On Tue, Feb 07, 2012 at 07:05:04PM +0000, Christian Weisgerber wrote: > Joe Gidi <j...@entropicblur.com> wrote: > > > I just built a new box with one of AMD's FX-8120 8-core processors and > > wanted to stress-test it a bit. I installed the Feb 6 amd64 snapshot, > > checked out a src tree, and had no trouble compiling GENERIC.MP. I tried > > compiling userland with "make -j8 build" and the box hung. > > > > Before I go further in depth with troubleshooting, I'd just like to know > > if this "should" work properly on good hardware. > > Yes, it should. I've certainly done it before. > It's possible that there are some build races left somewhere that > could cause the build to error out on occasion. But the box hanging > is not expected.
Sorry, I should have said that too. Builds failing are possible. The box hanging is a problem. .... Ken > > > Also, is there a maximum number of make jobs that should work? > > High numbers might reveal some lingering problems in the Makefiles. > More importantly, contention for the big kernel lock will limit the > amount of concurrency that is achievable. make build scales > reasonably well to -j4, but with -j8 you're well into the range of > sadly diminished returns. > > -- > Christian "naddy" Weisgerber na...@mips.inka.de
