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2024-11-22 - 17:21
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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 20 highest latencies:
System rack0slot2.osadl.org (updated Fri Nov 22, 2024 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1283191993635,0cyclictest0-21swapper/710:57:387
1283191992220,1cyclictest0-21swapper/708:04:337
1283191992113,7cyclictest0-21swapper/710:34:257
128318399210,20cyclictest0-21swapper/410:58:014
128319199200,6cyclictest0-21swapper/708:40:157
1283185992018,2cyclictest1767126-21kworker/u16:6+flush-8:012:33:035
1283188991916,2cyclictest1450594-21kworker/u16:4+flush-8:008:28:156
1283188991914,4cyclictest1737186-21latency_hist10:52:386
1283185991917,2cyclictest1706074-21kworker/u16:1+events_unbound11:28:565
1283185991917,2cyclictest1706074-21kworker/u16:1+events_unbound11:28:565
1283185991917,2cyclictest1605590-21kworker/u16:3+events_unbound10:58:085
1283185991816,2cyclictest1758148-21kworker/u16:0+flush-8:011:03:065
1283185991815,2cyclictest1501677-21kworker/u16:2+flush-8:008:57:385
1283185991815,2cyclictest1328126-21kworker/u16:0+events_unbound08:03:075
128319199174,5cyclictest0-21swapper/710:20:157
128318899170,6cyclictest0-21swapper/609:07:526
128318899170,13cyclictest0-21swapper/608:43:026
1283185991715,2cyclictest1501677-21kworker/u16:2+events_unbound10:32:595
1283185991715,2cyclictest1501677-21kworker/u16:2+events_unbound10:12:535
128319199168,7cyclictest0-21swapper/707:30:347
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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