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2025-12-24 - 11:20
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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 rack5slot2.osadl.org (updated Wed Dec 24, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291202203188,11sleep10-21swapper/119:06:501
291292185168,13sleep00-21swapper/019:06:570
292382181165,12sleep30-21swapper/319:08:203
293462175158,12sleep20-21swapper/219:09:442
295549981,3cyclictest25163-21awk21:10:000
295619962,2cyclictest0-21swapper/319:45:173
295619961,3cyclictest0-21swapper/300:35:103
295579960,5cyclictest0-21swapper/221:00:172
295549961,1cyclictest0-21swapper/022:50:110
295549960,3cyclictest7580-21munin-run21:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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