Gentoo Archives: gentoo-user

From: Neil Bothwick <neil@××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: aligning SSD partitions
Date: Fri, 07 Sep 2012 19:52:58
Message-Id: 20120907204842.03d18426@hactar.digimed.co.uk
In Reply to: Re: [gentoo-user] Re: aligning SSD partitions by Dale
1 On Fri, 07 Sep 2012 07:25:42 -0500, Dale wrote:
2
3 > Since when you run emerge it loads everything into ram,
4 > regardless of whether portages work directory is on tmpfs or not, it
5 > doesn't matter. This test is NOT about portage loading things into ram
6 > WHILE emerging, it was about having the work directory on tmpfs and
7 > speed.
8
9 Of course it doesn't. The tarball is unpacked from DISTDIR to the work
10 directory. Then individual source files in the work directory are
11 compiled to object files, also in the work directory. Then those object
12 files are linked to executables, also in the work directory. Finally,
13 everything is install to an image directory, also on TMPDIR. The speed of
14 the work directory would appear to be of critical importance - but it
15 isn't, as shown by your tests. The reason for this, and the point
16 everyone else has been making, is because the files are cached by the
17 kernel, so the filesystem is less important if you have enough RAM.
18
19
20 --
21 Neil Bothwick
22
23 30 minutes of begging is not considered foreplay.

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