From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 12 Jan 2005 15:30:33 -0800 From: Andrew Morton Subject: Re: page table lock patch V15 [0/7]: overview Message-Id: <20050112153033.6e2e4c6e.akpm@osdl.org> In-Reply-To: <41E5AFE6.6000509@yahoo.com.au> References: <41E4BCBE.2010001@yahoo.com.au> <20050112014235.7095dcf4.akpm@osdl.org> <20050112104326.69b99298.akpm@osdl.org> <41E5AFE6.6000509@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: clameter@sgi.com, torvalds@osdl.org, ak@muc.de, hugh@veritas.com, linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org List-ID: Nick Piggin wrote: > > So my patches cost about 7% in lmbench fork benchmark. OK, well that's the sort of thing we need to understand fully. What sort of CPU was that on? Look, -7% on a 2-way versus +700% on a many-way might well be a tradeoff we agree to take. But we need to fully understand all the costs and benefits. -- 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