On Wed, 27 Feb 2013, Frederico Costa wrote:

On 2013-02-27 22:27, Michael Ross wrote:
If I read you right, you didn't ``make -jX buildworld'',
with X being the number of processes to spawn,
so you used just one core on either machine.

Buildworld does a lot of I/O, so disk speed is relevant.

Yes, i just made "make buildworld".

So i should use make -j2 on the S1(dual core) and -j4 on S2 (2xdualcore)?

And it also makes sense what you say about the I/O.

It really depends on the system. On my dual-core systems, I use devel/ccache and found that -j8 gave the best performance.
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