From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 12 Nov 2007 20:41:10 -0800 (PST) From: Christoph Lameter Subject: Re: x86_64: Make sparsemem/vmemmap the default memory model In-Reply-To: <2c0942db0711122027m5b11502cveded5705c0bc4f64@mail.gmail.com> Message-ID: References: <200711130059.34346.ak@suse.de> <200711130149.54852.ak@suse.de> <2c0942db0711122027m5b11502cveded5705c0bc4f64@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Ray Lee Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mel Gorman , Andi Kleen , Andy Whitcroft List-ID: On Mon, 12 Nov 2007, Ray Lee wrote: > Discontig obviously needs to die. However, FlatMem is consistently > faster, averaging about 2.1% better overall for your numbers above. Is > the page allocator not, erm, a fast path, where that matters? > > Order Flat Sparse % diff > 0 639 641 0.3 IMHO Order 0 currently matters most and the difference is negligible there. -- 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