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2025-12-17 - 17:03
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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 Wed Dec 17, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5600092244189,44sleep00-21swapper/007:06:380
5600202237182,17sleep20-21swapper/207:06:472
5600122235176,19sleep30-21swapper/307:06:403
5621212229195,22sleep70-21swapper/707:09:107
5620752221191,19sleep60-21swapper/607:08:296
5621272216183,22sleep40-21swapper/407:09:144
5601032215161,18sleep10-21swapper/107:07:591
5599192215185,19sleep50-21swapper/507:05:235
56242699340,29cyclictest663215-21idleruntime-cro10:15:025
56242699330,32cyclictest0-21swapper/510:43:155
562426993227,4cyclictest725421-21sh12:10:005
56241699320,31cyclictest633275-21apt09:20:022
56241699320,31cyclictest633275-21apt09:20:012
56241199320,31cyclictest703882-21turbostat.cron11:30:010
562426993124,3cyclictest0-21swapper/511:18:145
56242399310,29cyclictest606080-21cron08:30:004
56243299300,29cyclictest0-21swapper/707:38:157
562428993028,1cyclictest672206-21apt-get10:33:146
56242899300,29cyclictest577088-21http07:38:166
56242399300,29cyclictest700-21rs:main4
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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