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2025-12-25 - 21:52
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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 rack1slot8.osadl.org (updated Thu Dec 25, 2025 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46309918491779,50cyclictest0-21swapper/009:19:380
44012571548,15sleep00-21swapper/007:08:050
4631995534,477cyclictest0-21swapper/109:19:381
463199526458,24cyclictest5299-21munin-node07:10:171
463099492400,85cyclictest0-21swapper/007:10:170
42752132112,13sleep10-21swapper/107:06:471
46309911913,99cyclictest0-21swapper/011:19:590
228699940,5rtkit-daemon2285-21rtkit-daemon12:19:561
228699920,11rtkit-daemon0-21swapper/108:45:081
4630999112,57cyclictest0-21swapper/008:45:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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