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2026-05-04 - 15:34
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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 Mon May 04, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296494399810,59cyclictest3019613-21chrt08:49:323
2964945997234,38cyclictest0-21swapper/510:05:165
2964945997032,19cyclictest0-21swapper/512:10:165
296494099645,58cyclictest0-21swapper/007:35:160
296494399590,40cyclictest3096605-21latency_hist11:10:023
296494399570,18cyclictest0-21swapper/310:56:023
2964945995314,19cyclictest0-21swapper/512:20:155
2964941995314,39cyclictest0-21swapper/109:25:161
2964945995113,19cyclictest0-21swapper/511:25:155
2964945995113,19cyclictest0-21swapper/509:55:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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