From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [patch] Reset the high water marks in CPUs pcp list From: Rohit Seth In-Reply-To: References: <20050928105009.B29282@unix-os.sc.intel.com> Content-Type: text/plain Date: Wed, 28 Sep 2005 13:26:25 -0700 Message-Id: <1127939185.5046.17.camel@akash.sc.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: akpm@osdl.org, linux-mm@kvack.org, Mattia Dongili , linux-kernel@vger.kernel.org List-ID: On Wed, 2005-09-28 at 13:01 -0700, Christoph Lameter wrote: > On Wed, 28 Sep 2005, Seth, Rohit wrote: > > > Recent changes in page allocations for pcps has increased the high watermark for these lists. This has resulted in scenarios where pcp lists could be having bigger number of free pages even under low memory conditions. > > > > [PATCH]: Reduce the high mark in cpu's pcp lists. > > There is no need for such a patch. The pcp lists are regularly flushed. > See drain_remote_pages. CONFIG_NUMA needs to be defined for that. And then too for flushing the remote pages. Also, when are you flushing the local pcps. Also note that this patch is just bringing the free pages on the pcp list closer to what used to be the number earlier. -rohit -- 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