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2024-09-13 - 07:42
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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 rack4slot6.osadl.org (updated Fri Sep 13, 2024 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29019521370,132pltrace0-21swapper/119:05:131
29019521280,122pltrace0-21swapper/219:05:182
29019521150,110pltrace0-21swapper/619:05:216
29019521140,109pltrace0-21swapper/519:05:085
31815521110,102pltrace0-21swapper/719:10:007
3035027545,25sleep30-21swapper/319:05:163
3162626341,18sleep00-21swapper/019:07:300
3155225743,10sleep40-21swapper/419:06:294
54222340,0sleep50-21swapper/520:15:115
1264152290,2pltrace0-21swapper/720:30:157
32022992612,13cyclictest0-21swapper/021:40:120
32022992612,13cyclictest0-21swapper/021:40:120
1603652230,4pltrace0-21swapper/523:34:115
89652200,0pltrace0-21swapper/722:05:507
932852180,0pltrace0-21swapper/722:20:537
3000352180,0pltrace0-21swapper/723:57:267
1821852180,3pltrace0-21swapper/720:40:347
880852170,4pltrace0-21swapper/700:16:137
872052170,10pltrace8739-21latency_hist19:25:011
487552170,0pltrace0-21swapper/723:14:377
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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