From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 3175C6B0044 for ; Fri, 18 Dec 2009 14:39:04 -0500 (EST) Date: Fri, 18 Dec 2009 20:38:59 +0100 From: Andi Kleen Subject: Re: Swap on flash SSDs Message-ID: <20091218193859.GE17509@basil.fritz.box> References: <4B2A8D83.30305@redhat.com> <20091218051210.GA417@elte.hu> <1261161677.27372.1629.camel@nimitz> <4B2BD55A.10404@sgi.com> <1261164487.27372.1735.camel@nimitz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1261164487.27372.1735.camel@nimitz> Sender: owner-linux-mm@kvack.org To: Dave Hansen Cc: Mike Travis , Christoph Lameter , Ingo Molnar , Rik van Riel , Andrea Arcangeli , linux-mm@kvack.org, Marcelo Tosatti , Adam Litke , Avi Kivity , Izik Eidus , Hugh Dickins , Nick Piggin , Mel Gorman , Andi Kleen , Benjamin Herrenschmidt , KAMEZAWA Hiroyuki , Chris Wright , Andrew Morton , "Stephen C. Tweedie" List-ID: > Modern, well-made flash SSDs and other flash devices have wear-leveling > built in so that they wear all of the flash cells evenly. There's still > a discrete number of writes that they can handle over their life, but it > should be high enough that you don't notice. The keyword is "well-made" It depends on how much you pay for it. Don't expect that from super cheap USB sticks. But I believe it to be true for higher end flash, with a continuum there (server > highend consumer > lowend consumer >> cheap junk) -Andi -- ak@linux.intel.com -- Speaking for myself only. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org