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2025-12-19 - 22:49
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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 rackfslot7.osadl.org (updated Fri Dec 19, 2025 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
578422991520,152cyclictest0-21swapper/610:12:426
578423991130,109cyclictest0-21swapper/710:12:437
5784209910990,18cyclictest1087-21snmpd09:55:114
578420991030,102cyclictest0-21swapper/407:51:254
578420997416,39cyclictest661586-21perl09:35:154
578420997315,39cyclictest720174-21chrt11:15:324
578420997113,39cyclictest714847-21munin-run11:10:014
578420997012,39cyclictest700889-21munin-run10:45:004
578420996929,39cyclictest0-21swapper/411:52:214
578420996911,39cyclictest593033-21chrt07:35:034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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