From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1P3Z68-0006cs-Ih for garchives@archives.gentoo.org; Wed, 06 Oct 2010 18:52:16 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6BF37E0809; Wed, 6 Oct 2010 18:52:11 +0000 (UTC) Received: from mx01.admin-box.com (mx01.admin-box.com [78.47.249.108]) by pigeon.gentoo.org (Postfix) with ESMTP id 3F696E0809 for ; Wed, 6 Oct 2010 18:52:11 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mx01.admin-box.com (Postfix) with ESMTP id 6CDB934A6150 for ; Wed, 6 Oct 2010 20:52:10 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mx01.admin-box.com Received: from mx01.admin-box.com ([127.0.0.1]) by localhost (mx01.admin-box.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nMDRNxOEOYPI for ; Wed, 6 Oct 2010 20:52:08 +0200 (CEST) Received: from [192.168.0.137] (g231224255.adsl.alicedsl.de [92.231.224.255]) (Authenticated sender: daniel@troeder.de) by mx01.admin-box.com (Postfix) with ESMTPSA id E0AAD349FD49 for ; Wed, 6 Oct 2010 20:52:07 +0200 (CEST) Message-ID: <4CACC555.309@admin-box.com> Date: Wed, 06 Oct 2010 20:52:05 +0200 From: Daniel Troeder User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100929 Thunderbird/3.1.4 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Normal disk speed? References: <201009301853.28825.volkerarmin@googlemail.com> <4CA5A440.80601@admin-box.com> <4CA76BF0.8040800@admin-box.com> In-Reply-To: X-Enigmail-Version: 1.1.2 OpenPGP: id=BB9D4887; url=http://pgpkeys.pca.dfn.de/pks/lookup?search=0xBB9D4887&op=get Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig46639D699D62E27BA66F0ECC" X-Archives-Salt: a1dfd6c9-e067-4112-9fcf-41c622a97e5d X-Archives-Hash: 42a977e2352c0ac852ccede4acd247ca This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig46639D699D62E27BA66F0ECC Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 10/06/2010 10:04 AM, Adam Carter wrote: > FYI some braindead benchmarking, reiserfs vs ext4, kernel 2.6.35-gentoo= -r8 >=20 > Copy same DVD image from internal reiserfs drive to freshly formatted > external drive; > reiserfs 1m37.530s > ext4 3m15.074s >=20 > Then image copy on that external drive; > # time cp CentOS-5.3-x86_64-bin-DVD.iso CentOS-5.3-x86_64-bin-DVD.iso2 > # time cp CentOS-5.3-x86_64-bin-DVD.iso CentOS-5.3-x86_64-bin-DVD.iso3 > reiser 1m44.719s and 1m51.441s > ext4 3m24.337s and 4m30.534s >=20 > Not that is matters, but create filesystem on 2TB drive; > reiserfs 1m17.373s > ext4 6m3.421s =20 >=20 > Didnt see that coming, I guess i'll stick with reiser3.... WOW! Those differences are crazy! Please - I know benchmarking takes a lot of time - but could you check something: the behavior those fs have at what time they flush data from cache to disk is very different. Have you made sure that you measured the time it really needs? I mean the difference between: $ sync; time cp source dest and $ sync; time (cp source dest; sync) Only the last measures somewhat correctly. I'm irritated, because ext4 is extends based, and should behave much better with big files than reiser3... not only less fragmentation, but should also be faster... Bye, Daniel --=20 PGP key @ http://pgpkeys.pca.dfn.de/pks/lookup?search=3D0xBB9D4887&op=3Dg= et # gpg --recv-keys --keyserver hkp://subkeys.pgp.net 0xBB9D4887 --------------enig46639D699D62E27BA66F0ECC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkysxVYACgkQg3+4tbudSIcNDACcC+5nH+7nvN0bPmmzNzYZZvTx /EkAoIVEbb7AkwYAexRH5yN0Dqpx4AS8 =B7oY -----END PGP SIGNATURE----- --------------enig46639D699D62E27BA66F0ECC--