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 Sun Mar 08, 2026 00:46:23)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3573763	2	315	284,23	sleep6	0	-21	swapper/6	19:05:34	6
3574295	2	296	269,20	sleep1	0	-21	swapper/1	19:09:05	1
3574229	2	294	252,12	sleep2	0	-21	swapper/2	19:08:10	2
3574137	2	290	270,13	sleep5	0	-21	swapper/5	19:06:52	5
3574026	2	290	271,12	sleep7	0	-21	swapper/7	19:05:34	7
3574231	2	289	253,28	sleep4	0	-21	swapper/4	19:08:12	4
3574066	2	289	270,12	sleep3	0	-21	swapper/3	19:05:55	3
3574197	2	285	265,13	sleep0	0	-21	swapper/0	19:07:45	0
3574833	99	38	36,2	cyclictest	3582976	-21	kworker/u16:4+events_unbound	19:45:01	0
3574839	99	34	30,3	cyclictest	449069	-21	snmpd	22:40:33	6
3574834	99	34	31,2	cyclictest	3707074	-21	kworker/u16:3+flush-8:0	00:10:00	1
3574840	99	33	30,2	cyclictest	449069	-21	snmpd	23:41:05	7
3574840	99	33	0,30	cyclictest	0	-21	swapper/7	20:54:42	7
3574839	99	33	30,2	cyclictest	449069	-21	snmpd	23:00:54	6
3574839	99	33	30,2	cyclictest	3607064	-21	ipmitool	20:10:19	6
3574839	99	33	28,4	cyclictest	449069	-21	snmpd	23:06:18	6
3574839	99	33	0,32	cyclictest	0	-21	swapper/6	21:12:09	6
3574839	99	33	0,30	cyclictest	0	-21	swapper/6	20:50:15	6
3574838	99	33	30,2	cyclictest	449069	-21	snmpd	21:50:10	5
3574838	99	33	0,30	cyclictest	0	-21	swapper/5	23:45:13	5
3574837	99	33	30,2	cyclictest	3720262	-21	cat	23:55:15	4
3574837	99	33	30,2	cyclictest	3649585	-21	cat	21:35:15	4
3574837	99	33	30,2	cyclictest	3617016	-21	cat	20:30:16	4
3574837	99	33	30,2	cyclictest	3617016	-21	cat	20:30:15	4
3574836	99	33	30,2	cyclictest	449069	-21	snmpd	20:27:38	3
3574836	99	33	30,2	cyclictest	3672422	-21	cat	22:20:14	3
3574836	99	33	30,2	cyclictest	3599523	-21	cat	19:55:15	3
3574836	99	33	0,32	cyclictest	3703968	-21	chrt	23:22:04	3
3574836	99	33	0,30	cyclictest	0	-21	swapper/3	23:17:04	3
3574836	99	33	0,30	cyclictest	0	-21	swapper/3	20:43:35	3
3574834	99	33	30,2	cyclictest	449069	-21	snmpd	20:16:37	1
3574834	99	33	0,31	cyclictest	0	-21	swapper/1	20:11:32	1
3574840	99	32	30,2	cyclictest	449069	-21	snmpd	23:19:49	7
3574840	99	32	30,2	cyclictest	449069	-21	snmpd	19:14:21	7
3574840	99	32	29,2	cyclictest	3639542	-21	cat	21:15:14	7
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	23:33:40	6
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	23:12:37	6
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	22:54:55	6
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	22:36:19	6
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	00:32:52	6
3574839	99	32	30,1	cyclictest	449069	-21	snmpd	00:00:20	6
3574839	99	32	27,4	cyclictest	449069	-21	snmpd	19:10:26	6
3574839	99	32	0,31	cyclictest	0	-21	swapper/6	23:23:16	6
3574839	99	32	0,31	cyclictest	0	-21	swapper/6	20:32:51	6
3574839	99	32	0,31	cyclictest	0	-21	swapper/6	20:32:50	6
3574839	99	32	0,30	cyclictest	0	-21	swapper/6	20:55:12	6
3574838	99	32	30,2	cyclictest	3659835	-21	cat	21:55:14	5
3574838	99	32	30,1	cyclictest	449069	-21	snmpd	21:06:48	5
3574838	99	32	29,2	cyclictest	449069	-21	snmpd	20:22:07	5
3574838	99	32	0,30	cyclictest	0	-21	swapper/5	21:38:49	5
3574837	99	32	30,2	cyclictest	449069	-21	snmpd	19:10:45	4
3574837	99	32	29,2	cyclictest	449069	-21	snmpd	23:50:14	4
3574837	99	32	29,2	cyclictest	449069	-21	snmpd	21:34:58	4
3574837	99	32	29,2	cyclictest	449069	-21	snmpd	19:24:10	4
3574837	99	32	0,31	cyclictest	0	-21	swapper/4	23:38:32	4
3574837	99	32	0,30	cyclictest	0	-21	swapper/4	23:14:14	4
3574837	99	32	0,30	cyclictest	0	-21	swapper/4	20:00:37	4
3574836	99	32	30,1	cyclictest	449069	-21	snmpd	21:05:15	3
3574836	99	32	30,1	cyclictest	449069	-21	snmpd	00:09:09	3
3574836	99	32	29,2	cyclictest	449069	-21	snmpd	20:32:03	3
3574836	99	32	29,2	cyclictest	449069	-21	snmpd	20:32:02	3
3574836	99	32	29,2	cyclictest	3658655	-21	kworker/u16:4+flush-8:0	22:10:25	3
3574835	99	32	30,2	cyclictest	449069	-21	snmpd	23:57:44	2
3574835	99	32	30,2	cyclictest	449069	-21	snmpd	22:41:54	2
3574835	99	32	30,2	cyclictest	449069	-21	snmpd	21:52:19	2
3574835	99	32	30,2	cyclictest	449069	-21	snmpd	19:17:07	2
3574834	99	32	30,1	cyclictest	449069	-21	snmpd	20:45:11	1
3574834	99	32	0,30	cyclictest	0	-21	swapper/1	21:44:35	1
3574834	99	32	0,30	cyclictest	0	-21	swapper/1	20:56:39	1
3574833	99	32	30,2	cyclictest	449069	-21	snmpd	23:49:59	0
3574833	99	32	30,2	cyclictest	449069	-21	snmpd	23:02:27	0
3574833	99	32	0,31	cyclictest	0	-21	swapper/0	00:30:46	0
3574840	99	31	30,1	cyclictest	449069	-21	snmpd	23:12:10	7
3574840	99	31	30,1	cyclictest	449069	-21	snmpd	20:21:10	7
3574840	99	31	30,1	cyclictest	449069	-21	snmpd	19:57:34	7
3574840	99	31	30,1	cyclictest	449069	-21	snmpd	19:42:06	7
3574840	99	31	29,2	cyclictest	3586713	-21	cat	19:30:16	7
3574840	99	31	0,30	cyclictest	0	-21	swapper/7	22:39:36	7
3574840	99	31	0,30	cyclictest	0	-21	swapper/7	21:41:05	7
3574839	99	31	29,1	cyclictest	449069	-21	snmpd	21:06:21	6
3574839	99	31	29,1	cyclictest	449069	-21	snmpd	19:51:45	6
3574839	99	31	28,2	cyclictest	449069	-21	snmpd	22:56:15	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	22:22:02	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	22:02:57	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	21:43:43	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	20:45:20	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	20:01:10	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	19:28:12	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	19:16:57	6
3574839	99	31	0,30	cyclictest	0	-21	swapper/6	00:11:27	6
3574839	99	31	0,29	cyclictest	0	-21	swapper/6	23:25:19	6
3574839	99	31	0,1	cyclictest	0	-21	swapper/6	20:05:26	6
3574838	99	31	30,1	cyclictest	449069	-21	snmpd	21:13:34	5
3574838	99	31	30,1	cyclictest	449069	-21	snmpd	20:12:04	5
3574838	99	31	30,1	cyclictest	449069	-21	snmpd	00:25:06	5
3574838	99	31	29,2	cyclictest	449069	-21	snmpd	22:12:38	5
3574838	99	31	29,2	cyclictest	449069	-21	snmpd	20:27:48	5
3574838	99	31	29,2	cyclictest	449069	-21	snmpd	19:26:10	5
3574838	99	31	29,1	cyclictest	449069	-21	snmpd	23:32:34	5
3574838	99	31	29,1	cyclictest	449069	-21	snmpd	00:30:58	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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