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2026-06-09 - 14:17
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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 20 highest latencies:
System rack8slot4.osadl.org (updated Tue Jun 09, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39853952234169,21sleep30-21swapper/319:08:563
39852152230170,18sleep10-21swapper/119:06:201
39852452229167,52sleep40-21swapper/419:06:484
39854262226165,19sleep50-21swapper/519:09:225
39851722211183,18sleep60-21swapper/619:05:456
39851572211182,19sleep00-21swapper/019:05:300
39851682208179,19sleep20-21swapper/219:05:412
39852302205176,19sleep70-21swapper/719:06:337
398568899340,28cyclictest0-21swapper/423:50:064
398568899340,28cyclictest0-21swapper/419:30:074
398569599330,32cyclictest4069914-21cron21:40:017
3985688993327,1cyclictest0-21swapper/419:30:014
398568599330,3cyclictest290-21plymouthd20:55:013
398568399330,32cyclictest279850-21systemd-journal21:35:012
398569599320,3cyclictest4097793-21cron22:30:017
398569599320,3cyclictest4097793-21cron22:30:017
398569599320,0cyclictest0-21swapper/719:25:087
398568599320,31cyclictest279850-21systemd-journal23:00:013
398567999320,31cyclictest3988338-21cron19:15:011
398567799320,1cyclictest0-21swapper/000:04:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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