Re: kernel optimization

From: Adrian Bunk
Date: Tue Jul 26 2005 - 04:23:51 EST

On Tue, Jul 26, 2005 at 08:22:59AM +0300, Al Boldi wrote:
> Dr. Horst H. von Brand wrote: {
> Al Boldi <a1426z@xxxxxxxxx> wrote:
> > Adrian Bunk wrote: {
> > On Fri, Jul 22, 2005 at 07:55:48PM +0100, christos gentsis wrote:
> > > i would like to ask if it possible to change the optimization of the
> > > kernel from -O2 to -O3 :D, how can i do that? if i change it to the
> > > top level Makefile does it change to all the Makefiles?
> > And since it's larger, it's also slower.
> > }
> > It's faster but it's flawed. Root-NFS boot failed!
> How do you know that it is faster if it is busted?
> }
> The -O3 compile produces a faster kernel, which seems to work perfectly,
> albeit the Root-NFS boot flaw!

How did you measure that you that your -O3 kernel isn't slower?

> Al



"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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