From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46A6EE09.1030307@yahoo.com.au> Date: Wed, 25 Jul 2007 16:30:33 +1000 From: Nick Piggin MIME-Version: 1.0 Subject: Re: [ck] Re: -mm merge plans for 2.6.23 References: <20070710013152.ef2cd200.akpm@linux-foundation.org> <9a8748490707231608h453eefffx68b9c391897aba70@mail.gmail.com> <46A57068.3070701@yahoo.com.au> <2c0942db0707232153j3670ef31kae3907dff1a24cb7@mail.gmail.com> <46A58B49.3050508@yahoo.com.au> <2c0942db0707240915h56e007e3l9110e24a065f2e73@mail.gmail.com> <46A6CC56.6040307@yahoo.com.au> <46A6D7D2.4050708@gmail.com> <1185341449.7105.53.camel@perkele> <46A6E1A1.4010508@yahoo.com.au> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Matthew Hawkins Cc: Eric St-Laurent , Ray Lee , Jesper Juhl , linux-kernel@vger.kernel.org, ck list , linux-mm@kvack.org, Paul Jackson , Andrew Morton , Rene Herman List-ID: Matthew Hawkins wrote: > On 7/25/07, Nick Piggin wrote: > >> Not to say that neither fix some problems, but for such conceptually >> big changes, it should take a little more effort than a constructed test >> case and no consideration of the alternatives to get it merged. > > > Swap Prefetch has existed since September 5, 2005. Please Nick, > enlighten us all with your "alternatives" which have been offered (in > practical, not theoretical form) in the past 23 months, along with > their non-constructed benchmarks proving their case and the hordes of > happy users and kernel developers who have tested them out the wazoo > and given their backing. Or just take a nice steaming jug of STFU. The alternatives comment was in relation to the readahead based drop behind patch,for which an alternative would be improving use-once, possibly in the way I described. As for swap prefetch, I don't know, I'm not in charge of it being merged or not merged. I do know some people have reported that their updatedb problem gets much better with swap prefetch turned on, and I am trying to work on that too. For you? You also have the alternative to help improve things yourself, and you can modify your own kernel. -- 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