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Message-ID: <3E060D8B.5060208@redhat.com>
Date: Sun, 22 Dec 2002 11:07:55 -0800
From: Ulrich Drepper <drepper@redhat.com>
Organization: Red Hat, Inc.
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To: Linus Torvalds <torvalds@transmeta.com>
CC: "James H. Cloos Jr." <cloos@jhcloos.com>, linux-kernel@vger.kernel.org
Subject: Re: Intel P6 vs P7 system call performance
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Linus Torvalds wrote:

> Uli, do you make public snapshots available so that people can test the
> new libraries and maybe see system-wide performance issues?

It is already available.  I've announced it on the NPTL mailing list a
couple of days ago.  There is no support without NPTL since the TLS
setup isn't present in sufficient form in the LinuxThreads code which
has to work on stone-old kernels.  But the NPTL code is more than stable
enough to run on test systems.  In fact, I've a complete system running
using it.

Announcement:

https://listman.redhat.com/pipermail/phil-list/2002-December/000387.html

It is not easy to build glibc and you can easily ruin your system.  You
need very recent tools, the CVS version of glibc and the NPTL add-on.
See for instance

https://listman.redhat.com/pipermail/phil-list/2002-December/000352.html

for a recipe on how to build glibc and how to run binaries using it
*without* replacing your system's libc.  There have been That's save but
still the build is demanding.  I know I'll be lynched again for saying
this, but it's the only experience I have: use RHL8 and get the very
latest tools (gcc, binutils) from rawhide.  Then you should be fine.

If there is interest in RPMs of the binaries I might _try_ to provide
some.  But this would mean replacing the system's libc.

-- 
--------------.                        ,-.            444 Castro Street
Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------

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