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2026-06-20 - 01:58
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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 Jun 19, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2008299300,29cyclictest19745-21apt-get10:35:103
2007899300,29cyclictest7160-21cron10:10:002
20071993028,1cyclictest0-21swapper/010:00:000
2007199301,1cyclictest621-21dbus-daemon10:45:010
2008299290,28cyclictest13906-21awk12:40:013
2008299290,1cyclictest0-21swapper/308:45:113
2007899294,25cyclictest0-21swapper/212:38:282
20078992928,1cyclictest0-21swapper/209:25:112
20078992927,1cyclictest0-21swapper/208:55:112
2007499290,28cyclictest0-21swapper/111:05:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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