G1 eden resizing behaviour ?

[Simone Bordet]

Hi,

On Tue, Dec 9, 2014 at 2:43 PM, Thomas Schatzl
<thomas.schatzl at oracle.com> wrote:
>   sounds like JDK-8035557.

Thanks for the fast response !

With respect to https://bugs.openjdk.java.net/browse/JDK-8035557 I
observe that the Eden shrinks in the young GC *before* the mixed GCs.
Is that just an alternate behaviour of the same bug ?

I remember a while back G1 performing mixed GC after the end of marking.
More recently, it always perform a young GC after the end of marking,
before starting the mixed GCs.
Was this young GC added exactly to cope with mispredictions due to
evacuations of old regions ?

Thanks !

-- 
Simone Bordet
http://bordet.blogspot.com
---
Finally, no matter how good the architecture and design are,
to deliver bug-free software with optimal performance and reliability,
the implementation technique must be flawless.   Victoria Livschitz