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2026-08-12 - 20:26
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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 rackfslot7.osadl.org (updated Wed Aug 12, 2026 12:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
981030995419,35cyclictest0-21swapper/308:33:213
981030995419,34cyclictest0-21swapper/310:29:453
981030995419,34cyclictest0-21swapper/309:07:453
981030995414,39cyclictest0-21swapper/311:33:533
981030995414,39cyclictest0-21swapper/309:04:133
981030995335,18cyclictest981026-21cyclictest07:32:533
981030995334,19cyclictest511ktimers/309:40:593
981030995314,19cyclictest0-21swapper/312:04:593
981030995314,19cyclictest0-21swapper/311:17:453
981030995313,39cyclictest1030809-21/usr/sbin/munin08:40:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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