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 Dec 24, 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
4143943	2	300	264,12	sleep3	0	-21	swapper/3	19:08:36	3
4144028	2	289	270,12	sleep5	0	-21	swapper/5	19:09:52	5
4143991	2	287	268,12	sleep4	0	-21	swapper/4	19:09:18	4
4143956	2	287	267,13	sleep7	0	-21	swapper/7	19:08:49	7
4143743	2	286	266,13	sleep6	0	-21	swapper/6	19:05:50	6
4143851	2	285	266,12	sleep1	0	-21	swapper/1	19:07:22	1
4143933	2	284	264,13	sleep2	0	-21	swapper/2	19:08:28	2
4143891	2	282	262,13	sleep0	0	-21	swapper/0	19:07:53	0
4144512	99	34	30,3	cyclictest	870	-21	snmpd	22:45:28	1
4144518	99	33	30,2	cyclictest	870	-21	snmpd	22:04:52	7
4144518	99	33	30,2	cyclictest	870	-21	snmpd	20:43:23	7
4144518	99	33	30,2	cyclictest	870	-21	snmpd	20:39:55	7
4144518	99	33	30,2	cyclictest	4164196	-21	cat	19:45:20	7
4144518	99	33	30,2	cyclictest	4148358	-21	cat	19:15:16	7
4144518	99	33	0,30	cyclictest	0	-21	swapper/7	20:23:10	7
4144517	99	33	30,2	cyclictest	58331	-21	cat	22:40:15	6
4144517	99	33	30,2	cyclictest	111177	-21	cat	00:25:16	6
4144517	99	33	0,30	cyclictest	0	-21	swapper/6	21:30:36	6
4144515	99	33	30,2	cyclictest	870	-21	snmpd	23:05:54	4
4144515	99	33	30,2	cyclictest	4181974	-21	cat	20:20:17	4
4144515	99	33	0,32	cyclictest	0	-21	swapper/4	23:22:26	4
4144515	99	33	0,32	cyclictest	0	-21	swapper/4	00:04:29	4
4144515	99	33	0,31	cyclictest	0	-21	swapper/4	23:27:37	4
4144515	99	33	0,30	cyclictest	0	-21	swapper/4	00:24:10	4
4144515	99	33	0,30	cyclictest	0	-21	swapper/4	00:18:54	4
4144515	99	33	0,1	cyclictest	0	-21	swapper/4	20:48:19	4
4144514	99	33	30,2	cyclictest	870	-21	snmpd	21:25:09	3
4144514	99	33	0,31	cyclictest	0	-21	swapper/3	00:33:21	3
4144512	99	33	30,2	cyclictest	870	-21	snmpd	23:51:11	1
4144512	99	33	30,2	cyclictest	870	-21	snmpd	21:52:28	1
4144512	99	33	30,2	cyclictest	68378	-21	cat	23:00:19	1
4144512	99	33	30,2	cyclictest	55837	-21	cat	22:35:16	1
4144518	99	32	30,1	cyclictest	870	-21	snmpd	23:22:38	7
4144518	99	32	30,1	cyclictest	870	-21	snmpd	22:22:24	7
4144518	99	32	30,1	cyclictest	870	-21	snmpd	22:18:26	7
4144518	99	32	30,1	cyclictest	870	-21	snmpd	22:05:02	7
4144518	99	32	29,2	cyclictest	870	-21	snmpd	21:50:55	7
4144518	99	32	29,2	cyclictest	870	-21	snmpd	21:33:03	7
4144518	99	32	29,2	cyclictest	870	-21	snmpd	20:18:29	7
4144518	99	32	29,2	cyclictest	870	-21	snmpd	00:23:49	7
4144518	99	32	0,31	cyclictest	0	-21	swapper/7	21:55:26	7
4144518	99	32	0,30	cyclictest	0	-21	swapper/7	23:41:19	7
4144518	99	32	0,30	cyclictest	0	-21	swapper/7	20:01:39	7
4144517	99	32	29,2	cyclictest	75862	-21	cat	23:15:16	6
4144517	99	32	0,31	cyclictest	0	-21	swapper/6	23:49:59	6
4144517	99	32	0,31	cyclictest	0	-21	swapper/6	20:21:49	6
4144517	99	32	0,30	cyclictest	0	-21	swapper/6	22:27:18	6
4144517	99	32	0,30	cyclictest	0	-21	swapper/6	22:23:08	6
4144517	99	32	0,30	cyclictest	0	-21	swapper/6	21:39:25	6
4144517	99	32	0,30	cyclictest	0	-21	swapper/6	21:19:29	6
4144517	99	32	0,30	cyclictest	0	-21	swapper/6	00:09:23	6
4144516	99	32	30,2	cyclictest	870	-21	snmpd	19:15:39	5
4144516	99	32	30,2	cyclictest	870	-21	snmpd	00:35:45	5
4144516	99	32	30,2	cyclictest	80854	-21	cat	23:25:13	5
4144515	99	32	30,2	cyclictest	870	-21	snmpd	20:05:34	4
4144515	99	32	30,1	cyclictest	870	-21	snmpd	21:53:07	4
4144515	99	32	30,1	cyclictest	870	-21	snmpd	20:29:13	4
4144515	99	32	30,1	cyclictest	870	-21	snmpd	19:45:40	4
4144515	99	32	26,5	cyclictest	58352	-21	cat	22:40:15	4
4144515	99	32	0,30	cyclictest	0	-21	swapper/4	23:33:23	4
4144515	99	32	0,30	cyclictest	0	-21	swapper/4	23:33:22	4
4144515	99	32	0,30	cyclictest	0	-21	swapper/4	20:17:52	4
4144515	99	32	0,30	cyclictest	0	-21	swapper/4	20:10:39	4
4144515	99	32	0,29	cyclictest	0	-21	swapper/4	21:10:00	4
4144514	99	32	30,2	cyclictest	870	-21	snmpd	21:19:20	3
4144514	99	32	30,2	cyclictest	870	-21	snmpd	19:29:50	3
4144514	99	32	30,2	cyclictest	30568	-21	cat	21:45:14	3
4144514	99	32	1,30	cyclictest	51395	-21	ntpq	22:25:26	3
4144513	99	32	30,2	cyclictest	870	-21	snmpd	23:43:29	2
4144513	99	32	30,2	cyclictest	4179451	-21	cat	20:15:16	2
4144513	99	32	29,3	cyclictest	870	-21	snmpd	19:53:16	2
4144513	99	32	29,3	cyclictest	870	-21	snmpd	19:53:15	2
4144512	99	32	30,2	cyclictest	870	-21	snmpd	22:22:21	1
4144512	99	32	30,2	cyclictest	870	-21	snmpd	19:22:53	1
4144512	99	32	30,1	cyclictest	870	-21	snmpd	20:43:35	1
4144512	99	32	29,2	cyclictest	870	-21	snmpd	23:36:19	1
4144512	99	32	29,2	cyclictest	870	-21	snmpd	23:36:19	1
4144512	99	32	29,2	cyclictest	870	-21	snmpd	22:06:49	1
4144512	99	32	29,2	cyclictest	870	-21	snmpd	21:55:02	1
4144512	99	32	29,2	cyclictest	870	-21	snmpd	00:37:45	1
4144512	99	32	29,2	cyclictest	4189464	-21	cat	20:35:16	1
4144512	99	32	0,30	cyclictest	0	-21	swapper/1	23:29:28	1
4144511	99	32	30,2	cyclictest	870	-21	snmpd	21:58:02	0
4144511	99	32	30,2	cyclictest	870	-21	snmpd	21:20:11	0
4144511	99	32	30,2	cyclictest	870	-21	snmpd	20:19:17	0
4144511	99	32	30,2	cyclictest	870	-21	snmpd	20:09:21	0
4144511	99	32	30,2	cyclictest	870	-21	snmpd	00:18:13	0
4144511	99	32	30,1	cyclictest	870	-21	snmpd	23:27:40	0
4144511	99	32	30,1	cyclictest	870	-21	snmpd	22:16:17	0
4144518	99	31	30,1	cyclictest	870	-21	snmpd	23:17:37	7
4144518	99	31	30,1	cyclictest	870	-21	snmpd	20:49:55	7
4144518	99	31	29,1	cyclictest	870	-21	snmpd	23:48:26	7
4144518	99	31	29,1	cyclictest	870	-21	snmpd	22:31:32	7
4144518	99	31	28,2	cyclictest	870	-21	snmpd	23:51:47	7
4144518	99	31	28,2	cyclictest	870	-21	snmpd	00:14:26	7
4144518	99	31	0,30	cyclictest	0	-21	swapper/7	20:32:53	7
4144518	99	31	0,30	cyclictest	0	-21	swapper/7	00:36:24	7
4144518	99	31	0,30	cyclictest	0	-21	swapper/7	00:26:48	7
4144518	99	31	0,28	cyclictest	0	-21	swapper/7	21:17:27	7
4144518	99	31	0,1	cyclictest	0	-21	swapper/7	22:44:33	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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