Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 13 Nov 2001 10:56:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 13 Nov 2001 10:56:08 -0500 Received: from perninha.conectiva.com.br ([200.250.58.156]:8976 "HELO perninha.conectiva.com.br") by vger.kernel.org with SMTP id ; Tue, 13 Nov 2001 10:56:04 -0500 Date: Tue, 13 Nov 2001 13:55:42 -0200 (BRST) From: Rik van Riel X-X-Sender: To: Roy Sigurd Karlsbakk Cc: Subject: Re: linux readahead setting? In-Reply-To: Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 13 Nov 2001, Roy Sigurd Karlsbakk wrote: > I heard linux does <= 32 page readahead from block devices > (scsi/ide/que?). Is there a way to double this? I want to read 256kB > chunks from the SCSI drives, as to get the best speed. These numbers are > based on some testing and information I've got from Compaq's storage guys. The -ac kernels have a way to tune this dynamically, I guess we might want to push this change into 2.4 later on... regards, Rik -- DMCA, SSSCA, W3C? Who cares? http://thefreeworld.net/ http://www.surriel.com/ http://distro.conectiva.com/ - 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/