	32	30,1	cyclictest	449069	-21	snmpd	22:05:04	3
756918	99	32	0,31	cyclictest	0	-21	swapper/3	23:46:39	3
756917	99	32	30,2	cyclictest	449069	-21	snmpd	00:36:10	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	23:54:06	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	23:26:11	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	22:58:52	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	22:45:46	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	21:03:25	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	20:37:45	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	19:45:13	2
756917	99	32	30,1	cyclictest	449069	-21	snmpd	19:31:15	2
756917	99	32	29,2	cyclictest	449069	-21	snmpd	23:58:51	2
756917	99	32	29,2	cyclictest	449069	-21	snmpd	23:11:02	2
756917	99	32	29,2	cyclictest	449069	-21	snmpd	20:01:25	2
756917	99	32	29,2	cyclictest	449069	-21	snmpd	00:12:39	2
756917	99	32	0,31	cyclictest	0	-21	swapper/2	23:15:13	2
756916	99	32	30,1	cyclictest	449069	-21	snmpd	20:18:53	1
756916	99	32	0,29	cyclictest	0	-21	swapper/1	20:03:54	1
756915	99	32	29,2	cyclictest	449069	-21	snmpd	20:16:23	0
756915	99	32	0,31	cyclictest	0	-21	swapper/0	23:56:24	0
756915	99	32	0,31	cyclictest	0	-21	swapper/0	22:01:00	0
756915	99	32	0,31	cyclictest	0	-21	swapper/0	20:30:14	0
756915	99	32	0,31	cyclictest	0	-21	swapper/0	19:55:15	0
756915	99	32	0,31	cyclictest	0	-21	swapper/0	19:55:14	0
756922	99	31	30,1	cyclictest	449069	-21	snmpd	20:31:09	7
756922	99	31	29,1	cyclictest	449069	-21	snmpd	23:03:40	7
756922	99	31	29,1	cyclictest	449069	-21	snmpd	22:07:00	7
756922	99	31	29,1	cyclictest	449069	-21	snmpd	20:16:56	7
756922	99	31	29,1	cyclictest	449069	-21	snmpd	00:36:16	7
756922	99	31	28,2	cyclictest	841492	-21	cat	21:55:14	7
756922	99	31	28,2	cyclictest	816488	-21	cat	21:05:14	7
756922	99	31	28,2	cyclictest	449069	-21	snmpd	23:43:39	7
756922	99	31	28,2	cyclictest	449069	-21	snmpd	20:39:40	7
756922	99	31	28,2	cyclictest	449069	-21	snmpd	19:44:58	7
756922	99	31	0,30	cyclictest	0	-21	swapper/7	23:56:45	7
756922	99	31	0,30	cyclictest	0	-21	swapper/7	23:36:38	7
756922	99	31	0,30	cyclictest	0	-21	swapper/7	23:36:38	7
756922	99	31	0,30	cyclictest	0	-21	swapper/7	22:12:39	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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