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2026-04-28 - 10:15
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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 Apr 28, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2799221380,3sleep10-21swapper/123:15:211
134491680,4ptp4l0-21swapper/223:30:152
230562670,4sleep20-21swapper/223:05:192
134491650,3ptp4l22285-21iostat_ios19:35:190
134491600,16ptp4l0-21swapper/020:15:160
134491600,16ptp4l0-21swapper/020:15:160
134491580,3ptp4l3554-21apt-get21:15:140
134491580,3ptp4l0-21swapper/200:25:272
134491580,3ptp4l0-21swapper/119:30:231
134491580,3ptp4l0-21swapper/022:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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