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2026-05-22 - 00:53
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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
Characteristics of the 10 highest latencies:
System rack5slot0.osadl.org (updated Thu May 21, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
331621280,1sleep20-21swapper/211:08:352
2601321180,3sleep226014-21id12:07:032
152821090,3sleep13134899cyclictest11:19:491
984821060,1sleep041ktimersoftd/011:35:140
182142960,2sleep118212-21bash12:09:461
293792910,2sleep20-21swapper/210:46:112
3099028633,49sleep10-21swapper/107:08:541
3084428532,49sleep30-21swapper/307:07:043
101282850,1sleep30-21swapper/307:35:013
276992840,2sleep20-21swapper/209:14:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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