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2025-11-21 - 14:56
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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 10 highest latencies:
System rack8slot4.osadl.org (updated Fri Nov 21, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2309922221182,25sleep30-21swapper/307:05:503
2331502220186,21sleep20-21swapper/207:09:022
2309962218188,19sleep70-21swapper/707:05:547
2331222217187,19sleep10-21swapper/107:08:371
2330942217188,18sleep00-21swapper/007:08:120
2330902212179,21sleep50-21swapper/507:08:095
2309682212158,18sleep60-21swapper/607:05:296
2330782210183,17sleep40-21swapper/407:08:004
23343999320,31cyclictest0-21swapper/712:15:007
23343999310,0cyclictest0-21swapper/709:50:567
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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