Re: glibc recompile - optimized for G5 cpu target
Hi again.
Once my Gentoo is up and running, I will have two almost independent
Linux boot options.
Also, I choose btrfs for my root file systems for the first time. I will
be playing with making snapshots shortly.
Obviously this all takes time. And the end of Christmas vacation time is
coming closer.
I am not an expert either and Debian is for me a "just use don't bother"
option that I wanted to have, as some kind of rescue system for the case
my Gentoo installation doesn't work any more. But it could be the other
way around as well.
Once everything is working, I will make snapshots.
Should I mess up my Debian, I can always boot into Gentoo, reset the
file system to the last working snapshot and try again… or give up :-(...
Anyway, this is probably the best option to try a self compiled glibc.
But first, I want the nouveau driver running…
Regards,
Andreas.
Am 2016-01-05 um 01:02 schrieb Peter Saisanas:
> Hi,
> This has been playing in my mind for a while and wondering if i could
> get some feedback from others.
>
> I assume glibc typically available in the Debian repo's has been
> compiled for a generic ppc32 target and the ricer in me wants to try
> and extract some more performance.
>
> If i were to recompile glibc and target it for a G5 cpu with
> optimizations (i.e. o3, altivec, etc, etc), do you think there could
> be much benefit in terms of improved general performance and
> responsiveness of a typical desktop install of Debian on PPC?
>
> Perhaps this is more a question of is the latest gcc available in
> Debian testing able to improve performance of glibc if compiled
> specifically for G5 target (-n32 i assume) instead of a generic ppc32
> target (which i assume is typically what Debian packages are compiled
> for).
>
> I have found a guide which obviously was originally for intended for
> x86, but could be a starting point as an experiment for myself.
> Link below:
> http://notes.ponderworthy.com/rebuild-glibc-optimized-for-your-cpu-in-debian-testing-as-a-local-package-version
>
>
> I realize this is pretty risky and i stand a good chance of hosing my
> install but just wondering if others had some experience attempting
> this possibly before i waste my time.
>
> Just as equally as i stand a chance of hosing my install, i guess it
> can also perform worse than or be unstable. Who knows?
>
> I know, this is more a Gentoo thing and unsupported (just as
> unsupported as custom kernels on Debian).
> Looking for advice if you think this is worthwhile! At minimum, it
> would be a good learning experience for myself.
>
> Regards,
> Peter
>
>
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