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2026-07-28 - 00:40
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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 Jul 27, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1313721490,4sleep113142-21latency10:30:201
1275421400,6sleep11529999cyclictest09:20:191
305402740,4sleep21530099cyclictest07:40:232
291572700,3sleep129023-21irqrtprio11:05:191
134491700,5ptp4l0-21swapper/010:20:180
134491660,23ptp4l3932-21awk10:10:240
15301996531,9cyclictest41-21ksoftirqd/310:05:173
1530199642,29cyclictest0-21swapper/309:00:223
134491640,4ptp4l13569-21apt-get08:15:010
1529999624,15cyclictest2346-21ntpd08:50:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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