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2026-05-03 - 13:01
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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 rack3slot6.osadl.org (updated Sun May 03, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
729026660,4sleep0191irq_work/019:05:190
297812980,6chrt29779-21grep20:05:360
816629416,32sleep10-21swapper/119:06:461
8663998874,10cyclictest26-21ksoftirqd/100:10:121
8663998627,52cyclictest457-21dbus-daemon22:00:001
866399858,62cyclictest29782-21apt-get23:10:141
8663998520,52cyclictest0-21swapper/123:45:121
8663998515,58cyclictest0-21swapper/122:00:131
8663998511,59cyclictest0-21swapper/123:55:131
8663998422,54cyclictest8651-21cyclictest19:55:131
8663998418,54cyclictest0-21swapper/120:25:091
8663998415,59cyclictest0-21swapper/122:25:121
8663998414,57cyclictest0-21swapper/120:30:131
866399837,59cyclictest1107-21apt-get21:50:121
8663998368,9cyclictest26-21ksoftirqd/120:20:111
8663998340,32cyclictest26-21ksoftirqd/122:35:141
8663998315,55cyclictest0-21swapper/122:05:231
8663998314,59cyclictest0-21swapper/123:20:121
8663998314,58cyclictest0-21swapper/100:15:131
8663998217,52cyclictest0-21swapper/123:05:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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