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2026-05-05 - 19:20
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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 10 highest latencies:
System rackeslot5.osadl.org (updated Tue May 05, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29696993332,1cyclictest22-21ksoftirqd/111:35:101
2970599300,29cyclictest29581-21cron10:50:003
2970199300,29cyclictest0-21swapper/210:05:002
29692993028,1cyclictest307-21systemd-journal09:35:010
2969299300,29cyclictest4526-21cron11:05:010
2970599291,0cyclictest0-21swapper/312:35:123
2970599290,28cyclictest0-21swapper/307:55:153
2970599290,28cyclictest0-21swapper/307:50:123
29701992927,1cyclictest0-21swapper/210:15:012
29701992926,3cyclictest0-21swapper/211:50:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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