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@xxxxxxxxxx> -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
