Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965353AbXATTop (ORCPT ); Sat, 20 Jan 2007 14:44:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965354AbXATTop (ORCPT ); Sat, 20 Jan 2007 14:44:45 -0500 Received: from ug-out-1314.google.com ([66.249.92.169]:57898 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965353AbXATToo (ORCPT ); Sat, 20 Jan 2007 14:44:44 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Fogh56gdjy/CwwmS4VIObD9iMzo4L9/MTZf2kWooQgPj/dyN1JHfP70AfaQ3P37l/xFD1vxh4nNvxxxqdlxtJootwPc4rEq6RCMNl8GgQQswr7GLujd2PENwXctL26z5uQ2Jup+m+w/SfdXwlFhbYsyxBYZP3R1+6zgEgCPjef8= Message-ID: <8355959a0701201144x290362d8ja6cd5bc1408475da@mail.gmail.com> Date: Sun, 21 Jan 2007 01:14:41 +0530 From: "Sunil Naidu" To: "Willy Tarreau" Subject: Re: Abysmal disk performance, how to debug? Cc: "=?ISO-8859-1?Q?Ismail_D=F6nmez?=" , linux-kernel@vger.kernel.org In-Reply-To: <20070120180344.GA23841@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200701201920.54620.ismail@pardus.org.tr> <20070120174503.GZ24090@1wt.eu> <200701201952.54714.ismail@pardus.org.tr> <20070120180344.GA23841@1wt.eu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 954 Lines: 28 On 1/20/07, Willy Tarreau wrote: > > > > > > It is not expected to increase write performance, but it should help > you do something else during that time, or also give more responsiveness > to Ctrl-C. It is possible that you have fast and slow RAM, or that your > video card uses shared memory which slows down some parts of memory > which are not used anymore with those parameters. I did test some SATA drives, am getting these value for 2.6.20-rc5:- [sukhoi@Typhoon ~]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 21.0962 seconds, 50.9 MB/s What can you suggest here w.r.t my RAM & disk? > Willy Thanks, ~Akula2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/