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 Dec 11, 2025 00:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2051456	2	329	321,5	sleep5	0	-21	swapper/5	19:05:31	5
2051456	2	329	321,5	sleep5	0	-21	swapper/5	19:05:30	5
2051145	2	311	280,22	sleep2	0	-21	swapper/2	19:05:28	2
2051145	2	311	280,22	sleep2	0	-21	swapper/2	19:05:27	2
2050074	2	300	281,12	sleep0	0	-21	swapper/0	19:05:09	0
2050074	2	300	281,12	sleep0	0	-21	swapper/0	19:05:09	0
2051726	2	298	280,10	sleep4	0	-21	swapper/4	19:06:02	4
2051726	2	298	280,10	sleep4	0	-21	swapper/4	19:06:01	4
2052006	2	297	261,12	sleep7	0	-21	swapper/7	19:09:59	7
2052006	2	297	261,12	sleep7	0	-21	swapper/7	19:09:58	7
2051954	2	293	277,10	sleep3	0	-21	swapper/3	19:09:15	3
2051954	2	293	277,10	sleep3	0	-21	swapper/3	19:09:14	3
2051977	2	286	266,12	sleep6	0	-21	swapper/6	19:09:34	6
2051977	2	286	266,12	sleep6	0	-21	swapper/6	19:09:33	6
2051810	2	282	262,12	sleep1	0	-21	swapper/1	19:07:12	1
2051810	2	282	262,12	sleep1	0	-21	swapper/1	19:07:11	1
2052484	99	36	34,2	cyclictest	2157972	-21	kworker/u16:3+flush-8:0	23:00:23	5
2052486	99	34	34,0	cyclictest	0	-21	swapper/7	00:01:36	7
2052484	99	34	33,1	cyclictest	2142237	-21	kworker/u16:0+flush-8:0	22:25:25	5
2052483	99	34	30,3	cyclictest	833	-21	snmpd	23:49:49	4
2052482	99	34	30,3	cyclictest	833	-21	snmpd	21:16:44	3
2052480	99	34	0,33	cyclictest	0	-21	swapper/1	20:15:18	1
2052486	99	33	33,0	cyclictest	0	-21	swapper/7	20:09:32	7
2052485	99	33	30,2	cyclictest	833	-21	snmpd	22:54:49	6
2052485	99	33	30,2	cyclictest	833	-21	snmpd	20:19:06	6
2052485	99	33	29,3	cyclictest	833	-21	snmpd	00:04:51	6
2052484	99	33	30,2	cyclictest	2088443	-21	kworker/u16:3+events_unbound	20:50:23	5
2052482	99	33	30,2	cyclictest	833	-21	snmpd	20:13:35	3
2052482	99	33	0,32	cyclictest	0	-21	swapper/3	21:01:42	3
2052482	99	33	0,32	cyclictest	0	-21	swapper/3	21:01:42	3
2052480	99	33	30,2	cyclictest	833	-21	snmpd	23:35:36	1
2052480	99	33	30,2	cyclictest	833	-21	snmpd	20:37:39	1
2052480	99	33	28,4	cyclictest	833	-21	snmpd	21:18:13	1
2052480	99	33	0,30	cyclictest	0	-21	swapper/1	23:21:59	1
2052480	99	33	0,30	cyclictest	0	-21	swapper/1	22:48:59	1
2052480	99	33	0,30	cyclictest	0	-21	swapper/1	22:26:30	1
2052480	99	33	0,30	cyclictest	0	-21	swapper/1	21:10:15	1
2052486	99	32	32,0	cyclictest	2128437	-21	kworker/7:1-mm_percpu_wq	22:27:26	7
2052486	99	32	31,1	cyclictest	16	-21	pr/tty0	19:59:15	7
2052486	99	32	30,2	cyclictest	833	-21	snmpd	19:11:31	7
2052486	99	32	30,2	cyclictest	833	-21	snmpd	19:11:31	7
2052485	99	32	30,2	cyclictest	833	-21	snmpd	21:21:29	6
2052485	99	32	30,1	cyclictest	833	-21	snmpd	23:45:09	6
2052485	99	32	30,1	cyclictest	833	-21	snmpd	23:20:12	6
2052485	99	32	30,1	cyclictest	833	-21	snmpd	20:51:30	6
2052485	99	32	29,2	cyclictest	833	-21	snmpd	22:21:45	6
2052485	99	32	29,2	cyclictest	833	-21	snmpd	22:11:19	6
2052485	99	32	29,2	cyclictest	833	-21	snmpd	21:34:47	6
2052485	99	32	0,31	cyclictest	0	-21	swapper/6	22:36:06	6
2052485	99	32	0,31	cyclictest	0	-21	swapper/6	00:27:13	6
2052484	99	32	30,2	cyclictest	833	-21	snmpd	23:19:09	5
2052484	99	32	30,2	cyclictest	833	-21	snmpd	21:01:07	5
2052484	99	32	30,2	cyclictest	833	-21	snmpd	21:01:06	5
2052484	99	32	30,2	cyclictest	833	-21	snmpd	20:46:12	5
2052484	99	32	30,2	cyclictest	833	-21	snmpd	20:27:57	5
2052484	99	32	30,2	cyclictest	833	-21	snmpd	00:35:25	5
2052484	99	32	30,2	cyclictest	2108147	-21	cat	21:05:13	5
2052483	99	32	30,2	cyclictest	833	-21	snmpd	22:19:51	4
2052483	99	32	30,1	cyclictest	833	-21	snmpd	22:27:15	4
2052483	99	32	29,3	cyclictest	2110476	-21	cat	21:10:15	4
2052483	99	32	29,2	cyclictest	2176493	-21	cat	23:30:14	4
2052483	99	32	29,2	cyclictest	2167126	-21	cat	23:10:15	4
2052482	99	32	30,1	cyclictest	833	-21	snmpd	21:38:34	3
2052482	99	32	30,1	cyclictest	833	-21	snmpd	20:24:48	3
2052482	99	32	30,1	cyclictest	833	-21	snmpd	00:38:17	3
2052482	99	32	0,31	cyclictest	0	-21	swapper/3	21:50:17	3
2052482	99	32	0,31	cyclictest	0	-21	swapper/3	21:45:12	3
2052482	99	32	0,31	cyclictest	0	-21	swapper/3	20:40:14	3
2052481	99	32	30,2	cyclictest	833	-21	snmpd	23:40:34	2
2052481	99	32	30,2	cyclictest	2105813	-21	cat	21:00:16	2
2052481	99	32	30,2	cyclictest	2105813	-21	cat	21:00:15	2
2052481	99	32	0,1	cyclictest	0	-21	swapper/2	22:28:52	2
2052480	99	32	30,1	cyclictest	833	-21	snmpd	19:14:16	1
2052480	99	32	30,1	cyclictest	833	-21	snmpd	19:14:16	1
2052480	99	32	30,1	cyclictest	833	-21	snmpd	00:25:46	1
2052480	99	32	0,30	cyclictest	0	-21	swapper/1	21:51:53	1
2052479	99	32	30,1	cyclictest	833	-21	snmpd	22:13:33	0
2052479	99	32	30,1	cyclictest	833	-21	snmpd	21:47:36	0
2052479	99	32	30,1	cyclictest	833	-21	snmpd	19:48:05	0
2052479	99	32	30,1	cyclictest	833	-21	snmpd	19:36:43	0
2052479	99	32	30,1	cyclictest	833	-21	snmpd	19:17:30	0
2052479	99	32	29,2	cyclictest	833	-21	snmpd	22:42:16	0
2052479	99	32	0,31	cyclictest	0	-21	swapper/0	22:25:49	0
2052479	99	32	0,31	cyclictest	0	-21	swapper/0	21:15:15	0
2052486	99	31	31,0	cyclictest	0	-21	swapper/7	22:20:08	7
2052486	99	31	30,1	cyclictest	833	-21	snmpd	23:32:32	7
2052486	99	31	30,1	cyclictest	833	-21	snmpd	23:17:32	7
2052486	99	31	30,1	cyclictest	2118949	-21	kworker/7:2-events	21:47:15	7
2052486	99	31	0,30	cyclictest	0	-21	swapper/7	23:36:03	7
2052486	99	31	0,30	cyclictest	0	-21	swapper/7	23:23:14	7
2052486	99	31	0,30	cyclictest	0	-21	swapper/7	21:22:38	7
2052486	99	31	0,30	cyclictest	0	-21	swapper/7	20:01:50	7
2052486	99	31	0,30	cyclictest	0	-21	swapper/7	19:38:37	7
2052486	99	31	0,1	cyclictest	0	-21	swapper/7	23:27:12	7
2052486	99	31	0,1	cyclictest	0	-21	swapper/7	23:11:18	7
2052486	99	31	0,1	cyclictest	0	-21	swapper/7	00:09:46	7
2052486	99	31	0,0	cyclictest	0	-21	swapper/7	21:53:59	7
2052485	99	31	30,1	cyclictest	833	-21	snmpd	23:16:02	6
2052485	99	31	30,1	cyclictest	833	-21	snmpd	22:27:07	6
2052485	99	31	30,1	cyclictest	833	-21	snmpd	21:51:21	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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