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2024-07-27 - 03:37
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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 Sat Jul 27, 2024 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1633652970,89pltrace0-21swapper/719:09:317
1621828649,10sleep60-21swapper/619:08:006
1610227460,10sleep30-21swapper/319:06:213
1623527360,9sleep50-21swapper/519:08:155
1621427056,10sleep20-21swapper/219:07:572
1635426741,5sleep40-21swapper/419:09:344
1618226248,10sleep00-21swapper/019:07:310
1609126147,10sleep10-21swapper/119:06:121
2389852250,2pltrace0-21swapper/120:19:541
1661899230,16cyclictest0-21swapper/323:26:083
1660699231,15cyclictest0-21swapper/020:17:510
1662399220,16cyclictest0-21swapper/423:35:574
16614992016,2cyclictest0-21swapper/220:38:192
1490152200,5pltrace0-21swapper/722:02:267
91852180,11pltrace2765-21cut21:35:176
16614991815,2cyclictest0-21swapper/222:58:242
436452170,11pltrace7016-21chrt19:47:463
312752170,12pltrace54-21ksoftirqd/423:35:004
16630991712,3cyclictest0-21swapper/519:11:275
16630991711,5cyclictest0-21swapper/523:51:135
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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