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2026-03-30 - 03:53
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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 Mar 29, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1692399300,29cyclictest26850-21perf08:39:592
1692899290,1cyclictest8560-21cron12:35:003
1692899290,1cyclictest20984-21cron09:35:003
16923992927,1cyclictest5744-21munin-run11:20:012
1692399290,28cyclictest22119-21apt-get10:45:122
1692399290,1cyclictest5839-21munin-run07:55:002
1691999290,1cyclictest447-21cron10:00:001
16914992927,1cyclictest25649-21sh09:45:010
1691499290,28cyclictest4323-21apt-get09:00:100
16928992828,0cyclictest0-21swapper/312:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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