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2026-07-03 - 07:15
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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 Fri Jul 03, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25306822232171,19sleep20-21swapper/219:05:482
25307332229167,19sleep60-21swapper/619:06:336
25308342213184,19sleep30-21swapper/319:07:583
25308222212181,21sleep00-21swapper/019:07:470
25308002211183,18sleep50-21swapper/519:07:285
25307462211183,19sleep10-21swapper/119:06:441
25308942209180,19sleep70-21swapper/719:08:517
25308442204176,19sleep40-21swapper/419:08:084
253122899340,32cyclictest2614127-21expr21:40:014
2531234993231,1cyclictest17850irq/4-ttyS019:35:017
253123399320,4cyclictest2650162-21sed22:45:016
253123399320,31cyclictest2538623-21idleruntime-cro19:25:016
2531230993227,5cyclictest0-21swapper/519:15:015
253122899320,31cyclictest2633374-21latency_hist22:15:024
2531224993227,4cyclictest1-21systemd19:55:013
253122199320,31cyclictest2692093-21latency_hist00:00:011
2531218993227,5cyclictest0-21swapper/019:45:010
253121899320,31cyclictest279850-21systemd-journal23:55:010
253121899320,0cyclictest0-21swapper/020:50:010
2531234993127,3cyclictest2599844-21true21:15:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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