Janda, you could provide a/the patch to force the fix of this bug.
See: http://openjdk.java.net/contribute/

-Ulf


Am 22.09.2009 13:35, Tom Hawtin schrieb:
Janda Martin wrote:
I would like to ask about any plans of speed improvements to "System.identityHashCode" or "IdentityHashMap"

I use EclipseLink and it uses IdentityHashMap for storing entities and their clones.

In my case System.identityHashCode consumes 54% of time during insert data to database. There are lots of other project using IdentityHashMap and identityHashCode.

CR 6378256 seems to cover this for the client/C1 compiler. Presumably the server/C2 compiler already intrinsifies the method. It's been in "fix understood" for a couple of years...

http://bugs.sun.com/view_bug.do?bug_id=6378256

Tom Hawtin



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