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 Fri Nov 21, 2025 00:46:20)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4081828	2	354	316,34	sleep1	0	-21	swapper/1	19:05:25	1
4081155	2	347	339,5	sleep5	0	-21	swapper/5	19:05:14	5
4083028	2	305	296,5	sleep2	0	-21	swapper/2	19:09:45	2
4082671	2	300	262,12	sleep0	0	-21	swapper/0	19:05:41	0
4082899	2	293	256,28	sleep4	0	-21	swapper/4	19:08:17	4
4082668	2	292	255,29	sleep6	0	-21	swapper/6	19:05:39	6
4082898	2	291	257,26	sleep3	0	-21	swapper/3	19:08:17	3
4083000	2	286	265,13	sleep7	0	-21	swapper/7	19:09:25	7
4083525	99	48	45,2	cyclictest	8312	-21	kworker/u16:3+flush-8:0	23:20:25	1
4083524	99	38	37,1	cyclictest	4119190	-21	kworker/u16:2+flush-8:0	20:25:13	0
4083531	99	36	29,2	cyclictest	833	-21	snmpd	23:37:04	7
4083531	99	35	29,2	cyclictest	833	-21	snmpd	00:18:23	7
4083528	99	35	33,2	cyclictest	37204	-21	kworker/u16:0+flush-8:0	00:20:00	4
4083524	99	35	0,32	cyclictest	0	-21	swapper/0	00:34:07	0
4083531	99	34	0,30	cyclictest	0	-21	swapper/7	20:04:26	7
4083531	99	33	30,2	cyclictest	833	-21	snmpd	23:04:22	7
4083531	99	33	0,32	cyclictest	0	-21	swapper/7	22:07:37	7
4083531	99	33	0,30	cyclictest	0	-21	swapper/7	20:49:45	7
4083530	99	33	29,3	cyclictest	833	-21	snmpd	20:27:31	6
4083530	99	33	0,30	cyclictest	0	-21	swapper/6	21:23:16	6
4083530	99	33	0,30	cyclictest	0	-21	swapper/6	21:15:24	6
4083529	99	33	30,2	cyclictest	833	-21	snmpd	21:02:51	5
4083529	99	33	30,2	cyclictest	833	-21	snmpd	20:47:44	5
4083529	99	33	30,2	cyclictest	4162456	-21	apt-get	21:55:14	5
4083529	99	33	30,2	cyclictest	4162456	-21	apt-get	21:55:13	5
4083529	99	33	30,2	cyclictest	12090	-21	cat	23:25:15	5
4083529	99	33	0,30	cyclictest	0	-21	swapper/5	23:45:35	5
4083529	99	33	0,30	cyclictest	0	-21	swapper/5	23:16:34	5
4083529	99	33	0,30	cyclictest	0	-21	swapper/5	20:40:18	5
4083528	99	33	30,2	cyclictest	833	-21	snmpd	23:20:22	4
4083528	99	33	30,2	cyclictest	21541	-21	cat	23:45:14	4
4083528	99	33	29,3	cyclictest	43259	-21	cat	00:30:16	4
4083526	99	33	30,2	cyclictest	4180904	-21	kworker/u16:1+flush-8:0	23:05:27	2
4083525	99	33	31,2	cyclictest	4111641	-21	kworker/u16:1+flush-8:0	20:30:01	1
4083525	99	33	30,2	cyclictest	833	-21	snmpd	22:21:23	1
4083525	99	33	30,2	cyclictest	833	-21	snmpd	19:29:31	1
4083524	99	33	31,1	cyclictest	4128889	-21	kworker/u16:1+flush-8:0	21:10:12	0
4083524	99	33	30,2	cyclictest	4122790	-21	cat	20:30:20	0
4083531	99	32	30,1	cyclictest	833	-21	snmpd	22:17:04	7
4083531	99	32	29,2	cyclictest	833	-21	snmpd	22:43:36	7
4083531	99	32	0,31	cyclictest	0	-21	swapper/7	23:27:58	7
4083531	99	32	0,30	cyclictest	0	-21	swapper/7	19:48:10	7
4083530	99	32	30,2	cyclictest	833	-21	snmpd	22:00:25	6
4083530	99	32	29,2	cyclictest	833	-21	snmpd	22:40:15	6
4083530	99	32	29,2	cyclictest	833	-21	snmpd	20:23:50	6
4083530	99	32	29,2	cyclictest	833	-21	snmpd	19:34:25	6
4083530	99	32	29,2	cyclictest	833	-21	snmpd	19:22:00	6
4083530	99	32	0,31	cyclictest	0	-21	swapper/6	20:16:16	6
4083530	99	32	0,30	cyclictest	0	-21	swapper/6	00:00:51	6
4083529	99	32	30,2	cyclictest	31525	-21	cat	00:05:14	5
4083529	99	32	30,1	cyclictest	833	-21	snmpd	21:17:40	5
4083529	99	32	0,31	cyclictest	0	-21	swapper/5	20:55:08	5
4083529	99	32	0,30	cyclictest	0	-21	swapper/5	22:35:42	5
4083529	99	32	0,29	cyclictest	0	-21	swapper/5	19:58:20	5
4083528	99	32	30,2	cyclictest	833	-21	snmpd	20:33:22	4
4083528	99	32	0,30	cyclictest	0	-21	swapper/4	20:52:36	4
4083528	99	32	0,30	cyclictest	0	-21	swapper/4	20:35:27	4
4083527	99	32	30,2	cyclictest	833	-21	snmpd	21:11:40	3
4083527	99	32	30,2	cyclictest	833	-21	snmpd	20:43:51	3
4083527	99	32	29,2	cyclictest	833	-21	snmpd	20:55:18	3
4083527	99	32	29,2	cyclictest	4156033	-21	cat	21:40:15	3
4083526	99	32	30,2	cyclictest	833	-21	snmpd	22:46:54	2
4083525	99	32	30,2	cyclictest	4144233	-21	cat	21:15:15	1
4083525	99	32	30,1	cyclictest	833	-21	snmpd	21:37:13	1
4083525	99	32	29,2	cyclictest	833	-21	snmpd	22:14:17	1
4083525	99	32	0,30	cyclictest	0	-21	swapper/1	21:07:56	1
4083525	99	32	0,30	cyclictest	0	-21	swapper/1	20:55:35	1
4083524	99	32	30,2	cyclictest	833	-21	snmpd	21:03:59	0
4083524	99	32	0,30	cyclictest	0	-21	swapper/0	20:56:42	0
4083531	99	31	30,1	cyclictest	833	-21	snmpd	23:31:05	7
4083531	99	31	30,1	cyclictest	833	-21	snmpd	20:43:26	7
4083531	99	31	30,1	cyclictest	833	-21	snmpd	00:23:28	7
4083531	99	31	29,1	cyclictest	833	-21	snmpd	21:16:19	7
4083531	99	31	29,1	cyclictest	833	-21	snmpd	20:37:18	7
4083531	99	31	28,2	cyclictest	833	-21	snmpd	20:25:38	7
4083531	99	31	0,30	cyclictest	0	-21	swapper/7	23:09:18	7
4083531	99	31	0,30	cyclictest	0	-21	swapper/7	22:31:11	7
4083531	99	31	0,30	cyclictest	0	-21	swapper/7	19:28:04	7
4083531	99	31	0,1	cyclictest	0	-21	swapper/7	22:11:50	7
4083531	99	31	0,1	cyclictest	0	-21	swapper/7	20:24:32	7
4083530	99	31	29,2	cyclictest	833	-21	snmpd	23:14:42	6
4083530	99	31	29,2	cyclictest	833	-21	snmpd	23:04:15	6
4083530	99	31	29,1	cyclictest	833	-21	snmpd	21:04:47	6
4083530	99	31	29,1	cyclictest	833	-21	snmpd	19:57:25	6
4083530	99	31	28,2	cyclictest	833	-21	snmpd	20:58:42	6
4083530	99	31	28,2	cyclictest	36213	-21	cat	00:15:18	6
4083530	99	31	0,30	cyclictest	0	-21	swapper/6	23:19:19	6
4083530	99	31	0,30	cyclictest	0	-21	swapper/6	22:48:18	6
4083530	99	31	0,30	cyclictest	0	-21	swapper/6	21:06:12	6
4083530	99	31	0,29	cyclictest	0	-21	swapper/6	00:23:00	6
4083530	99	31	0,28	cyclictest	0	-21	swapper/6	23:39:55	6
4083530	99	31	0,1	cyclictest	0	-21	swapper/6	22:37:11	6
4083529	99	31	30,1	cyclictest	833	-21	snmpd	23:54:29	5
4083529	99	31	30,1	cyclictest	833	-21	snmpd	23:40:25	5
4083529	99	31	30,1	cyclictest	833	-21	snmpd	22:11:32	5
4083529	99	31	27,3	cyclictest	833	-21	snmpd	23:55:24	5
4083529	99	31	0,30	cyclictest	0	-21	swapper/5	22:51:42	5
4083529	99	31	0,30	cyclictest	0	-21	swapper/5	22:49:48	5
4083529	99	31	0,30	cyclictest	0	-21	swapper/5	21:52:50	5
4083529	99	31	0,30	cyclictest	0	-21	swapper/5	21:31:19	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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