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 Mon Nov 03, 2025 00:46:27)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3297040	2	300	282,11	sleep4	0	-21	swapper/4	19:05:39	4
3297108	2	296	278,11	sleep2	0	-21	swapper/2	19:06:33	2
3295407	2	291	259,25	sleep7	0	-21	swapper/7	19:05:02	7
3295418	2	290	257,25	sleep0	0	-21	swapper/0	19:05:12	0
3297237	2	287	266,13	sleep3	0	-21	swapper/3	19:08:20	3
3297317	2	286	265,13	sleep5	0	-21	swapper/5	19:09:26	5
3297280	2	285	265,12	sleep6	0	-21	swapper/6	19:08:56	6
3297351	2	284	265,12	sleep1	0	-21	swapper/1	19:09:54	1
3297834	99	41	39,2	cyclictest	3420505	-21	kworker/u16:2+events_unbound	00:10:01	3
3297834	99	36	35,1	cyclictest	3331841	-21	kworker/u16:2+flush-8:0	21:05:29	3
3297833	99	36	30,6	cyclictest	833	-21	snmpd	21:39:06	2
3297834	99	35	32,2	cyclictest	3317497	-21	kworker/u16:1+flush-8:0	20:20:00	3
3297838	99	34	34,0	cyclictest	3232443	-21	kworker/7:0-events	22:29:58	7
3297833	99	34	31,2	cyclictest	833	-21	snmpd	21:50:21	2
3297832	99	34	30,3	cyclictest	833	-21	snmpd	19:29:33	1
3297838	99	33	33,0	cyclictest	0	-21	swapper/7	23:41:47	7
3297838	99	33	33,0	cyclictest	0	-21	swapper/7	21:32:22	7
3297838	99	33	33,0	cyclictest	0	-21	swapper/7	00:31:55	7
3297838	99	33	32,1	cyclictest	0	-21	swapper/7	21:44:02	7
3297838	99	33	30,2	cyclictest	833	-21	snmpd	21:19:24	7
3297837	99	33	30,2	cyclictest	833	-21	snmpd	22:09:36	6
3297837	99	33	30,2	cyclictest	833	-21	snmpd	21:03:51	6
3297837	99	33	30,2	cyclictest	833	-21	snmpd	21:03:50	6
3297837	99	33	0,30	cyclictest	0	-21	swapper/6	20:01:14	6
3297837	99	33	0,30	cyclictest	0	-21	swapper/6	00:12:04	6
3297835	99	33	30,2	cyclictest	833	-21	snmpd	21:22:50	4
3297835	99	33	30,2	cyclictest	833	-21	snmpd	19:47:27	4
3297835	99	33	30,2	cyclictest	833	-21	snmpd	00:17:43	4
3297833	99	33	30,2	cyclictest	833	-21	snmpd	23:21:38	2
3297833	99	33	30,2	cyclictest	833	-21	snmpd	20:24:38	2
3297833	99	33	30,2	cyclictest	833	-21	snmpd	00:28:19	2
3297833	99	33	0,30	cyclictest	0	-21	swapper/2	19:12:00	2
3297833	99	33	0,30	cyclictest	0	-21	swapper/2	19:11:59	2
3297832	99	33	30,2	cyclictest	833	-21	snmpd	20:19:11	1
3297831	99	33	30,2	cyclictest	833	-21	snmpd	23:29:41	0
3297831	99	33	30,2	cyclictest	833	-21	snmpd	22:10:06	0
3297831	99	33	30,2	cyclictest	833	-21	snmpd	21:10:05	0
3297831	99	33	30,2	cyclictest	833	-21	snmpd	00:17:37	0
3297831	99	33	30,2	cyclictest	3354239	-21	cat	21:05:17	0
3297838	99	32	32,0	cyclictest	0	-21	swapper/7	21:54:44	7
3297838	99	32	32,0	cyclictest	0	-21	swapper/7	20:53:55	7
3297838	99	32	30,2	cyclictest	833	-21	snmpd	23:03:05	7
3297838	99	32	30,1	cyclictest	833	-21	snmpd	22:45:34	7
3297838	99	32	29,2	cyclictest	833	-21	snmpd	00:26:58	7
3297837	99	32	30,2	cyclictest	833	-21	snmpd	23:42:39	6
3297837	99	32	30,2	cyclictest	3308763	-21	cat	19:30:15	6
3297837	99	32	29,2	cyclictest	833	-21	snmpd	21:48:04	6
3297837	99	32	28,3	cyclictest	3339850	-21	cat	20:35:16	6
3297837	99	32	0,31	cyclictest	0	-21	swapper/6	21:12:32	6
3297837	99	32	0,29	cyclictest	0	-21	swapper/6	19:46:33	6
3297836	99	32	30,2	cyclictest	833	-21	snmpd	23:37:57	5
3297836	99	32	30,2	cyclictest	833	-21	snmpd	00:31:34	5
3297836	99	32	0,30	cyclictest	0	-21	swapper/5	23:47:12	5
3297835	99	32	30,2	cyclictest	833	-21	snmpd	22:12:24	4
3297835	99	32	30,2	cyclictest	833	-21	snmpd	20:48:20	4
3297835	99	32	30,2	cyclictest	833	-21	snmpd	20:09:16	4
3297835	99	32	30,2	cyclictest	833	-21	snmpd	19:13:24	4
3297835	99	32	30,2	cyclictest	833	-21	snmpd	19:13:23	4
3297835	99	32	30,1	cyclictest	833	-21	snmpd	23:25:14	4
3297835	99	32	30,1	cyclictest	833	-21	snmpd	21:56:12	4
3297835	99	32	0,32	cyclictest	0	-21	swapper/4	23:16:32	4
3297835	99	32	0,31	cyclictest	0	-21	swapper/4	20:58:33	4
3297835	99	32	0,31	cyclictest	0	-21	swapper/4	20:58:32	4
3297835	99	32	0,30	cyclictest	0	-21	swapper/4	00:24:31	4
3297834	99	32	30,2	cyclictest	833	-21	snmpd	22:21:52	3
3297834	99	32	30,2	cyclictest	3421676	-21	cat	23:25:17	3
3297834	99	32	0,31	cyclictest	0	-21	swapper/3	23:37:03	3
3297833	99	32	30,1	cyclictest	833	-21	snmpd	22:29:07	2
3297833	99	32	29,3	cyclictest	833	-21	snmpd	23:39:57	2
3297833	99	32	29,2	cyclictest	833	-21	snmpd	20:27:19	2
3297833	99	32	26,6	cyclictest	833	-21	snmpd	22:50:46	2
3297833	99	32	26,6	cyclictest	833	-21	snmpd	22:50:46	2
3297833	99	32	0,31	cyclictest	0	-21	swapper/2	22:00:15	2
3297833	99	32	0,31	cyclictest	0	-21	swapper/2	19:18:08	2
3297832	99	32	30,1	cyclictest	833	-21	snmpd	23:41:45	1
3297832	99	32	28,3	cyclictest	833	-21	snmpd	23:00:41	1
3297831	99	32	31,1	cyclictest	833	-21	snmpd	20:12:19	0
3297831	99	32	30,2	cyclictest	833	-21	snmpd	19:25:22	0
3297831	99	32	30,1	cyclictest	833	-21	snmpd	21:20:20	0
3297831	99	32	0,31	cyclictest	3391552	-21	sshd	22:23:52	0
3297838	99	31	30,1	cyclictest	833	-21	snmpd	21:27:36	7
3297838	99	31	30,1	cyclictest	833	-21	snmpd	20:56:09	7
3297838	99	31	30,1	cyclictest	833	-21	snmpd	20:56:08	7
3297838	99	31	30,1	cyclictest	833	-21	snmpd	00:22:58	7
3297838	99	31	29,2	cyclictest	833	-21	snmpd	19:41:22	7
3297838	99	31	29,2	cyclictest	833	-21	snmpd	19:19:06	7
3297838	99	31	10,0	cyclictest	0	-21	swapper/7	19:10:17	7
3297838	99	31	10,0	cyclictest	0	-21	swapper/7	19:10:17	7
3297838	99	31	0,31	cyclictest	0	-21	swapper/7	22:00:45	7
3297838	99	31	0,31	cyclictest	0	-21	swapper/7	20:18:50	7
3297838	99	31	0,1	cyclictest	0	-21	swapper/7	22:55:18	7
3297838	99	31	0,1	cyclictest	0	-21	swapper/7	22:17:29	7
3297837	99	31	30,1	cyclictest	833	-21	snmpd	23:31:02	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	23:24:35	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	23:17:47	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	23:11:38	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	20:09:49	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	19:18:41	6
3297837	99	31	30,1	cyclictest	833	-21	snmpd	00:35:19	6
3297837	99	31	30,1	cyclictest	0	-21	swapper/6	23:56:09	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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