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2026-03-21 - 12:16
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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 Sat Mar 21, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2846642224167,17sleep40-21swapper/419:09:384
2825612221170,40sleep20-21swapper/219:07:182
2825172221166,18sleep30-21swapper/319:06:383
2846452220185,22sleep60-21swapper/619:09:246
2825842219187,21sleep50-21swapper/519:07:385
2825412219188,20sleep00-21swapper/019:07:010
2825012214180,21sleep70-21swapper/719:06:277
2846312210180,19sleep10-21swapper/119:09:111
43331321180,0sleep20-21swapper/223:43:052
28510299344,29cyclictest0-21swapper/620:40:006
285102993231,1cyclictest0-21swapper/600:10:026
28509299320,30cyclictest453758-21idleruntime-cro00:20:014
28509299320,28cyclictest0-21swapper/421:23:014
28509099320,31cyclictest297058-21gdbus19:30:013
28510599311,29cyclictest297130-21cut19:30:027
28509299310,28cyclictest0-21swapper/422:20:014
28509299310,27cyclictest0-21swapper/400:13:024
28508799310,30cyclictest331816-21turbostat.cron20:35:002
285084993127,3cyclictest442731-21dump-pmu-power00:00:011
28508499310,30cyclictest0-21swapper/119:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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