Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262246AbVC3PeJ (ORCPT ); Wed, 30 Mar 2005 10:34:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262267AbVC3PeJ (ORCPT ); Wed, 30 Mar 2005 10:34:09 -0500 Received: from hobbit.corpit.ru ([81.13.94.6]:38486 "EHLO hobbit.corpit.ru") by vger.kernel.org with ESMTP id S262246AbVC3PeG (ORCPT ); Wed, 30 Mar 2005 10:34:06 -0500 Message-ID: <424AC6EA.9040707@tls.msk.ru> Date: Wed, 30 Mar 2005 19:34:02 +0400 From: Michael Tokarev Organization: Telecom Service, JSC User-Agent: Debian Thunderbird 1.0 (X11/20050116) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Yves Crespin Cc: linux-kernel Subject: Re: Disable cache disk References: <424AA2F0.3090100@wanadoo.fr> In-Reply-To: <424AA2F0.3090100@wanadoo.fr> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 688 Lines: 19 Yves Crespin wrote: > Hello, > > I write a lot of files on a USB disk for video monitoring archiving. > The write program is faster than the USB. > Cache disk take all RAM and kernel start swapping and everything become > very slow. > 1/ is-it possible to *really* be synchronize. I prefer to have a blocked > write() than use cache and get swap! > 2/ is-it possible to disable cache disk ? Try open() with O_DIRECT flag for a start. /mjt - 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/