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2025-08-27 - 21:45
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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 rack5slot2.osadl.org (updated Wed Aug 27, 2025 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260802198183,11sleep10-21swapper/107:08:161
259072197181,12sleep00-21swapper/007:06:050
259102192174,13sleep30-21swapper/307:06:083
259412167149,13sleep20-21swapper/207:06:322
6782450,0sleep30-21swapper/310:03:033
56622410,0sleep10-21swapper/111:10:151
293472410,0sleep10-21swapper/110:33:291
2639699102,4cyclictest19830-21munin-run08:00:010
180772100,0sleep30-21swapper/310:44:123
135142100,0sleep313489-21ssh11:30:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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