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Discussion on Garbage collector tuning

additi singhal
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October 26, 2021

Hi Team,

I would like to ask one question that in the given below link, you illustrated one example on GC tuning in which you mentioned; 

-XX:MaxGCPauseMillis=10000 -XX:MaxGCMinorPauseMillis=100 -XX:GCTimeRatio=2
Mean minor GC pause time:0.06 seconds
Maximum full GC pause time:5.33 seconds
Throughput:80.19 %

How are you calculating throughput value assuming that mean minor GC pause time and maximum full GC pause time are average values from GC logs.

Can you please explain throughput value as GCTimeRatio is not matching with 80.19%(1/(1+2))

Link: https://confluence.atlassian.com/enterprise/garbage-collection-gc-tuning-guide-461504616.html#GarbageCollection(GC)TuningGuide-CalculatingmaximumfullGClatency

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