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2026-04-17 - 07:14
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Fri Apr 17, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
737532991222,119cyclictest0-21swapper/423:15:154
73753599940,94cyclictest0-21swapper/720:55:157
737515998971,18cyclictest0-21swapper/020:05:150
737532997837,19cyclictest879104-21/usr/sbin/munin23:25:214
737532997617,39cyclictest860598-21chrt22:50:434
737532997416,39cyclictest750690-21chrt19:30:234
737532997213,19cyclictest0-21swapper/420:19:194
737532997112,19cyclictest0-21swapper/423:03:594
737532997110,39cyclictest834108-21/usr/sbin/munin22:05:204
737532996526,18cyclictest0-21swapper/420:48:514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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