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2026-06-14 - 17:37
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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 rack3slot6.osadl.org (updated Sun Jun 14, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30312214985,38sleep10-21swapper/107:05:161
3142829914,37sleep00-21swapper/007:05:510
31997998814,61cyclictest0-21swapper/111:40:131
31997998813,62cyclictest0-21swapper/107:30:131
31997998813,60cyclictest0-21swapper/108:05:151
31997998713,58cyclictest0-21swapper/107:10:121
3199799867,59cyclictest16546-21apt-get12:25:101
31997998514,60cyclictest0-21swapper/108:35:121
3199399856,69cyclictest0-21swapper/012:25:100
31997998413,55cyclictest0-21swapper/108:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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