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2026-07-05 - 22:59
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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 Sun Jul 05, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2067699316,25cyclictest0-21swapper/210:58:322
20669993028,1cyclictest629-21systemd-logind09:35:010
20669993028,1cyclictest621-21dbus-daemon07:15:020
2066999300,29cyclictest621-21dbus-daemon07:30:010
2067799290,28cyclictest12524-21perf08:00:013
20676992926,2cyclictest13637-21turbostat.cron09:10:012
2067699290,28cyclictest16795-21apt-get10:25:132
2067699290,28cyclictest0-21swapper/209:30:122
2067699290,28cyclictest0-21swapper/208:15:122
20670992929,0cyclictest0-21swapper/107:45:121
2067099290,28cyclictest25883-21apt-get07:20:131
2067099290,1cyclictest22092-21perf11:45:001
20669992927,1cyclictest307-21systemd-journal10:55:010
20669992927,1cyclictest14739-21munin-run11:30:010
2066999290,28cyclictest0-21swapper/010:05:120
20677992827,1cyclictest3369-21apt-get11:05:133
20677992827,1cyclictest28268-21apt-get09:40:113
20677992826,1cyclictest28537-21munin-run10:50:003
2067799280,28cyclictest0-21swapper/311:30:123
2067699280,27cyclictest0-21swapper/209:25:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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