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2025-11-29 - 02:03
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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 rack9slot2.osadl.org (updated Fri Nov 28, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286462299260,26sleep10-21swapper/11
2882299269264,3cyclictest13886-21idleruntime-cro3
285262266210,44sleep30-21swapper/33
284362261189,24sleep00-21swapper/00
2881499239232,4cyclictest13859-21munin-run1
284332228191,24sleep20-21swapper/22
2880999164157,5cyclictest13878-21perf0
2881799154141,11cyclictest0-21swapper/22
39982680,3sleep10-21swapper/11
81022540,2sleep30-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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