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 Dec 07, 2025 00:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3289194	2	306	264,13	sleep0	0	-21	swapper/0	19:05:48	0
3289451	2	303	281,9	sleep7	0	-21	swapper/7	19:09:24	7
3289441	2	298	261,12	sleep6	0	-21	swapper/6	19:09:15	6
3289252	2	290	257,25	sleep1	0	-21	swapper/1	19:06:38	1
3289484	2	287	259,20	sleep2	0	-21	swapper/2	19:09:53	2
3289186	2	286	266,13	sleep3	0	-21	swapper/3	19:05:43	3
3289384	2	285	266,12	sleep5	0	-21	swapper/5	19:08:27	5
3289275	2	283	264,12	sleep4	0	-21	swapper/4	19:06:56	4
3289969	99	56	53,2	cyclictest	3426382	-21	kworker/u16:3+flush-8:0	00:20:01	4
3289969	99	38	35,3	cyclictest	3312161	-21	kworker/u16:0+events_unbound	20:20:23	4
3289970	99	36	30,5	cyclictest	833	-21	snmpd	00:25:42	5
3289971	99	35	0,32	cyclictest	0	-21	swapper/6	21:55:20	6
3289970	99	35	29,5	cyclictest	833	-21	snmpd	00:19:26	5
3289969	99	35	33,2	cyclictest	3333261	-21	kworker/u16:1+events_unbound	22:05:24	4
3289965	99	35	0,1	cyclictest	0	-21	swapper/0	21:35:15	0
3289971	99	34	28,5	cyclictest	3434715	-21	cat	00:10:17	6
3289965	99	34	0,33	cyclictest	0	-21	swapper/0	19:38:52	0
3289965	99	34	0,32	cyclictest	0	-21	swapper/0	00:35:43	0
3289965	99	34	0,1	cyclictest	0	-21	swapper/0	20:22:54	0
3289972	99	33	30,2	cyclictest	833	-21	snmpd	20:59:15	7
3289972	99	33	30,2	cyclictest	833	-21	snmpd	00:07:56	7
3289972	99	33	30,2	cyclictest	3405512	-21	cat	23:10:16	7
3289972	99	33	30,2	cyclictest	3371989	-21	cat	22:00:16	7
3289971	99	33	30,2	cyclictest	833	-21	snmpd	21:25:50	6
3289971	99	33	30,2	cyclictest	3357960	-21	cat	21:30:16	6
3289971	99	33	0,30	cyclictest	0	-21	swapper/6	23:53:23	6
3289971	99	33	0,30	cyclictest	0	-21	swapper/6	23:40:55	6
3289971	99	33	0,30	cyclictest	0	-21	swapper/6	00:02:00	6
3289970	99	33	30,2	cyclictest	833	-21	snmpd	22:18:41	5
3289970	99	33	30,2	cyclictest	833	-21	snmpd	19:50:04	5
3289970	99	33	0,30	cyclictest	0	-21	swapper/5	22:03:20	5
3289970	99	33	0,30	cyclictest	0	-21	swapper/5	20:14:23	5
3289970	99	33	0,1	cyclictest	0	-21	swapper/5	23:27:35	5
3289968	99	33	30,2	cyclictest	833	-21	snmpd	22:42:42	3
3289967	99	33	30,2	cyclictest	833	-21	snmpd	22:20:14	2
3289967	99	33	30,2	cyclictest	833	-21	snmpd	19:26:00	2
3289966	99	33	30,2	cyclictest	833	-21	snmpd	21:54:20	1
3289966	99	33	30,2	cyclictest	833	-21	snmpd	21:00:13	1
3289966	99	33	30,2	cyclictest	833	-21	snmpd	00:26:09	1
3289966	99	33	0,30	cyclictest	0	-21	swapper/1	23:44:50	1
3289965	99	33	30,2	cyclictest	833	-21	snmpd	20:03:43	0
3289965	99	33	30,2	cyclictest	3355613	-21	cat	21:25:16	0
3289965	99	33	0,30	cyclictest	0	-21	swapper/0	19:28:01	0
3289972	99	32	30,2	cyclictest	833	-21	snmpd	00:28:27	7
3289972	99	32	29,2	cyclictest	833	-21	snmpd	19:30:13	7
3289972	99	32	0,31	cyclictest	0	-21	swapper/7	21:58:08	7
3289971	99	32	30,2	cyclictest	833	-21	snmpd	22:10:38	6
3289971	99	32	30,1	cyclictest	833	-21	snmpd	20:06:19	6
3289971	99	32	29,2	cyclictest	3298262	-21	cat	19:25:17	6
3289971	99	32	0,31	cyclictest	0	-21	swapper/6	20:31:36	6
3289971	99	32	0,31	cyclictest	0	-21	swapper/6	00:35:55	6
3289971	99	32	0,30	cyclictest	0	-21	swapper/6	20:55:49	6
3289970	99	32	30,2	cyclictest	833	-21	snmpd	19:59:56	5
3289970	99	32	30,2	cyclictest	833	-21	snmpd	19:59:56	5
3289970	99	32	30,1	cyclictest	833	-21	snmpd	21:20:44	5
3289970	99	32	30,1	cyclictest	833	-21	snmpd	00:22:21	5
3289970	99	32	29,2	cyclictest	833	-21	snmpd	22:38:15	5
3289970	99	32	29,2	cyclictest	3427484	-21	cat	23:55:15	5
3289970	99	32	0,31	cyclictest	0	-21	swapper/5	21:46:16	5
3289970	99	32	0,31	cyclictest	0	-21	swapper/5	21:46:16	5
3289970	99	32	0,31	cyclictest	0	-21	swapper/5	20:04:01	5
3289969	99	32	30,2	cyclictest	833	-21	snmpd	23:15:31	4
3289969	99	32	30,2	cyclictest	3396156	-21	cat	22:50:15	4
3289969	99	32	30,2	cyclictest	3379275	-21	cat	22:15:16	4
3289969	99	32	30,2	cyclictest	3317489	-21	cat	20:05:15	4
3289968	99	32	30,2	cyclictest	833	-21	snmpd	23:29:25	3
3289968	99	32	30,2	cyclictest	833	-21	snmpd	22:00:45	3
3289968	99	32	30,2	cyclictest	833	-21	snmpd	00:20:30	3
3289968	99	32	29,2	cyclictest	833	-21	snmpd	20:47:25	3
3289967	99	32	30,2	cyclictest	833	-21	snmpd	23:10:31	2
3289967	99	32	30,2	cyclictest	833	-21	snmpd	20:28:02	2
3289967	99	32	30,1	cyclictest	833	-21	snmpd	22:13:36	2
3289967	99	32	29,2	cyclictest	833	-21	snmpd	22:02:08	2
3289967	99	32	29,2	cyclictest	833	-21	snmpd	20:31:03	2
3289967	99	32	29,2	cyclictest	833	-21	snmpd	00:04:44	2
3289967	99	32	29,2	cyclictest	3444115	-21	cat	00:30:16	2
3289967	99	32	29,2	cyclictest	3290618	-21	cat	19:10:14	2
3289966	99	32	30,1	cyclictest	833	-21	snmpd	22:19:12	1
3289966	99	32	29,2	cyclictest	833	-21	snmpd	23:16:22	1
3289966	99	32	29,2	cyclictest	833	-21	snmpd	22:40:24	1
3289966	99	32	29,2	cyclictest	833	-21	snmpd	22:09:39	1
3289966	99	32	29,2	cyclictest	833	-21	snmpd	19:50:31	1
3289965	99	32	30,1	cyclictest	833	-21	snmpd	00:12:50	0
3289965	99	32	29,2	cyclictest	833	-21	snmpd	21:44:07	0
3289965	99	32	0,30	cyclictest	0	-21	swapper/0	00:28:18	0
3289965	99	32	0,29	cyclictest	0	-21	swapper/0	19:41:19	0
3289972	99	31	30,1	cyclictest	833	-21	snmpd	21:53:41	7
3289972	99	31	30,1	cyclictest	833	-21	snmpd	20:54:37	7
3289972	99	31	30,1	cyclictest	833	-21	snmpd	20:46:12	7
3289972	99	31	30,1	cyclictest	833	-21	snmpd	19:52:16	7
3289972	99	31	28,2	cyclictest	3429950	-21	cat	00:00:15	7
3289972	99	31	0,31	cyclictest	0	-21	swapper/7	22:46:45	7
3289972	99	31	0,30	cyclictest	0	-21	swapper/7	22:23:24	7
3289972	99	31	0,29	cyclictest	0	-21	swapper/7	21:17:26	7
3289972	99	31	0,1	cyclictest	0	-21	swapper/7	22:32:24	7
3289972	99	31	0,1	cyclictest	0	-21	swapper/7	21:33:07	7
3289971	99	31	30,1	cyclictest	833	-21	snmpd	23:16:28	6
3289971	99	31	30,1	cyclictest	833	-21	snmpd	20:02:07	6
3289971	99	31	30,1	cyclictest	833	-21	snmpd	19:39:19	6
3289971	99	31	29,2	cyclictest	833	-21	snmpd	00:31:36	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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