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 Mar 07, 2026 00:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2790585	2	302	294,5	sleep6	0	-21	swapper/6	19:06:12	6
2788752	2	299	290,6	sleep4	0	-21	swapper/4	19:05:06	4
2790776	2	297	277,13	sleep5	0	-21	swapper/5	19:08:54	5
2790654	2	297	289,5	sleep0	0	-21	swapper/0	19:07:11	0
2790621	2	293	256,13	sleep3	0	-21	swapper/3	19:06:42	3
2790787	2	287	267,13	sleep7	0	-21	swapper/7	19:09:03	7
2790629	2	287	267,13	sleep2	0	-21	swapper/2	19:06:50	2
2790761	2	286	266,13	sleep1	0	-21	swapper/1	19:08:41	1
2791589	99	37	0,36	cyclictest	2930334	-21	sed	23:40:29	3
2791591	99	34	29,4	cyclictest	449069	-21	snmpd	19:41:39	5
2791591	99	34	29,4	cyclictest	2930013	-21	ntpq	23:40:26	5
2791589	99	34	30,3	cyclictest	449069	-21	snmpd	23:20:43	3
2791591	99	33	30,2	cyclictest	449069	-21	snmpd	23:03:35	5
2791591	99	33	30,2	cyclictest	449069	-21	snmpd	21:16:13	5
2791591	99	33	30,2	cyclictest	2871647	-21	cat	21:45:15	5
2791591	99	33	0,32	cyclictest	2892374	-21	ntpq	22:25:24	5
2791591	99	33	0,32	cyclictest	0	-21	swapper/5	19:23:22	5
2791591	99	33	0,30	cyclictest	0	-21	swapper/5	21:59:02	5
2791591	99	33	0,30	cyclictest	0	-21	swapper/5	00:14:27	5
2791590	99	33	30,2	cyclictest	449069	-21	snmpd	21:05:07	4
2791590	99	33	30,2	cyclictest	449069	-21	snmpd	20:05:20	4
2791586	99	33	30,2	cyclictest	449069	-21	snmpd	23:25:31	0
2791586	99	33	30,2	cyclictest	449069	-21	snmpd	22:54:31	0
2791586	99	33	30,2	cyclictest	2876626	-21	cat	21:55:16	0
2791586	99	33	29,4	cyclictest	449069	-21	snmpd	20:58:48	0
2791586	99	33	28,4	cyclictest	449069	-21	snmpd	23:47:26	0
2791586	99	33	0,32	cyclictest	0	-21	swapper/0	00:25:03	0
2791586	99	33	0,1	cyclictest	0	-21	swapper/0	20:54:03	0
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	23:58:32	7
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	23:24:22	7
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	23:17:16	7
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	22:34:57	7
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	22:17:32	7
2791593	99	32	30,2	cyclictest	449069	-21	snmpd	00:17:09	7
2791593	99	32	0,31	cyclictest	0	-21	swapper/7	23:41:50	7
2791592	99	32	30,2	cyclictest	449069	-21	snmpd	23:21:58	6
2791592	99	32	30,2	cyclictest	449069	-21	snmpd	20:33:39	6
2791592	99	32	30,2	cyclictest	449069	-21	snmpd	20:27:30	6
2791592	99	32	30,2	cyclictest	2872163	-21	ntpq	21:45:26	6
2791592	99	32	30,2	cyclictest	2810492	-21	cat	19:45:16	6
2791591	99	32	30,1	cyclictest	449069	-21	snmpd	23:06:40	5
2791591	99	32	30,1	cyclictest	449069	-21	snmpd	22:04:44	5
2791591	99	32	30,1	cyclictest	449069	-21	snmpd	20:40:45	5
2791591	99	32	29,3	cyclictest	449069	-21	snmpd	21:31:49	5
2791591	99	32	29,2	cyclictest	449069	-21	snmpd	19:54:48	5
2791591	99	32	29,2	cyclictest	2954761	-21	cat	00:30:15	5
2791591	99	32	0,31	cyclictest	0	-21	swapper/5	23:34:45	5
2791591	99	32	0,31	cyclictest	0	-21	swapper/5	23:34:44	5
2791591	99	32	0,30	cyclictest	0	-21	swapper/5	20:18:33	5
2791590	99	32	30,2	cyclictest	449069	-21	snmpd	22:31:51	4
2791590	99	32	30,1	cyclictest	449069	-21	snmpd	22:38:27	4
2791590	99	32	30,1	cyclictest	449069	-21	snmpd	21:40:20	4
2791590	99	32	30,1	cyclictest	449069	-21	snmpd	21:40:19	4
2791590	99	32	29,3	cyclictest	449069	-21	snmpd	20:25:00	4
2791590	99	32	29,2	cyclictest	449069	-21	snmpd	21:14:52	4
2791590	99	32	0,30	cyclictest	0	-21	swapper/4	22:57:25	4
2791590	99	32	0,30	cyclictest	0	-21	swapper/4	20:30:12	4
2791590	99	32	0,30	cyclictest	0	-21	swapper/4	20:10:44	4
2791590	99	32	0,30	cyclictest	0	-21	swapper/4	19:36:54	4
2791589	99	32	30,1	cyclictest	449069	-21	snmpd	22:43:19	3
2791589	99	32	30,1	cyclictest	449069	-21	snmpd	22:08:41	3
2791589	99	32	30,1	cyclictest	449069	-21	snmpd	19:43:17	3
2791589	99	32	30,1	cyclictest	449069	-21	snmpd	19:11:47	3
2791589	99	32	29,2	cyclictest	449069	-21	snmpd	19:59:02	3
2791589	99	32	28,3	cyclictest	449069	-21	snmpd	20:03:05	3
2791589	99	32	26,5	cyclictest	449069	-21	snmpd	23:11:07	3
2791589	99	32	0,31	cyclictest	0	-21	swapper/3	23:57:44	3
2791589	99	32	0,31	cyclictest	0	-21	swapper/3	23:02:22	3
2791589	99	32	0,31	cyclictest	0	-21	swapper/3	21:18:07	3
2791588	99	32	0,31	cyclictest	0	-21	swapper/2	20:25:15	2
2791588	99	32	0,31	cyclictest	0	-21	swapper/2	19:53:50	2
2791587	99	32	30,2	cyclictest	449069	-21	snmpd	20:02:23	1
2791587	99	32	0,32	cyclictest	0	-21	swapper/1	00:15:30	1
2791587	99	32	0,31	cyclictest	0	-21	swapper/1	21:34:55	1
2791586	99	32	30,1	cyclictest	449069	-21	snmpd	23:24:52	0
2791586	99	32	30,1	cyclictest	449069	-21	snmpd	21:07:52	0
2791586	99	32	30,1	cyclictest	449069	-21	snmpd	20:48:01	0
2791586	99	32	30,1	cyclictest	449069	-21	snmpd	20:23:15	0
2791586	99	32	29,2	cyclictest	449069	-21	snmpd	00:01:53	0
2791586	99	32	27,5	cyclictest	449069	-21	snmpd	20:35:54	0
2791586	99	32	0,31	cyclictest	0	-21	swapper/0	19:38:53	0
2791586	99	32	0,30	cyclictest	0	-21	swapper/0	22:48:00	0
2791593	99	31	30,1	cyclictest	449069	-21	snmpd	22:39:18	7
2791593	99	31	30,1	cyclictest	449069	-21	snmpd	21:07:46	7
2791593	99	31	30,1	cyclictest	2943559	-21	kworker/7:0+events	00:32:58	7
2791593	99	31	30,1	cyclictest	2943559	-21	kworker/7:0+events	00:25:18	7
2791593	99	31	30,1	cyclictest	2943559	-21	kworker/7:0+events	00:20:14	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	23:50:15	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	23:39:42	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	23:00:22	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	22:55:30	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	22:40:22	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	22:07:56	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	22:00:25	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:59:58	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:50:41	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:45:28	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:44:40	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:44:40	7
2791593	99	31	30,1	cyclictest	2809630	-21	kworker/7:1+events	21:30:14	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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