From owner-freebsd-xen@FreeBSD.ORG Sun Jan 9 05:40:09 2011 Return-Path: Delivered-To: freebsd-xen@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8211A1065695 for ; Sun, 9 Jan 2011 05:40:09 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 7105B8FC12 for ; Sun, 9 Jan 2011 05:40:09 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p095e9xt038443 for ; Sun, 9 Jan 2011 05:40:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p095e9fb038441; Sun, 9 Jan 2011 05:40:09 GMT (envelope-from gnats) Date: Sun, 9 Jan 2011 05:40:09 GMT Message-Id: <201101090540.p095e9fb038441@freefall.freebsd.org> To: freebsd-xen@FreeBSD.org From: Greg Holmberg Cc: Subject: Re: kern/153620: Xen guest system clock drifts in AWS EC2 (FreeBSD 9.0-CURRENT i386 T1-micro) X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Greg Holmberg List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Jan 2011 05:40:09 -0000 The following reply was made to PR kern/153620; it has been noted by GNATS. From: Greg Holmberg To: FreeBSD PR kern/153620 Cc: Subject: Re: kern/153620: Xen guest system clock drifts in AWS EC2 (FreeBSD 9.0-CURRENT i386 T1-micro) Date: Sun, 9 Jan 2011 06:39:44 +0100 This problem -- dropping 2200 seconds of clock time -- is not seen in a FreeBSD 8.2-RC1 AMI on Amazon EC2 (ami-f77e4a83), using the same type of T1-micro VM as in the initial report. The clock drift noted with 9-CURRENT is also present in 8.2-RC1, but at about 40% of the rate, taking three hours and twenty-two minutes to lose an entire second. Best regards, Greg Holmberg