svn commit: r188439 - head/release
nick at van-laarhoven.org
Tue Feb 10 08:19:16 PST 2009
> 2009/2/10 Ken Smith <kensmith at cse.buffalo.edu>:
> > I wouldn't mind if it got turned on but that's just the first of two
> > questions. The second question is what to set it to. What's best for
> > that depends on how many CPUs you've got and/or how much of your
> > machine you want the build to consume (you might want to be doing other
> > stuff on the machine while the build is running...). IMHO it might be
> > best to just leave it as-is and let anyone interested in getting better
> > performance set it to what's appropriate for their machine but if
> > others feel differently I won't object.
> I was think more about the semi-supported state that the -jX
> traditionally has - it's usually something like "yes, it's there and
> probably everyone uses it but we won't even suggest it actually
> works". Having it on in the official release process will signal
> official support to users and encourage them to use it.
With the advent of multiple cores it is well worth doing at least a
-j`sysctl -n kern.smp.cpus`
(assuming that value is always available, even in the non-SMP case) so the
parallel build gets exercised.
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