CRR (XS): 7118202: G1: eden size unnecessarily drops to the minimum

[John Cuthbertson]

Hi Tony,

This looks good to me. Thomas' diagnosis of the cause seems very plausible.

JohnC

On 12/05/11 12:53, Tony Printezis wrote:
> Hi all,
>
> I'd like a couple of code reviews for this very small change:
>
> http://cr.openjdk.java.net/~tonyp/7118202/webrev.0/
>
> It turns out that _max_rs_lengths gets smaller than 
> _recorded_rs_lengths and rs_length_diff ends up huge which causes RSet 
> lengths to be massively overpredicted.
>
> We'll leave this small fix in until we work out why the problem 
> happens (or most likely until we revamp the whole prediction code as 
> we're planning to).
>
> Thanks, again, to Thoms Schatzl for tracking this down.
>
> Tony
>