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2026-06-20 - 01:09
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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 Jun 19, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32965242235176,19sleep10-21swapper/107:08:361
32963812230171,19sleep00-21swapper/007:06:340
32964522229167,19sleep60-21swapper/607:07:366
32964422224168,44sleep50-21swapper/507:07:275
32964532222165,45sleep70-21swapper/707:07:377
32963662216187,19sleep30-21swapper/307:06:213
32964842210183,17sleep20-21swapper/207:08:052
32964772207176,20sleep40-21swapper/407:07:594
34278222520,0sleep40-21swapper/411:00:144
329683099320,27cyclictest0-21swapper/412:15:054
329682199320,31cyclictest3456227-21cron11:55:011
329681999320,31cyclictest3314128-21cron07:40:010
3296835993126,4cyclictest3358771-21true09:00:016
329683299310,30cyclictest3328057-21cron08:05:015
329683099310,0cyclictest0-21swapper/410:50:044
329682199310,28cyclictest0-21swapper/112:20:041
329681999310,30cyclictest3470645-21apt-get12:20:050
329683699300,29cyclictest0-21swapper/709:25:047
3296835993028,1cyclictest0-21swapper/608:45:046
329683599300,29cyclictest0-21swapper/612:25:036
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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