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2025-12-01 - 08:51
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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 Dec 01, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11065999714,76cyclictest0-21swapper/120:55:151
11065999615,69cyclictest0-21swapper/123:45:141
11065999615,69cyclictest0-21swapper/123:45:131
1051329619,28sleep00-21swapper/019:06:100
11065999416,70cyclictest0-21swapper/122:50:171
11065999415,67cyclictest0-21swapper/100:10:111
11065999315,71cyclictest0-21swapper/121:40:121
11065998915,67cyclictest0-21swapper/122:05:141
11065998915,67cyclictest0-21swapper/121:15:131
11065998816,63cyclictest0-21swapper/100:15:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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