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2026-03-26 - 16:13
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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 rack1slot8.osadl.org (updated Thu Mar 26, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
326849919715,1952cyclictest0-21swapper/008:10:180
326849917861714,38cyclictest923-21irqstats07:10:160
32685995035,480cyclictest0-21swapper/107:10:171
326202444424,13sleep10-21swapper/107:09:411
3268599411375,21cyclictest22852-21strings08:10:191
32685999413,65cyclictest0-21swapper/109:24:591
32685999413,65cyclictest0-21swapper/109:24:591
32685999316,56cyclictest0-21swapper/109:43:591
32684999374,14cyclictest0-21swapper/010:21:590
32685998811,61cyclictest0-21swapper/111:08:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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