On 17/09/2013 01:16, Mike Duigou wrote:
Hello all;
This is a cross-repo patch which disables building and enabling of the
alt-rt.jar file. The alt-rt.jar file has been used with the -XX:+AggressiveOpts
option (which will be remaining for other optimizations). This jar file
formerly contained (closed-source) versions of several JDK classes which were
optimized for very specific workloads. The implementations weren't generally
applicable and in many cases induced performance drops. In particular since we
will not be providing optimized implementations of the Java 8 streams API for
the alternate versions of these classes the performance relative to the
standard implementations would be poor.
Over time we've (largely Alan Bateman) been trying to eliminate this difficult
to support feature. With this changeset the alt-rt.jar feature is retired.
http://cr.openjdk.java.net/~mduigou/JDK-8024826/0/webrev/
Ideally I would like a reviewer for both the HotSpot and JDK repos (could be
the same person).
Mike
Thank you Mike, looks like you've caught everything and it's great to
finally get rid of this.
-Alan.
