RFC: Optimizing for 386

[William Cohen]

Peter Backlund wrote:
> Has anyone been testing -Os (optimize for size) instead of -O2 on any
> greater scale? Fitting as much as possible in L1-cache is a great way to
> obtain high performance. 
> 
> /Peter Backlund 
> 
> 

The kernels in FC are currently compiled with -Os.

I worked with some North Carolina State University studenst testing 
something like this out this fall on Mozilla. They found some 
improvement in performance (reduction in L1 cache and instruction TLB 
misses). I have put the pdf report at:

http://people.redhat.com/wcohen/ncsu2004/Space%20Optimizations.pdf

-Will