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2026-09-29 - 01:34
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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 Sep 28, 2026 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9094672227170,46sleep20-21swapper/207:07:572
9072552224192,22sleep50-21swapper/507:05:105
9094722223164,18sleep70-21swapper/707:08:017
9094932218190,19sleep10-21swapper/107:08:201
9073152210160,41sleep00-21swapper/007:06:020
9072742206178,19sleep60-21swapper/607:05:266
9095512205175,20sleep30-21swapper/307:09:103
9094602204176,19sleep40-21swapper/407:07:514
909831995351,1cyclictest0-21swapper/709:41:547
909820993737,0cyclictest0-21swapper/309:41:543
90982099330,32cyclictest949529-21latency_hist08:20:003
90981899330,24cyclictest0-21swapper/209:26:522
90982899320,31cyclictest373-21systemd-journal07:37:006
909818993227,4cyclictest932760-21cron07:50:012
90981899320,31cyclictest1094568-21unix_chkpwd12:40:012
90981899320,31cyclictest0-21swapper/207:20:052
90981899320,31cyclictest0-21swapper/207:20:022
90983199310,30cyclictest980275-21cron09:15:017
90982899310,30cyclictest966860-21apt-get08:51:516
90982899310,30cyclictest955693-21apt-get08:31:546
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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