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2026-06-30 - 16:18
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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
Characteristics of the 10 highest latencies:
System rackdslot1.osadl.org (updated Tue Jun 30, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2064521340,3sleep20-21swapper/211:00:212
966099643,17cyclictest0-21swapper/312:20:253
966099632,16cyclictest0-21swapper/311:40:173
966099623,17cyclictest0-21swapper/310:20:013
194262620,7sleep1965899cyclictest11:00:001
134491620,4ptp4l10073-21apt-get08:20:131
966099617,11cyclictest0-21swapper/310:55:013
134491610,4ptp4l0-21swapper/007:25:230
134491600,4ptp4l32192-21meminfo10:15:210
134491600,4ptp4l10258-21iostat_ios07:10:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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