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2024-06-22 - 11:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Sat Jun 22, 2024 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32701210390,9sleep10-21swapper/119:08:001
3268829481,9sleep30-21swapper/319:07:493
3107528769,12sleep20-21swapper/219:05:202
3269528466,13sleep00-21swapper/019:07:550
321802480,0sleep30-21swapper/300:16:523
49499330,32cyclictest0-21swapper/322:03:483
494993129,1cyclictest0-21swapper/322:28:273
494993029,1cyclictest0-21swapper/323:20:483
494992928,1cyclictest0-21swapper/323:49:073
48999291,27cyclictest12121-21missed_timers00:25:192
494992827,1cyclictest0-21swapper/323:27:083
494992827,1cyclictest0-21swapper/323:07:483
494992827,1cyclictest0-21swapper/322:59:273
494992827,1cyclictest0-21swapper/322:33:483
494992827,1cyclictest0-21swapper/322:20:283
494992827,1cyclictest0-21swapper/322:18:273
494992827,1cyclictest0-21swapper/321:20:283
489992625,1cyclictest0-21swapper/200:22:402
494992524,1cyclictest0-21swapper/321:12:083
489992523,1cyclictest0-21swapper/221:15:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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