From mboxrd@z Thu Jan 1 00:00:00 1970 From: Willy Gardiol Subject: Re: IDE-RAID Drive Performance Date: Wed, 31 Dec 2003 10:28:22 +0100 Sender: linux-ide-owner@vger.kernel.org Message-ID: <200312311028.36222.willy@gardiol.org> References: Reply-To: willy@gardiol.org Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from [213.140.2.58] ([213.140.2.58]:45499 "EHLO ms004msg.fastwebnet.it") by vger.kernel.org with ESMTP id S263653AbTLaJ2m convert rfc822-to-8bit (ORCPT ); Wed, 31 Dec 2003 04:28:42 -0500 In-Reply-To: Content-Description: clearsigned data Content-Disposition: inline List-Id: linux-ide@vger.kernel.org To: Nicklas Bondesson , 'Mark Hahn' Cc: linux-ide@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Now it sounds good! If you are trying a raid0 please send bonnie's results for it... i am=20 interested! bye Alle Wednesday 31 December 2003 00:26, Nicklas Bondesson ha scritto: > It was the PCI latency value that was wrong. It was set to 0 in the B= IOS so > I have changed it now to 64. I now get the following figures! :) > > hdparm: > > /dev/hda: > Timing buffer-cache reads: 128 MB in 1.12 seconds =3D114.29 MB/se= c > Timing buffered disk reads: 64 MB in 1.53 seconds =3D 41.83 MB/sec > > bonnie: > > Version 1.02b ------Sequential Output------ --Sequential Input- > --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- > --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP= /sec > %CP > gollum 800M 4681 98 37827 76 17590 30 4888 95 39400 26= 310.4 > 3 > ------Sequential Create------ --------Random > Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- > -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP= /sec > %CP > 16 310 99 +++++ +++ 21319 100 329 99 +++++ +++= 1766 > 96 > gollum,800M,4681,98,37827,76,17590,30,4888,95,39400,26,310.4,3,16,310= ,99,++ >+ ++,+++,21319,100,329,99,+++++,+++,1766,96 > > Thanks for the help! > > /Nicke > > -----Original Message----- > From: Mark Hahn [mailto:hahn@physics.mcmaster.ca] > Sent: den 30 december 2003 19:14 > To: Nicklas Bondesson > Subject: Re: IDE-RAID Drive Performance > > > The disks are setup with hdparm at boot time: > > not normally necessary or desirable. > > > /dev/hda: > > Timing buffer-cache reads: 128 MB in 1.13 seconds =3D113.27 MB/= sec > > Timing buffered disk reads: 64 MB in 2.46 seconds =3D 26.02 MB/s= ec > > the 113 indicates that you're running on a fairly old/slow host. > as such, you cannot expect to achive the full disk bandwidth, though = you > can probably do better than this by tweaking w/blockdev. > it's also worth checking your bios settings (pci latency too low?) > > > - > To unsubscribe from this list: send the line "unsubscribe linux-ide" = in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html - --=20 !=20 Willy Gardiol - willy@gardiol.org www.gardiol.org Use linux for your freedom. "Cari fratelli dell'altra sponda cantammo in coro gi=F9 sulla terra amammo in cento l'identica donna partimmo in mille per la stessa guerra. Questo ricordo non vi consoli quando si muore si muore soli." (Il Testamento, Fabrizio De Andr=E8) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/8pbDQ9qolN/zUk4RAj8VAJ4sI1Urzrl7BVdP939M7waBcDoXGQCcCHQp ehyNRhY/XP4kjG9l0vtBl7g=3D =3DyGM2 -----END PGP SIGNATURE-----