On Wednesday 04 February 2009 09:15:47 am Callum Lerwick wrote:
On Wed, 2009-02-04 at 15:00 +0100, Kevin Kofler wrote:
> Callum Lerwick wrote:
> > Going -O3 rather than -O2 is going to make a bigger difference than
> > anything else. If you want to improve performance, you need to run
> > profiles, locate performance critical bits of code, figure out if -O3
> > is beneficial, and/or write some hand tuned assembly/intrinsic code.
> >
> > Not to mention, the biggest performance problem on modern processors is
> > memory. Minimizing cache thrashing is way more important than what
> > instructions you use. Optimize data structures before code.
>
> That's actually an argument for investigating -Os, not -O3.
I don't think code size is what's making Firefox eat up 1gb RAM.
Nor is Firefox's 1GB of ram causing cache thrashing...
--
Conrad Meyer <konrad(a)tylerc.org>