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2026-05-26 - 01:16
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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 Mon May 25, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491670,20ptp4l15494-21df_inode08:35:150
134491630,8ptp4l0-21swapper/209:15:112
134491620,3ptp4l25314-21df_inode11:15:150
312552610,4sleep20-21swapper/212:35:272
134491600,4ptp4l0-21swapper/011:25:200
134491600,3ptp4l29199-21apt-get10:15:111
810699597,12cyclictest26784-21taskset11:16:313
810699586,11cyclictest5942-21taskset11:41:113
134491580,4ptp4l0-21swapper/211:08:122
134491580,4ptp4l0-21swapper/107:19:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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