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2025-11-17 - 12:46
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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 Mon Nov 17, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19150012235180,44sleep00-21swapper/019:05:020
19170802234181,17sleep30-21swapper/319:07:063
19172752217186,20sleep50-21swapper/519:09:495
19170652215181,22sleep60-21swapper/619:06:536
19150322215186,19sleep40-21swapper/419:05:304
19171662213185,18sleep10-21swapper/119:08:161
19171452213185,18sleep70-21swapper/719:07:587
19150502206173,21sleep20-21swapper/219:05:442
191750099322,29cyclictest2002628-21sh21:45:015
191749099320,2cyclictest3820478-21systemd-journal22:30:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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