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Date: Mon, 03 Aug 2009 09:56:49 -0500
From: Dale <rdalek1967@gmail.com>
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Subject: Re: [gentoo-user] Re: make.conf MAKEOPTS=-j2
References: <20090802092037.6b380c87@osage.osagesoftware.com> <20090802172340.09916a8b@krikkit.digimed.co.uk> <20090802133741.3094df61@osage.osagesoftware.com> <h54kr8$g40$1@ger.gmane.org> <20090803121137.GA28457@waltdnes.org> <h56rfh$tcm$1@ger.gmane.org>
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Nikos Chantziaras wrote:
> On 08/03/2009 03:11 PM, Walter Dnes wrote:
>> On Sun, Aug 02, 2009 at 09:10:49PM +0300, Nikos Chantziaras wrote
>>
>>> Note that by doing so you will be using -j1 for every future version
>>> of duma. That means, if the problem gets fixed, you'll still be
>>> using -j1.
>>
>> Actually, I put -j1 into my make.conf after being bitten by -j2 a few
>> times. It doesn't slow down the emerge that much, and doesn't slow down
>> the compiled program at all. And the big thing is that it has probably
>> saved me from wasting time trying to track down weird emerge failures.
>
> Well, that's you. -j2 needs only 1/2 of the time to emerge things on
> this machine, and -j4 only 1/4 on a 4 core machine.
>
> So my advice for others is to not take Walter's advice and use -j1
> because "it doesn't slow down the emerge that much". It can slow it
> down. Up to four times slower.
>
>
>
But if he has a single CPU system, it won't matter that much. I have
always heard that it should be set to number of CPU's plus 1. Mine is
set to 2 since I have a single CPU rig.
This is one of those situations where it depends on the system you have.
Dale
:-) :-)