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2026-05-29 - 22:25
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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 May 29, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13135993028,1cyclictest9995-21cron11:00:013
13131993027,2cyclictest3980-21cron08:20:012
1313199300,30cyclictest0-21swapper/212:02:132
13125993028,1cyclictest19024-21apt-get10:10:120
13135992927,1cyclictest0-21swapper/312:30:013
1313599290,28cyclictest0-21swapper/309:20:113
13131992927,1cyclictest22725-21apt-get07:40:112
13131992926,2cyclictest1827-21cron09:35:002
1313199290,1cyclictest3000-21apt-get10:45:132
1313199290,1cyclictest0-21swapper/212:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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