Optimizing "make release"
brooks at freebsd.org
Mon Sep 24 07:48:03 PDT 2007
On Mon, Sep 24, 2007 at 01:34:34PM +0200, Erik Cederstrand wrote:
> In an effort to run benchmarks on the latest CURRENT on a couple of slave
> machines, I need to build the distribution sets necessary for an NFS install
> as fast as possible (the slaves are installing over PXE), but still ending
> up with something as close as possible to a normal default installation on
> the slaves.
> Right now, I'm doing a very basic run to create the distribution sets (using
> a default make.conf and a 6.2-STABLE build machine):
> # /cd /usr/src
> # csup /etc/current-supfile
> # make buildworld
> # cd /release
> # make release BUILDNAME=CURRENT-YYYYMMDDHHMMSS CVSROOT=/home/ncvs
> Using the above commands, a lot of stuff gets compiled unnecessarily, and
> the process takes 5-6 hours on a 2GHz P4. I'd like to cut that to 2 hours
> max. I tried to use some of the NO_* settings in make.conf, but it's not
> clear to me what I can omit. Some things are needed later in make release
> (e.g. NO_CXX) even though I don't need a C++ compiler on the slave systems.
> I also looked a ccache, but I consider it somewhat dangerous, since I need
> to have an absolutely correct, reproducible installation rather than a fast
> If I ignore documentation distfiles (will this affect benchmarks in any
> way?), AFAICT the only distribution sets I need are base, proflibs, kernels
> and (maybe) lib32. Is there a way to get "make release" to do just that? I'm
> open to other suggestions, of course.
To just create a working image you can just do:
make DESTDIR=/target/directory installworld
make DESTDIR=/target/directory distribution
make DESTDIR=/target/directory installkernel
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