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2026-04-10 - 04:06
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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 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1199199350,1cyclictest649-21gdbus20:44:592
1199199340,1cyclictest17187-21sh20:29:592
1199699320,32cyclictest0-21swapper/300:15:133
1198699322,29cyclictest307-21systemd-journal21:50:010
1198699322,29cyclictest307-21systemd-journal21:50:000
1199199300,29cyclictest21318-21apt19:30:012
11988993030,0cyclictest1938-21apt-get22:15:131
11991992927,2cyclictest28835-21cron20:55:012
11991992927,2cyclictest0-21swapper/200:15:132
11991992926,2cyclictest27331-21idleruntime-cro23:10:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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