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 Thu Apr 09, 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
3378321	2	303	276,20	sleep0	0	-21	swapper/0	19:08:22	0
3378146	2	295	260,27	sleep3	0	-21	swapper/3	19:06:00	3
3378286	2	291	257,26	sleep2	0	-21	swapper/2	19:07:51	2
3378416	2	288	269,12	sleep1	0	-21	swapper/1	19:09:43	1
3378411	2	287	267,13	sleep5	0	-21	swapper/5	19:09:39	5
3378273	2	285	266,12	sleep7	0	-21	swapper/7	19:07:40	7
3378272	2	285	266,12	sleep6	0	-21	swapper/6	19:07:40	6
3378354	2	284	265,12	sleep4	0	-21	swapper/4	19:08:50	4
3378913	99	37	33,2	cyclictest	3408054	-21	chrt	20:05:15	6
3378907	99	37	34,1	cyclictest	3524761	-21	ntpq	23:55:24	0
3378910	99	36	34,2	cyclictest	3475142	-21	apt-get	22:20:00	3
3378914	99	35	35,0	cyclictest	0	-21	swapper/7	21:17:16	7
3378913	99	34	0,31	cyclictest	0	-21	swapper/6	21:21:55	6
3378913	99	34	0,31	cyclictest	0	-21	swapper/6	00:34:01	6
3378911	99	34	30,3	cyclictest	449069	-21	snmpd	22:41:21	4
3378914	99	33	30,3	cyclictest	449069	-21	snmpd	22:24:54	7
3378913	99	33	30,2	cyclictest	449069	-21	snmpd	23:50:12	6
3378913	99	33	30,2	cyclictest	3385287	-21	cat	19:20:14	6
3378913	99	33	0,30	cyclictest	0	-21	swapper/6	19:42:19	6
3378912	99	33	30,2	cyclictest	449069	-21	snmpd	20:55:24	5
3378912	99	33	30,2	cyclictest	449069	-21	snmpd	19:36:07	5
3378911	99	33	30,2	cyclictest	449069	-21	snmpd	23:33:56	4
3378911	99	33	29,3	cyclictest	449069	-21	snmpd	00:28:22	4
3378910	99	33	30,3	cyclictest	3427194	-21	kworker/u16:1+flush-8:0	20:55:22	3
3378914	99	32	30,2	cyclictest	449069	-21	snmpd	21:44:40	7
3378914	99	32	30,1	cyclictest	0	-21	swapper/7	00:25:04	7
3378913	99	32	30,1	cyclictest	449069	-21	snmpd	23:43:19	6
3378913	99	32	30,1	cyclictest	449069	-21	snmpd	22:39:22	6
3378913	99	32	30,1	cyclictest	449069	-21	snmpd	22:24:24	6
3378913	99	32	30,1	cyclictest	449069	-21	snmpd	21:08:15	6
3378913	99	32	0,32	cyclictest	0	-21	swapper/6	00:11:30	6
3378913	99	32	0,32	cyclictest	0	-21	swapper/6	00:11:30	6
3378913	99	32	0,31	cyclictest	0	-21	swapper/6	23:21:12	6
3378913	99	32	0,31	cyclictest	0	-21	swapper/6	21:53:00	6
3378913	99	32	0,31	cyclictest	0	-21	swapper/6	19:55:06	6
3378913	99	32	0,31	cyclictest	0	-21	swapper/6	00:09:12	6
3378913	99	32	0,30	cyclictest	0	-21	swapper/6	23:12:55	6
3378913	99	32	0,30	cyclictest	0	-21	swapper/6	22:12:29	6
3378913	99	32	0,30	cyclictest	0	-21	swapper/6	20:18:53	6
3378913	99	32	0,30	cyclictest	0	-21	swapper/6	19:52:47	6
3378912	99	32	30,1	cyclictest	449069	-21	snmpd	20:44:27	5
3378912	99	32	29,2	cyclictest	449069	-21	snmpd	22:00:35	5
3378912	99	32	29,2	cyclictest	449069	-21	snmpd	21:14:32	5
3378912	99	32	28,3	cyclictest	449069	-21	snmpd	23:40:47	5
3378912	99	32	28,3	cyclictest	449069	-21	snmpd	20:21:20	5
3378911	99	32	30,2	cyclictest	449069	-21	snmpd	20:29:45	4
3378911	99	32	30,1	cyclictest	449069	-21	snmpd	22:15:56	4
3378911	99	32	29,3	cyclictest	449069	-21	snmpd	22:32:19	4
3378911	99	32	29,2	cyclictest	449069	-21	snmpd	21:14:55	4
3378911	99	32	0,31	cyclictest	0	-21	swapper/4	22:25:16	4
3378911	99	32	0,31	cyclictest	0	-21	swapper/4	22:25:16	4
3378911	99	32	0,31	cyclictest	0	-21	swapper/4	19:20:31	4
3378910	99	32	30,2	cyclictest	449069	-21	snmpd	22:04:44	3
3378910	99	32	30,2	cyclictest	449069	-21	snmpd	21:15:47	3
3378910	99	32	30,2	cyclictest	449069	-21	snmpd	20:10:23	3
3378910	99	32	30,2	cyclictest	3526889	-21	cat	00:00:13	3
3378909	99	32	30,2	cyclictest	449069	-21	snmpd	23:16:26	2
3378909	99	32	30,2	cyclictest	449069	-21	snmpd	22:58:53	2
3378909	99	32	30,2	cyclictest	449069	-21	snmpd	22:02:14	2
3378909	99	32	30,2	cyclictest	449069	-21	snmpd	21:06:18	2
3378909	99	32	30,2	cyclictest	449069	-21	snmpd	00:38:10	2
3378909	99	32	30,2	cyclictest	3379581	-21	cat	19:10:13	2
3378907	99	32	30,2	cyclictest	449069	-21	snmpd	22:36:57	0
3378907	99	32	30,2	cyclictest	449069	-21	snmpd	00:18:10	0
3378907	99	32	30,2	cyclictest	449069	-21	snmpd	00:18:10	0
3378907	99	32	30,2	cyclictest	3443390	-21	cat	21:15:17	0
3378907	99	32	0,31	cyclictest	0	-21	swapper/0	19:35:04	0
3378914	99	31	30,1	cyclictest	449069	-21	snmpd	19:49:48	7
3378914	99	31	28,2	cyclictest	449069	-21	snmpd	19:26:10	7
3378914	99	31	0,31	cyclictest	0	-21	swapper/7	23:49:57	7
3378914	99	31	0,31	cyclictest	0	-21	swapper/7	19:58:17	7
3378914	99	31	0,30	cyclictest	0	-21	swapper/7	21:00:00	7
3378914	99	31	0,30	cyclictest	0	-21	swapper/7	20:52:57	7
3378914	99	31	0,30	cyclictest	0	-21	swapper/7	20:45:39	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	23:21:29	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	23:10:14	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	23:08:58	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	22:47:39	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	22:38:09	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	21:00:14	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	20:33:45	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	20:33:45	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	20:26:17	7
3378914	99	31	0,1	cyclictest	0	-21	swapper/7	00:05:54	7
3378913	99	31	30,1	cyclictest	449069	-21	snmpd	20:49:00	6
3378913	99	31	0,30	cyclictest	0	-21	swapper/6	23:33:12	6
3378913	99	31	0,30	cyclictest	0	-21	swapper/6	21:35:10	6
3378913	99	31	0,30	cyclictest	0	-21	swapper/6	21:04:43	6
3378913	99	31	0,30	cyclictest	0	-21	swapper/6	00:20:46	6
3378913	99	31	0,29	cyclictest	0	-21	swapper/6	23:01:43	6
3378913	99	31	0,28	cyclictest	0	-21	swapper/6	21:16:25	6
3378913	99	31	0,1	cyclictest	0	-21	swapper/6	22:03:14	6
3378912	99	31	29,1	cyclictest	449069	-21	snmpd	22:41:27	5
3378912	99	31	28,2	cyclictest	449069	-21	snmpd	21:55:08	5
3378912	99	31	28,2	cyclictest	449069	-21	snmpd	20:15:18	5
3378912	99	31	27,3	cyclictest	449069	-21	snmpd	00:31:04	5
3378912	99	31	0,30	cyclictest	0	-21	swapper/5	23:39:02	5
3378912	99	31	0,30	cyclictest	0	-21	swapper/5	23:32:29	5
3378912	99	31	0,30	cyclictest	0	-21	swapper/5	19:21:04	5
3378912	99	31	0,1	cyclictest	0	-21	swapper/5	21:33:46	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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