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2026-09-01 - 17:00
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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 Sep 01, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191278199991,97cyclictest0-21swapper/110:25:171
1912784998830,39cyclictest236199-21snmpd11:09:034
1912784997516,39cyclictest2036668-21latency_hist10:55:024
1912784997414,39cyclictest1938723-21if_eno507:55:144
1912784997233,19cyclictest0-21swapper/412:34:244
1912780997112,19cyclictest0-21swapper/010:35:180
1912784997068,1cyclictest2010721-21ntpq10:05:204
1912784996929,39cyclictest0-21swapper/410:01:034
1912784996911,39cyclictest1998506-21cut09:45:024
191278499689,19cyclictest0-21swapper/410:56:414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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