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2026-08-17 - 19:12
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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 rack8slot4.osadl.org (updated Mon Aug 17, 2026 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33123602230170,20sleep00-21swapper/007:09:560
33100762220191,19sleep20-21swapper/207:06:042
33123162219190,19sleep30-21swapper/307:09:183
33122252218189,19sleep40-21swapper/407:07:584
33123472215186,19sleep70-21swapper/707:09:477
33122812215159,18sleep60-21swapper/607:08:496
33122762212181,20sleep10-21swapper/107:08:441
33100382205180,15sleep50-21swapper/507:05:355
331260499350,34cyclictest382-21systemd-journal09:15:017
331260499330,32cyclictest0-21swapper/710:55:017
331260499330,1cyclictest0-21swapper/709:26:227
331260499330,1cyclictest0-21swapper/709:05:047
331259599330,28cyclictest0-21swapper/410:46:214
331260499320,28cyclictest0-21swapper/709:16:227
3312591993231,1cyclictest0-21swapper/311:20:013
331259199320,31cyclictest1-21systemd12:15:013
331260499310,3cyclictest3494246-21cron12:35:017
331260499310,30cyclictest0-21swapper/707:51:227
331260099310,3cyclictest3321544-21cron07:25:015
3312595993125,6cyclictest3385630-21cron09:20:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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