Gentoo Archives: gentoo-user

From: Neil Bothwick <neil@××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] is multi-core really worth it?
Date: Wed, 22 Nov 2017 08:23:46
Message-Id: 20171122082330.2ac995a7@digimed.co.uk
In Reply to: Re: [gentoo-user] is multi-core really worth it? by Jeremi Piotrowski
1 On Wed, 22 Nov 2017 08:26:01 +0100, Jeremi Piotrowski wrote:
2
3 > That being said: if you do a world rebuild you will have lots of
4 > packages that spend ~40 seconds doing their autoconf run, only to build
5 > 2-3 sources files. On an 8-core machine at work, I get good results
6 > using parallel emerge jobs (emerge -jX). For your 6-core AMD CPU
7 > (assuming it actually has 12 threads) I'd start with 'emerge -j3' and
8 > MAKEOPTS='-j12 -l16'. That should get you a nice speedup, but may
9 > require a bit more ram.
10
11 Instead of specifying a number of jobs with "-j 3" you can let portage
12 work it out. On a similar system, I use
13
14 EMERGE_DEFAULT_OPTS="--jobs --load-average 12"
15
16
17 --
18 Neil Bothwick
19
20 "An investment in knowledge always pays the best interest." - Benjamin
21 Franklin