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2026-04-02 - 10:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Thu Apr 02, 2026 03:37:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11532690,4chrt0-21swapper/203:18:582
11532690,4chrt0-21swapper/203:18:582
11532690,4chrt0-21swapper/203:18:582
20519994640,4cyclictest0-21swapper/003:06:590
20519994334,7cyclictest0-21swapper/003:06:550
20519994334,7cyclictest0-21swapper/003:06:550
20519994334,7cyclictest0-21swapper/003:06:550
2051999433,34cyclictest142-21systemd-journal02:42:260
2051999433,34cyclictest142-21systemd-journal02:42:260
2052099414,27cyclictest15888-21kworker/u10:2+rpciod02:42:271
2052099414,27cyclictest15888-21kworker/u10:2+rpciod02:42:271
20520994138,2cyclictest0-21swapper/103:07:071
2052099382,30cyclictest601-21snmpd02:50:491
2052099382,30cyclictest601-21snmpd02:50:491
2051999373,25cyclictest749-21runrttasks02:49:110
2051999373,25cyclictest749-21runrttasks02:49:110
20527993319,7cyclictest247482sleep202:51:112
20527993319,7cyclictest247482sleep202:51:112
20520993227,3cyclictest0-21swapper/103:14:351
20519993227,3cyclictest0-21swapper/003:13:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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