From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lana.hrz.tu-chemnitz.de ([134.109.132.3]) by canuck.infradead.org with esmtps (Exim 4.63 #1 (Red Hat Linux)) id 1I1gxY-0002ua-M6 for linux-mtd@lists.infradead.org; Fri, 22 Jun 2007 07:05:51 -0400 Message-ID: <467BAD3C.8060707@informatik.tu-chemnitz.de> Date: Fri, 22 Jun 2007 13:06:36 +0200 From: =?ISO-8859-15?Q?Martin_D=E4umler?= MIME-Version: 1.0 To: =?ISO-8859-15?Q?J=F6rn_Engel?= Subject: Re: Real-time flash simulator References: <467B77F7.2000007@informatik.tu-chemnitz.de> <1182499773.4403.76.camel@sauron> <467B952E.30308@informatik.tu-chemnitz.de> <20070622093945.GC17988@lazybastard.org> <467BA051.50202@informatik.tu-chemnitz.de> <20070622102444.GD17988@lazybastard.org> In-Reply-To: <20070622102444.GD17988@lazybastard.org> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 8bit Cc: linux-mtd@lists.infradead.org, =?ISO-8859-15?Q?Martin_D=E4umler?= List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello Jörn, On Fri, 22 June 2007 12:24 +0200, Jörn Engel wrote: > > I guess the first thing you need to do is define what real-time actually > means. In particular you need to define the following: > > [...] > > Once you have this, it is possible to determine whether some storage > stack (filesystem, middle layers, hardware) can fulfill your > requirements, or how it would need to be changed to do so. > > Alternatively you can go the other way and take a given storage stack, > trying to determine the characteristics of it. that is what I do at the moment. The resulting flash file system should have low-fluctuating latencies. Of course, the overall performance should not be that bad (it has to be scaleable as well). But it seems I have to write a real-time capable flash simulator at first ;). Thank you for your help! Regards, Martin