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2026-07-28 - 10:32
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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 rackfslot7.osadl.org (updated Tue Jul 28, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3149995997231,19cyclictest3310452-21ntp_states00:00:195
3149995997214,39cyclictest3236429-21ntpq21:45:175
3149995997214,19cyclictest0-21swapper/522:10:325
3149995997213,19cyclictest0-21swapper/522:06:595
3149995997112,19cyclictest0-21swapper/521:26:085
3149995997112,19cyclictest0-21swapper/520:58:405
3149995997112,19cyclictest0-21swapper/520:20:055
3149995997012,19cyclictest0-21swapper/521:01:165
3149995997011,59cyclictest0-21swapper/521:14:485
3149995997011,19cyclictest0-21swapper/500:19:285
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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