From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Date: Thu, 02 Dec 2004 00:55:38 +0000 Subject: Re: page fault scalability patch V12 [0/7]: Overview and Message-Id: <20041201165538.015ee7a6.akpm@osdl.org> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Linus Torvalds Cc: clameter@sgi.com, hugh@veritas.com, benh@kernel.crashing.org, nickpiggin@yahoo.com.au, linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Linus Torvalds wrote: > > > > On Wed, 1 Dec 2004, Christoph Lameter wrote: > > > > Changes from V11->V12 of this patch: > > - dump sloppy_rss in favor of list_rss (Linus' proposal) > > - keep up against current Linus tree (patch is based on 2.6.10-rc2-bk14) > > > > This is a series of patches that increases the scalability of > > the page fault handler for SMP. Here are some performance results > > on a machine with 512 processors allocating 32 GB with an increasing > > number of threads (that are assigned a processor each). > > Ok, consider me convinced. I don't want to apply this before I get 2.6.10 > out the door, but I'm happy with it. There were concerns about some architectures relying upon page_table_lock for exclusivity within their own pte handling functions. Have they all been resolved? > I assume Andrew has already picked up the previous version. Nope. It has major clashes with the 4-level-pagetable work.