Gentoo Archives: gentoo-performance

From: Derek Tracy <tracyde@×××××.com>
To: gentoo-performance@l.g.o
Subject: Re: [gentoo-performance] Speeding up program starts with squashfs
Date: Wed, 09 May 2007 19:30:34
In Reply to: [gentoo-performance] Speeding up program starts with squashfs by Roman Zimmermann
You may want to look into using ReadAhead, some of the newer init systems
are using it to decrease boot time.

On 5/9/07, Roman Zimmermann <mereandor@×××××.com> wrote:
> > deer, list! > > I currently try to minimize the application startup-time for my > gentoo-laptop. > Even with prelink it takes about one minute to start kde and all programs > in > autostart due to the heavy disk i/o load. > In the last days I did some tests with taking a copy of my regular /usr > (ext3) > dir and storing it in a squashfs file. I then mount it as loopback device > on /usr. (Leaving the original copy still intact but hidden.) > > Those are the effects I try to achieve: > 1. The filesystem has no fragmentation at all. Files in my regular /usr > dir > are somewhat fragmented, but not too badly. > 2. It's compressed: less disk i/o and more cpu load. > > So far the results have been promising. With the new squashfs I'm down to > around 50 secs (-16%). But at the moment my benchmark methods are quite > primitve. I simply have a stopwatch nearby and meassure the time from > login > to when the disk is idle again. I'm looking forward to some input on this. > > greets > Roman > >
-- --------------------------------- Derek Tracy tracyde@×××××.com ---------------------------------


Subject Author
Re: [gentoo-performance] Speeding up program starts with squashfs Roman Zimmermann <mereandor@×××××.com>