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2026-05-08 - 19:53
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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 rackbslot7.osadl.org (updated Fri May 08, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94799911260,46cyclictest16846-21diskmemload12:21:370
94799911240,7cyclictest0-21swapper/009:47:110
9479991123,36cyclictest17628-21ssh09:56:510
94799911050,53cyclictest0-21swapper/007:12:100
94799911050,53cyclictest0-21swapper/007:12:100
94799911044,62cyclictest9468-21cyclictest12:27:110
94799911040,7cyclictest0-21swapper/011:57:010
94799910843,11cyclictest28028-21ssh12:02:190
94799910826,18cyclictest0-21swapper/011:16:370
94799910739,9cyclictest0-21swapper/010:01:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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