RFR (XXS): 8136680: Enable adaptive IHOP by default

Mikael Gerdin mikael.gerdin at oracle.com
Tue Nov 24 11:05:55 UTC 2015


Hi Thomas,

On 2015-11-24 11:14, Thomas Schatzl wrote:
> Hi all,
>
>    can I have reviews for the following small change that enables
> adaptive IHOP by default by setting G1UseAdaptiveIHOP to true by
> default.
>
> This feature improves usability of G1 as the user does not need to care
> about the InitiatingHeapOccupancyPercent option any more. It will be set
> automatically based on predictions of previous application behavior.
>
> The existing InitiatingHeapOccupancyPercent option still serves as
> initial value for the predictions.
> Of course, by manually setting G1UseAdaptiveIHOP to false, original
> behavior is preserved.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8136680
>
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8136680/webrev/

The change looks good.
/Mikael

>
> Testing:
> Previous dependent CRs adding adaptive IHOP functionality. Local build
> for this particular change.
>
> Thanks,
>    Thomas
>
>



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