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2023-10-03 - 06:01
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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 rack5slot3.osadl.org (updated Tue Oct 03, 2023 00:50:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2753529388,2sleep40-21swapper/419:05:214
2753529388,2sleep40-21swapper/419:05:214
287172890,0sleep40-21swapper/423:05:014
2960228349,30sleep20-21swapper/219:09:362
2960228349,30sleep20-21swapper/219:09:362
2953228349,29sleep60-21swapper/619:08:366
2953228349,29sleep60-21swapper/619:08:366
2961228146,30sleep30-21swapper/319:09:463
2961228146,30sleep30-21swapper/319:09:463
2940328147,30sleep70-21swapper/719:06:457
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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