From mboxrd@z Thu Jan 1 00:00:00 1970 From: Antoine Roly Subject: KVM and ptp Date: Fri, 28 Jan 2011 10:20:27 +0100 Message-ID: <4D428A5B.9070800@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:45692 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755149Ab1A1JUb (ORCPT ); Fri, 28 Jan 2011 04:20:31 -0500 Received: by wwa36 with SMTP id 36so3132229wwa.1 for ; Fri, 28 Jan 2011 01:20:29 -0800 (PST) Sender: kvm-owner@vger.kernel.org List-ID: Hi all, I have to set up a virtual network environment, with +/- 15 virtual hosts and synchronize some of those virtual machines with ptp (precision time protocol). PTP was developed to provide very precise time coordination of LAN connected computers. The aim is to be a lot more precise than NTP, with a few milliseconds gap between synchronized machines. I have downloaded and installed ptpd [1] on each virtual machines but it does not seem to work. I use Debian testing on the host, kvm --version output is QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5) Each virtual machine runs CentOS 5.5. Do you know if there is some issues in the configuration, or between kvm and ptp ? Regards, Antoine [1] http://sourceforge.net/projects/ptpd/