[lkml]   [2003]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [Lse-tech] Re: gcc 2.95 vs 3.21 performance
On Wed, Feb 05, 2003 at 01:41:34PM +0200, Denis Vlasenko wrote:
> My argument was against overusing optimization techniques.
> You cannot speed up kernel by aligning *everything* to 32 bytes,
> or by unrolling all loops, or by aggressive inlining.
> That's too easy to work. You get kernel which is bigger
> *and* slower.

I am not getting into this debate, just wanted to point out that
effect of compiler optimization on UNIX kernels have been studied
before. One paper I recall is -

They used prfile-guided optimization, so that is whole another angle altogether.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:32    [W:0.067 / U:1.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site