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 16, 2026 00:46:24)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
473609	2	318	307,6	sleep0	0	-21	swapper/0	19:05:16	0
475015	2	298	280,11	sleep5	0	-21	swapper/5	19:06:18	5
475081	2	293	285,5	sleep1	0	-21	swapper/1	19:07:10	1
474978	2	293	259,26	sleep2	0	-21	swapper/2	19:05:50	2
475236	2	288	268,13	sleep3	0	-21	swapper/3	19:09:21	3
475045	2	288	269,12	sleep6	0	-21	swapper/6	19:06:42	6
473176	2	288	268,13	sleep7	0	-21	swapper/7	19:05:07	7
474999	2	287	266,13	sleep4	0	-21	swapper/4	19:06:08	4
570416	2	72	0,0	sleep5	0	-21	swapper/5	22:15:14	5
475730	99	37	34,2	cyclictest	608120	-21	kworker/u16:2+flush-8:0	23:50:26	1
475741	99	34	31,2	cyclictest	478623	-21	ntpq	19:15:04	5
475741	99	34	30,3	cyclictest	449069	-21	snmpd	20:59:23	5
475747	99	33	30,2	cyclictest	586102	-21	cat	22:45:15	7
475747	99	33	0,30	cyclictest	0	-21	swapper/7	21:03:26	7
475747	99	33	0,30	cyclictest	0	-21	swapper/7	20:09:48	7
475738	99	33	30,2	cyclictest	639732	-21	cat	00:30:17	4
475733	99	33	30,2	cyclictest	449069	-21	snmpd	21:17:17	2
475733	99	33	30,2	cyclictest	449069	-21	snmpd	21:17:17	2
475733	99	33	30,2	cyclictest	449069	-21	snmpd	21:00:05	2
475730	99	33	30,2	cyclictest	449069	-21	snmpd	21:08:56	1
475730	99	33	30,2	cyclictest	449069	-21	snmpd	19:15:01	1
475730	99	33	30,2	cyclictest	449069	-21	snmpd	19:11:16	1
475730	99	33	30,2	cyclictest	449069	-21	snmpd	00:04:31	1
475730	99	33	0,32	cyclictest	0	-21	swapper/1	21:50:15	1
475730	99	33	0,30	cyclictest	0	-21	swapper/1	22:48:17	1
475730	99	33	0,30	cyclictest	0	-21	swapper/1	20:02:06	1
475730	99	33	0,30	cyclictest	0	-21	swapper/1	19:37:02	1
475747	99	32	30,1	cyclictest	449069	-21	snmpd	22:52:14	7
475747	99	32	29,2	cyclictest	575559	-21	cat	22:25:13	7
475747	99	32	29,2	cyclictest	449069	-21	snmpd	23:29:48	7
475747	99	32	29,2	cyclictest	449069	-21	snmpd	22:37:22	7
475747	99	32	29,2	cyclictest	449069	-21	snmpd	00:20:50	7
475747	99	32	0,31	cyclictest	0	-21	swapper/7	23:17:12	7
475745	99	32	31,1	cyclictest	559151	-21	kworker/u16:0+events_unbound	21:55:14	6
475745	99	32	31,1	cyclictest	16	-21	pr/tty0	22:39:50	6
475745	99	32	30,2	cyclictest	614414	-21	cat	23:40:14	6
475745	99	32	30,2	cyclictest	449069	-21	snmpd	22:48:26	6
475745	99	32	30,2	cyclictest	449069	-21	snmpd	19:42:47	6
475741	99	32	30,2	cyclictest	449069	-21	snmpd	19:53:53	5
475741	99	32	0,30	cyclictest	0	-21	swapper/5	23:04:08	5
475738	99	32	30,1	cyclictest	449069	-21	snmpd	23:37:43	4
475738	99	32	30,1	cyclictest	449069	-21	snmpd	22:30:07	4
475738	99	32	30,1	cyclictest	449069	-21	snmpd	21:34:24	4
475738	99	32	29,2	cyclictest	449069	-21	snmpd	21:40:21	4
475738	99	32	29,2	cyclictest	449069	-21	snmpd	21:21:17	4
475738	99	32	29,2	cyclictest	449069	-21	snmpd	19:17:52	4
475736	99	32	30,2	cyclictest	449069	-21	snmpd	21:44:39	3
475736	99	32	30,2	cyclictest	449069	-21	snmpd	21:01:47	3
475733	99	32	30,2	cyclictest	560234	-21	cat	21:55:15	2
475733	99	32	30,2	cyclictest	522438	-21	cat	20:40:14	2
475733	99	32	30,2	cyclictest	449069	-21	snmpd	22:48:47	2
475730	99	32	30,2	cyclictest	449069	-21	snmpd	21:24:35	1
475730	99	32	30,1	cyclictest	449069	-21	snmpd	23:40:22	1
475730	99	32	30,1	cyclictest	449069	-21	snmpd	23:31:36	1
475730	99	32	30,1	cyclictest	449069	-21	snmpd	20:29:31	1
475730	99	32	0,31	cyclictest	0	-21	swapper/1	22:10:14	1
475727	99	32	30,2	cyclictest	449069	-21	snmpd	20:52:25	0
475727	99	32	30,2	cyclictest	449069	-21	snmpd	00:39:12	0
475727	99	32	29,2	cyclictest	449069	-21	snmpd	23:23:18	0
475727	99	32	0,1	cyclictest	0	-21	swapper/0	19:24:32	0
475747	99	31	30,1	cyclictest	449069	-21	snmpd	00:31:47	7
475747	99	31	29,2	cyclictest	449069	-21	snmpd	21:08:41	7
475747	99	31	28,2	cyclictest	583341	-21	cat	22:40:13	7
475747	99	31	28,2	cyclictest	552755	-21	cat	21:40:14	7
475747	99	31	28,2	cyclictest	449069	-21	snmpd	20:46:31	7
475747	99	31	0,31	cyclictest	0	-21	swapper/7	00:16:59	7
475747	99	31	0,30	cyclictest	0	-21	swapper/7	23:46:16	7
475747	99	31	0,30	cyclictest	0	-21	swapper/7	23:32:15	7
475747	99	31	0,30	cyclictest	0	-21	swapper/7	20:55:28	7
475747	99	31	0,30	cyclictest	0	-21	swapper/7	00:26:35	7
475747	99	31	0,1	cyclictest	0	-21	swapper/7	23:08:14	7
475747	99	31	0,1	cyclictest	0	-21	swapper/7	23:08:14	7
475747	99	31	0,1	cyclictest	0	-21	swapper/7	22:20:25	7
475745	99	31	31,0	cyclictest	0	-21	swapper/6	21:00:38	6
475745	99	31	30,1	cyclictest	556641	-21	kworker/u16:2+events_unbound	22:10:15	6
475745	99	31	30,1	cyclictest	537	-40	kipmi0	20:00:18	6
475745	99	31	30,1	cyclictest	449069	-21	snmpd	23:02:38	6
475745	99	31	30,1	cyclictest	449069	-21	snmpd	22:15:49	6
475745	99	31	30,1	cyclictest	449069	-21	snmpd	00:37:57	6
475745	99	31	30,1	cyclictest	449069	-21	snmpd	00:34:42	6
475745	99	31	29,2	cyclictest	449069	-21	snmpd	23:19:45	6
475745	99	31	29,2	cyclictest	449069	-21	snmpd	19:24:59	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	23:45:22	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	22:53:23	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	21:11:50	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	20:52:52	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	20:20:27	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	20:07:12	6
475745	99	31	0,30	cyclictest	0	-21	swapper/6	19:46:47	6
475745	99	31	0,1	cyclictest	0	-21	swapper/6	23:10:03	6
475745	99	31	0,1	cyclictest	0	-21	swapper/6	22:06:54	6
475745	99	31	0,1	cyclictest	0	-21	swapper/6	20:59:47	6
475745	99	31	0,1	cyclictest	0	-21	swapper/6	19:32:35	6
475741	99	31	30,1	cyclictest	449069	-21	snmpd	22:10:55	5
475741	99	31	30,1	cyclictest	449069	-21	snmpd	22:03:32	5
475741	99	31	30,1	cyclictest	449069	-21	snmpd	20:02:42	5
475741	99	31	30,1	cyclictest	449069	-21	snmpd	19:42:08	5
475741	99	31	29,2	cyclictest	449069	-21	snmpd	23:47:37	5
475741	99	31	29,2	cyclictest	449069	-21	snmpd	23:44:22	5
475741	99	31	0,30	cyclictest	0	-21	swapper/5	21:10:05	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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