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 18, 2025 12:46:22)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3993522	2	307	286,13	sleep6	0	-21	swapper/6	07:05:22	6
3994907	2	301	282,12	sleep2	0	-21	swapper/2	07:09:44	2
3994876	2	298	279,12	sleep7	0	-21	swapper/7	07:09:16	7
3994806	2	291	274,10	sleep4	0	-21	swapper/4	07:08:17	4
3994881	2	289	269,13	sleep3	0	-21	swapper/3	07:09:21	3
3994744	2	287	268,12	sleep5	0	-21	swapper/5	07:07:30	5
3994888	2	285	266,12	sleep1	0	-21	swapper/1	07:09:27	1
3994719	2	285	265,13	sleep0	0	-21	swapper/0	07:07:09	0
3995405	99	34	0,33	cyclictest	0	-21	swapper/7	09:26:08	7
3995405	99	33	30,2	cyclictest	870	-21	snmpd	11:39:40	7
3995405	99	33	30,2	cyclictest	870	-21	snmpd	10:49:53	7
3995405	99	33	30,2	cyclictest	870	-21	snmpd	09:05:19	7
3995405	99	33	30,2	cyclictest	870	-21	snmpd	09:04:31	7
3995405	99	33	27,5	cyclictest	870	-21	snmpd	08:53:07	7
3995405	99	33	27,5	cyclictest	870	-21	snmpd	07:37:29	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	11:34:16	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	10:55:32	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	09:51:09	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	08:58:04	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	08:34:34	7
3995405	99	33	0,30	cyclictest	0	-21	swapper/7	08:12:06	7
3995404	99	33	30,2	cyclictest	870	-21	snmpd	11:55:55	6
3995404	99	33	30,2	cyclictest	870	-21	snmpd	10:23:49	6
3995404	99	33	30,2	cyclictest	870	-21	snmpd	09:18:17	6
3995401	99	33	30,2	cyclictest	870	-21	snmpd	12:30:47	3
3995401	99	33	30,2	cyclictest	870	-21	snmpd	12:25:20	3
3995401	99	33	30,2	cyclictest	870	-21	snmpd	12:25:20	3
3995401	99	33	0,30	cyclictest	0	-21	swapper/3	08:42:52	3
3995401	99	33	0,1	cyclictest	0	-21	swapper/3	07:39:11	3
3995399	99	33	30,2	cyclictest	870	-21	snmpd	10:16:49	1
3995399	99	33	30,2	cyclictest	870	-21	snmpd	07:24:38	1
3995405	99	32	30,1	cyclictest	870	-21	snmpd	12:00:34	7
3995405	99	32	29,2	cyclictest	870	-21	snmpd	08:37:28	7
3995405	99	32	29,2	cyclictest	870	-21	snmpd	08:37:28	7
3995405	99	32	29,2	cyclictest	870	-21	snmpd	07:17:49	7
3995405	99	32	27,4	cyclictest	870	-21	snmpd	10:35:08	7
3995405	99	32	0,30	cyclictest	0	-21	swapper/7	12:30:58	7
3995405	99	32	0,30	cyclictest	0	-21	swapper/7	08:48:58	7
3995405	99	32	0,30	cyclictest	0	-21	swapper/7	07:46:26	7
3995405	99	32	0,29	cyclictest	0	-21	swapper/7	12:27:02	7
3995405	99	32	0,29	cyclictest	0	-21	swapper/7	12:27:01	7
3995404	99	32	30,2	cyclictest	870	-21	snmpd	10:42:14	6
3995404	99	32	30,1	cyclictest	870	-21	snmpd	07:56:30	6
3995404	99	32	29,2	cyclictest	870	-21	snmpd	07:18:22	6
3995403	99	32	30,2	cyclictest	870	-21	snmpd	09:51:39	5
3995403	99	32	30,2	cyclictest	870	-21	snmpd	08:24:06	5
3995402	99	32	30,1	cyclictest	870	-21	snmpd	09:55:57	4
3995402	99	32	29,2	cyclictest	1849915	-21	ntpd	10:28:13	4
3995402	99	32	0,31	cyclictest	0	-21	swapper/4	11:06:15	4
3995401	99	32	30,2	cyclictest	870	-21	snmpd	12:19:29	3
3995401	99	32	30,2	cyclictest	870	-21	snmpd	07:22:29	3
3995401	99	32	29,2	cyclictest	870	-21	snmpd	09:56:24	3
3995401	99	32	29,2	cyclictest	870	-21	snmpd	09:03:19	3
3995401	99	32	29,2	cyclictest	4091726	-21	cat	10:20:13	3
3995401	99	32	1,30	cyclictest	0	-21	swapper/3	08:25:00	3
3995401	99	32	0,31	cyclictest	0	-21	swapper/3	12:21:47	3
3995401	99	32	0,31	cyclictest	0	-21	swapper/3	10:44:11	3
3995400	99	32	30,1	cyclictest	870	-21	snmpd	11:08:00	2
3995400	99	32	29,2	cyclictest	870	-21	snmpd	11:30:23	2
3995399	99	32	30,2	cyclictest	4005723	-21	kworker/u16:0+flush-8:0	07:40:00	1
3995399	99	32	30,1	cyclictest	870	-21	snmpd	10:50:38	1
3995399	99	32	30,1	cyclictest	870	-21	snmpd	10:27:37	1
3995398	99	32	30,2	cyclictest	4078395	-21	kworker/0:1+events	11:15:23	0
3995398	99	32	30,2	cyclictest	4026807	-21	cat	08:10:15	0
3995398	99	32	29,3	cyclictest	870	-21	snmpd	09:47:06	0
3995398	99	32	29,3	cyclictest	870	-21	snmpd	07:14:49	0
3995405	99	31	30,1	cyclictest	870	-21	snmpd	10:50:02	7
3995405	99	31	30,1	cyclictest	870	-21	snmpd	08:40:34	7
3995405	99	31	29,1	cyclictest	870	-21	snmpd	10:17:34	7
3995405	99	31	29,1	cyclictest	870	-21	snmpd	08:00:15	7
3995405	99	31	28,2	cyclictest	870	-21	snmpd	10:21:58	7
3995405	99	31	28,2	cyclictest	4059121	-21	cat	09:15:15	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	11:26:21	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	11:09:24	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	10:40:08	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	09:40:45	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	09:22:02	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	07:32:53	7
3995405	99	31	0,30	cyclictest	0	-21	swapper/7	07:25:11	7
3995405	99	31	0,29	cyclictest	0	-21	swapper/7	10:30:01	7
3995405	99	31	0,29	cyclictest	0	-21	swapper/7	09:38:45	7
3995405	99	31	0,1	cyclictest	0	-21	swapper/7	11:45:19	7
3995405	99	31	0,1	cyclictest	0	-21	swapper/7	10:11:16	7
3995404	99	31	30,1	cyclictest	870	-21	snmpd	09:45:00	6
3995404	99	31	28,2	cyclictest	870	-21	snmpd	09:24:11	6
3995404	99	31	28,2	cyclictest	870	-21	snmpd	08:33:28	6
3995404	99	31	27,3	cyclictest	870	-21	snmpd	08:17:33	6
3995404	99	31	0,1	cyclictest	0	-21	swapper/6	11:30:24	6
3995404	99	31	0,1	cyclictest	0	-21	swapper/6	10:04:24	6
3995403	99	31	30,1	cyclictest	870	-21	snmpd	11:57:25	5
3995403	99	31	30,1	cyclictest	870	-21	snmpd	09:33:56	5
3995403	99	31	28,3	cyclictest	4029312	-21	cat	08:15:14	5
3995402	99	31	30,1	cyclictest	870	-21	snmpd	11:19:54	4
3995402	99	31	30,1	cyclictest	870	-21	snmpd	09:41:06	4
3995402	99	31	30,1	cyclictest	870	-21	snmpd	08:38:35	4
3995402	99	31	30,1	cyclictest	870	-21	snmpd	08:38:34	4
3995402	99	31	30,1	cyclictest	870	-21	snmpd	08:18:45	4
3995402	99	31	29,1	cyclictest	870	-21	snmpd	12:26:20	4
3995402	99	31	29,1	cyclictest	870	-21	snmpd	12:26:19	4
3995402	99	31	29,1	cyclictest	870	-21	snmpd	12:23:56	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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