Re: [GIT PULL 0/9] perf/core improvements and fixes

From: Ingo Molnar
Date: Tue Oct 30 2012 - 05:14:40 EST



* Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:

> On Tue, 2012-10-30 at 09:18 +0100, Ingo Molnar wrote:
> > > > The optimal way, I guess, would be to have some cache file
> > > > with the results of such feature tests, that would be created
> > > > and then used till the build fails using its findings, which
> > > > would trigger a new feature check round, followed by an
> > > > automatic rebuild.

I did not write that.

I think making the feature tests parallel would be enough to
speed it all up - caching brings in a new set of problems. The
tests are mostly independent and the feature test makefile rules
could be parallelized like the object file rules.

> autoconf!! ;-)
>
> /me runs

hey, we build perf much faster than autoconf's 'configure'
script finishes running ;-)

Thanks,

Ingo
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