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2024-04-20 - 10:38
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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 rack5slot2.osadl.org (updated Fri Apr 19, 2024 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167222206190,11sleep10-21swapper/107:07:521
168752185168,12sleep00-21swapper/007:09:480
168072184167,12sleep20-21swapper/207:08:572
146682184167,12sleep30-21swapper/307:05:053
291772450,0sleep00-21swapper/010:58:140
170459981,3cyclictest12902-21perf09:10:010
170459980,7cyclictest0-21swapper/010:30:110
170609970,6cyclictest0-21swapper/309:50:103
170459971,3cyclictest607-21sendmail-msp12:20:010
170549965,1cyclictest0-21swapper/212:28:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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