From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David S. Ahern" Subject: Re: [kvm-devel] performance with guests running 2.4 kernels (specifically RHEL3) Date: Wed, 18 Jun 2008 22:20:54 -0600 Message-ID: <4859DEA6.5010503@cisco.com> References: <48054518.3000104@cisco.com> <480C5C39.4040300@qumranet.com> <480E492B.3060500@cisco.com> <480EEDA0.3080209@qumranet.com> <480F546C.2030608@cisco.com> <481215DE.3000302@cisco.com> <20080428181550.GA3965@dmt> <4816617F.3080403@cisco.com> <4817F30C.6050308@cisco.com> <48184228.2020701@qumranet.com> <481876A9.1010806@cisco.com> <48187903.2070409@qumranet.com> <4826E744.1080107@qumranet.com> <4826F668.6030305@qumranet.com> <48290FC2.4070505@cisco.com> <48294272.5020801@qumranet.com> <482B4D29.7010202@cisco.com> <482C1633.5070302@qumranet.com> <482E5F9C.6000207@cisco.com> <482FCEE1.5040306@qumranet.com> <4830F90A.1020809@cisco.com> <4830FE8D.6010006@cisco.com> <48318E64.8090706@qumranet.com> <4832DDEB.4000100@qumranet.com> <4835EEF5.9010600@cisco.com> <483D391F.7050007@qumranet.com> <483EDCEE.6070307@cisco.com> <4841094A.8090507@qumranet.com> <484422EE.5090501@cisco.com> <4847A5B8.6020503@qumranet.com> <48481250.6060005@cisco.com> <4849686E.8000402@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from sj-iport-6.cisco.com ([171.71.176.117]:61772 "EHLO sj-iport-6.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750730AbYFSEVE (ORCPT ); Thu, 19 Jun 2008 00:21:04 -0400 In-Reply-To: <4849686E.8000402@qumranet.com> Sender: kvm-owner@vger.kernel.org List-ID: Avi: We did not get a chance to do this at the Forum. I'd be interested in whatever options you have for reducing the scan time further (e.g., try to get scan time down to 1-2 seconds). thanks, david Avi Kivity wrote: > David S. Ahern wrote: >> I gave a shot at implementing your suggestion, but evidently I am still >> not understanding the shadow implementation. Can you suggest a patch to >> try this out? >> > > We can have a hacking session in kvm forum. Bring a guest on your laptop. > > It isn't going to be easy to both fix the problem and also not introduce > a regression somewhere else. >