From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Date: Mon, 22 Nov 2004 23:14:02 +0000 Subject: Re: deferred rss update instead of sloppy rss Message-Id: <41A272BA.9000705@yahoo.com.au> List-Id: References: <41A26910.7090401@yahoo.com.au> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Christoph Lameter Cc: Linus Torvalds , Hugh Dickins , akpm@osdl.org, Benjamin Herrenschmidt , linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Christoph Lameter wrote: > On Tue, 23 Nov 2004, Nick Piggin wrote: > > >>Deferred rss might be a practical solution, but I'd prefer this if it can >>be made workable. > > > Both results in an additional field in task_struct that is going to be > incremented when the page_table_lock is not held. It would be possible > to switch to looping in procfs later. The main question with this patchset > is: > Sure. > How and when can we get this get into the kernel? > Well it is a good starting platform for the various PTL reduction patches floating around. I'd say Andrew could be convinced to stick it in -mm after 2.6.10, but we'd probably need a clear path to one of the PTL patches before anything would move into 2.6.