Re: Testsuite ad RedHat 7

[jfm2 at club-internet dot fr]

> 
> Hi there,
> 
> > Note that the 2.95 branch is fairly good. It is *quite* known that gcc 2.95
> > has issues with optimizations larger than -O2.
> 
> is there a paper out that, which describes or mentiones what are the
> does and don'ts with gcc-2.95.2 and higher optimizations or
> archichtectural optimizations ?
> 

No you have to play by ear :-( :-(

> > 
> > One goal of 3.0 is to get things more stable in that regards.
> > 
> > Who would dare to use large optimizations on gcc 2.95.x except for those
> > daredevil linux people anyways ?
> 
> Let's put it this way, why there are people out there who are willing to
> pay a more than 50percent price rise in the tag for a 5 or 10 percent
> faster processor ? There is great potential in tailoring the distro's or
> better to say the time critical apps to a certain extent to specific
> processors and their futures. 
> 
> If I can gain 10 percent of speed if using another set of compiler
> switches or another compiler, why shouldn't I do this when gaining this
> percent in hardware may double the cost of the cpu ? The potential of
> some cpu's on the market (i.e. athlon, duron, thunderbird) is quite huge
> when the software is compiled with the right compiler and or the right
> optimization switches.
> 
> As of now there is little market for distros which are allegedly faster
> due to their optimization for a specific processor set. But eying the
> price differences in cpu's there should and will be mor emphasiz in the
> future. Gaining a couple of percent's maybe of extensive costs on the
> hardware side and maybe obtained for free when using the right flags....
> 
> So why there are not more distros which ships in different cpu flavors ?
> Maybe it is because at the moment the competition is not very dense.
> Maybe the compiler builders are happy when they get stable code through,
> not to speak of fast one.
> 

RedHat ships glibc (and perhaps some other crucial components) in both
386 and 686 versions.

-- 
			Jean Francois Martinez

Project Independence: Linux for the Masses
http://www.independence.seul.org