From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 23 Nov 2005 11:30:10 -0800 (PST) From: Christoph Lameter Subject: Re: [PATCH]: Free pages from local pcp lists under tight memory conditions In-Reply-To: <20051122161000.A22430@unix-os.sc.intel.com> Message-ID: References: <20051122161000.A22430@unix-os.sc.intel.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Rohit Seth Cc: akpm@osdl.org, torvalds@osdl.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Tue, 22 Nov 2005, Rohit Seth wrote: > [PATCH]: This patch free pages (pcp->batch from each list at a time) from > local pcp lists when a higher order allocation request is not able to > get serviced from global free_list. Ummm.. One controversial idea: How about removing the complete pcp subsystem? Last time we disabled pcps we saw that the effect that it had was within noise ratio on AIM7. The lru lock taken without pcp is in the local zone and thus rarely contended. -- 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