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2025-12-26 - 08:10
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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 rackeslot8.osadl.org (updated Fri Dec 26, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4016567992522,1cyclictest0-21swapper/320:00:003
4016567992421,1cyclictest0-21swapper/323:35:003
4016567992311,8cyclictest40499662sleep319:30:243
4016567992219,1cyclictest0-21swapper/322:50:263
4016567992219,1cyclictest0-21swapper/322:50:253
4016567992219,1cyclictest0-21swapper/320:04:593
4016567992219,1cyclictest0-21swapper/300:19:593
4016567992118,1cyclictest0-21swapper/322:00:143
4016567992118,1cyclictest0-21swapper/319:15:013
4016567992116,3cyclictest180410-21sleep23:50:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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