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2026-04-29 - 13:07
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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 Wed Apr 29, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1183199300,1cyclictest307-21systemd-journal23:25:013
11815993030,0cyclictest21589-21lspci19:27:090
1183199290,28cyclictest0-21swapper/322:20:123
11826992928,0cyclictest0-21swapper/221:50:012
11826992927,1cyclictest4589-21dump-pmu-power21:10:012
1182699290,28cyclictest10919-21apt-get23:40:132
11822992928,1cyclictest17032-21apt-get19:20:121
1182299290,28cyclictest0-21swapper/123:20:001
11815992927,1cyclictest621-21dbus-daemon19:50:010
1181599290,1cyclictest0-21swapper/022:55:130
1183199280,27cyclictest0-21swapper/319:50:133
1183199280,0cyclictest0-21swapper/321:00:123
11826992828,0cyclictest0-21swapper/220:05:122
11826992828,0cyclictest0-21swapper/219:55:132
11826992827,1cyclictest28469-21apt-get22:00:112
11826992827,1cyclictest18544-21cron21:40:012
1182699280,27cyclictest0-21swapper/222:05:122
1182699280,0cyclictest0-21swapper/220:10:132
11822992828,0cyclictest22974-21apt-get20:40:131
11822992828,0cyclictest0-21swapper/122:30:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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