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2026-03-20 - 05:45
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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 rackeslot5.osadl.org (updated Fri Mar 20, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2281799340,33cyclictest0-21swapper/322:25:003
2281799330,32cyclictest0-21swapper/300:10:113
22817993025,4cyclictest30501-21munin-run00:00:013
22816993028,1cyclictest28495-21cron21:40:002
22816993026,3cyclictest12144-21apt-get21:05:122
22814993027,2cyclictest15010-21cron22:20:000
2281499301,1cyclictest649-21gdbus22:35:010
2281799290,28cyclictest9838-21apt-get00:25:133
22816992928,0cyclictest9823-21apt-get21:00:102
2281699290,1cyclictest32683-21apt-get19:30:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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