System.identityHashCode performance

Christian Thalinger Christian.Thalinger at Sun.COM
Tue Sep 22 11:47:44 UTC 2009

Tom Hawtin wrote:
> 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...

Martin, are you having performance problems with client or server compiler?

-- Christian

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