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 Jul 01, 2025 00:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2784507	2	309	300,6	sleep6	0	-21	swapper/6	19:09:02	6
2784465	2	306	277,22	sleep1	0	-21	swapper/1	19:08:33	1
2784263	2	301	280,13	sleep5	0	-21	swapper/5	19:06:44	5
2784262	2	299	259,31	sleep4	0	-21	swapper/4	19:06:43	4
2784272	2	293	275,11	sleep3	0	-21	swapper/3	19:06:50	3
2784517	2	286	266,13	sleep7	0	-21	swapper/7	19:09:10	7
2784453	2	286	265,13	sleep2	0	-21	swapper/2	19:08:26	2
2784438	2	285	266,12	sleep0	0	-21	swapper/0	19:08:16	0
2785052	99	38	37,1	cyclictest	2837896	-21	kworker/u16:0+flush-8:0	22:29:59	7
2785052	99	38	36,1	cyclictest	2756016	-21	kworker/u16:1+flush-8:0	19:55:24	7
2785047	99	36	30,5	cyclictest	833	-21	snmpd	22:16:48	2
2785052	99	35	34,1	cyclictest	2837896	-21	kworker/u16:0+flush-8:0	21:40:01	7
2785051	99	35	30,4	cyclictest	833	-21	snmpd	23:16:33	6
2785051	99	34	30,3	cyclictest	833	-21	snmpd	20:43:41	6
2785051	99	33	30,2	cyclictest	833	-21	snmpd	22:50:17	6
2785051	99	33	30,2	cyclictest	833	-21	snmpd	20:47:16	6
2785051	99	33	30,2	cyclictest	833	-21	snmpd	20:18:13	6
2785051	99	33	30,2	cyclictest	833	-21	snmpd	19:32:33	6
2785051	99	33	30,2	cyclictest	833	-21	snmpd	00:02:47	6
2785051	99	33	29,3	cyclictest	833	-21	snmpd	21:47:59	6
2785051	99	33	29,3	cyclictest	833	-21	snmpd	21:33:54	6
2785051	99	33	29,3	cyclictest	833	-21	snmpd	20:24:00	6
2785050	99	33	30,2	cyclictest	833	-21	snmpd	19:52:36	5
2785050	99	33	30,2	cyclictest	2803670	-21	cat	19:45:15	5
2785050	99	33	0,30	cyclictest	0	-21	swapper/5	20:16:25	5
2785049	99	33	31,1	cyclictest	833	-21	snmpd	23:19:30	4
2785049	99	33	30,2	cyclictest	833	-21	snmpd	00:10:40	4
2785049	99	33	0,30	cyclictest	0	-21	swapper/4	23:37:55	4
2785049	99	33	0,30	cyclictest	0	-21	swapper/4	20:30:49	4
2785049	99	33	0,1	cyclictest	53	-21	ksoftirqd/4	00:16:50	4
2785048	99	33	0,30	cyclictest	0	-21	swapper/3	23:20:45	3
2785047	99	33	30,2	cyclictest	833	-21	snmpd	00:30:09	2
2785047	99	33	30,2	cyclictest	833	-21	snmpd	00:30:08	2
2785047	99	33	30,2	cyclictest	2925301	-21	cat	00:00:15	2
2785047	99	33	28,4	cyclictest	833	-21	snmpd	23:01:21	2
2785046	99	33	0,30	cyclictest	0	-21	swapper/1	20:38:49	1
2785045	99	33	30,3	cyclictest	833	-21	snmpd	21:06:38	0
2785045	99	33	30,2	cyclictest	833	-21	snmpd	23:15:06	0
2785045	99	33	30,2	cyclictest	2886760	-21	cat	22:40:16	0
2785045	99	33	30,2	cyclictest	2886760	-21	cat	22:40:16	0
2785045	99	33	28,3	cyclictest	833	-21	snmpd	19:45:21	0
2785052	99	32	30,2	cyclictest	677074	-21	ntpd	20:00:15	7
2785052	99	32	29,2	cyclictest	833	-21	snmpd	00:07:47	7
2785051	99	32	30,1	cyclictest	833	-21	snmpd	23:45:04	6
2785051	99	32	30,1	cyclictest	833	-21	snmpd	19:13:08	6
2785051	99	32	29,2	cyclictest	833	-21	snmpd	21:57:31	6
2785051	99	32	29,2	cyclictest	833	-21	snmpd	21:07:35	6
2785051	99	32	29,2	cyclictest	833	-21	snmpd	20:28:13	6
2785051	99	32	29,2	cyclictest	2901247	-21	cat	23:10:17	6
2785051	99	32	28,3	cyclictest	833	-21	snmpd	00:19:50	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	22:04:02	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	20:10:58	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	19:37:32	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	19:15:14	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	00:30:57	6
2785051	99	32	0,31	cyclictest	0	-21	swapper/6	00:30:57	6
2785050	99	32	29,2	cyclictest	833	-21	snmpd	20:45:32	5
2785050	99	32	29,2	cyclictest	2915811	-21	cat	23:40:16	5
2785050	99	32	28,3	cyclictest	833	-21	snmpd	23:11:18	5
2785050	99	32	0,31	cyclictest	0	-21	swapper/5	21:00:17	5
2785050	99	32	0,31	cyclictest	0	-21	swapper/5	00:28:50	5
2785050	99	32	0,31	cyclictest	0	-21	swapper/5	00:28:49	5
2785050	99	32	0,30	cyclictest	0	-21	swapper/5	22:54:46	5
2785050	99	32	0,30	cyclictest	0	-21	swapper/5	19:55:12	5
2785050	99	32	0,30	cyclictest	0	-21	swapper/5	19:42:51	5
2785049	99	32	30,1	cyclictest	833	-21	snmpd	23:58:56	4
2785049	99	32	30,1	cyclictest	833	-21	snmpd	22:24:26	4
2785049	99	32	30,1	cyclictest	833	-21	snmpd	19:51:48	4
2785049	99	32	30,1	cyclictest	0	-21	swapper/4	23:51:13	4
2785048	99	32	0,31	cyclictest	0	-21	swapper/3	20:53:11	3
2785047	99	32	0,31	cyclictest	0	-21	swapper/2	23:45:10	2
2785047	99	32	0,31	cyclictest	0	-21	swapper/2	21:31:53	2
2785047	99	32	0,31	cyclictest	0	-21	swapper/2	21:02:35	2
2785047	99	32	0,30	cyclictest	0	-21	swapper/2	19:55:44	2
2785047	99	32	0,30	cyclictest	0	-21	swapper/2	19:37:03	2
2785047	99	32	0,30	cyclictest	0	-21	swapper/2	19:32:27	2
2785046	99	32	29,2	cyclictest	833	-21	snmpd	21:14:08	1
2785046	99	32	0,30	cyclictest	0	-21	swapper/1	20:02:31	1
2785045	99	32	30,2	cyclictest	833	-21	snmpd	22:36:26	0
2785045	99	32	30,2	cyclictest	833	-21	snmpd	22:36:26	0
2785045	99	32	30,2	cyclictest	833	-21	snmpd	21:18:30	0
2785045	99	32	30,2	cyclictest	833	-21	snmpd	19:34:15	0
2785045	99	32	30,2	cyclictest	833	-21	snmpd	19:26:26	0
2785045	99	32	30,1	cyclictest	833	-21	snmpd	23:36:43	0
2785045	99	32	30,1	cyclictest	833	-21	snmpd	23:21:20	0
2785045	99	32	29,2	cyclictest	833	-21	snmpd	22:16:43	0
2785045	99	32	29,2	cyclictest	833	-21	snmpd	20:50:26	0
2785045	99	32	29,2	cyclictest	2867788	-21	cat	22:00:15	0
2785045	99	32	0,30	cyclictest	0	-21	swapper/0	20:15:16	0
2785052	99	31	30,1	cyclictest	833	-21	snmpd	23:00:32	7
2785052	99	31	30,1	cyclictest	833	-21	snmpd	22:20:40	7
2785052	99	31	30,1	cyclictest	833	-21	snmpd	22:07:25	7
2785052	99	31	30,1	cyclictest	833	-21	snmpd	20:49:26	7
2785052	99	31	30,1	cyclictest	833	-21	snmpd	19:22:24	7
2785052	99	31	30,1	cyclictest	833	-21	snmpd	00:22:32	7
2785052	99	31	29,2	cyclictest	833	-21	snmpd	20:51:16	7
2785052	99	31	29,2	cyclictest	833	-21	snmpd	19:36:45	7
2785052	99	31	29,2	cyclictest	833	-21	snmpd	19:10:35	7
2785052	99	31	0,30	cyclictest	0	-21	swapper/7	22:36:08	7
2785052	99	31	0,30	cyclictest	0	-21	swapper/7	22:36:07	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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