From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: kvm & dyntick Date: Thu, 11 Jan 2007 18:08:38 +0200 Message-ID: <45A66106.5030608@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel , linux-kernel Return-path: To: Ingo Molnar List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org It occurs to me that kvm could benefit greatly from dyntick: dyntick-enabled host: - generate virtual interrupts at whatever HZ the guest programs its timers, be it 100, 250, 1000 or whatever - avoid expensive vmexits due to useless timer interrupts dyntick-enabled guest: - reduce the load on the host when the guest is idling (currently an idle guest consumes a few percent cpu) What are the current plans wrt dyntick? Is it planned for 2.6.21? -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV