From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 27 13:56:41 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F1E2C106567A for ; Wed, 27 Aug 2008 13:56:41 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 075E38FC1A; Wed, 27 Aug 2008 13:56:40 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <48B55D13.1060609@FreeBSD.org> Date: Wed, 27 Aug 2008 15:56:35 +0200 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.16 (Macintosh/20080707) MIME-Version: 1.0 To: Barry Boes References: <18612.51201.285688.628405@gargle.gargle.HOWL> <48B52AEE.9080205@FreeBSD.org> <18613.21419.16360.120533@gargle.gargle.HOWL> In-Reply-To: <18613.21419.16360.120533@gargle.gargle.HOWL> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org Subject: Re: kvm on amd64 - >6G? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Aug 2008 13:56:42 -0000 Barry Boes wrote: > I could apply such a patch to my servers, but there are two disadvantages : > o who wants to apply kernel patches to mission critical servers? Isn't > that a linux thing (joke!) A trivial tweak would let you set both parameters in your kernel configuration as an option. > o what about apps like the linuxulator that might not stand for this? Why do you think they will care? > On the tunable option : with today's kmem_size and kmem_size_max > tunables, would there also be a need to tune the portion of address > space available to kmem? Yes, it is still suballocated out of the kernel map. Kris