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2024-05-26 - 13:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Sun May 26, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25227282233196,24sleep00-21swapper/019:05:390
25227232223168,44sleep40-21swapper/419:05:344
25227762213165,15sleep30-21swapper/319:06:223
25227292213176,24sleep10-21swapper/119:05:401
25227262213174,25sleep70-21swapper/719:05:387
25228642212180,21sleep20-21swapper/219:07:342
25228682206175,20sleep60-21swapper/619:07:386
25227802203167,22sleep50-21swapper/519:06:235
252328099258,4cyclictest0-21swapper/723:34:597
252328099258,4cyclictest0-21swapper/723:13:027
252328099258,4cyclictest0-21swapper/723:13:027
252328099258,4cyclictest0-21swapper/721:34:117
252328099258,4cyclictest0-21swapper/720:28:177
252326599250,2cyclictest2695359-21idleruntime-cro00:05:012
252325999250,24cyclictest0-21swapper/019:55:110
252327799240,1cyclictest2527143-21apt-get19:15:136
252327599240,24cyclictest0-21swapper/523:25:025
252327599240,23cyclictest1753397-21systemd-journal19:20:015
252327599240,22cyclictest2683600-21cron23:45:015
252327599240,1cyclictest2605402-21apt-get21:30:135
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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