Gentoo Archives: gentoo-performance

From: Andrea Pretto <prettz_it@×××××.it>
To: gentoo-performance@l.g.o, hackeron@×××××××××.com
Subject: Re: [gentoo-performance] How is it possible ???
Date: Sun, 27 Jun 2004 08:48:44
Message-Id: 20040627084840.84012.qmail@web25107.mail.ukl.yahoo.com
In Reply to: Re: [gentoo-performance] How is it possible ??? by Roman Gaufman
I'm just rebuilting my system with that optimizations.

Thanks!
--- Roman Gaufman <hackeron@×××××××××.com> ha scritto:
> Well, higher optimization (-O) number, normally > means more ram is used and the > CPU cache is flooded more. > > I bet your Athlon's core is only 256Kb cache or > less. Run > cat /proc/cpuinfo ... -O3 seems good for 512Kb or > more, but uses more ram. So > try recompiling gnome with -O2 or -Os ... Dont be > mis-leaded by the number 2, > it has a lot of optimization. And -Os is like -O3 > but ensures that if > optimization increases file size or ram usage, it > isnt used, so you can lose > some optimization but gain a few Mb in filesize. > > I find on low cache CPUs, with not much ram, -Os is > the way to go, and I run > -Os on my Epia Via 1ghz Nehemiah core, and it runs > very noticeably snappier > than with -O3. > > Anyway, hope that helps. > > > On Saturday 26 June 2004 18:05, Andrea Pretto wrote: > > Hi > > > > I have a gentoo installed and it works very well. > > Without X it start from boot to login in 15 > seconds, > > and it uses about 15 mb of ram. > > Ok. It's very fast and "cheaper" than Slackware > and > > others...... > > > > Now I have installed gnome ( 2.6.0 ) and it's very > > strange.......... > > Only with GDM started (before to login) the system > > uses about 85mb of ram, and (the gdm) start 3-4 > > seconds slower than slackware.........the > situation is > > worrisome...... > > > > I insert the name and password so gnome > > starts.................and even gnome starts 6-7 > > seconds slower than slackware and the ram used go > up > > to 140mb. > > Now the situation is disastrous.... > > > > How is it possible ??? > > Why this horrible performance ??? > > Is it a guilt of gnome 2.6 ??? > > > > My emerge info as follow: > > > > Portage 2.0.50-r8 (default-x86-2004.0, gcc-3.3.3, > > glibc-2.3.3.20040420-r0, 2.4.26) > > >
=================================================================
> > System uname: 2.4.26 i686 AMD Athlon(tm) XP 2600+ > > Gentoo Base System version 1.4.16 > > Autoconf: sys-devel/autoconf-2.59-r3 > > Automake: sys-devel/automake-1.8.3 > > ACCEPT_KEYWORDS="x86" > > AUTOCLEAN="yes" > > CFLAGS="-O3 -march=athlon-xp -pipe > > -fprefetch-loop-arrays -funroll-loops -fPIC > > -maccumulate-outgoing-args -minline-all-stringops > > -mfpmath=sse " > > CHOST="i686-pc-linux-gnu" > > COMPILER="gcc3" > > CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb > > /usr/kde/2/share/config /usr/kde/3/share/config > > /usr/lib/mozilla/defaults/pref /usr/share/config > > /usr/share/texmf/dvipdfm/config/ > > /usr/share/texmf/dvips/config/ > > /usr/share/texmf/tex/generic/config/ > > /usr/share/texmf/tex/platex/config/ > > /usr/share/texmf/xdvi/ /var/qmail/control" > > CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo > > /etc/env.d" > > CXXFLAGS="-O3 -march=athlon-xp -pipe > > -fprefetch-loop-arrays -funroll-loops -fPIC > > -maccumulate-outgoing-args -minline-all-stringops > > -mfpmath=sse " > > DISTDIR="/usr/portage/distfiles" > > FEATURES="autoaddcvs ccache sandbox" > > GENTOO_MIRRORS="http://gentoo.oregonstate.edu > > >
http://distro.ibiblio.org/pub/Linux/distributions/gentoo"
> > MAKEOPTS="-j2" > > PKGDIR="/usr/portage/packages" > > PORTAGE_TMPDIR="/var/tmp" > > PORTDIR="/usr/portage" > > PORTDIR_OVERLAY="" > > SYNC="rsync://rsync.gentoo.org/gentoo-portage" > > USE="3dnow apm audiofile berkdb cdr cjk directfb > doc > > emacs encode esd foomaticdb gdbm gnome gpm gtk > gtk2 > > guile imlib ipv6 java libg++ libwww mad memlimit > > mikmod mmx mozilla mpeg ncurses oggvorbis opengl > oss > > python readline slang spell sse ssl svga tcpd > tetex > > truetype x86 xml2 zlib" > > > > thanks in advance. > > > > > > > > > > > > > > >
____________________________________________________________
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Re: [gentoo-performance] How is it possible ??? Andrea Pretto <prettz_it@×××××.it>