Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1945920AbWLVFaR (ORCPT ); Fri, 22 Dec 2006 00:30:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1945932AbWLVFaR (ORCPT ); Fri, 22 Dec 2006 00:30:17 -0500 Received: from wx-out-0506.google.com ([66.249.82.233]:49678 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1945920AbWLVFaP (ORCPT ); Fri, 22 Dec 2006 00:30:15 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=nFxSgdESMHNiLDvEiDYhz8Aqq5DZ7jW9Kprz0P99NraQIgtgiosEFAcqe0vJl2qyhdbkzqmLEHFl8J9GMQCk2/voM3EY/jFNjqlLch/efcLwyelnSjADqTeE834hHjpNBHNjBTxvfZVaCOyyOgLo/4liUDp4xDCPVqsnsHcB9u4= Message-ID: <652016d30612212130v433b4e70uc2148278c7ee7198@mail.gmail.com> Date: Fri, 22 Dec 2006 11:15:14 +0545 From: "Manish Regmi" To: "Bhanu Kalyan Chetlapalli" Subject: Re: Linux disk performance. Cc: kernelnewbies@nl.linux.org, linux-kernel@vger.kernel.org In-Reply-To: <7d15175e0612211614y3ce090fcn38cbcaced76b1024@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <652016d30612172007m58d7a828q378863121ebdc535@mail.gmail.com> <1166431020.3365.931.camel@laptopd505.fenrus.org> <652016d30612180439y6cd12089l115e4ef6ce2e59fe@mail.gmail.com> <20061218130702.GA14984@gateway.home> <652016d30612182222h7fde4ea5jbc0927c8ebeae76a@mail.gmail.com> <458788D7.2070107@yahoo.com.au> <652016d30612200317i6d33d097xe55971750e83cd97@mail.gmail.com> <7d15175e0612211614y3ce090fcn38cbcaced76b1024@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1071 Lines: 27 On 12/22/06, Bhanu Kalyan Chetlapalli wrote: > > I am assuming that your program is not seeking inbetween writes. > > Try disabling the Disk Cache, now-a-days some disks can have as much > as 8MB write cache. so the disk might be buffering as much as it can, > and trying to write only when it can no longer buffer. Since you have > an app which continously write copious amounts of data, in order, > disabling write cache might make some sense. > Thanks for the suggestion but the performance was terrible when write cache was disabled. -- --------------------------------------------------------------- regards Manish Regmi --------------------------------------------------------------- UNIX without a C Compiler is like eating Spaghetti with your mouth sewn shut. It just doesn't make sense. - 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/