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2025-07-15 - 03:05
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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 Mon Jul 14, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
479499311,29cyclictest26100-21cron09:05:001
4799993028,1cyclictest609-21dbus-daemon10:05:003
4794993027,2cyclictest10413-21awk10:50:001
479099300,29cyclictest609-21dbus-daemon09:35:010
479999290,28cyclictest5028-21apt-get07:10:113
479999290,28cyclictest0-21swapper/308:40:153
479999290,1cyclictest25338-21apt-get12:30:163
4795992927,1cyclictest303-21systemd-journal10:05:002
4794992928,1cyclictest5711-21apt-get09:30:151
479499290,28cyclictest22337-21apt-get11:15:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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