From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: [PV-ops][PATCH 0/2] VNIF: Using smart polling instead of event notification. Date: Wed, 30 Sep 2009 16:41:59 -0700 Message-ID: <4AC3ECC7.1090007@goop.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Xu, Dongxiao" Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 09/30/09 11:17, Xu, Dongxiao wrote: > Resend the patch and CC Jeremy. > > One of the VNIF driver's scalability issues is the high event > channel frequency. It's highly related to physical NIC's interrupt > frequency in dom0, which could be 20K HZ in some situation. The > high frequency event channel notification makes the guest and dom0 > CPU utilization at a high value, especially in multi-VM cases. > The following two patches uses smart polling mechanism to > replace event notification to reduce the CPU Utilization. > > Signed-off-by: Dongxiao Xu > I'm having difficulty applying these because they're in quoted-printable MIME format. Could you resend them as attachments? Thanks, J