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2024-04-26 - 01:57
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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 20 highest latencies:
System rackeslot5.osadl.org (updated Thu Apr 25, 2024 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
662399332,2cyclictest1-21systemd08:40:013
661999330,0cyclictest12578-21apt-get09:25:102
662399320,31cyclictest0-21swapper/312:30:133
661999320,29cyclictest2989-21ssh11:36:262
661999320,1cyclictest0-21swapper/212:15:232
6623993129,1cyclictest18530-21sh10:42:253
6623993129,1cyclictest0-21swapper/309:49:093
6623993129,1cyclictest0-21swapper/309:17:093
662399310,30cyclictest31125-21diskmemload11:35:193
662399310,30cyclictest28985-21dump-pmu-power10:55:003
662399310,30cyclictest22825-21ssh11:23:283
662399310,30cyclictest16133-21sh12:26:063
6619993129,1cyclictest90022sleep211:43:442
6619993128,2cyclictest0-21swapper/212:07:262
6619993127,3cyclictest31125-21diskmemload09:16:332
6619993127,3cyclictest0-21swapper/210:57:002
661999310,31cyclictest0-21swapper/211:50:562
661999310,0cyclictest31125-21diskmemload11:02:332
661999310,0cyclictest31125-21diskmemload10:53:072
6618993129,1cyclictest4454-21sh10:26:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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