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2026-05-25 - 23:22
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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 Mon May 25, 2026 12:58:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
107549975777,84cyclictest0-21swapper/011:01:380
10756997190,126cyclictest20998-21ssh09:27:402
1075699661110,212cyclictest0-21swapper/212:05:002
107549962631,380cyclictest0-21swapper/010:52:030
107619962473,85cyclictest10752-21cyclictest12:16:357
107549960712,592cyclictest0-21swapper/012:35:410
10758995987,2cyclictest0-21swapper/410:55:094
10758995987,2cyclictest0-21swapper/410:55:094
10755995953,2cyclictest0-21swapper/110:55:101
10755995953,2cyclictest0-21swapper/110:55:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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