Gentoo Archives: gentoo-user

From: Nikos Chantziaras <realnc@×××××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Re: Best way to improve interactivity with heavy disk activity?
Date: Sun, 28 Nov 2010 19:16:44
Message-Id: icu9n3$7dk$1@dough.gmane.org
In Reply to: Re: [gentoo-user] Re: Best way to improve interactivity with heavy disk activity? by App Deb
1 On 11/28/2010 08:53 PM, App Deb wrote:
2 > On Sun, Nov 28, 2010 at 7:39 PM, walt<w41ter@×××××.com> wrote:
3 >
4 >> I'm confused about which of all these various mechanisms apply to single-cpu
5 >> machines. AFAICT Con's BFS (e.g.) is really a CPU scheduler and doesn't
6 >> affect
7 >> single-cpu machines very much. What about CFQ and group scheduling?
8 >> Others?
9 >>
10 >> Thanks for any clues.
11 >
12 > Don't mix them,
13 >
14 > CFS --> upstream official CPU scheduler (also supports cgroups, that
15 > got used in the 200line patch, which is useless imo)
16 > CFQ --> upstream official I/O (disk) scheduler (afaik the only one
17 > that supports "ionice")
18 >
19 >
20 > BFS --> ck's CPU scheduler
21 > (I don't know what i/o scheduler ck's patchset uses)
22
23 The i/o scheduler doesn't change.