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2025-12-10 - 05:30
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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 rack8slot4.osadl.org (updated Wed Dec 10, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34908272228169,46sleep30-21swapper/319:09:413
34886022228171,19sleep00-21swapper/019:05:360
34907452224168,45sleep50-21swapper/519:08:305
34905872218166,41sleep20-21swapper/219:06:182
34885972212179,21sleep40-21swapper/419:05:324
34886182211175,22sleep70-21swapper/719:05:517
34908252210176,21sleep10-21swapper/119:09:391
34906022210177,21sleep60-21swapper/619:06:316
349104299320,28cyclictest0-21swapper/021:55:000
3491054993128,2cyclictest3617411-21cron23:00:004
3491050993128,2cyclictest3820478-21systemd-journal23:40:003
3491050993128,2cyclictest3820478-21systemd-journal23:40:003
3491050993128,2cyclictest3574039-21dump-pmu-power21:40:003
349105099310,30cyclictest3664103-21sh00:25:003
349105099310,30cyclictest3590474-21idleruntime-cro22:10:003
3491042993127,3cyclictest3519335-21sh20:00:000
3491042993127,1cyclictest0-21swapper/019:25:540
3491066993027,2cyclictest3574034-21latency_hist21:40:007
349106699300,29cyclictest0-21swapper/720:40:557
349106399300,1cyclictest3574048-21munin-run21:40:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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