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2026-05-08 - 19:45
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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 20 highest latencies:
System rack8slot4.osadl.org (updated Fri May 08, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6362612235169,20sleep60-21swapper/607:06:016
6364132233175,19sleep10-21swapper/107:08:141
6361212233169,19sleep40-21swapper/407:05:284
6364682232173,48sleep00-21swapper/007:09:020
6363432229172,46sleep50-21swapper/507:07:145
6363922214185,18sleep70-21swapper/707:07:557
6363322209180,19sleep30-21swapper/307:07:033
6362752209181,19sleep20-21swapper/207:06:142
636753993328,4cyclictest0-21swapper/310:35:013
63675399330,4cyclictest668128-21cron08:05:023
636757993227,4cyclictest726680-21idleruntime-cro09:50:015
63675399320,31cyclictest813539-21apt-get12:25:133
63675399320,31cyclictest713156-21apt-get09:25:153
63674799320,31cyclictest760155-21cron10:50:011
636744993227,4cyclictest687828-21cat08:40:000
63674499320,31cyclictest774509-21apt-get11:15:140
63675399310,3cyclictest671343-21apt-get08:10:153
63675399310,30cyclictest0-21swapper/309:00:133
636744993127,3cyclictest646186-21apt-get07:25:150
636761993027,2cyclictest777313-21apt-get11:20:157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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