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2025-12-19 - 04:31
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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 rackcslot8.osadl.org (updated Fri Dec 19, 2025 00:47:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
330891269260,7phc2sys0-21swapper/219:07:5212
330891269260,7phc2sys0-21swapper/219:07:5212
192782159151,6sleep30-21swapper/319:06:0223
192782159151,6sleep30-21swapper/319:06:0123
208049914230,24cyclictest0-21swapper/3119:50:3425
20703991360,84cyclictest0-21swapper/1623:55:238
20703991360,84cyclictest0-21swapper/1623:55:238
206559913656,53cyclictest0-21swapper/520:02:0427
206769913451,62cyclictest0-21swapper/1000:18:252
206769913451,62cyclictest0-21swapper/1000:18:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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