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2025-08-30 - 01:30
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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 Fri Aug 29, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3619286997539,34cyclictest3614929-21kworker/1:107:25:001
3619286997242,28cyclictest3711590-21kworker/1:211:50:141
3619286997241,29cyclictest2365825-1kworker/1:0H07:14:411
3619286997241,29cyclictest2365825-1kworker/1:0H07:14:401
3619286996840,27cyclictest3696657-21kworker/1:111:10:131
3619286996742,24cyclictest3701166-21kworker/1:011:25:021
3619286996738,28cyclictest3701166-21kworker/1:011:20:141
3619286996732,32cyclictest2365825-1kworker/1:0H07:45:151
3619286996637,28cyclictest3614929-21kworker/1:108:20:171
361928699661,63cyclictest0-21swapper/111:58:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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