From owner-freebsd-xen@freebsd.org Mon Jan 13 13:51:28 2020 Return-Path: Delivered-To: freebsd-xen@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id E3F7A224641 for ; Mon, 13 Jan 2020 13:51:28 +0000 (UTC) (envelope-from mail@jservice.org) Received: from mail-qt1-x842.google.com (mail-qt1-x842.google.com [IPv6:2607:f8b0:4864:20::842]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47xFPD1NXFz4W85 for ; Mon, 13 Jan 2020 13:51:27 +0000 (UTC) (envelope-from mail@jservice.org) Received: by mail-qt1-x842.google.com with SMTP id i13so9110209qtr.3 for ; Mon, 13 Jan 2020 05:51:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jservice-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=k45248q2X7jw/11gtwlCy5MqChKwxyzMqYv6fbrEmI8=; b=dFUJwhW4Hhj6DCxAuo/OodSKGm7eSWkwLaTf/PkjFq2p5ENUcVnznF7gcSOX5kh1XF Kt8jvo48vamsyezLD7zCimH5EmXcouk10/kzeMOZTUCym89SNdaCE10l7kvU2oukGCXm uPPLsuerpY/y2hUWO5RXydzTq35FREzMLPQo5tyuxXpcqy9iK5o8DmnPrX4vTaF3+H5n uBy2cf9aV/cvtacuHwm529eeFJIPS0JewSp04RyyOwhqJbcqBOSvYoZ2jOqESqVJlsQQ 45FOrbN1ee2koL4Mc/qPHpltAnD2z6b0RPC2RMvK2yFZYlHWdZrLIPiVr5VO16xkbFFu F+uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=k45248q2X7jw/11gtwlCy5MqChKwxyzMqYv6fbrEmI8=; b=RDzCrX6jY3f12fvxqgznkWFNGLFBxT//MN7RKaICB3lbPtOexqcLBidj0p1fX6j9mR rckHTwp9KFH6BTR/ijqQuKk8pgdO+KGfNq/CrfwK3Ln2IYPcTsQP4pYPfUgMWRiIAy6T 4cHmh09cZ5+mD9/8cSgr/AhN/y5HsYdaioRR0dIJRpvymvLQVTb1p92MXGFmK9cVWA3c hrj7fVhSXt3sWZT0PeBoMF7n26CzKey9bZ7Er1HHaPQrO/gNBVS5rNs0l5zaVZ3gIiqq 3gfGwCE1z37ujc1QN3/l12eSy0HnY/qrblBZ6OOleSI/OvGwfY8PiUoG47hA5abQNzIR qaDg== X-Gm-Message-State: APjAAAWXV1AxZKS7J9h+aXTKNNyt9aNjlEEopOY0D4jodZ853RYpM+XF yTgGMGEyiCkx0oSe8pb6z3hISRID15OFrx7mKzgHkw== X-Google-Smtp-Source: APXvYqzCbvUeIAxD6IG+aQ1PYssBy2KxY9pokEvspucC6BQpvdCIpkFn+15CwXAEzdT3DgIuHRR4S0GSSp81KyUllHU= X-Received: by 2002:ac8:387b:: with SMTP id r56mr10454062qtb.364.1578923487293; Mon, 13 Jan 2020 05:51:27 -0800 (PST) MIME-Version: 1.0 References: <7E9802F1-172A-41A7-A110-C69A7D8D1192@kronometrix.org> <20200108154104.GE11738@Air-de-Roger> <74365939-48EF-4BA8-9DDF-6309C4D176FE@kronometrix.org> In-Reply-To: <74365939-48EF-4BA8-9DDF-6309C4D176FE@kronometrix.org> From: Juergen Gotteswinter Date: Mon, 13 Jan 2020 14:51:16 +0100 Message-ID: Subject: Re: Xen performance on FreeBSD vs Linux To: Stefan Parvu Cc: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , freebsd-xen@freebsd.org X-Rspamd-Queue-Id: 47xFPD1NXFz4W85 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=jservice-org.20150623.gappssmtp.com header.s=20150623 header.b=dFUJwhW4; dmarc=none; spf=pass (mx1.freebsd.org: domain of mail@jservice.org designates 2607:f8b0:4864:20::842 as permitted sender) smtp.mailfrom=mail@jservice.org X-Spamd-Result: default: False [-2.88 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[jservice-org.20150623.gappssmtp.com:s=20150623]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-xen@freebsd.org]; DMARC_NA(0.00)[jservice.org]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[jservice-org.20150623.gappssmtp.com:+]; RCVD_IN_DNSWL_NONE(0.00)[2.4.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; IP_SCORE(-0.38)[ip: (2.07), ipnet: 2607:f8b0::/32(-2.10), asn: 15169(-1.84), country: US(-0.05)]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list 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: Mon, 13 Jan 2020 13:51:29 -0000 Am So., 12. Jan. 2020 um 20:07 Uhr schrieb Stefan Parvu < sparvu@kronometrix.org>: > > > > Also a FreeBSD dom0 can only work in PVH mode, which is faster for > > certain operations like page table modifications, but it's slower for > > others, like issuing hypercalls, when compared to a PV dom0. > > > > I don't have figures at hand now, but guest creation is likely slower > > on a FreeBSD PVH dom0 than on a Linux PV dom0, and that's because > > hypercalls are more expensive on PVH than on PV (has nothing to do > > whether Linux or FreeBSD is used). > > right. thanks a lot for pointers. A bit confusing is that I see mentioned > around that Xen of FreeBSD is experimental. Is this true ? > > I will have 2 servers to test Xen and Bhyve on FreeBSD 12.1 and check how > well the hypervisors work for different guest from Linux, BSD and Windows. > > Im more interested on bhyve vs Xen on FreeBSd than Linux. We will keep > FreeBSD as our main virtualization platform. > > Stefan FreeBSD as Dom0 feels (at least ~6 month ago) really somehow experimental compared to my linux experience. i would go the bhyve route if your hardware supports the required cpu features.