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 50 highest latencies:

System r0s0s.osadl.org (updated Sat Dec 27, 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
2328110	2	300	271,21	sleep7	0	-21	swapper/7	19:06:55	7
2328115	2	296	275,13	sleep3	0	-21	swapper/3	19:06:59	3
2328114	2	290	254,28	sleep2	0	-21	swapper/2	19:06:58	2
2328126	2	289	272,10	sleep5	0	-21	swapper/5	19:07:09	5
2326227	2	289	271,11	sleep0	0	-21	swapper/0	19:05:03	0
2328282	2	288	264,16	sleep6	0	-21	swapper/6	19:09:19	6
2328220	2	287	266,13	sleep4	0	-21	swapper/4	19:08:29	4
2328083	2	285	266,12	sleep1	0	-21	swapper/1	19:06:33	1
2328806	99	36	29,6	cyclictest	870	-21	snmpd	21:23:14	3
2328806	99	35	30,4	cyclictest	870	-21	snmpd	22:16:53	3
2328810	99	33	31,1	cyclictest	870	-21	snmpd	22:01:43	7
2328810	99	33	30,2	cyclictest	870	-21	snmpd	20:56:05	7
2328810	99	33	30,2	cyclictest	2468598	-21	cat	23:45:15	7
2328810	99	33	30,2	cyclictest	2407994	-21	cat	21:45:15	7
2328810	99	33	29,3	cyclictest	870	-21	snmpd	22:48:36	7
2328809	99	33	30,2	cyclictest	870	-21	snmpd	00:05:50	6
2328809	99	33	30,2	cyclictest	2455826	-21	cat	23:20:14	6
2328809	99	33	30,2	cyclictest	2337696	-21	cat	19:25:14	6
2328809	99	33	0,30	cyclictest	0	-21	swapper/6	22:17:52	6
2328808	99	33	31,2	cyclictest	870	-21	snmpd	22:07:22	5
2328808	99	33	30,2	cyclictest	870	-21	snmpd	23:48:19	5
2328807	99	33	0,30	cyclictest	0	-21	swapper/4	19:53:27	4
2328806	99	33	30,2	cyclictest	870	-21	snmpd	19:25:32	3
2328806	99	33	29,3	cyclictest	870	-21	snmpd	20:42:13	3
2328806	99	33	27,5	cyclictest	870	-21	snmpd	23:55:16	3
2328805	99	33	29,3	cyclictest	0	-21	swapper/2	19:34:35	2
2328805	99	33	0,30	cyclictest	0	-21	swapper/2	21:14:56	2
2328805	99	33	0,30	cyclictest	0	-21	swapper/2	20:07:12	2
2328804	99	33	30,2	cyclictest	870	-21	snmpd	00:39:30	1
2328803	99	33	30,2	cyclictest	870	-21	snmpd	23:45:10	0
2328803	99	33	30,2	cyclictest	2433283	-21	cat	22:35:16	0
2328803	99	33	0,32	cyclictest	0	-21	swapper/0	21:05:05	0
2328803	99	33	0,30	cyclictest	0	-21	swapper/0	19:46:23	0
2328803	99	33	0,30	cyclictest	0	-21	swapper/0	00:20:14	0
2328810	99	32	30,1	cyclictest	870	-21	snmpd	23:35:25	7
2328810	99	32	30,1	cyclictest	870	-21	snmpd	23:35:25	7
2328810	99	32	30,1	cyclictest	870	-21	snmpd	23:25:55	7
2328810	99	32	30,1	cyclictest	870	-21	snmpd	21:01:53	7
2328810	99	32	30,1	cyclictest	870	-21	snmpd	00:09:41	7
2328809	99	32	30,2	cyclictest	870	-21	snmpd	21:58:56	6
2328809	99	32	30,1	cyclictest	870	-21	snmpd	21:54:22	6
2328809	99	32	30,1	cyclictest	870	-21	snmpd	21:54:22	6
2328809	99	32	29,2	cyclictest	870	-21	snmpd	20:38:47	6
2328809	99	32	0,31	cyclictest	0	-21	swapper/6	22:23:11	6
2328808	99	32	30,2	cyclictest	2360436	-21	cat	20:10:13	5
2328808	99	32	30,2	cyclictest	2340184	-21	cat	19:30:15	5
2328808	99	32	29,2	cyclictest	870	-21	snmpd	20:16:45	5
2328808	99	32	0,29	cyclictest	0	-21	swapper/5	22:51:33	5
2328807	99	32	30,2	cyclictest	870	-21	snmpd	21:58:01	4
2328807	99	32	30,2	cyclictest	870	-21	snmpd	21:06:02	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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