On Dec 3, 4:51 am, "jacek.ambroziak" <jacek.ambroz...@gmail.com>
wrote:
> My application, an XML search engine, likes to manipulate its index
> data structures in memory during indexing.
> Searches are naturally much faster too when index data structures are
> in the heap.
> Unfortunately, I started running into OutOfMemory errors while
> indexing larger numbers of publications,
> but not huge number either: ~ 300. Data (typically byte arrays) I
> manipulate are on the order of 20 MB,
> again a very small mem requirement for this Century (both my dev
> computers are now 4 GB).
>
> Yes, I could bend over backwards and start using Datastore for some
> form of poor man's virtual memory
> but it wouldn't win all that much more space, would slow down and
> complicate the code.
>
> So... how much heap space do we have?

http://kohlerm.blogspot.com/2009/04/some-facts-about-java-used-by-googles.html

> Can we affect the size?

Doesn't look like it.

Cheers
Philippe

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