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2026-04-24 - 22:02
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Fri Apr 24, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
759297996361,1cyclictest0-21swapper/107:45:411
759297996342,20cyclictest3686827-1kworker/1:0H08:30:001
759297996157,2cyclictest0-21swapper/109:50:141
759297996058,1cyclictest0-21swapper/109:04:291
759297996058,1cyclictest0-21swapper/108:11:391
759297996040,19cyclictest3686827-1kworker/1:0H07:15:001
759297996040,18cyclictest822342-21kworker/1:309:40:151
759297995957,1cyclictest0-21swapper/108:00:221
759297995943,15cyclictest831455-21kworker/1:109:55:121
759296995956,2cyclictest910756-21kworker/0:211:50:190
759297995843,14cyclictest862784-21kworker/1:210:30:291
759297995842,15cyclictest838149-21kworker/1:310:10:131
759297995842,15cyclictest786468-21kworker/1:008:38:001
759297995841,16cyclictest777016-21kworker/1:308:15:141
759297995841,15cyclictest3686827-1kworker/1:0H12:00:121
759297995838,19cyclictest781826-21kworker/1:108:20:131
75929799580,4cyclictest871735-21fschecks_time10:40:141
75929799580,4cyclictest871735-21fschecks_time10:40:141
759297995742,14cyclictest948767-21kworker/1:312:15:191
759297995742,14cyclictest902665-21kworker/1:011:22:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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