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2026-06-26 - 21:05
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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 Fri Jun 26, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3103821400,5chrt31039-21cpu11:40:160
308769911568,33cyclictest26-21ksoftirqd/111:40:101
308769911156,35cyclictest26-21ksoftirqd/111:50:101
308769910960,31cyclictest26-21ksoftirqd/110:35:131
30876999710,62cyclictest0-21swapper/110:10:111
30876999615,55cyclictest0-21swapper/108:05:141
3040829525,24sleep00-21swapper/007:07:050
30876999440,28cyclictest26-21ksoftirqd/109:15:121
30876999416,55cyclictest0-21swapper/107:55:151
30876999311,58cyclictest0-21swapper/109:50:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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