From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 27 Dec 2002 14:16:34 -0600 From: Dave McCracken Subject: Re: shared pagetable benchmarking Message-ID: <47580000.1041020194@[10.1.1.5]> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Daniel Phillips , Andrew Morton , linux-mm@kvack.org List-ID: --On Friday, December 27, 2002 12:02:56 -0800 Linus Torvalds wrote: > It doesn't break even on small forks. It _slows_them_down_. I gave Andrew a patch that does make it break even on small forks, by doing the copy at fork time when a process only has 3 pte pages. My tests indicate that any process with 4 or more pte pages usually is faster by doing the share. Dave McCracken -- 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/