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2025-11-14 - 05:48
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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 Fri Nov 14, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25064622280,4sleep0151ktimers/023:29:410
213123199271,22cyclictest2586858-21turbostat00:20:003
2131231992522,1cyclictest0-21swapper/300:30:013
2131231992219,1cyclictest0-21swapper/323:25:013
2131231992118,1cyclictest0-21swapper/322:45:003
2131231992118,1cyclictest0-21swapper/321:55:143
2131231992118,1cyclictest0-21swapper/321:10:003
2131231992017,1cyclictest0-21swapper/319:20:003
213123199201,14cyclictest2320021-21taskset21:30:263
213123199201,14cyclictest2232972-21taskset20:30:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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