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2026-08-13 - 02:45
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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 rack3slot6.osadl.org (updated Thu Aug 13, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2068991128,79cyclictest0-21swapper/021:25:130
206899997,72cyclictest0-21swapper/021:30:120
206899996,71cyclictest0-21swapper/021:20:140
154729723,27sleep00-21swapper/019:06:500
206899956,20cyclictest0-21swapper/020:50:130
2079998825,52cyclictest457-21dbus-daemon00:39:011
206899886,64cyclictest0-21swapper/019:50:140
206899886,64cyclictest0-21swapper/019:50:140
2079998511,60cyclictest3898-21apt-get23:45:131
207999827,24cyclictest7380-21apt-get23:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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