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2026-05-21 - 03:52
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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 rack5slot3.osadl.org (updated Thu May 21, 2026 00:54:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122379973917,719cyclictest0-21swapper/422:03:344
12237996341,83cyclictest0-21swapper/423:26:534
122379963237,592cyclictest0-21swapper/421:57:414
122379963237,592cyclictest0-21swapper/421:57:414
122369963038,389cyclictest0-21swapper/321:48:223
122399962373,465cyclictest0-21swapper/622:14:126
122379961321,85cyclictest0-21swapper/423:22:014
122389961119,2cyclictest0-21swapper/500:23:025
122389961119,2cyclictest0-21swapper/500:23:015
122369961156,382cyclictest0-21swapper/321:13:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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