Re: debian ppc64
On Wed, Dec 08, 2004 at 11:03:37AM +0100, Andreas Jochens wrote:
> On 04-Dec-08 10:56, Benjamin Herrenschmidt wrote:
> > I'm pretty confident that the benchmarks will show a significant benefit
> > in having userland mostly 32 bits tho.
>
> I made some tests and compared a 32 bit powerpc
> chroot environment with a 64 bit ppc64 chroot environment on a
> PowerMac G5 running a 64 bit kernel. I could not find any significant
> differences so far. Within a few percent, the standard utilities appear
> to work at the same speed. Sometimes the 64 bit environment seems to
> be slightly faster. Of course those first results are not conclusive.
> I did not have time to make any rigourous benchmarks yet.
>
> > Anyway, first thing first is to get some relatively up to date glibc in
> > debian, without that, it's all useless. glibc had things like TLS/NPTL
> > support for ppc32 for ages for example, but debian doesn't have it.
>
> For my ppc64 porting efforts, I have patched Debian glibc up to current
> CVS. I had to sort out which of the 120 Debian patches still apply
> and found that about 90 of them are already in CVS or not needed anymore.
Yep, but this is not very usefull, if this effort is not integrated in the
global ppc64-debian effort. Upload of such packages to experimental, or to a
local repository is the way to go. Not individual hacking in an obscure
corner.
Friendly,
Sven Luther
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