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2026-03-27 - 11:00
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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 Fri Mar 27, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1349993028,1cyclictest621-21dbus-daemon19:30:013
1347993028,1cyclictest5961-21cron19:20:001
134799300,29cyclictest30451-21apt-get21:20:111
134799300,29cyclictest30451-21apt-get21:20:111
134799300,29cyclictest28133-21sh23:55:011
1346993028,1cyclictest649-21gdbus19:55:010
134899290,28cyclictest3426-21apt-get00:10:122
134899290,1cyclictest27321-21munin-run20:05:002
134799295,11cyclictest0-21swapper/119:48:081
134799290,28cyclictest0-21swapper/122:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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