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2026-06-18 - 23:52
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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 rack8slot4.osadl.org (updated Thu Jun 18, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2020522252188,19sleep10-21swapper/107:05:251
2023192235175,19sleep70-21swapper/707:09:177
2023522229165,19sleep40-21swapper/407:09:464
2021022227167,19sleep30-21swapper/307:06:073
2023362225165,19sleep60-21swapper/607:09:326
2021692213185,18sleep50-21swapper/507:07:065
2022182208178,20sleep00-21swapper/007:07:490
2022202205176,20sleep20-21swapper/207:07:512
20258999340,33cyclictest0-21swapper/511:15:035
20258399330,2cyclictest342514-21munin-run11:20:013
20259499323,1cyclictest0-21swapper/708:32:177
202591993227,4cyclictest323019-21cron10:45:016
20258999310,30cyclictest368006-21apt-get12:05:065
202583993127,4cyclictest1-21systemd08:05:023
202583993127,3cyclictest303543-21true10:10:013
202578993127,3cyclictest289577-21cron09:45:011
20259499300,29cyclictest362424-21apt-get11:55:037
202591993028,1cyclictest279850-21systemd-journal08:00:016
20259199300,29cyclictest1-21systemd12:40:016
20259199300,29cyclictest1-21systemd09:10:016
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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