Performance tuning the Fedora Desktop
Owen Taylor
otaylor at redhat.com
Sun May 9 15:56:09 UTC 2004
On Sun, 2004-05-09 at 08:39, Warren Togami wrote:
> Will Cohen wrote:
> > I work on performance tools at Red Hat. I have been told there is
> > interest in tuning the desktop to improve performance. I have a number
> > of questions to help identify the work needed in this area. I would be
> > interested in any answers that people have for the following questions.
> >
> On a somewhat related topic of desktop performance, recently fedora.us
> Extras has begun experimenting with -Os rather than the standard -O2
> optimization for our firefox & thunderbird packages. So far it seems to
> be working very well, with noticably smaller binary RPMS and runtime
> memory footprint of these two very large applications. I asked gcc
> developers if they had a guess about which -O2 and -Os would be "faster"
> for large applications like firefox & thunderbird. They generally
> replied that they have no idea, because compiler optimization is an
> inexact science. All kinds of other factors come into play like smaller
> memory footprint (less swapping), smaller code size (maybe better use of
> CPU cache).
>
> Have there been any past discussions about changing the standard
> compiler optimization for perhaps FC3?
Well, I think you've described a wonderful project that someone could do
... recompile the desktop packages with -Os and do some timing. That's
the only way we'd know whether we should change the optimization flags
or not.
Regards,
Owen
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