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2024-02-25 - 10:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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 rack0slot5s.osadl.org (updated Sun Feb 25, 2024 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17369092407401,4sleep60-21swapper/619:08:5812
17368152406400,4sleep50-21swapper/519:07:3711
17368212405399,4sleep100-21swapper/1019:07:422
17367402405399,4sleep20-21swapper/219:06:318
17366902402395,4sleep70-21swapper/719:05:4713
17339972402396,4sleep150-21swapper/1519:05:077
17369642401395,4sleep80-21swapper/819:09:4814
17367782400394,4sleep30-21swapper/319:07:039
17367162400394,4sleep130-21swapper/1319:06:095
17367792399393,4sleep40-21swapper/419:07:0410
17369122398393,3sleep90-21swapper/919:09:0115
17368452397391,4sleep140-21swapper/1419:08:026
17366962397385,4sleep120-21swapper/1219:05:524
17369142394388,4sleep110-21swapper/1119:09:033
17367922392386,4sleep00-21swapper/019:07:160
17366842389383,4sleep10-21swapper/119:05:411
173732699445,25cyclictest0-21swapper/1521:55:317
173732699424,24cyclictest0-21swapper/1523:56:207
173732699404,11cyclictest0-21swapper/1523:12:247
173732699404,11cyclictest0-21swapper/1522:17:297
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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