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2026-07-18 - 09:13
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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 Sat Jul 18, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1810499320,30cyclictest307-21systemd-journal23:30:010
1811499300,29cyclictest18308-21sendmail-msp20:20:003
1811099306,11cyclictest0-21swapper/220:13:202
18110993028,1cyclictest22240-21cron23:55:012
1810699300,29cyclictest0-21swapper/123:05:001
1811499290,28cyclictest0-21swapper/322:20:123
1811099290,28cyclictest9816-21apt-get21:10:122
1811099290,28cyclictest10589-21apt-get23:30:122
18106992927,1cyclictest621-21dbus-daemon23:15:011
1810699290,28cyclictest31964-21apt-get00:15:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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