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2026-06-27 - 11:34
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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
Characteristics of the 10 highest latencies:
System rackdslot1.osadl.org (updated Sat Jun 27, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491700,9ptp4l11440-21apt-get19:05:111
134491700,9ptp4l11440-21apt-get19:05:111
126252700,3sleep012626-21hwlatdetect23:45:140
13777996511,11cyclictest18851-21taskset23:59:453
13777996411,12cyclictest6865-21taskset22:21:453
13776996428,4cyclictest33-21ksoftirqd/221:25:262
1377799639,11cyclictest16160-21taskset22:42:073
1377799639,11cyclictest16160-21taskset22:42:073
13777996310,12cyclictest4931-21taskset23:29:323
13777996310,11cyclictest16482-21chrt23:53:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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