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2025-12-26 - 05:36
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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 20 highest latencies:
System rackeslot5.osadl.org (updated Fri Dec 26, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3594993028,1cyclictest621-21dbus-daemon21:20:003
359499300,29cyclictest8478-21cron19:20:013
3586993028,1cyclictest4356-21cron20:20:011
358699300,29cyclictest1-21systemd20:30:001
359499290,28cyclictest8971-21sh23:55:003
359499290,28cyclictest13726-21munin-run20:40:003
359499290,28cyclictest0-21swapper/323:30:023
359499290,28cyclictest0-21swapper/323:10:143
359499290,28cyclictest0-21swapper/322:25:133
359499290,1cyclictest621-21dbus-daemon00:00:003
3592992927,1cyclictest621-21dbus-daemon00:30:002
359299290,28cyclictest7828-21apt-get21:35:112
359299290,28cyclictest13745-21apt-get19:30:122
3586992927,1cyclictest649-21gdbus22:05:011
358699290,28cyclictest5506-21apt-get21:30:121
358699290,28cyclictest0-21swapper/121:10:141
358699290,1cyclictest6193-21munin-run19:15:001
358699290,1cyclictest27985-21munin-run21:10:001
358399290,28cyclictest8730-21apt-get22:45:140
358399290,28cyclictest25373-21apt-get19:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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