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2025-12-21 - 09:15
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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 rack5slot3.osadl.org (updated Sun Dec 21, 2025 00:50:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
623928836,47sleep50-21swapper/519:05:385
636928133,43sleep10-21swapper/119:07:271
648027944,30sleep20-21swapper/219:09:032
638927744,29sleep30-21swapper/319:07:443
625927440,29sleep70-21swapper/719:05:557
624927340,29sleep60-21swapper/619:05:466
636327238,30sleep40-21swapper/419:07:224
632827237,30sleep00-21swapper/019:06:530
219852500,0sleep70-21swapper/721:20:157
6978994646,0cyclictest0-21swapper/421:15:144
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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