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2026-07-23 - 00:46
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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 rack3slot6.osadl.org (updated Wed Jul 22, 2026 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20667999128,58cyclictest0-21swapper/107:20:231
20662999145,26cyclictest503-21snmpd12:24:250
2024428423,50sleep10-21swapper/107:07:391
20662997848,16cyclictest14-21ksoftirqd/010:59:590
20662997736,28cyclictest14-21ksoftirqd/008:25:350
2015327618,48sleep00-21swapper/007:06:390
20662997511,23cyclictest12381-21packagekitd09:50:100
20662997441,15cyclictest14-21ksoftirqd/011:00:190
20662997328,30cyclictest24582-21wc10:20:010
20662997237,22cyclictest14-21ksoftirqd/008:05:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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