> On Sun, Nov 30, 2014 at 04:01:29PM -0700, Jonathan E. Brickman wrote:
> > I just saw some amazing improvement on this laptop (2GHz, 2G RAM,
> > dual-core, >5 years old) by recompiling kernel and glibc in Debian
> > Testing (Jessie) with optimizations for this CPU.
> I wonder if there could be an alternate way of selecting glibc with
> dpkg
> to tell it to always recompile from source with -march=native
> -mtune=native
> ?
As it happens, most of this is what apt-build can be set up to do, it's
basically a recompiling front end to apt-get. I am taking it relatively slow,
and my previously built glibc is doing very well indeed, so have not yet gone
there. I tried apt-build on iceweasel first; however, unless the optimization
changes are hidden somehow, apt-build appears unable to override the Mozilla
build system's defaults. Not too surprising, I have heard a lot about Mozilla
having its own very special sauces and I wouldn't necessarily expect them to be
changeable in Debian-standard (or Debian-quasistandard?) ways. But then I tried
apt-build on gtk2 and gtk3, saw everything appearing correctly during the
build, and got two more lovely jolts of speed (I'm running the MATE desktop).
So I'll be trying lots more things soon :-)
--
Jonathan E. Brickman
Ponderworthy Music | [email protected] | (785)233-9977 |
http://ponderworthy.com
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