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2024-09-15 - 04:28
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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 rack8slot4.osadl.org (updated Sun Sep 15, 2024 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37186222220166,43sleep50-21swapper/519:09:065
37185912217187,19sleep60-21swapper/619:08:436
37185122215186,18sleep20-21swapper/219:07:352
37165062214181,21sleep70-21swapper/719:06:347
37185582211181,19sleep10-21swapper/119:08:131
37185282211182,18sleep00-21swapper/019:07:480
37164112206175,20sleep40-21swapper/419:05:124
37185692204173,21sleep30-21swapper/319:08:243
371890099320,30cyclictest3868887-21sh23:45:015
371890099320,30cyclictest3868887-21sh23:45:015
371889299320,3cyclictest3860590-21awk23:30:013
371888799320,31cyclictest3787319-21apt21:15:022
371888199320,1cyclictest3777079-21apt-get20:57:020
371890099310,30cyclictest3814514-21sh22:05:015
371890099310,30cyclictest3730491-21latency_hist19:30:015
371889299310,30cyclictest3755533-21apt-get20:16:593
3718884993129,1cyclictest3735871-21sh19:40:011
371888199310,30cyclictest0-21swapper/019:32:000
371888199310,29cyclictest3898880-21munin-run00:40:010
3718900993028,1cyclictest3771704-21apt-get20:47:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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