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2026-07-17 - 00:54
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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 Thu Jul 16, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3824210420,39sleep00-21swapper/007:08:430
41179910176,13cyclictest14-21ksoftirqd/008:40:120
2176921000,6chrt21768-21sed09:25:361
4117999972,14cyclictest14-21ksoftirqd/012:15:110
4117999873,13cyclictest14-21ksoftirqd/008:45:140
4117999771,16cyclictest14-21ksoftirqd/010:35:150
4117999766,17cyclictest14-21ksoftirqd/009:40:160
4117999670,13cyclictest14-21ksoftirqd/011:35:110
4117999467,15cyclictest0-21swapper/011:00:130
4117999167,16cyclictest14-21ksoftirqd/011:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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