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2024-09-08 - 07:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 20 highest latencies:
System rackcslot7s.osadl.org (updated Sun Sep 08, 2024 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229523222120,8sleep10-21swapper/119:05:111
229665428871,9sleep30-21swapper/319:09:453
229602528857,25sleep20-21swapper/219:05:252
23915592870,4sleep10-21swapper/123:35:131
23512352830,4sleep20-21swapper/221:40:242
229647828364,13sleep00-21swapper/019:07:280
23514292790,6sleep013-21ksoftirqd/021:40:300
162399700,52rtkit-daemon1753-21gnome-shell23:28:502
162399650,18rtkit-daemon1622-21rtkit-daemon21:19:391
162399630,18rtkit-daemon1622-21rtkit-daemon22:27:461
162399620,18rtkit-daemon1622-21rtkit-daemon22:16:121
162399620,17rtkit-daemon1622-21rtkit-daemon21:21:181
23866392610,13sleep3411rcuc/323:20:223
23122652610,13chrt42-21ksoftirqd/319:50:213
23122652610,13chrt42-21ksoftirqd/319:50:213
2296812995916,20cyclictest2402581-21/usr/sbin/munin00:05:270
2296812995817,15cyclictest1753-21gnome-shell19:29:260
2296812995810,24cyclictest2376974-21expr22:55:130
2296812995717,16cyclictest1753-21gnome-shell19:55:190
2296812995713,18cyclictest2408139-21/usr/sbin/munin00:20:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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