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2024-04-23 - 07:30

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 Tue Apr 23, 2024 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
378818222270,8sleep30-21swapper/319:05:133
3789345211270,9sleep10-21swapper/119:09:541
379624121070,7sleep21358-1kworker/u9:119:25:282
378950699983,15cyclictest881253-21Renderer21:33:231
3789512999683,8cyclictest880726-21firefox21:22:423
378951099962,89cyclictest880726-21firefox21:31:452
378950299962,90cyclictest0-21swapper/021:38:390
378950299962,8cyclictest0-21swapper/020:35:480
378950299954,87cyclictest0-21swapper/021:10:390
378950299952,8cyclictest0-21swapper/021:47:030
378950299952,89cyclictest0-21swapper/021:09:080
378950299952,89cyclictest0-21swapper/021:04:360
378950299943,87cyclictest0-21swapper/021:33:230
378950299942,89cyclictest0-21swapper/019:43:260
378950299942,89cyclictest0-21swapper/019:43:260
378950299942,88cyclictest0-21swapper/020:42:320
378950299942,87cyclictest0-21swapper/020:50:590
378950299942,87cyclictest0-21swapper/020:50:590
378950299942,7cyclictest0-21swapper/020:57:010
162399940,25rtkit-daemon0-21swapper/222:59:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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