Gentoo Archives: gentoo-amd64

From: Brian Litzinger <brian@××××××××××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] x86_64 optimization patches for glibc.
Date: Sat, 23 Jul 2005 18:46:04
Message-Id: 20050723184442.GA17480@localhost
In Reply to: Re: [gentoo-amd64] x86_64 optimization patches for glibc. by Allan Wang
> On Sat, 2005-07-23 at 16:48 +0200, Simon Strandman wrote: > > With the glibc 2.3.5 currently in gentoo I get: > > isidor ~ # ./memcpy 2200 1000 1048576 > > Memory to memory copy rate = 1291.600098 MBytes / sec. Block size = 1048576. > > > > But with glibc 2.3.5 + amd64 optimized strings I get: > > isidor ~ # ./memcpy 2200 1000 1048576 > > Memory to memory copy rate = 2389.321777 MBytes / sec. Block size = 1048576. > > > > That's an improvement of over 1000mb/s! Suse 9.3 also gives about > > 2300mb/s out of the box.
pre: ./memcpy 2000 1000 1048576 Memory to memory copy rate = 1302.701782 MBytes / sec. Block size = 1048576. post: ./memcpy 2000 1000 1048576 Memory to memory copy rate = 2051.979980 MBytes / sec. Block size = 1048576. AMD64 3200+ 2.0GHz 1024MB PC2700 Compaq R3240US -- gentoo-amd64@g.o mailing list

Replies

Subject Author
Re: [gentoo-amd64] x86_64 optimization patches for glibc. Luke-Jr <luke-jr@×××××××.org>