On Sun, May 31, 2009 at 04:14:19PM -0400, Craig Andrews wrote:
> Package: xulrunner
> Version: 1.9.0.7-1
> Severity: wishlist
>
> xulrunner is not presently compiled with PGO (Profile Guided
> Optimizations). PGO can significantly improve Iceweasel/Firefox
> performance (some have reported a 3x performance improvement). It would be
> really great if the Debian packages used PGO and made the mozilla browser
> performance as well on Debian as it does on Windows. Thanks!
There are a whole lot of problems that make it almost impossible:
- Build time and buildd resources
- Upstream support (PGO is not supported yet on linux)
- Profiling requires a xulrunner application, and I think PGO upstream
scripts care about firefox. This means 2 things:
- xulrunner would be profiled for one application, and not others
- xulrunner would need to depend on the application, introducing a
dependency loop, or the packages should be merged.
Let's add to that that I don't know if PGO builds require network at
build time, but I sure hope it doesn't because that'd be a big NO.
Not coming any time soon, I'm afraid.
Mike
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