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2026-01-07 - 20:21
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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 Wed Jan 07, 2026 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
591996997617,19cyclictest870-21mta-sts-daemon07:18:035
591996997314,19cyclictest0-21swapper/511:40:075
591996997314,19cyclictest0-21swapper/511:13:105
591996997314,0cyclictest0-21swapper/511:06:075
591996997213,19cyclictest0-21swapper/512:08:075
591996997213,19cyclictest0-21swapper/510:42:155
591996996037,19cyclictest697294-21awk10:10:235
591996995935,23cyclictest654942-21cat09:00:005
591996995919,39cyclictest0-21swapper/509:11:595
591996995919,39cyclictest0-21swapper/508:35:545
59199699590,0cyclictest0-21swapper/512:21:345
59199699590,0cyclictest0-21swapper/509:51:545
59199699590,0cyclictest0-21swapper/508:04:075
591996995834,20cyclictest678701-21gltestperf09:40:145
591996995819,38cyclictest0-21swapper/512:34:195
591996995819,38cyclictest0-21swapper/512:34:185
591996995819,38cyclictest0-21swapper/512:00:355
591996995819,38cyclictest0-21swapper/508:30:595
591996995819,38cyclictest0-21swapper/508:18:155
591996995819,38cyclictest0-21swapper/507:36:425
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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