From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46429801.8030202@yahoo.com.au> Date: Thu, 10 May 2007 13:56:49 +1000 From: Nick Piggin MIME-Version: 1.0 Subject: Re: swap-prefetch: 2.6.22 -mm merge plans References: <20070430162007.ad46e153.akpm@linux-foundation.org> <200705100928.34056.kernel@kolivas.org> <464261B5.6030809@yahoo.com.au> <200705101134.34350.kernel@kolivas.org> <46427BDB.30004@yahoo.com.au> <2c0942db0705092048m38b36e7fo3a7c2c59fe1612b2@mail.gmail.com> In-Reply-To: <2c0942db0705092048m38b36e7fo3a7c2c59fe1612b2@mail.gmail.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Ray Lee Cc: Con Kolivas , Ingo Molnar , ck list , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Ray Lee wrote: > On 5/9/07, Nick Piggin wrote: > >> You said it helped with the updatedb problem. That says we should look at >> why it is going bad first, and for example improve use-once algorithms. >> After we do that, then swap prefetching might still help, which is fine. > > > Nick, if you're volunteering to do that analysis, then great. If not, > then you're just providing a airy hope with nothing to back up when or > if that work would ever occur. I'd like to try helping. Tell me your problem. > Further, if you or someone else *does* do that work, then guess what, > we still have the option to rip out the swap prefetching code after > the hypothetical use-once improvements have been proven and merged. > Which, by the way, I've watched people talk about since 2.4. That was, > y'know, a *while* ago. What's wrong with the use-once we have? What improvements are you talking about? > So enough with the stop energy, okay? You're better than that. I don't think it is about energy or being mean, I'm just stating the issues I have with it. -- SUSE Labs, Novell Inc. -- 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