From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p3UKXDoX137081 for ; Sat, 30 Apr 2011 15:33:13 -0500 Received: from mailsrv14.zmi.at (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 2F14A15CF5A8 for ; Sat, 30 Apr 2011 13:36:46 -0700 (PDT) Received: from mailsrv14.zmi.at (mailsrv1.zmi.at [212.69.164.54]) by cuda.sgi.com with ESMTP id Ob2XNjdmgm1xTzmx for ; Sat, 30 Apr 2011 13:36:46 -0700 (PDT) Received: from mailsrv.i.zmi.at (h081217106033.dyn.cm.kabsi.at [81.217.106.33]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "mailsrv2.i.zmi.at", Issuer "power4u.zmi.at" (not verified)) by mailsrv14.zmi.at (Postfix) with ESMTPSA id 3B521623 for ; Sat, 30 Apr 2011 22:36:45 +0200 (CEST) Received: from saturn.localnet (saturn.i.zmi.at [10.72.27.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mailsrv.i.zmi.at (Postfix) with ESMTPSA id E7CBB401C33 for ; Sat, 30 Apr 2011 23:36:41 +0200 (CEST) From: Michael Monnerie Subject: Re: xfs performance problem Date: Sat, 30 Apr 2011 22:36:39 +0200 References: <4DB72084.8020205@inf.ethz.ch> <4DB75C6D.1080901@inf.ethz.ch> <19898.53907.842827.480883@tree.ty.sabi.co.UK> In-Reply-To: <19898.53907.842827.480883@tree.ty.sabi.co.UK> MIME-Version: 1.0 Message-Id: <201104302236.43960@zmi.at> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============2401367912861276201==" Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com --===============2401367912861276201== Content-Type: multipart/signed; boundary="nextPart5961636.AKCYjGzS5C"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit --nextPart5961636.AKCYjGzS5C Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On Freitag, 29. April 2011 Peter Grandi wrote: > Despite decades of seeing it happen, I keep being astonished by > how many people (some with decades of "experience") just don't > understand IOPS and metadata and commits and caching and who > think "performance" is whatever number they can get with their > clever "benchmarks". Although I understand your arguing, the OP just said that with ext3 the=20 process returns after 22s, while on xfs he has to wait 2m20s to have the=20 command prompt back. That's not a benchmark, but user experience. I'm also surprised by that=20 big difference, and given the numbers are correct I would say ext3 does=20 something "better" here than xfs. I'd guess it's only an effect of=20 caching, and in thruth the disks are still running like crazy in the=20 background. But hey, if I decompress a kernel I'm more happy if it=20 returns after 22s and I can start "make menuconfig", than having to wait=20 2m20s. The damn thing should write in the background, that doesn't hurt=20 (in this specific case). =2D-=20 mit freundlichen Gr=FCssen, Michael Monnerie, Ing. BSc it-management Internet Services: Prot=E9ger http://proteger.at [gesprochen: Prot-e-schee] Tel: +43 660 / 415 6531 // ****** Radiointerview zum Thema Spam ****** // http://www.it-podcast.at/archiv.html#podcast-100716 //=20 // Haus zu verkaufen: http://zmi.at/langegg/ --nextPart5961636.AKCYjGzS5C Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEABECAAYFAk28ctsACgkQzhSR9xwSCbTQZQCghActc1Jo3QphH/AnLYFjRBnv 1RwAn2FJDMvq2jDy9PgA8YDmJYEoz5Fg =8gGN -----END PGP SIGNATURE----- --nextPart5961636.AKCYjGzS5C-- --===============2401367912861276201== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs --===============2401367912861276201==--