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2026-06-04 - 05:51
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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 Thu Jun 04, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8255312227167,19sleep20-21swapper/219:05:522
8256932216165,42sleep70-21swapper/719:08:157
8255192216180,24sleep00-21swapper/019:05:420
8257302214184,19sleep60-21swapper/619:08:456
8256242213184,19sleep30-21swapper/319:07:143
8257252211182,19sleep10-21swapper/119:08:411
8256342206177,19sleep40-21swapper/419:07:234
8255152199170,19sleep50-21swapper/519:05:395
82602299570,56cyclictest881279-21921:35:012
826025994848,0cyclictest0-21swapper/421:35:014
82603499330,32cyclictest0-21swapper/722:00:097
826023993330,3cyclictest850706-21cron20:15:013
82602399330,30cyclictest0-21swapper/319:15:023
82603499320,31cyclictest872903-21sqv21:20:017
82603099320,31cyclictest81-21ksoftirqd/622:20:096
826025993230,1cyclictest0-21swapper/422:40:014
82602399320,31cyclictest914619-21cron22:35:013
82603499310,31cyclictest833774-21919:30:027
82603499310,30cyclictest951342-21apt-get23:40:087
826028993128,2cyclictest878446-21cron21:30:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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