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 Aug 30, 2025 00:46:22)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1314930	2	298	277,13	sleep2	0	-21	swapper/2	19:09:57	2
1314559	2	296	268,21	sleep0	0	-21	swapper/0	19:05:36	0
1314609	2	291	255,27	sleep4	0	-21	swapper/4	19:06:14	4
1314554	2	289	268,12	sleep6	0	-21	swapper/6	19:05:34	6
1314849	2	285	265,12	sleep5	0	-21	swapper/5	19:09:03	5
1314805	2	285	265,13	sleep1	0	-21	swapper/1	19:08:28	1
1314684	2	284	265,12	sleep7	0	-21	swapper/7	19:07:04	7
1314620	2	281	260,13	sleep3	0	-21	swapper/3	19:06:20	3
1315668	99	42	39,2	cyclictest	1314657	-21	kworker/u16:0+flush-8:0	19:10:00	4
1315664	99	35	0,32	cyclictest	0	-21	swapper/0	22:22:27	0
1315671	99	33	30,2	cyclictest	833	-21	snmpd	20:54:33	7
1315670	99	33	30,2	cyclictest	833	-21	snmpd	23:47:59	6
1315670	99	33	30,2	cyclictest	2311553	-21	ntpd	00:17:36	6
1315669	99	33	30,2	cyclictest	833	-21	snmpd	20:52:03	5
1315669	99	33	0,30	cyclictest	0	-21	swapper/5	21:07:30	5
1315668	99	33	30,2	cyclictest	833	-21	snmpd	22:46:21	4
1315668	99	33	30,2	cyclictest	833	-21	snmpd	22:03:41	4
1315668	99	33	30,2	cyclictest	833	-21	snmpd	21:58:38	4
1315668	99	33	30,2	cyclictest	833	-21	snmpd	19:40:10	4
1315668	99	33	30,2	cyclictest	1387974	-21	cat	21:40:14	4
1315665	99	33	30,2	cyclictest	833	-21	snmpd	22:24:54	1
1315665	99	33	30,2	cyclictest	1345298	-21	cat	20:10:15	1
1315665	99	33	29,3	cyclictest	1459547	-21	cat	00:10:18	1
1315665	99	33	0,31	cyclictest	0	-21	swapper/1	21:12:09	1
1315665	99	33	0,30	cyclictest	0	-21	swapper/1	23:42:53	1
1315665	99	33	0,30	cyclictest	0	-21	swapper/1	19:50:15	1
1315664	99	33	30,2	cyclictest	0	-21	swapper/0	20:38:39	0
1315664	99	33	0,30	cyclictest	0	-21	swapper/0	22:08:38	0
1315664	99	33	0,30	cyclictest	0	-21	swapper/0	19:52:17	0
1315671	99	32	30,2	cyclictest	833	-21	snmpd	21:05:46	7
1315671	99	32	30,2	cyclictest	833	-21	snmpd	19:44:43	7
1315671	99	32	30,1	cyclictest	833	-21	snmpd	19:20:16	7
1315671	99	32	29,3	cyclictest	833	-21	snmpd	23:19:10	7
1315671	99	32	29,2	cyclictest	833	-21	snmpd	22:33:33	7
1315671	99	32	29,2	cyclictest	833	-21	snmpd	21:46:43	7
1315671	99	32	29,2	cyclictest	833	-21	snmpd	21:13:30	7
1315671	99	32	29,2	cyclictest	833	-21	snmpd	19:25:17	7
1315671	99	32	0,31	cyclictest	0	-21	swapper/7	23:05:15	7
1315670	99	32	30,1	cyclictest	833	-21	snmpd	22:22:30	6
1315670	99	32	29,3	cyclictest	833	-21	snmpd	23:07:37	6
1315670	99	32	29,2	cyclictest	833	-21	snmpd	23:03:49	6
1315670	99	32	0,31	cyclictest	0	-21	swapper/6	23:35:05	6
1315670	99	32	0,31	cyclictest	0	-21	swapper/6	21:50:04	6
1315669	99	32	30,1	cyclictest	833	-21	snmpd	22:01:59	5
1315669	99	32	30,1	cyclictest	833	-21	snmpd	00:01:12	5
1315669	99	32	0,31	cyclictest	0	-21	swapper/5	23:45:15	5
1315669	99	32	0,31	cyclictest	0	-21	swapper/5	19:31:38	5
1315669	99	32	0,31	cyclictest	0	-21	swapper/5	19:31:37	5
1315669	99	32	0,30	cyclictest	0	-21	swapper/5	22:55:43	5
1315669	99	32	0,30	cyclictest	0	-21	swapper/5	20:45:25	5
1315668	99	32	29,2	cyclictest	833	-21	snmpd	23:55:05	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	23:52:53	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	22:26:21	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	22:09:11	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	20:37:12	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	20:20:15	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	20:05:59	4
1315668	99	32	29,2	cyclictest	833	-21	snmpd	19:50:25	4
1315668	99	32	0,31	cyclictest	0	-21	swapper/4	23:25:14	4
1315668	99	32	0,31	cyclictest	0	-21	swapper/4	19:56:23	4
1315668	99	32	0,31	cyclictest	0	-21	swapper/4	19:30:14	4
1315668	99	32	0,31	cyclictest	0	-21	swapper/4	19:30:14	4
1315668	99	32	0,30	cyclictest	0	-21	swapper/4	22:10:21	4
1315668	99	32	0,30	cyclictest	0	-21	swapper/4	20:34:17	4
1315668	99	32	0,30	cyclictest	0	-21	swapper/4	19:49:13	4
1315668	99	32	0,30	cyclictest	0	-21	swapper/4	00:02:39	4
1315667	99	32	30,2	cyclictest	833	-21	snmpd	23:48:23	3
1315666	99	32	30,2	cyclictest	833	-21	snmpd	23:32:35	2
1315666	99	32	30,2	cyclictest	833	-21	snmpd	23:06:16	2
1315666	99	32	30,2	cyclictest	833	-21	snmpd	19:53:36	2
1315666	99	32	30,2	cyclictest	833	-21	snmpd	00:08:00	2
1315665	99	32	30,2	cyclictest	833	-21	snmpd	21:08:16	1
1315665	99	32	30,2	cyclictest	833	-21	snmpd	19:12:10	1
1315665	99	32	30,1	cyclictest	833	-21	snmpd	23:30:56	1
1315665	99	32	30,1	cyclictest	1363273	-21	kworker/1:0+events	22:15:02	1
1315665	99	32	29,2	cyclictest	1464274	-21	cat	00:20:16	1
1315664	99	32	30,2	cyclictest	833	-21	snmpd	19:29:10	0
1315664	99	32	29,2	cyclictest	833	-21	snmpd	20:43:54	0
1315664	99	32	29,2	cyclictest	833	-21	snmpd	00:10:48	0
1315664	99	32	28,3	cyclictest	0	-21	swapper/0	20:19:44	0
1315664	99	32	0,31	cyclictest	0	-21	swapper/0	19:19:19	0
1315664	99	32	0,30	cyclictest	0	-21	swapper/0	20:55:45	0
1315671	99	31	30,1	cyclictest	1420243	-21	kworker/u16:2+flush-8:0	23:00:00	7
1315671	99	31	29,2	cyclictest	833	-21	snmpd	22:09:41	7
1315671	99	31	0,1	cyclictest	0	-21	swapper/7	21:30:58	7
1315670	99	31	0,31	cyclictest	0	-21	swapper/6	22:53:35	6
1315670	99	31	0,30	cyclictest	0	-21	swapper/6	22:13:47	6
1315670	99	31	0,30	cyclictest	0	-21	swapper/6	00:13:00	6
1315670	99	31	0,1	cyclictest	0	-21	swapper/6	22:36:21	6
1315670	99	31	0,1	cyclictest	0	-21	swapper/6	20:42:45	6
1315670	99	31	0,1	cyclictest	0	-21	swapper/6	00:08:57	6
1315669	99	31	30,1	cyclictest	833	-21	snmpd	22:29:10	5
1315669	99	31	30,1	cyclictest	833	-21	snmpd	21:47:25	5
1315669	99	31	30,1	cyclictest	833	-21	snmpd	00:37:04	5
1315669	99	31	29,2	cyclictest	1430903	-21	cat	23:10:16	5
1315669	99	31	29,1	cyclictest	833	-21	snmpd	21:42:47	5
1315669	99	31	28,2	cyclictest	1376167	-21	cat	21:15:17	5
1315669	99	31	0,31	cyclictest	0	-21	swapper/5	20:43:09	5
1315669	99	31	0,30	cyclictest	0	-21	swapper/5	23:37:23	5
1315669	99	31	0,30	cyclictest	0	-21	swapper/5	19:45:52	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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