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2025-05-09 - 05:44
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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 rackeslot3.osadl.org (updated Fri May 09, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
231513699663,61cyclictest0-21swapper/120:57:501
2315136996561,3cyclictest0-21swapper/120:10:051
2315136996441,22cyclictest2334481-21kworker/1:020:45:161
2315136996361,1cyclictest0-21swapper/120:15:211
231513699630,62cyclictest0-21swapper/120:08:561
2315136996259,2cyclictest0-21swapper/121:55:191
2315136996246,15cyclictest2380097-21kworker/1:122:40:231
2315136996045,14cyclictest2404807-21kworker/1:023:55:151
2315136996042,16cyclictest2325591-21kworker/1:319:55:151
2315136995956,2cyclictest0-21swapper/122:55:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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