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2026-05-13 - 22:30
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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 Wed May 13, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2747656998139,39cyclictest2759089-21kworker/1:108:00:151
2747656997441,31cyclictest2772642-21kworker/1:108:30:121
2747656997239,31cyclictest2880141-21kworker/1:111:00:141
2747656997143,26cyclictest2190289-1kworker/1:1H09:05:011
2747656997035,34cyclictest2969940-21kworker/1:112:30:151
2747656996937,30cyclictest2854451-21kworker/1:110:25:151
2747656996763,2cyclictest0-21swapper/107:45:291
274765699670,64cyclictest0-21swapper/107:56:201
2747656996661,2cyclictest0-21swapper/111:50:261
2747656996441,21cyclictest2190289-1kworker/1:1H08:09:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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