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2026-03-16 - 06:00
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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 20 highest latencies:
System rackeslot5.osadl.org (updated Mon Mar 16, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9224993124,1cyclictest7561-21apt-get23:40:122
9224993027,3cyclictest0-21swapper/223:10:122
9224993027,3cyclictest0-21swapper/220:50:122
922499300,29cyclictest29767-21cron22:10:002
9229992928,1cyclictest30663-21cron00:30:003
922999290,28cyclictest0-21swapper/322:20:133
922999290,1cyclictest3263-21apt-get20:05:123
9224992928,1cyclictest0-21swapper/223:35:012
922499290,28cyclictest27187-21apt-get20:55:092
922499290,28cyclictest0-21swapper/200:05:122
922499290,1cyclictest23677-21cron00:15:012
922199290,1cyclictest0-21swapper/119:35:011
9219992927,1cyclictest935-21apt-get20:00:140
9219992927,1cyclictest307-21systemd-journal00:40:010
9219992927,1cyclictest1474-21idleruntime-cro21:10:020
921999290,28cyclictest0-21swapper/021:25:110
921999290,28cyclictest0-21swapper/021:10:120
921999290,1cyclictest2318-21apt-get22:20:120
9229992828,0cyclictest0-21swapper/319:25:123
9229992828,0cyclictest0-21swapper/300:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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