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2026-05-12 - 05:50
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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 Tue May 12, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3000099310,30cyclictest30726-21cron21:30:001
3000599300,29cyclictest0-21swapper/300:15:123
3000599290,28cyclictest26889-21apt-get22:30:123
3000599290,28cyclictest0-21swapper/322:20:003
3000599290,1cyclictest18726-21apt-get00:30:133
30001992927,1cyclictest26629-21munin-run22:30:012
30001992927,1cyclictest20798-21munin-run00:35:012
30001992926,2cyclictest3497-21cron22:50:002
3000199290,28cyclictest21693-21apt-get21:10:122
3000199290,28cyclictest1211-21munin-run22:45:012
3000199290,28cyclictest0-21swapper/222:00:132
30000992928,0cyclictest0-21swapper/123:30:121
3000099290,28cyclictest0-21swapper/123:45:131
3000099290,28cyclictest0-21swapper/123:35:111
3000099290,28cyclictest0-21swapper/121:00:121
3000099290,28cyclictest0-21swapper/120:50:001
3000099290,28cyclictest0-21swapper/119:15:111
3000099290,1cyclictest10281-21munin-run21:55:011
29995992927,1cyclictest307-21systemd-journal19:15:010
2999599290,28cyclictest0-21swapper/021:45:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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