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2026-06-05 - 09:03
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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 Fri Jun 05, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39777952243189,44sleep10-21swapper/119:07:001
39779122240173,20sleep60-21swapper/619:08:426
39777462232173,19sleep20-21swapper/219:06:212
39779552212183,19sleep40-21swapper/419:09:204
39777132212184,18sleep50-21swapper/519:05:515
39777112212182,20sleep30-21swapper/319:05:493
39778972207174,21sleep00-21swapper/019:08:270
39778192202170,20sleep70-21swapper/719:07:217
3978211994122,18cyclictest0-21swapper/321:20:013
397821199370,32cyclictest4056844-21cron21:30:013
3978211993323,8cyclictest279850-21systemd-journal19:15:023
3978222993227,4cyclictest3990440-21http19:30:087
397822299320,4cyclictest4154855-21http00:25:107
3978217993230,1cyclictest964-21in:imuxsock21:00:016
3978211993228,4cyclictest0-21swapper/322:50:013
397820799320,31cyclictest4110091-21sed23:05:022
3978202993228,3cyclictest1-21systemd20:20:010
397822299310,3cyclictest4115402-21cron23:15:017
397821799310,3cyclictest4162746-21cron00:40:016
3978205993127,3cyclictest1-21systemd23:25:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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