From owner-freebsd-xen@FreeBSD.ORG Tue Jan 4 15:40:10 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 E7DD7106564A for ; Tue, 4 Jan 2011 15:40:10 +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 BD3B28FC14 for ; Tue, 4 Jan 2011 15:40:10 +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 p04FeAgA029837 for ; Tue, 4 Jan 2011 15:40:10 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p04FeAiw029834; Tue, 4 Jan 2011 15:40:10 GMT (envelope-from gnats) Date: Tue, 4 Jan 2011 15:40:10 GMT Message-Id: <201101041540.p04FeAiw029834@freefall.freebsd.org> To: freebsd-xen@FreeBSD.org From: Colin Percival Cc: Subject: Re: kern/153674: i386/XEN idle thread shows wrong percentages X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Colin Percival 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: Tue, 04 Jan 2011 15:40:11 -0000 The following reply was made to PR kern/153674; it has been noted by GNATS. From: Colin Percival To: bug-followup@FreeBSD.org, flo@freebsd.org Cc: Subject: Re: kern/153674: i386/XEN idle thread shows wrong percentages Date: Tue, 04 Jan 2011 07:31:16 -0800 FWIW, this sounds to me like the kernel scheduler is getting confused in its accounting; possibly due to "stolen" time (when the hypervisor is off running other instances) and possibly related to the clock-interrupts-getting-lost bug (kern/153620). -- Colin Percival Security Officer, FreeBSD | freebsd.org | The power to serve Founder / author, Tarsnap | tarsnap.com | Online backups for the truly paranoid