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2026-05-26 - 17:14
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Tue May 26, 2026 12:46:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3691013995417,18cyclictest88-21ksoftirqd/707:40:147
3691013995213,39cyclictest0-21swapper/708:05:197
3691010995214,19cyclictest0-21swapper/510:40:175
3691013995012,19cyclictest0-21swapper/710:00:167
369101299509,21cyclictest3799711-21if_err_eno310:25:156
3691007994911,19cyclictest0-21swapper/308:55:143
369101399467,39cyclictest0-21swapper/709:40:157
369100599468,19cyclictest0-21swapper/108:30:151
369100599468,19cyclictest0-21swapper/108:30:151
369100799458,18cyclictest0-21swapper/308:35:173
369101099446,19cyclictest0-21swapper/510:10:155
369101099446,19cyclictest0-21swapper/509:25:155
369100799436,18cyclictest0-21swapper/307:55:153
3691012994020,1cyclictest877-21mta-sts-daemon08:15:256
3691012994020,1cyclictest877-21mta-sts-daemon08:15:246
369101399390,20cyclictest0-21swapper/709:20:157
369101099390,20cyclictest0-21swapper/508:50:165
369101399380,19cyclictest0-21swapper/709:30:167
369101099380,19cyclictest0-21swapper/511:55:155
369101099380,19cyclictest0-21swapper/511:55:145
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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