From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1Dx2s0-0004YE-RP for garchives@archives.gentoo.org; Mon, 25 Jul 2005 13:19:49 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j6PDHtAH012750; Mon, 25 Jul 2005 13:17:55 GMT Received: from smtp.gentoo.org (smtp.gentoo.org [134.68.220.30]) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j6PDEGeN017416 for ; Mon, 25 Jul 2005 13:14:16 GMT Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by smtp.gentoo.org with esmtp (Exim 4.43) id 1Dx2nb-0003g9-9H for gentoo-user@lists.gentoo.org; Mon, 25 Jul 2005 13:15:15 +0000 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1Dx2mp-0005yp-Sr for gentoo-user@gentoo.org; Mon, 25 Jul 2005 15:14:34 +0200 Received: from www.buffer.net ([24.73.161.102]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 25 Jul 2005 15:14:27 +0200 Received: from wireless by www.buffer.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 25 Jul 2005 15:14:27 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org From: James Subject: [gentoo-user] Re: /dev/hdb performance really sucks ... Date: Mon, 25 Jul 2005 13:13:03 +0000 (UTC) Message-ID: References: <000001c590f2$b96fe290$0400a8c0@ECRM> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: main.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 24.73.161.102 (Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050723) Sender: news X-Archives-Salt: 6fbbf7f4-4fb1-4d5c-bc8f-ce300d4865b7 X-Archives-Hash: a9ea1c02381bafdb8772ad19c0022339 Richard Watson bigpond.net.au> writes: > Hi - I'm getting vastly different performance results on hda (master) as > opposed to hdb (slave). > Any suggestions would be appreciated. I'd make sure you read the man page on hdparm. Certain actions can kill hardware, permanently. That said, what I do is set the hdparms in /etc/conf.d/hdparm. I believe you can test each drive, note the best (safe) parameters to adjust. Test the adjustments, and then make an entry, per hard drive in the /etc/conf.d/hdparm. Here's what works for me on one system: all_args="-d1" hda_args="-d1 -u1 -c1 -a256" Remember, any device that is seen as a /dev/hd* will be affected by settings like [all_args="-d1"]...... If get lesser performance when (2) different drives are on the same (ide/ata/eide) controller, then try a second pci cotroller card. or if both are on the same cable, and the MB or controller has a second port, add a second cable and move one drive to the other port/cable. This sort of performance degradation should effect both drives. HTH James -- gentoo-user@gentoo.org mailing list