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2026-01-04 - 05:57
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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 rackeslot8.osadl.org (updated Sun Jan 04, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
403542121030,1sleep20-21swapper/221:55:142
40471912890,1sleep10-21swapper/122:05:151
40471912890,1sleep10-21swapper/122:05:141
3819988993836,1cyclictest0-21swapper/322:50:013
3819988992825,1cyclictest0-21swapper/300:10:153
3819988992421,1cyclictest0-21swapper/320:05:013
3819988992321,1cyclictest0-21swapper/321:45:143
3819988992320,1cyclictest0-21swapper/323:20:003
3819988992219,1cyclictest0-21swapper/320:45:013
3819988992118,1cyclictest0-21swapper/321:35:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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