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2025-12-09 - 01:13
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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 rack4slot6.osadl.org (updated Mon Dec 08, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4606521280,116pltrace0-21swapper/707:05:137
7397521060,102pltrace0-21swapper/507:10:005
460652900,86pltrace0-21swapper/107:05:181
460652840,53pltrace0-21swapper/607:05:166
728827460,10sleep30-21swapper/307:05:333
733426652,10sleep20-21swapper/207:06:122
758326240,17sleep40-21swapper/407:09:274
744925945,10sleep00-21swapper/007:07:310
1051252200,3pltrace0-21swapper/709:10:037
1498652190,11pltrace16383-21perl08:20:157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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