reduce memory for javadoc

[Andrew Hughes]

----- Original Message -----
> Build folk,
> 
> As a result of these two changesets now in tl/langtools, we can now
> reduce the memory requirements for javadoc in
> (root)common/makefiles/javadoc/Javadoc.gmk.
> 
> changeset:   1678:3f3cc8d3f13c
> tag:         tip
> user:        jjg
> date:        Mon Apr 08 11:57:37 2013 -0700
> summary:     8011677: EndPosTables should avoid hidden references to Parser
> 
> changeset:   1677:b402b93cbe38
> user:        jjg
> date:        Mon Apr 08 11:54:26 2013 -0700
> summary:     8011676: Instances of Tokens.Comment should not be defined
> in inner classes
> 
> 
> I have done builds with the memory limited to 512m, down from 1024m.  I
> did try further, with 384m, but that was too much of a reduction.
> 
> $ hg diff
> diff -r 11c057460b91 common/makefiles/javadoc/Javadoc.gmk
> --- a/common/makefiles/javadoc/Javadoc.gmk    Fri Apr 05 14:49:54 2013 -0700
> +++ b/common/makefiles/javadoc/Javadoc.gmk    Tue Apr 09 18:42:37 2013 -0700
> @@ -47,7 +47,7 @@
>   BUILD_NUMBER=$(JDK_BUILD_NUMBER)
> 
>   JAVADOC_CMD = $(JAVA) \
> -              -Xmx1024m \
> +              -Xmx512m \
>             -Djava.awt.headless=true \
>             $(NEW_JAVADOC) \
>             -bootclasspath $(JDK_OUTPUTDIR)/classes
> 
> -- Jon
> 

I'd be wary of changing this because, in my experience, it varies depending
on VM and architecture.  What was tested for these figures?
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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