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2025-12-23 - 22:33
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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 Tue Dec 23, 2025 12:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1574604999313,79cyclictest0-21swapper/207:15:152
1574604998830,39cyclictest1592772-21if_err_enxbe3af07:40:162
157460699850,83cyclictest0-21swapper/408:45:124
1574604997719,39cyclictest1642969-21cat09:10:022
1574604997716,59cyclictest1751402-21lpstat12:20:162
1574605997131,39cyclictest511ktimers/310:35:163
1574604997131,39cyclictest1606112-21/usr/sbin/munin08:05:122
1574604997012,39cyclictest1616317-21cat08:20:232
1574604996930,38cyclictest872-21mta-sts-daemon09:15:202
1574604996831,18cyclictest421ktimers/210:37:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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