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2026-05-16 - 19:05
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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 May 16, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16275993128,2cyclictest621-21dbus-daemon12:10:002
1627999300,1cyclictest307-21systemd-journal09:30:183
1627599300,29cyclictest307-21systemd-journal07:30:012
1626999300,29cyclictest2370-21cron12:25:010
1627999290,28cyclictest31120-21apt-get08:50:123
1627999290,28cyclictest24949-21munin-run10:55:013
1627599294,14cyclictest0-21swapper/211:54:472
1627599290,28cyclictest30303-21sendmail-msp07:40:012
1627099290,28cyclictest458-21apt-get07:45:141
1627099290,28cyclictest0-21swapper/108:10:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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