From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 27 Jun 2005 10:49:24 -0700 (PDT) From: Christoph Lameter Subject: Re: [rfc] lockless pagecache In-Reply-To: <20050627004624.53f0415e.akpm@osdl.org> Message-ID: References: <42BF9CD1.2030102@yahoo.com.au> <20050627004624.53f0415e.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Nick Piggin , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Mon, 27 Jun 2005, Andrew Morton wrote: > 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. Could be working into the prefault patch.... Good idea. -- 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