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2026-08-22 - 13:37
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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 Sat Aug 22, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
569099310,2cyclictest307-21systemd-journal23:35:013
568799310,2cyclictest19913-21cron19:40:010
569099300,1cyclictest26548-21cron00:30:013
5688993028,1cyclictest8532-21sh20:25:011
5687993026,4cyclictest0-21swapper/023:30:120
5690992928,0cyclictest24866-21apt-get19:50:123
5690992927,1cyclictest27924-21cron23:25:013
569099290,28cyclictest0-21swapper/322:50:013
569099290,28cyclictest0-21swapper/322:40:113
569099290,28cyclictest0-21swapper/322:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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