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2025-11-07 - 07:07
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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 07, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19535402226189,24sleep40-21swapper/419:06:444
19537032225195,18sleep50-21swapper/519:09:025
19537082224171,17sleep10-21swapper/119:09:061
19537402223190,21sleep30-21swapper/319:09:323
19536032223190,21sleep20-21swapper/219:07:382
19537352218184,21sleep70-21swapper/719:09:287
19536072217186,20sleep60-21swapper/619:07:436
19515432213185,18sleep00-21swapper/019:05:520
1953975993428,2cyclictest0-21swapper/321:55:013
195396699330,30cyclictest3820478-21systemd-journal21:55:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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