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2026-01-08 - 09:41
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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 rackcslot8.osadl.org (updated Thu Jan 08, 2026 00:48:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7409919852,82cyclictest0-21swapper/121:11:181
9449917232,83cyclictest0-21swapper/3122:15:2125
9449917230,141cyclictest0-21swapper/3120:55:1425
8349916932,129cyclictest0-21swapper/822:28:3930
8459916848,78cyclictest0-21swapper/1123:20:143
838991682,107cyclictest0-21swapper/923:45:1331
8879916625,95cyclictest0-21swapper/1922:44:3211
8349916428,134cyclictest0-21swapper/820:50:2130
838991633,127cyclictest0-21swapper/922:39:0331
8089916031,68cyclictest0-21swapper/619:45:2128
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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