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2025-03-22 - 15:46

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 Sat Mar 22, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
209479121430,7sleep234-21ksoftirqd/207:05:282
209479121430,7sleep234-21ksoftirqd/207:05:272
1623991040,18rtkit-daemon0-21swapper/008:48:023
162399820,65rtkit-daemon0-21swapper/007:08:280
162399820,65rtkit-daemon0-21swapper/007:08:280
21401652800,6sleep013-21ksoftirqd/009:20:250
162399750,5rtkit-daemon0-21swapper/109:36:541
209526327339,28sleep10-21swapper/107:08:541
209526327339,28sleep10-21swapper/107:08:541
209509826948,14sleep30-21swapper/307:06:463
209509826948,14sleep30-21swapper/307:06:463
162399680,9rtkit-daemon1622-21rtkit-daemon09:53:392
162399670,9rtkit-daemon1622-21rtkit-daemon08:55:402
21233092660,7chrt2197014-21PK-Backend08:30:170
162399660,9rtkit-daemon1622-21rtkit-daemon08:50:362
162399590,9rtkit-daemon1622-21rtkit-daemon10:25:172
162399580,9rtkit-daemon1622-21rtkit-daemon09:09:422
162399560,9rtkit-daemon1622-21rtkit-daemon09:49:352
162399560,8rtkit-daemon1622-21rtkit-daemon11:26:170
2095494995329,20cyclictest1753-21gnome-shell10:27:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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