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 24, 2026 00:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3559682	2	317	287,22	sleep7	0	-21	swapper/7	19:05:30	7
3560559	2	298	262,12	sleep3	0	-21	swapper/3	19:09:29	3
3560449	2	297	260,13	sleep6	0	-21	swapper/6	19:07:55	6
3560458	2	292	258,26	sleep5	0	-21	swapper/5	19:08:01	5
3560298	2	289	270,12	sleep1	0	-21	swapper/1	19:05:48	1
3560445	2	288	268,13	sleep2	0	-21	swapper/2	19:07:50	2
3560327	2	288	268,13	sleep0	0	-21	swapper/0	19:06:12	0
3560382	2	287	266,13	sleep4	0	-21	swapper/4	19:06:55	4
3561073	99	44	41,2	cyclictest	3634388	-21	kworker/u16:4+flush-8:0	22:00:00	3
3561074	99	39	38,1	cyclictest	3611426	-21	kworker/u16:0+flush-8:0	21:25:26	4
3561071	99	34	30,3	cyclictest	449069	-21	snmpd	20:40:23	1
3561070	99	34	30,3	cyclictest	3567465	-21	cat	19:20:14	0
3561077	99	33	31,2	cyclictest	449069	-21	snmpd	00:05:51	7
3561077	99	33	30,2	cyclictest	449069	-21	snmpd	21:55:01	7
3561076	99	33	30,2	cyclictest	3680319	-21	kworker/u16:2+flush-8:0	23:20:27	6
3561076	99	33	1,31	cyclictest	3674821	-21	perf	22:55:00	6
3561075	99	33	29,3	cyclictest	449069	-21	snmpd	22:38:38	5
3561075	99	33	29,3	cyclictest	3569969	-21	cat	19:25:15	5
3561074	99	33	32,1	cyclictest	3642057	-21	kworker/u16:2+flush-8:0	21:55:25	4
3561074	99	33	31,2	cyclictest	3692811	-21	kworker/u16:3+flush-8:0	00:00:00	4
3561073	99	33	30,3	cyclictest	449069	-21	snmpd	22:41:12	3
3561072	99	33	30,2	cyclictest	449069	-21	snmpd	22:59:18	2
3561072	99	33	30,2	cyclictest	449069	-21	snmpd	22:35:56	2
3561072	99	33	30,2	cyclictest	449069	-21	snmpd	21:16:40	2
3561072	99	33	0,1	cyclictest	0	-21	swapper/2	23:36:31	2
3561071	99	33	30,2	cyclictest	449069	-21	snmpd	23:52:14	1
3561071	99	33	30,2	cyclictest	449069	-21	snmpd	23:29:40	1
3561071	99	33	30,2	cyclictest	449069	-21	snmpd	22:59:45	1
3561071	99	33	30,2	cyclictest	449069	-21	snmpd	21:08:39	1
3561070	99	33	0,32	cyclictest	0	-21	swapper/0	20:42:59	0
3561070	99	33	0,31	cyclictest	0	-21	swapper/0	21:41:50	0
3561077	99	32	30,2	cyclictest	3183229	-21	kworker/7:1+events	19:57:02	7
3561077	99	32	30,1	cyclictest	449069	-21	snmpd	00:25:25	7
3561077	99	32	29,2	cyclictest	449069	-21	snmpd	21:19:45	7
3561077	99	32	29,2	cyclictest	449069	-21	snmpd	00:21:29	7
3561076	99	32	30,2	cyclictest	516654	-21	ntpd	00:19:43	6
3561076	99	32	30,2	cyclictest	449069	-21	snmpd	23:15:36	6
3561076	99	32	30,2	cyclictest	449069	-21	snmpd	21:17:46	6
3561076	99	32	30,2	cyclictest	449069	-21	snmpd	20:48:25	6
3561076	99	32	30,2	cyclictest	3678870	-21	cat	23:00:15	6
3561074	99	32	30,2	cyclictest	449069	-21	snmpd	23:32:35	4
3561074	99	32	30,2	cyclictest	449069	-21	snmpd	23:25:34	4
3561074	99	32	30,2	cyclictest	3602745	-21	cat	20:30:16	4
3561074	99	32	30,2	cyclictest	3602745	-21	cat	20:30:16	4
3561074	99	32	0,31	cyclictest	0	-21	swapper/4	22:23:32	4
3561074	99	32	0,31	cyclictest	0	-21	swapper/4	22:23:32	4
3561072	99	32	30,1	cyclictest	449069	-21	snmpd	23:47:32	2
3561072	99	32	30,1	cyclictest	449069	-21	snmpd	23:14:55	2
3561072	99	32	30,1	cyclictest	449069	-21	snmpd	23:07:42	2
3561072	99	32	30,1	cyclictest	449069	-21	snmpd	19:25:26	2
3561072	99	32	29,2	cyclictest	449069	-21	snmpd	20:50:28	2
3561072	99	32	0,31	cyclictest	0	-21	swapper/2	23:25:14	2
3561072	99	32	0,31	cyclictest	0	-21	swapper/2	21:31:16	2
3561072	99	32	0,31	cyclictest	0	-21	swapper/2	21:14:24	2
3561072	99	32	0,31	cyclictest	0	-21	swapper/2	21:06:51	2
3561071	99	32	30,1	cyclictest	449069	-21	snmpd	23:21:28	1
3561071	99	32	30,1	cyclictest	449069	-21	snmpd	23:04:12	1
3561071	99	32	30,1	cyclictest	449069	-21	snmpd	20:23:00	1
3561071	99	32	29,2	cyclictest	449069	-21	snmpd	19:56:05	1
3561070	99	32	29,2	cyclictest	449069	-21	snmpd	21:59:19	0
3561070	99	32	0,30	cyclictest	0	-21	swapper/0	22:34:29	0
3561077	99	31	30,1	cyclictest	449069	-21	snmpd	22:14:41	7
3561077	99	31	30,1	cyclictest	449069	-21	snmpd	20:28:06	7
3561077	99	31	30,1	cyclictest	449069	-21	snmpd	20:28:05	7
3561077	99	31	30,1	cyclictest	449069	-21	snmpd	19:40:58	7
3561077	99	31	29,1	cyclictest	449069	-21	snmpd	21:47:26	7
3561077	99	31	0,30	cyclictest	0	-21	swapper/7	21:10:43	7
3561076	99	31	30,1	cyclictest	449069	-21	snmpd	00:37:21	6
3561076	99	31	29,2	cyclictest	449069	-21	snmpd	00:07:20	6
3561076	99	31	0,31	cyclictest	0	-21	swapper/6	21:57:01	6
3561076	99	31	0,31	cyclictest	0	-21	swapper/6	21:53:16	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	23:07:42	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	22:22:57	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	22:22:56	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	20:31:15	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	20:31:14	6
3561076	99	31	0,30	cyclictest	0	-21	swapper/6	19:14:24	6
3561076	99	31	0,1	cyclictest	0	-21	swapper/6	22:04:38	6
3561076	99	31	0,1	cyclictest	0	-21	swapper/6	20:56:43	6
3561076	99	31	0,1	cyclictest	0	-21	swapper/6	20:50:21	6
3561076	99	31	0,1	cyclictest	0	-21	swapper/6	19:44:38	6
3561076	99	31	0,1	cyclictest	0	-21	swapper/6	00:00:24	6
3561075	99	31	30,1	cyclictest	449069	-21	snmpd	00:06:20	5
3561075	99	31	29,2	cyclictest	449069	-21	snmpd	23:47:10	5
3561075	99	31	29,1	cyclictest	449069	-21	snmpd	22:56:12	5
3561075	99	31	29,1	cyclictest	449069	-21	snmpd	19:40:25	5
3561075	99	31	28,2	cyclictest	449069	-21	snmpd	23:33:07	5
3561075	99	31	28,2	cyclictest	449069	-21	snmpd	21:00:27	5
3561075	99	31	28,2	cyclictest	449069	-21	snmpd	19:48:49	5
3561074	99	31	30,1	cyclictest	449069	-21	snmpd	22:09:09	4
3561074	99	31	30,1	cyclictest	449069	-21	snmpd	20:57:42	4
3561074	99	31	30,1	cyclictest	449069	-21	snmpd	20:16:53	4
3561074	99	31	29,2	cyclictest	449069	-21	snmpd	23:00:09	4
3561074	99	31	29,2	cyclictest	449069	-21	snmpd	22:15:47	4
3561074	99	31	29,2	cyclictest	449069	-21	snmpd	00:13:41	4
3561074	99	31	29,2	cyclictest	449069	-21	snmpd	00:13:41	4
3561074	99	31	29,2	cyclictest	449069	-21	snmpd	00:06:15	4
3561074	99	31	0,31	cyclictest	0	-21	swapper/4	21:40:19	4
3561074	99	31	0,30	cyclictest	0	-21	swapper/4	22:38:05	4
3561074	99	31	0,30	cyclictest	0	-21	swapper/4	19:55:08	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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