From owner-freebsd-virtualization@freebsd.org Tue Oct 18 02:35:19 2016 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CA32AC164E0 for ; Tue, 18 Oct 2016 02:35:19 +0000 (UTC) (envelope-from paul@redbarn.org) Received: from family.redbarn.org (family.redbarn.org [IPv6:2001:559:8000:cd::5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id B9574EB2 for ; Tue, 18 Oct 2016 02:35:19 +0000 (UTC) (envelope-from paul@redbarn.org) Received: from [24.104.150.148] (unknown [24.104.150.148]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by family.redbarn.org (Postfix) with ESMTPSA id 86D6E3AF58; Tue, 18 Oct 2016 02:35:18 +0000 (UTC) Message-ID: <58058A64.6010908@redbarn.org> Date: Mon, 17 Oct 2016 19:35:16 -0700 From: Paul Vixie User-Agent: Postbox 5.0.4 (Windows/20161007) MIME-Version: 1.0 To: Victor Sudakov CC: freebsd-virtualization@freebsd.org Subject: Re: choice of i386 vs amd64 guest References: <20161018015903.GA42265@admin.sibptus.transneft.ru> In-Reply-To: <20161018015903.GA42265@admin.sibptus.transneft.ru> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Oct 2016 02:35:19 -0000 Victor Sudakov wrote: > Colleagues, > > When I must run several FreeBSD guests in bhyve, should I prefer i386 > or amd64 guests provided a guest will never need more than 2-3 GB of > RAM? if you're running bind9, the sizeof(void *) will dominate your heap size, and a 32-bit guest will be better overall, given that you don't need the larger addressing size. for everything else, the larger register set on amd64 will matter more, and you should probably use a 64-bit guest. -- P Vixie