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2025-12-16 - 19:21
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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 Tue Dec 16, 2025 12:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
882921999011,60cyclictest1036954-21/usr/sbin/munin11:40:224
88292199823,59cyclictest899956-21munin-run07:40:014
882921997335,19cyclictest912518-21cat08:00:174
882921997335,19cyclictest1019042-21users11:05:264
882921997133,38cyclictest0-21swapper/411:29:134
882921997132,39cyclictest0-21swapper/410:14:574
882921997031,39cyclictest0-21swapper/412:05:064
882921996930,39cyclictest0-21swapper/410:26:334
882921996930,39cyclictest0-21swapper/409:02:334
882921996830,19cyclictest1016919-21sed11:05:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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