I have some changes in SVN that will attempt to pre-fill metadata
caches when running under mod_perl. In my brief testing it only shows
a small difference in shared memory (~100KB) when loading four
RDBO-derived classes and doing something trivial with them.
It works by calling prime_caches() during the call to initialize()
when $ENV{'MOD_PERL'} is true. If you're using the Loader to create
classes, you may need to call:
Rose::DB::Object::Metadata->prime_all_caches();
in your startup.pl, since the Loader tends to invalidate metadata
caches as new links between classes are discovered during loading.
If someone with a more complex setup and a means to measure shared
memory would like to compare the SVN version with the current release,
I'd appreciate it. Failing that, I will probably just release these
changes as-is, since they seem to help a little.
-John
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