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2026-06-11 - 17:24
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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 Thu Jun 11, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9509993028,1cyclictest21088-21cron07:35:013
9509993028,1cyclictest0-21swapper/312:30:013
9509993028,1cyclictest0-21swapper/307:45:013
9509992928,1cyclictest23697-21cron12:15:013
9509992927,1cyclictest26477-21perf08:55:003
950999290,28cyclictest0-21swapper/312:30:113
950999290,28cyclictest0-21swapper/311:05:133
9505992927,1cyclictest621-21dbus-daemon12:05:012
950299290,28cyclictest0-21swapper/110:35:121
950299290,28cyclictest0-21swapper/110:25:111
950299290,1cyclictest30591-21munin-run07:55:011
9499992927,1cyclictest0-21swapper/009:15:010
9509992828,0cyclictest15322-21apt-get09:40:023
9509992826,1cyclictest17030-21apt-get12:00:133
950999280,27cyclictest0-21swapper/310:10:123
9505992828,0cyclictest0-21swapper/211:05:132
9505992828,0cyclictest0-21swapper/208:25:102
9505992828,0cyclictest0-21swapper/207:25:112
9505992827,1cyclictest16730-21apt-get10:50:122
950599280,27cyclictest0-21swapper/209:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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