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2025-11-28 - 18:10
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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 28, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27725312231171,47sleep00-21swapper/007:08:090
27703802228170,19sleep30-21swapper/307:05:073
27703922223167,18sleep40-21swapper/407:05:164
27704382222166,17sleep10-21swapper/107:05:531
27726522216184,20sleep70-21swapper/707:09:537
27725182214186,18sleep50-21swapper/507:07:585
27726182213183,19sleep20-21swapper/207:09:242
27726412206178,18sleep60-21swapper/607:09:446
2772852993333,0cyclictest0-21swapper/010:25:000
277286899320,28cyclictest2863370-21apt-get09:55:575
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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