distcc only builds locally when using rpmbuild

[Suvayu Ali]

On Sun, May 31, 2015 at 03:29:29PM -0400, Sam Varshavchik wrote:
> Suvayu Ali writes:
> 
> >On Sun, May 31, 2015 at 01:24:07PM -0400, Sam Varshavchik wrote:
> >>
> >> >> ps shows the maximum number of "/usr/bin/distcc /usr/bin/g++ [options]"
> >> >> processes running locally, that I but nothing gets distributed to other
> >> >> hosts.
> >>
> >> I've got distcc configured for 10 concurrent builds. 4 local, 6 distributed
> >> to another host. I see ten distcc processes on the local machine during the
> >> rpmbuild, /var/log/messages on the other host shows nothing – it logs
> >distcc
> >> server activity otherwise – and the local host appears to be running only
> >> four concurrent compiles.
> >
> >Are you running under mock?  Maybe chroot is preventing remote builds?
> 
> No, this is an ordinary rpmbuild.

How does rpmbulid decide how many threads to run?  I think it looks at
the local machine and decides.  I also recall some variable called
RPMBUILD_NCPU or something like that.  That would explain why it only
uses as many threads as the local machine can handle.

Hope this helps,

-- 
Suvayu

Open source is the future. It sets us free.