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2026-07-27 - 06:52
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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 Jul 27, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
360299300,29cyclictest22235-21cron19:50:023
3597993028,1cyclictest621-21dbus-daemon22:50:001
3597993028,1cyclictest16920-21cron21:55:001
359799300,29cyclictest28866-21sh22:20:011
3602992927,1cyclictest31444-21apt-get23:35:023
360299290,28cyclictest32445-21sh20:10:003
360299290,28cyclictest29798-21munin-run00:40:023
360299290,28cyclictest24751-21apt-get23:20:123
360299290,1cyclictest7626-21idleruntime-cro21:35:003
3598992927,1cyclictest28032-21cron21:10:012
359899290,28cyclictest13770-21apt-get00:05:142
3597992927,1cyclictest621-21dbus-daemon00:00:011
359799290,28cyclictest0-21swapper/123:45:121
359799290,1cyclictest26529-21cron22:15:001
3596992927,1cyclictest621-21dbus-daemon22:10:010
359699290,28cyclictest0-21swapper/022:30:010
359699290,28cyclictest0-21swapper/021:00:090
359699290,1cyclictest28873-21sendmail22:20:010
3602992828,0cyclictest0-21swapper/323:05:133
3602992828,0cyclictest0-21swapper/320:50:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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