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2026-06-21 - 05:30
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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 Sun Jun 21, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
357963997517,57cyclictest383702-21if_err_eno419:55:184
357963997032,19cyclictest512520-21munin-run23:50:004
357963996929,39cyclictest505012-21entropy23:35:124
357963996911,39cyclictest468436-21munin-run22:30:014
35796399657,39cyclictest870-21mta-sts-daemon23:16:444
357963996527,18cyclictest0-21swapper/423:05:254
357963996526,19cyclictest0-21swapper/400:11:524
35796399645,39cyclictest876-21mta-sts-daemon19:26:254
357963996426,18cyclictest0-21swapper/400:06:054
357963996324,19cyclictest0-21swapper/423:21:134
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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