Gentoo Archives: gentoo-performance

From: Cory Grunden <cory.grunden@×××××.com>
To: gentoo-performance@l.g.o
Subject: [gentoo-performance] Re: Digest of issue 13 (100-109)
Date: Fri, 11 May 2007 14:16:50
> 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 >
Some things that I believe help with startup time are: -Os and LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed" In order to use the new --hash-styles, you need at least
>=binutils-2.17.50.X, which is keyworded with -*
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