There was actually a lot of misinformation and pure rubbish spread on
this list about that (my favourite was the guy with the distcc farm who
proudly boasted that the farm would compile anything faster than a
single debian or mandrake system could do so gentoo must be better!) -
unlike him I was present and can say what was done.  In that case,
debian and Mandrake WERE faster than gentoo - the figures are there in
black and white.

There was some good reasons for that result: I have been looking at this
closely since then and it seems that recommending CFLAGS from a "list"
based on hardware (what we did the first time) or what you read on this
list can be flawed - how many gentoo systems have been set up that way?

Also see here for another go which looked a bit better for gentoo, but
brought up a whole lot of factors no-one expected.

"http://www.linmagau.org/";  issue 9

My current thinking is you can go with something very mundane, and lose
only a fraction in ultimate performance, or ***test and tune*** which
seems to give max of ~10% in most cases (run time, not startup which is
a different case).  Just picking CFLAGS out of a hat will get the same
result as a lottery: winners and losers.  It also seems that some
applications will do better with one flagset, and others with a
different set.  You will also need to take the intended use into
account: is startup time more important, or knocking a few hours off a
batch job?  Then there's hardware ...

I suggest if you want to discredit it, you get some debian, Mandrake and
gentoo enthusiasts together and go for it.  It is what we did and was a
lot of fun, with all learning along the way.  Also having people
knowledgeable in each distro present means that there is less chance of
bias.

BillK

On Sun, 2003-11-02 at 22:09, Stroller wrote:
> On Nov 2, 2003, at 1:24 pm, Eric Marchionni wrote:
> 
> > what about that?
> > http://articles.linmagau.org/modules.php? 
> > op=modload&name=Sections&file=index&req=viewarticle&artid=227
> 
> It's not new & it's already been discredited empirically. The author  
> has posted here some time ago.
> 
> See http://tinyurl.com/tc3z and http://tinyurl.com/tc47
> 
> More interesting is this: http://www.gentoo.org/main/en/performance.xml
> 
> Stroller.
> 
> 
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