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2026-05-07 - 18:35
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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 rackbslot7.osadl.org (updated Thu May 07, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27649213010,37sleep11-21systemd07:01:411
2630321180,8sleep10-21swapper/111:27:011
2630321180,8sleep10-21swapper/111:27:011
277669911737,12cyclictest0-21swapper/010:12:110
277669911653,57cyclictest3048-21kworker/u18:2+events_unbound08:16:390
98021150,5sleep10-21swapper/111:38:081
277669911540,10cyclictest0-21swapper/010:02:110
277669911434,22cyclictest0-21swapper/012:21:400
277669911355,53cyclictest27754-21cyclictest08:32:390
27766991113,56cyclictest8120-21ssh11:51:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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