[csw-maintainers] make -j60 package, parallel build possible? build8s 96% idle while building ...

James Lee james at opencsw.org
Fri May 15 11:13:57 CEST 2009


On 15/05/09, 09:54:56, Dagobert Michelsen <dam at opencsw.org> wrote regarding
Re: [csw-maintainers] make -j60 package, parallel build possible? build8s
96% idle while building ...:

> > -j 30 ? How many CPUs do you have in the machine? Reading of the GNU
> > make manual is recommended.

> > build8s% psrinfo
...
> > 31      on-line   since 04/06/2009 16:33:26

> I guess it is a good idea to save 2 CPUs for other users ;-)

Assuming another using isn't doing the same, ie, don't bother to
assume.


It's rare that the full complement of 32 threads is used for long
by real makefiles.



> AND: DO NOT DO THIS UNDER ANY CIRCUMSTANCE ON build8x OR ANY OTHER
> X86 MACHINE FROM THE FARM OR IT WILL CATCH FIRE!!


$ gmake -j $(psrinfo | wc -l) ...




James.



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