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2026-05-15 - 19:38
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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 Fri May 15, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491620,17ptp4l0-21swapper/008:25:170
134491600,3ptp4l0-21swapper/308:20:243
134491580,4ptp4l0-21swapper/112:35:151
134491570,3ptp4l26802-21apt-get07:15:130
134491570,3ptp4l1341-21ls12:05:210
134491560,4ptp4l0-21swapper/111:00:141
134491560,3ptp4l0-21swapper/112:00:131
134491560,3ptp4l0-21swapper/109:45:191
134491550,4ptp4l28541-21processes10:45:240
134491550,4ptp4l0-21swapper/011:23:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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