From owner-freebsd-xen@freebsd.org Wed Jul 29 12:35:39 2015 Return-Path: Delivered-To: freebsd-xen@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 E8E1E9AD11D for ; Wed, 29 Jul 2015 12:35:38 +0000 (UTC) (envelope-from egoitz@sarenet.es) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id D11C9C6E for ; Wed, 29 Jul 2015 12:35:38 +0000 (UTC) (envelope-from egoitz@sarenet.es) Received: by mailman.ysv.freebsd.org (Postfix) id CE0549AD11C; Wed, 29 Jul 2015 12:35:38 +0000 (UTC) Delivered-To: xen@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 CD8B79AD11A for ; Wed, 29 Jul 2015 12:35:38 +0000 (UTC) (envelope-from egoitz@sarenet.es) Received: from cu1176c.smtpx.saremail.com (cu1176c.smtpx.saremail.com [195.16.148.151]) (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 70FF4C6D for ; Wed, 29 Jul 2015 12:35:37 +0000 (UTC) (envelope-from egoitz@sarenet.es) Received: from [172.16.2.46] (izaro.sarenet.es [192.148.167.11]) by proxypop02.sare.net (Postfix) with ESMTPSA id 1B8469DC4AF; Wed, 29 Jul 2015 14:28:24 +0200 (CEST) Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2102\)) Subject: Re: Poor network performance with Xen + OpenVPN? From: Egoitz Aurrekoetxea In-Reply-To: Date: Wed, 29 Jul 2015 14:28:16 +0200 Cc: xen@FreeBSD.org Message-Id: <40E060AB-F0B9-48F3-9309-947CAB5C1939@sarenet.es> References: To: Karl Pielorz X-Mailer: Apple Mail (2.2102) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.20 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: Wed, 29 Jul 2015 12:35:39 -0000 Hi! Have you disabled tso, lro and friends?. Regards, Egoitz Aurrekoetxea Departamento de sistemas 944 209 470 Parque Tecnol=C3=B3gico. Edificio 103 48170 Zamudio (Bizkaia) egoitz@sarenet.es www.sarenet.es Antes de imprimir este correo electr=C3=B3nico piense si es necesario = hacerlo. > El 29/7/2015, a las 8:47, Karl Pielorz = escribi=C3=B3: >=20 >=20 > Hi All, >=20 > A while ago I ran into an issue with FreeBSD + Xen and networking = (where FreeBSD PVHVM domU's can't "route" traffic to/from other domU's = (fbsd/linux/windows) - e.g. as a default gateway). >=20 > I seem to have run into what appears to be another network issue now = - XenServer 6.5-SP1 +hotfixes, with FreeBSD 10.1-p4 (as PVHVM), and = OpenVPN 2.3.7 >=20 > Everything 'works OK' - but the performance is pretty poor. Most = noticeable - if you have a browser open fetching pages via the VPN - the = pages arrive very slowly, and any ssh sessions etc. are instantly put on = a 'go slow', you also start getting ping timeouts when pinging hosts the = other side of the VM/VPN until the pages are fetched. >=20 > Swap back to a bare metal system (on the same networks) - it works = fine, switch back over to the VM - and again, performance is lousy. >=20 > The host running OpenVPN isn't really under any load (it's only job is = running OpenVPN) - nor is it's XenServer. >=20 > If I connect to another OpenVPN host which is running on an HVM = FreeBSD 9.1 domU - performance is indistinguishable from the bare metal = (as you'd expect considering the relatively low volumes of traffic over = the VPN etc.) >=20 > Can anyone suggest any fixes / where to look to try and keep it as = PVHVM, and get the performance back? - as we've already got a collection = of HVM machines (to work round the other network problem) - which I = don't really want to add to, as they're not agile :( >=20 > Cheers, >=20 > -Karl > _______________________________________________ > freebsd-xen@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org"