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2026-04-27 - 08:30
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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 rackeslot3.osadl.org (updated Mon Apr 27, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26027996631,17cyclictest27901-21kworker/1:119:35:151
26027996541,22cyclictest168160-21kworker/1:123:20:161
2602799640,1cyclictest0-21swapper/121:38:381
2602799630,62cyclictest0-21swapper/100:24:481
26027996240,21cyclictest60868-21kworker/1:121:00:141
2602799621,59cyclictest0-21swapper/119:25:131
26027996144,16cyclictest37451-21kworker/1:319:50:011
26027996143,17cyclictest153319-21kworker/1:123:05:021
26027996130,29cyclictest86372-21kworker/1:221:50:011
26027996058,1cyclictest0-21swapper/120:01:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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