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2025-11-14 - 08:02
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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 rack8slot4.osadl.org (updated Fri Nov 14, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2827112232176,18sleep00-21swapper/019:09:100
2827722228168,48sleep10-21swapper/119:10:001
2826342225169,18sleep20-21swapper/219:08:082
2827452222190,20sleep40-21swapper/419:09:394
2826292220164,18sleep60-21swapper/619:08:046
2805362217182,22sleep70-21swapper/719:05:487
2825362216186,19sleep50-21swapper/519:06:425
2825432215185,19sleep30-21swapper/319:06:483
282962993938,1cyclictest0-21swapper/021:05:580
282974993433,1cyclictest0-21swapper/400:00:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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