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2024-04-20 - 09:21
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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 rackcslot8.osadl.org (updated Sat Apr 20, 2024 00:48:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
50849917378,94cyclictest76-21ksoftirqd/1022:23:202
50849917378,94cyclictest76-21ksoftirqd/1022:23:202
51399915512,121cyclictest0-21swapper/2023:43:1613
50789915310,84cyclictest0-21swapper/900:31:2431
520099146146,0cyclictest0-21swapper/3020:59:0324
51399914324,118cyclictest0-21swapper/2023:10:1013
51399914324,118cyclictest0-21swapper/2023:10:1013
51399914224,117cyclictest0-21swapper/2022:34:2813
51399914224,117cyclictest0-21swapper/2022:34:2713
51399914224,117cyclictest0-21swapper/2021:31:1713
5129991410,86cyclictest0-21swapper/1823:56:4610
5139991400,87cyclictest0-21swapper/2023:47:4713
5123991390,88cyclictest0-21swapper/1721:12:109
5098991370,78cyclictest0-21swapper/1221:37:154
51049913512,75cyclictest0-21swapper/1322:07:425
51049913512,75cyclictest0-21swapper/1322:07:415
50849913529,67cyclictest0-21swapper/1000:25:012
51399913416,117cyclictest0-21swapper/2022:00:3913
51399913416,117cyclictest0-21swapper/2022:00:3913
51239913320,69cyclictest0-21swapper/1723:26:529
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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