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2026-05-01 - 02:40
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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 Fri May 01, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6786102229169,18sleep70-21swapper/719:07:387
6786342216157,19sleep20-21swapper/219:07:582
6785642216161,20sleep00-21swapper/019:06:590
6786222212184,19sleep10-21swapper/119:07:491
6784672212163,38sleep60-21swapper/619:05:356
6787382210182,18sleep50-21swapper/519:09:295
6785982208146,18sleep40-21swapper/419:07:274
6786802206178,19sleep30-21swapper/319:08:393
678981995151,0cyclictest0-21swapper/023:40:010
678994994443,1cyclictest0-21swapper/523:40:015
678988994140,1cyclictest0-21swapper/323:40:003
67898899340,5cyclictest777566-21ls22:05:013
67898699330,31cyclictest690714-21cron19:30:012
67898499332,30cyclictest856-21dbus-daemon19:55:011
67898699320,31cyclictest374-21systemd-journal23:20:022
678997993127,3cyclictest1134-21gmain19:45:016
678988993131,0cyclictest0-21swapper/323:05:193
678988993128,2cyclictest721422-21apt-get20:25:013
67898499310,30cyclictest699523-21apt-get19:45:161
678997993028,1cyclictest730259-21apt-get20:40:146
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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