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2025-12-14 - 12:03
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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 Dec 14, 2025 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3826551999535,39cyclictest3916651-21grep21:45:236
382654999950,16cyclictest0-21swapper/420:40:154
3826551999414,40cyclictest3836107-21if_eno219:25:166
3826551997716,40cyclictest3885544-21cat20:50:236
3826551997514,59cyclictest0-21swapper/619:23:246
3826551997514,59cyclictest0-21swapper/619:23:236
3826551997433,40cyclictest0-21swapper/620:08:596
3826551997417,38cyclictest3997958-21gcc00:10:196
3826551997313,20cyclictest0-21swapper/621:39:576
3826551997232,39cyclictest0-21swapper/600:32:556
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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