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 Apr 10, 2026 12:46:23)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
363531	2	301	291,6	sleep6	0	-21	swapper/6	07:06:45	6
363528	2	299	260,13	sleep3	0	-21	swapper/3	07:06:42	3
363726	2	297	276,13	sleep5	0	-21	swapper/5	07:09:33	5
363514	2	296	288,5	sleep7	0	-21	swapper/7	07:06:28	7
363516	2	291	274,10	sleep0	0	-21	swapper/0	07:06:30	0
363667	2	288	267,13	sleep2	0	-21	swapper/2	07:08:42	2
363594	2	287	266,13	sleep4	0	-21	swapper/4	07:07:38	4
363573	2	285	265,13	sleep1	0	-21	swapper/1	07:07:19	1
364234	99	67	65,2	cyclictest	459470	-21	kworker/u16:3+events_unbound	10:24:13	3
364234	99	45	42,3	cyclictest	392187	-21	kworker/u16:3+flush-8:0	09:00:00	3
364234	99	34	32,2	cyclictest	421797	-21	ntpq	09:00:25	3
364234	99	34	31,2	cyclictest	386193	-21	ntpq	07:50:26	3
364238	99	33	30,2	cyclictest	449069	-21	snmpd	11:35:31	7
364238	99	33	30,2	cyclictest	449069	-21	snmpd	07:53:15	7
364236	99	33	0,30	cyclictest	0	-21	swapper/5	11:20:21	5
364236	99	33	0,30	cyclictest	0	-21	swapper/5	11:20:20	5
364235	99	33	30,2	cyclictest	444241	-21	ntpq	09:45:22	4
364235	99	33	0,30	cyclictest	0	-21	swapper/4	10:44:56	4
364234	99	33	31,1	cyclictest	469848	-21	ntpq	10:35:23	3
364233	99	33	30,2	cyclictest	449069	-21	snmpd	12:21:44	2
364233	99	33	30,2	cyclictest	449069	-21	snmpd	11:44:28	2
364233	99	33	30,2	cyclictest	449069	-21	snmpd	08:00:44	2
364233	99	33	30,2	cyclictest	449069	-21	snmpd	07:39:31	2
364233	99	33	30,2	cyclictest	449069	-21	snmpd	07:39:30	2
364233	99	33	0,30	cyclictest	0	-21	swapper/2	07:45:46	2
364232	99	33	30,2	cyclictest	449069	-21	snmpd	09:42:18	1
364232	99	33	30,2	cyclictest	449069	-21	snmpd	08:09:05	1
364232	99	33	0,1	cyclictest	0	-21	swapper/1	08:15:55	1
364238	99	32	30,1	cyclictest	449069	-21	snmpd	08:52:56	7
364238	99	32	29,2	cyclictest	449069	-21	snmpd	09:58:22	7
364238	99	32	0,31	cyclictest	0	-21	swapper/7	11:30:15	7
364238	99	32	0,31	cyclictest	0	-21	swapper/7	11:19:30	7
364238	99	32	0,31	cyclictest	0	-21	swapper/7	09:53:39	7
364238	99	32	0,31	cyclictest	0	-21	swapper/7	08:38:59	7
364238	99	32	0,31	cyclictest	0	-21	swapper/7	08:05:15	7
364237	99	32	30,2	cyclictest	449069	-21	snmpd	12:04:31	6
364237	99	32	30,2	cyclictest	449069	-21	snmpd	10:17:23	6
364237	99	32	30,2	cyclictest	393428	-21	cat	08:05:15	6
364236	99	32	30,1	cyclictest	449069	-21	snmpd	12:12:19	5
364236	99	32	30,1	cyclictest	449069	-21	snmpd	11:15:14	5
364236	99	32	29,2	cyclictest	449069	-21	snmpd	09:04:54	5
364236	99	32	29,2	cyclictest	449069	-21	snmpd	07:36:52	5
364236	99	32	29,2	cyclictest	449069	-21	snmpd	07:36:51	5
364236	99	32	0,31	cyclictest	0	-21	swapper/5	12:25:16	5
364236	99	32	0,29	cyclictest	0	-21	swapper/5	12:24:41	5
364235	99	32	30,2	cyclictest	449069	-21	snmpd	10:34:10	4
364235	99	32	29,2	cyclictest	449069	-21	snmpd	09:32:40	4
364235	99	32	0,31	cyclictest	0	-21	swapper/4	07:30:51	4
364235	99	32	0,30	cyclictest	0	-21	swapper/4	10:59:18	4
364234	99	32	30,2	cyclictest	449069	-21	snmpd	11:23:19	3
364234	99	32	30,2	cyclictest	449069	-21	snmpd	11:23:18	3
364234	99	32	30,2	cyclictest	449069	-21	snmpd	11:14:54	3
364234	99	32	30,2	cyclictest	449069	-21	snmpd	10:03:52	3
364234	99	32	30,2	cyclictest	449069	-21	snmpd	08:25:32	3
364234	99	32	30,2	cyclictest	447517	-21	sshd	09:50:49	3
364234	99	32	30,1	cyclictest	528772	-21	munin-run	12:35:00	3
364234	99	32	29,3	cyclictest	434379	-21	ntpq	09:25:25	3
364233	99	32	30,1	cyclictest	449069	-21	snmpd	09:42:31	2
364233	99	32	30,1	cyclictest	449069	-21	snmpd	08:07:01	2
364233	99	32	0,31	cyclictest	0	-21	swapper/2	09:15:14	2
364233	99	32	0,30	cyclictest	0	-21	swapper/2	10:17:55	2
364232	99	32	30,1	cyclictest	449069	-21	snmpd	11:37:58	1
364231	99	32	30,2	cyclictest	449069	-21	snmpd	10:44:59	0
364231	99	32	30,2	cyclictest	449069	-21	snmpd	08:37:19	0
364231	99	32	30,2	cyclictest	449069	-21	snmpd	08:30:29	0
364231	99	32	30,2	cyclictest	449069	-21	snmpd	07:59:11	0
364231	99	32	30,2	cyclictest	449069	-21	snmpd	07:24:40	0
364231	99	32	29,2	cyclictest	449069	-21	snmpd	09:40:52	0
364231	99	32	29,2	cyclictest	446383	-21	cat	09:50:14	0
364231	99	32	29,2	cyclictest	421259	-21	cat	09:00:14	0
364231	99	32	29,2	cyclictest	380652	-21	cat	07:40:15	0
364231	99	32	29,2	cyclictest	373126	-21	cat	07:25:15	0
364231	99	32	0,31	cyclictest	0	-21	swapper/0	08:05:26	0
364238	99	31	30,1	cyclictest	449069	-21	snmpd	09:33:34	7
364238	99	31	29,1	cyclictest	449069	-21	snmpd	09:01:27	7
364238	99	31	28,2	cyclictest	449069	-21	snmpd	09:13:33	7
364238	99	31	28,2	cyclictest	449069	-21	snmpd	08:01:37	7
364238	99	31	28,2	cyclictest	0	-21	swapper/7	12:06:31	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	12:02:14	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	10:50:23	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	10:48:52	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	10:30:13	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	10:15:29	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	10:04:42	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	09:21:51	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	09:05:06	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	07:56:08	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	07:40:15	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	07:27:49	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	07:18:46	7
364238	99	31	0,30	cyclictest	0	-21	swapper/7	07:13:03	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	11:55:13	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	11:47:34	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	10:35:49	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	10:10:13	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	10:05:13	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	09:37:25	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	08:41:06	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	07:37:43	7
364238	99	31	0,1	cyclictest	0	-21	swapper/7	07:37:43	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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