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2026-05-07 - 23:41
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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 rackeslot5.osadl.org (updated Thu May 07, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
871999310,30cyclictest12239-21sh08:25:002
871999300,29cyclictest307-21systemd-journal10:25:012
871999300,29cyclictest307-21systemd-journal10:25:012
871999300,29cyclictest14903-21apt-get08:30:102
8714993028,1cyclictest307-21systemd-journal07:40:001
8721992928,1cyclictest31258-21apt-get09:05:143
872199290,1cyclictest21889-21apt-get08:45:103
871999290,28cyclictest12532-21apt-get08:25:112
871999290,28cyclictest0-21swapper/211:15:012
871499290,28cyclictest0-21swapper/111:45:111
871499290,28cyclictest0-21swapper/107:15:111
871199290,28cyclictest0-21swapper/008:15:110
871199290,28cyclictest0-21swapper/007:15:110
872199280,27cyclictest20880-21apt-get07:35:123
872199280,0cyclictest0-21swapper/307:25:123
8719992826,1cyclictest621-21dbus-daemon11:45:012
871999280,27cyclictest0-21swapper/210:25:112
8714992828,0cyclictest0-21swapper/108:55:111
8714992826,1cyclictest27657-21munin-run12:25:011
871499280,28cyclictest0-21swapper/110:35:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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