From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 0/2] Batch writes to MMIO Date: Wed, 23 Apr 2008 19:51:18 +0300 Message-ID: <480F6906.5010108@qumranet.com> References: <12089560583282-git-send-email-Laurent.Vivier@bull.net> <480F4237.90202@qumranet.com> <1208960577.4281.17.camel@frecb07144> <480F4A4E.7010008@qumranet.com> <480F516E.3030407@codemonkey.ws> <1208967864.4281.36.camel@frecb07144> <480F6313.4060106@qumranet.com> <1208968882.4281.48.camel@frecb07144> <480F6874.7020601@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Laurent Vivier To: Anthony Liguori Return-path: In-Reply-To: <480F6874.7020601@codemonkey.ws> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Anthony Liguori wrote: >> >> How can I check that ? How can I measure latency ? >> > > ping (from guest to host) > The guest will halt anyway, flushing its mmio queue. Perhaps a ping while a background process spins, consuming all cpu. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone