Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753842Ab3JZUD6 (ORCPT ); Sat, 26 Oct 2013 16:03:58 -0400 Received: from mail-vb0-f43.google.com ([209.85.212.43]:53824 "EHLO mail-vb0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624Ab3JZUD5 (ORCPT ); Sat, 26 Oct 2013 16:03:57 -0400 MIME-Version: 1.0 In-Reply-To: <20131026113238.GC1792@Nokia-N900> References: <160824051.3072.1382685914055.JavaMail.mail@webmail07> <1814253454.3449.1382689853825.JavaMail.mail@webmail07> <20131025091842.GA28681@thunk.org> <20131025022937.12623dcd.akpm@linux-foundation.org> <20131026113238.GC1792@Nokia-N900> Date: Sat, 26 Oct 2013 13:03:56 -0700 X-Google-Sender-Auth: 0RSMrceYxz6tqTovNYao_JP4uQQ Message-ID: Subject: Re: Disabling in-memory write cache for x86-64 in Linux II From: Linus Torvalds To: Pavel Machek Cc: Andrew Morton , "Theodore Ts'o" , "Artem S. Tashkinov" , Wu Fengguang , Linux Kernel Mailing List Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 847 Lines: 19 On Sat, Oct 26, 2013 at 4:32 AM, Pavel Machek wrote: > > Hmm, I'd expect the result to be "dead USB key". Putting > ext3 on cheap flash device normally just kills the devic :-(. Not my experience. It may be true for some really cheap devices, but normal USB keys seem to just get really slow, probably due to having had their flash rewrite algorithm tuned for FAT accesses. I *do* suspect that to see the really bad behavior, you don't write just one large file to it, but many smaller ones. "git clone" will check out all the kernel tree files, obviously. Linus -- 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/