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2026-04-26 - 00:36
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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 Apr 25, 2026 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30937802240178,19sleep60-21swapper/607:06:046
30938522232167,19sleep40-21swapper/407:07:064
30939292226166,19sleep70-21swapper/707:08:147
30939992222165,46sleep20-21swapper/207:09:132
30938302217158,19sleep00-21swapper/007:06:460
30940452212183,19sleep10-21swapper/107:09:531
30938602212185,18sleep30-21swapper/307:07:133
30938062207177,20sleep50-21swapper/507:06:265
31973322400,1sleep7881rcuc/710:10:217
309426899350,34cyclictest3178555-21cron09:40:003
309426899340,28cyclictest0-21swapper/308:45:143
309426199340,1cyclictest0-21swapper/010:15:020
3094278993328,5cyclictest3179011-21apt-get09:40:147
3094278993227,4cyclictest3226369-21apt-get11:05:147
3094277993227,4cyclictest3267714-21cron12:20:016
309427499320,31cyclictest3254001-21latency_hist11:55:015
309426899320,31cyclictest0-21swapper/309:40:133
309426899320,28cyclictest3167834-21apt-get09:20:123
309426899320,1cyclictest0-21swapper/312:05:123
309426899320,1cyclictest0-21swapper/311:05:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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