From owner-freebsd-xen@freebsd.org Mon Sep 14 16:01:02 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 A14C4A04EDE for ; Mon, 14 Sep 2015 16:01:02 +0000 (UTC) (envelope-from prvs=69297a8bb=roger.pau@citrix.com) Received: from SMTP02.CITRIX.COM (smtp02.citrix.com [66.165.176.63]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mail.citrix.com", Issuer "Verizon Public SureServer CA G14-SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3DB6218C1 for ; Mon, 14 Sep 2015 16:01:01 +0000 (UTC) (envelope-from prvs=69297a8bb=roger.pau@citrix.com) X-IronPort-AV: E=Sophos;i="5.17,529,1437436800"; d="scan'208";a="303465626" Subject: Re: XenServer 6.5(SP1) - HVM 're0: watchdog timeout' errors... To: Sydney Meyer , References: <9CC4073DE17E3C8BD01EF7D3@[10.12.30.106]> <55EDA470.1000007@citrix.com> <55EDC55B.8000004@egr.msu.edu> <762F895FF087C3BBB6DB94DA@[10.12.30.106]> <55EFF61A.3020409@citrix.com> <34C596D4CD79963C95725C41@[10.12.30.106]> <55F025BF.6020405@citrix.com> <28F73DA3-DC56-47F4-922B-31D73D124981@gmail.com> From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= X-Enigmail-Draft-Status: N1110 Message-ID: <55F6EF38.9040601@citrix.com> Date: Mon, 14 Sep 2015 18:00:56 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-DLP: MIA2 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: Mon, 14 Sep 2015 16:01:02 -0000 El 12/09/15 a les 0.13, Sydney Meyer ha escrit: > I just noticed that these performance problems do not occur under 10.0 and 10.1. > > Starting with 10.2 IPv4 TCP performance drops from ~12 Gb/s under 10.1 to ~350 Mb/s under 10.2. > > Should i write a new bugreport for this? Thanks for the report! I'm sorry I didn't realize it before and 10.2 shipped with this performance regression. I've bisected it during the weekend and found the culprit, fix is being worked on :). https://lists.freebsd.org/pipermail/svn-src-all/2014-September/091787.html Roger.