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2025-09-15 - 20:08
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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 Mon Sep 15, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8322802233175,20sleep30-21swapper/307:09:453
8321112231174,44sleep20-21swapper/207:07:192
8320532227171,18sleep00-21swapper/007:06:290
8321152220189,20sleep60-21swapper/607:07:236
8322952217183,22sleep70-21swapper/707:09:577
8321962212183,18sleep40-21swapper/407:08:334
8321882212182,19sleep50-21swapper/507:08:265
8300282211177,22sleep10-21swapper/107:05:171
83248699331,31cyclictest0-21swapper/007:30:010
832496993228,3cyclictest958472-21apt11:00:003
83250799310,28cyclictest967050-21apt-get11:16:076
83249899310,3cyclictest991426-21packagekitd12:00:014
83249399310,29cyclictest997224-21debian-sa112:15:012
83248699310,30cyclictest0-21swapper/007:36:080
83251199300,29cyclictest835076-21apt07:15:017
83251199300,29cyclictest0-21swapper/711:26:077
832496993028,1cyclictest893467-21apt-get09:01:083
83249699300,29cyclictest990822-21munin-run12:00:013
83249699300,29cyclictest0-21swapper/311:46:073
83249699300,1cyclictest0-21swapper/308:35:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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