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2026-04-10 - 19:35
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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 Apr 10, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28732993028,1cyclictest307-21systemd-journal08:25:002
28732993027,2cyclictest307-21systemd-journal07:30:012
2872999300,29cyclictest15316-21apt-get07:50:131
2872799300,2cyclictest6549-21idleruntime-cro08:40:000
2873799290,28cyclictest0-21swapper/311:00:113
2873799290,28cyclictest0-21swapper/309:10:103
2873799290,1cyclictest16413-21cron10:10:013
2872999290,28cyclictest2438-21apt-get09:40:111
2872999290,28cyclictest23735-21apt-get10:25:121
2872999290,28cyclictest0-21swapper/109:45:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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