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2026-09-07 - 01:49
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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 rack3slot6.osadl.org (updated Mon Sep 07, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1727929719,32sleep10-21swapper/119:09:091
1749399896,68cyclictest25385-21apt-get19:30:160
17493998613,58cyclictest0-21swapper/023:05:140
17498998521,35cyclictest0-21swapper/121:10:221
17498998514,43cyclictest0-21swapper/123:00:251
17493998514,57cyclictest0-21swapper/021:30:160
1749399847,64cyclictest17581-21apt-get19:10:130
17493998415,54cyclictest0-21swapper/021:45:140
17493998414,56cyclictest0-21swapper/023:00:140
17493998414,55cyclictest0-21swapper/000:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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