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2026-05-10 - 22:19
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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 10 highest latencies:
System rackeslot5.osadl.org (updated Sun May 10, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2534999316,25cyclictest0-21swapper/210:55:392
2534999316,25cyclictest0-21swapper/208:07:442
2535499300,29cyclictest27982-21cron08:25:003
2534699300,2cyclictest16888-21perf09:10:011
2534399301,28cyclictest141rcuc/012:30:120
2535499290,28cyclictest5459-21apt-get08:45:113
2535499290,1cyclictest0-21swapper/309:40:193
25349992927,1cyclictest621-21dbus-daemon08:15:002
2534999290,28cyclictest16328-21sendmail-msp08:00:012
2534999290,28cyclictest0-21swapper/209:40:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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