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2026-05-15 - 17:13
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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 Fri May 15, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1601599300,29cyclictest25561-21apt-get07:30:133
16010993028,1cyclictest0-21swapper/210:40:012
1601099300,29cyclictest10376-21apt-get10:25:112
16009993028,1cyclictest23827-21idleruntime-cro09:45:001
16009993028,1cyclictest0-21swapper/110:30:011
1600999300,29cyclictest19715-21cron10:45:001
1600999300,1cyclictest307-21systemd-journal08:35:011
1601599290,28cyclictest19185-21perf09:35:013
1601599290,28cyclictest0-21swapper/310:15:003
1601599290,1cyclictest649-21gdbus09:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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