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2025-11-24 - 09:44
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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 rackeslot8.osadl.org (updated Mon Nov 24, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2512518993026,1cyclictest0-21swapper/321:30:013
2512518992219,1cyclictest0-21swapper/323:45:193
2512518992217,2cyclictest2679762-21sleep21:20:003
27499162210,10sleep02749924-21ssh22:00:370
2512518992017,1cyclictest0-21swapper/321:55:253
251251899201,16cyclictest2564783-21turbostat19:54:553
251251899201,14cyclictest2896147-21chrt23:35:003
251251899199,6cyclictest28795262sleep323:23:513
2512518991916,1cyclictest0-21swapper/319:35:003
2512518991916,1cyclictest0-21swapper/300:40:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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