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2026-01-05 - 12:49
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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 Mon Jan 05, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2067993128,2cyclictest17081-21cron22:00:002
2069993028,1cyclictest17086-21cron22:00:013
2069993027,2cyclictest4233-21perf23:50:023
206999300,29cyclictest30536-21idleruntime-cro21:20:003
206799300,29cyclictest30513-21cron21:20:002
2062993028,1cyclictest621-21dbus-daemon22:20:011
2069992927,1cyclictest621-21dbus-daemon22:45:013
206999290,28cyclictest16245-21apt-get00:15:123
206999290,28cyclictest0-21swapper/300:30:013
206999290,1cyclictest30580-21apt-get20:10:153
2062992927,1cyclictest621-21dbus-daemon00:00:011
205999290,28cyclictest25305-21munin-run00:35:010
205999290,28cyclictest0-21swapper/019:35:140
205999290,28cyclictest0-21swapper/000:25:010
2069992827,0cyclictest0-21swapper/323:30:113
206999280,27cyclictest13276-21apt-get23:00:123
206999280,27cyclictest0-21swapper/300:05:123
2067992827,1cyclictest6005-21cron22:45:012
2067992827,1cyclictest25937-21apt-get20:00:142
2067992826,1cyclictest18944-21apt-get19:45:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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