From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 21 Nov 2004 13:12:50 -0800 From: Andrew Morton Subject: Re: [PATCH]: 1/4 batch mark_page_accessed() Message-Id: <20041121131250.26d2724d.akpm@osdl.org> In-Reply-To: <16800.47044.75874.56255@gargle.gargle.HOWL> References: <16800.47044.75874.56255@gargle.gargle.HOWL> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Nikita Danilov Cc: Linux-Kernel@vger.kernel.org, AKPM@osdl.org, linux-mm@kvack.org List-ID: Nikita Danilov wrote: > > Batch mark_page_accessed() (a la lru_cache_add() and lru_cache_add_active()): > page to be marked accessed is placed into per-cpu pagevec > (page_accessed_pvec). When pagevec is filled up, all pages are processed in a > batch. > > This is supposed to decrease contention on zone->lru_lock. Looks sane, althought it does add more atomic ops (the extra get_page/put_page). Some benchmarks would be nice to have. -- 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