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2026-04-01 - 16:06
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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 Wed Apr 01, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1926799380,37cyclictest0-21swapper/111:15:111
1926899322,29cyclictest621-21dbus-daemon07:50:012
1926699310,2cyclictest307-21systemd-journal09:19:590
19268993028,1cyclictest307-21systemd-journal12:00:012
19267993028,1cyclictest649-21gdbus11:50:011
19269992927,1cyclictest2859-21cron11:10:013
1926999290,28cyclictest0-21swapper/310:35:133
1926899295,0cyclictest0-21swapper/211:09:042
1926899294,25cyclictest0-21swapper/210:57:522
1926899290,28cyclictest9896-21apt-get10:15:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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