22 Oct
2009
22 Oct
'09
11:15 p.m.
On Thu, Oct 22, 2009 at 5:54 PM, André Ramaciotti da Silva
On Thu, Oct 22, 2009 at 11:06:32PM +0200, Thomas Bächler wrote:
Sascha Siegel schrieb:
Hi,
can someone tell my whats the reason for building the arch-kernel with "# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set"?
Thank you!
Optimizing for size sacrifices performance. Read the gcc documentation about the -O{1,2,3,s} options.
I don't know if it is as simple as that. I recall reading somewhere that under certain circumstances a binary optimized with -Os is faster than a binary optimized with -O2.
The reason for this is that a smaller binary may load faster than a big one and cause less page faults.
I really doubt the kernel is even close to the boundary for something like this