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2026-04-19 - 18:12
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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 Apr 19, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
803499330,32cyclictest0-21swapper/107:20:111
8034993128,3cyclictest7142-21apt-get09:25:121
8034993128,3cyclictest0-21swapper/108:00:121
803499310,30cyclictest14191-21apt-get09:40:111
803699300,29cyclictest597-21dump-pmu-power11:30:013
803599300,29cyclictest307-21systemd-journal08:55:002
803499300,1cyclictest307-21systemd-journal11:40:001
803699290,1cyclictest18818-21munin-run11:00:003
803599290,28cyclictest7368-21apt-get10:35:142
803599290,1cyclictest14650-21cron12:00:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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