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2026-09-19 - 22:45
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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 Sat Sep 19, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13548382227165,18sleep10-21swapper/107:05:241
13571792221161,19sleep30-21swapper/307:10:003
13548592215186,19sleep20-21swapper/207:05:412
13571702209178,20sleep50-21swapper/507:09:555
13548912209180,19sleep40-21swapper/407:06:084
13569512208178,20sleep00-21swapper/007:06:440
13570242206177,19sleep70-21swapper/707:07:477
13570232204176,18sleep60-21swapper/607:07:466
135739299330,32cyclictest1464159-21cat10:20:017
1357392993227,4cyclictest1491831-21cron11:10:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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