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2026-07-04 - 23:32
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackfslot7.osadl.org (updated Sat Jul 04, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227688999234,38cyclictest359643-21cat11:05:244
227688997519,17cyclictest0-21swapper/409:36:104
227688997436,19cyclictest362-21jbd2/sda2-811:20:054
227688997434,39cyclictest221428-21kworker/0:107:11:294
227688997335,37cyclictest1086-21runrttasks12:00:504
227688997313,59cyclictest0-21swapper/411:12:594
227688997214,39cyclictest273087-21sed08:30:174
227688997133,19cyclictest354219-21cat10:55:234
227688997133,18cyclictest0-21swapper/408:25:124
227688997133,18cyclictest0-21swapper/407:40:334
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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