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2024-07-27 - 07:18
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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 rackeslot8.osadl.org (updated Sat Jul 27, 2024 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182531621090,1sleep244-21ksoftirqd/222:20:012
16064822940,1sleep01606486-21cut19:35:180
18625532300,1sleep30-21swapper/322:43:503
1569745992926,2cyclictest1749000-21munin-plugin-st21:30:001
16995312280,1sleep30-21swapper/320:50:243
156974599251,23cyclictest1645619-21apt-get20:10:111
1569749992421,2cyclictest1893267-21cron23:04:592
1569751992320,1cyclictest0-21swapper/322:25:003
1569751992313,8cyclictest1741139-21turbostat21:25:003
1569751992313,1cyclictest0-21swapper/323:10:183
1569751992311,1cyclictest0-21swapper/323:50:163
1569749992320,2cyclictest1984063-21turbostat.cron00:05:002
1569745992318,3cyclictest1984482-21tr00:05:111
1569751992216,4cyclictest0-21swapper/322:20:003
1569751992212,1cyclictest0-21swapper/321:50:173
1569751992210,1cyclictest0-21swapper/321:55:113
1569751992210,1cyclictest0-21swapper/320:00:163
1569751992210,1cyclictest0-21swapper/319:25:253
1569745992219,2cyclictest1915988-21latency_hist23:20:001
1569745992219,2cyclictest1700021-21apt-config20:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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