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2026-05-30 - 11:18
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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 Sat May 30, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1111281999214,59cyclictest1231322-21ntpq22:45:194
1111281997718,59cyclictest1143241-21lpstat20:05:194
1111281997516,40cyclictest1276089-21chrt00:06:274
1111281997335,19cyclictest1086-21runrttasks20:58:134
1111281997315,39cyclictest1119546-21dpkg19:25:014
1111281997253,19cyclictest0-21swapper/420:25:164
1111281997133,38cyclictest0-21swapper/422:13:494
1111281997113,39cyclictest1240371-21grep23:00:234
1111281997032,38cyclictest0-21swapper/423:15:184
1111281996931,38cyclictest0-21swapper/420:20:294
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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