default value for CMSInitiatingOccupancyFraction ?

Jon Masamitsu Jon.Masamitsu at Sun.COM
Fri Jul 18 08:43:13 PDT 2008


charlie hunt wrote On 07/18/08 08:11,:

>IIRC, the default value for CMSInitiatingOccupancyFraction 92%, is that 
>right ?
>
>And, is the same default value, 92%, used in OpenJDK, Java 6 and Java 5 ?
>
>thanks,
>
>charlie ...
>  
>
Basically, the answer is yes, the default initiating occupancy for
OpenJDK, jdk6 and jdk5 is 92%.  But by default the initiating
occupancy is calculated from MinHeapFreeRatio and CMSTriggerRatio
and is calculated as 92%.  CMSInitiatingOccupancyFraction is used to
override that calculation.  By default it is not used.



More information about the hotspot-gc-dev mailing list