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2026-09-04 - 18:12
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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 Fri Sep 04, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1124518997334,38cyclictest0-21swapper/408:35:014
1124518997330,39cyclictest1278813-21cut11:50:014
1124518997316,38cyclictest1134257-21sed07:25:184
1124518997314,20cyclictest1187856-21cut09:05:014
1124518997314,19cyclictest0-21swapper/407:19:534
1124518997215,38cyclictest1216727-21latency09:55:174
1124518997112,20cyclictest1287285-21unin-run12:05:004
1124518997032,19cyclictest0-21swapper/407:45:394
1124518996930,39cyclictest0-21swapper/411:38:554
1124515996748,19cyclictest0-21swapper/109:10:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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