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2026-06-19 - 13:12
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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 19, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283839911711,24cyclictest0-21swapper/020:20:120
283839911248,31cyclictest0-21swapper/021:30:130
28383991096,81cyclictest0-21swapper/022:00:110
357621050,7chrt3578-21aten2.4_r3power19:30:151
28383991057,74cyclictest0-21swapper/022:45:120
28383991006,76cyclictest0-21swapper/023:50:250
2800229830,56sleep10-21swapper/119:07:551
2838399966,22cyclictest0-21swapper/020:05:130
2838399966,19cyclictest0-21swapper/023:45:150
28385999412,67cyclictest0-21swapper/122:45:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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