http://bugs.winehq.org/show_bug.cgi?id=26032
--- Comment #5 from Jeremy Newman jnewman@codeweavers.com 2011-02-28 10:57:13 CST --- Adding gzip compression to PHP is easy, but since Bugzilla is written in PERL this is much harder to do.
The preferred way is if the Bugzilla codebase supported it natively. I am against having our Bugzilla tree deviate to far from the main Bugzilla code. On a quick look, it does not look like our version has any support for it.
Another possible way to do it would to be to enable the Apache2 mod_deflate to the bugzilla virtual server. But, I'd want to know the ramifications of that before going down that path. I'm not even sure mod_deflate will work with anything other than static content.
Somebody else will have to assist and do the legwork as I do not have the time right now to research this more in depth.