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 21, 2026 00:46:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1209810	2	307	293,10	sleep4	0	-21	swapper/4	19:05:25	4
1209202	2	307	294,10	sleep7	0	-21	swapper/7	19:05:13	7
1210968	2	301	272,22	sleep1	0	-21	swapper/1	19:08:11	1
1210840	2	296	277,12	sleep2	0	-21	swapper/2	19:06:29	2
1210951	2	288	269,12	sleep3	0	-21	swapper/3	19:07:58	3
1211058	2	287	267,13	sleep6	0	-21	swapper/6	19:09:30	6
1210871	2	287	266,13	sleep0	0	-21	swapper/0	19:06:51	0
1210798	2	286	266,13	sleep5	0	-21	swapper/5	19:05:51	5
1211575	99	33	30,2	cyclictest	449069	-21	snmpd	20:49:12	7
1211575	99	33	0,30	cyclictest	0	-21	swapper/7	21:48:51	7
1211575	99	33	0,30	cyclictest	0	-21	swapper/7	20:40:27	7
1211572	99	33	30,2	cyclictest	449069	-21	snmpd	21:31:31	4
1211572	99	33	30,2	cyclictest	449069	-21	snmpd	00:04:57	4
1211572	99	33	29,3	cyclictest	449069	-21	snmpd	19:50:04	4
1211571	99	33	30,2	cyclictest	449069	-21	snmpd	22:21:45	3
1211571	99	33	30,2	cyclictest	449069	-21	snmpd	21:36:22	3
1211570	99	33	30,2	cyclictest	516654	-21	ntpd	00:29:44	2
1211570	99	33	30,2	cyclictest	449069	-21	snmpd	23:45:20	2
1211570	99	33	30,2	cyclictest	1339991	-21	cat	23:20:15	2
1211569	99	33	30,2	cyclictest	449069	-21	snmpd	23:51:23	1
1211569	99	33	30,2	cyclictest	449069	-21	snmpd	21:33:07	1
1211569	99	33	0,30	cyclictest	0	-21	swapper/1	22:15:33	1
1211569	99	33	0,30	cyclictest	0	-21	swapper/1	22:05:18	1
1211575	99	32	30,2	cyclictest	1286367	-21	cat	21:35:16	7
1211574	99	32	30,2	cyclictest	449069	-21	snmpd	22:56:08	6
1211574	99	32	30,2	cyclictest	449069	-21	snmpd	21:53:03	6
1211574	99	32	30,2	cyclictest	449069	-21	snmpd	20:13:14	6
1211573	99	32	31,1	cyclictest	1356724	-21	kworker/u16:0+flush-8:0	23:55:01	5
1211573	99	32	30,2	cyclictest	449069	-21	snmpd	23:34:08	5
1211573	99	32	30,2	cyclictest	449069	-21	snmpd	22:25:33	5
1211573	99	32	0,31	cyclictest	0	-21	swapper/5	22:47:49	5
1211573	99	32	0,31	cyclictest	0	-21	swapper/5	22:03:12	5
1211572	99	32	30,2	cyclictest	449069	-21	snmpd	21:28:38	4
1211572	99	32	30,1	cyclictest	449069	-21	snmpd	22:48:10	4
1211572	99	32	0,31	cyclictest	0	-21	swapper/4	19:35:29	4
1211572	99	32	0,31	cyclictest	0	-21	swapper/4	00:30:15	4
1211571	99	32	30,1	cyclictest	449069	-21	snmpd	19:46:28	3
1211571	99	32	0,31	cyclictest	0	-21	swapper/3	20:08:39	3
1211571	99	32	0,31	cyclictest	0	-21	swapper/3	19:20:43	3
1211571	99	32	0,31	cyclictest	0	-21	swapper/3	00:36:01	3
1211570	99	32	30,2	cyclictest	449069	-21	snmpd	21:47:05	2
1211570	99	32	30,2	cyclictest	449069	-21	snmpd	20:56:34	2
1211570	99	32	29,3	cyclictest	516654	-21	ntpd	23:54:44	2
1211570	99	32	29,2	cyclictest	449069	-21	snmpd	20:28:08	2
1211570	99	32	29,2	cyclictest	449069	-21	snmpd	00:20:48	2
1211570	99	32	0,31	cyclictest	0	-21	swapper/2	20:51:13	2
1211570	99	32	0,31	cyclictest	0	-21	swapper/2	20:32:03	2
1211570	99	32	0,31	cyclictest	0	-21	swapper/2	19:56:10	2
1211570	99	32	0,31	cyclictest	0	-21	swapper/2	19:37:35	2
1211570	99	32	0,31	cyclictest	0	-21	swapper/2	00:10:57	2
1211569	99	32	30,1	cyclictest	449069	-21	snmpd	23:17:40	1
1211569	99	32	29,2	cyclictest	449069	-21	snmpd	20:34:32	1
1211569	99	32	29,2	cyclictest	449069	-21	snmpd	19:41:46	1
1211569	99	32	29,2	cyclictest	1314413	-21	cat	22:30:13	1
1211569	99	32	0,31	cyclictest	0	-21	swapper/1	22:52:07	1
1211569	99	32	0,31	cyclictest	0	-21	swapper/1	19:33:55	1
1211569	99	32	0,30	cyclictest	0	-21	swapper/1	23:58:55	1
1211569	99	32	0,30	cyclictest	0	-21	swapper/1	23:38:02	1
1211569	99	32	0,30	cyclictest	0	-21	swapper/1	22:25:55	1
1211569	99	32	0,30	cyclictest	0	-21	swapper/1	00:13:46	1
1211568	99	32	30,2	cyclictest	449069	-21	snmpd	23:11:58	0
1211568	99	32	0,31	cyclictest	0	-21	swapper/0	22:10:14	0
1211575	99	31	30,1	cyclictest	449069	-21	snmpd	22:07:06	7
1211575	99	31	30,1	cyclictest	449069	-21	snmpd	00:39:53	7
1211575	99	31	30,1	cyclictest	449069	-21	snmpd	00:25:28	7
1211575	99	31	29,2	cyclictest	449069	-21	snmpd	23:35:38	7
1211575	99	31	29,2	cyclictest	449069	-21	snmpd	22:44:07	7
1211575	99	31	29,2	cyclictest	449069	-21	snmpd	19:12:28	7
1211575	99	31	29,2	cyclictest	449069	-21	snmpd	00:34:49	7
1211575	99	31	29,2	cyclictest	1263259	-21	cat	20:50:14	7
1211575	99	31	29,1	cyclictest	449069	-21	snmpd	20:38:25	7
1211575	99	31	1,30	cyclictest	0	-21	swapper/7	23:49:36	7
1211575	99	31	0,31	cyclictest	0	-21	swapper/7	21:13:11	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	23:57:46	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	23:00:56	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	22:55:01	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	22:21:04	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	21:16:04	7
1211575	99	31	0,30	cyclictest	0	-21	swapper/7	19:31:56	7
1211575	99	31	0,1	cyclictest	0	-21	swapper/7	23:25:35	7
1211575	99	31	0,1	cyclictest	0	-21	swapper/7	19:42:10	7
1211575	99	31	0,1	cyclictest	0	-21	swapper/7	00:21:19	7
1211574	99	31	30,1	cyclictest	449069	-21	snmpd	19:44:23	6
1211574	99	31	29,2	cyclictest	449069	-21	snmpd	23:18:42	6
1211574	99	31	29,2	cyclictest	449069	-21	snmpd	22:16:04	6
1211574	99	31	29,2	cyclictest	449069	-21	snmpd	20:09:39	6
1211574	99	31	29,2	cyclictest	1281337	-21	cat	21:25:13	6
1211574	99	31	0,31	cyclictest	0	-21	swapper/6	22:21:27	6
1211574	99	31	0,31	cyclictest	0	-21	swapper/6	00:08:10	6
1211574	99	31	0,30	cyclictest	0	-21	swapper/6	21:05:31	6
1211574	99	31	0,30	cyclictest	0	-21	swapper/6	20:59:22	6
1211574	99	31	0,30	cyclictest	0	-21	swapper/6	19:25:06	6
1211574	99	31	0,1	cyclictest	0	-21	swapper/6	23:00:23	6
1211574	99	31	0,1	cyclictest	0	-21	swapper/6	22:14:51	6
1211574	99	31	0,1	cyclictest	0	-21	swapper/6	19:54:29	6
1211573	99	31	30,1	cyclictest	679	-21	in:imklog	20:49:09	5
1211573	99	31	30,1	cyclictest	449069	-21	snmpd	22:54:05	5
1211573	99	31	30,1	cyclictest	449069	-21	snmpd	22:44:01	5
1211573	99	31	30,1	cyclictest	449069	-21	snmpd	20:54:16	5
1211573	99	31	30,1	cyclictest	449069	-21	snmpd	20:05:22	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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