From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 27 Jun 2005 00:46:24 -0700 From: Andrew Morton Subject: Re: [rfc] lockless pagecache Message-Id: <20050627004624.53f0415e.akpm@osdl.org> In-Reply-To: <42BF9CD1.2030102@yahoo.com.au> References: <42BF9CD1.2030102@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Nick Piggin wrote: > > First I'll put up some numbers to get you interested - of a 64-way Altix > with 64 processes each read-faulting in their own 512MB part of a 32GB > file that is preloaded in pagecache (with the proper NUMA memory > allocation). I bet you can get a 5x to 10x reduction in ->tree_lock traffic by doing 16-page faultahead. -- 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: aart@kvack.org