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2026-07-27 - 21:17
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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 rack3slot6.osadl.org (updated Mon Jul 27, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139179910318,56cyclictest0-21swapper/008:05:120
1375629919,34sleep10-21swapper/107:09:411
13917999218,58cyclictest0-21swapper/011:40:140
13917999018,57cyclictest0-21swapper/007:20:240
13917998816,62cyclictest0-21swapper/008:50:120
13917998816,58cyclictest0-21swapper/012:25:130
13917998814,58cyclictest0-21swapper/009:20:130
13917998716,58cyclictest0-21swapper/008:55:140
13917998713,58cyclictest0-21swapper/007:10:130
13917998616,55cyclictest0-21swapper/011:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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