Features/ArchitectureSupport - changing what we build for

[Conrad Meyer]

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 at tylerc.org>