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2026-03-28 - 17:01
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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 Sat Mar 28, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1185699310,0cyclictest31196-21apt-get07:50:130
11859993027,2cyclictest22626-21sh12:05:013
1185899300,29cyclictest621-21dbus-daemon09:40:002
11859992928,1cyclictest19143-21apt-get10:50:123
11859992927,1cyclictest23792-21cron11:00:003
1185999290,28cyclictest3984-21apt-get11:25:133
1185999290,28cyclictest18889-21munin-run10:50:003
1185999290,28cyclictest0-21swapper/308:05:123
1185899290,28cyclictest24044-21apt-get07:35:122
1185799290,28cyclictest7502-21apt-get10:25:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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