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Date: Thu, 27 Jan 2011 13:11:31 -0800
From: Bill Longman <bill.longman@gmail.com>
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Subject: Re: [gentoo-user] Re: Simultaneously emerging multiple packages with
 same dependencies
References: <AANLkTino2v7x98Ox-Mu-yDY10gJawg4hLW+tqobxjyJi@mail.gmail.com> <ihrs6p$oo6$1@dough.gmane.org> <20110127140525.GA4844@ksp.sk> <201101271512.50141.joost@antarean.org> <20110127181325.GA26616@ksp.sk> <4D41CA78.6020109@gmail.com> <ihsjnu$1n4$1@dough.gmane.org>
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On 01/27/2011 12:15 PM, Nikos Chantziaras wrote:
> 
> Btw, if you're using more instances than the amount of CPUs, the result
> will be slow-down.
> 
> With the default kernel scheduler, best if amount of CPUs + 1.  (On a
> 4-core, that's -j5).

And if you use emerge's "--jobs 2", each of those jobs will get the
MAKEOPTS values sent to it. So, if you have MAKEOPTS="-s -j4" and you
use "--jobs 2" with emerge, then you'll get two jobs running "gcc -s
-j4". Enjoy.