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2026-04-05 - 16:15
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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 Sun Apr 05, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1339366997012,19cyclictest0-21swapper/307:25:153
1339378996022,19cyclictest0-21swapper/511:50:175
1339366995718,19cyclictest194598rtkit-daemon10:20:153
1339388995436,18cyclictest1451881-21kworker/0:210:35:347
1339388995334,19cyclictest2-21kthreadd08:53:277
1339361995315,38cyclictest0-21swapper/111:35:171
1339363995214,38cyclictest0-21swapper/211:30:152
1339361995214,38cyclictest0-21swapper/111:30:151
1339388995113,19cyclictest0-21swapper/708:35:167
1339388995113,19cyclictest0-21swapper/707:15:167
1339361995132,19cyclictest0-21swapper/108:10:171
1339378995031,19cyclictest0-21swapper/512:35:145
1339361995012,19cyclictest0-21swapper/107:10:151
1339366994910,39cyclictest0-21swapper/311:25:143
1339388994810,19cyclictest0-21swapper/709:20:157
1339388994810,19cyclictest0-21swapper/707:50:157
133938899479,38cyclictest0-21swapper/708:05:187
133936699475,19cyclictest0-21swapper/310:25:173
133936399479,19cyclictest0-21swapper/208:10:182
133938899467,20cyclictest861rcuc/707:35:207
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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