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2024-04-24 - 08:21
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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 rackeslot5.osadl.org (updated Wed Apr 24, 2024 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2316099322,29cyclictest21664-21/usr/sbin/munin21:55:160
2316399310,2cyclictest20154-21cut23:05:013
23162993128,2cyclictest16168-21ssh21:48:412
2316299310,30cyclictest13143-21diskmemload23:22:082
2316199310,30cyclictest16621-21sh21:49:351
2316199310,30cyclictest13143-21diskmemload23:40:111
2316199310,30cyclictest0-21swapper/122:40:201
2316099310,30cyclictest10790-21apt-key23:30:010
2316399300,29cyclictest2709-21ssh00:30:513
2316399300,1cyclictest754-21runrttasks23:31:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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