From owner-freebsd-stable@FreeBSD.ORG Sun Aug 11 00:17:13 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 05AD21E8 for ; Sun, 11 Aug 2013 00:17:13 +0000 (UTC) (envelope-from bryanv@daemoninthecloset.org) Received: from torment.daemoninthecloset.org (torment.daemoninthecloset.org [94.242.209.234]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id BA2FD277A for ; Sun, 11 Aug 2013 00:17:12 +0000 (UTC) Received: from sage.daemoninthecloset.org (unknown [70.114.209.60]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "sage.daemoninthecloset.org", Issuer "daemoninthecloset.org" (verified OK)) by torment.daemoninthecloset.org (Postfix) with ESMTPS id 416DC42C088E; Sun, 11 Aug 2013 02:21:28 +0200 (CEST) X-Virus-Scanned: amavisd-new at daemoninthecloset.org X-Virus-Scanned: amavisd-new at daemoninthecloset.org Date: Sat, 10 Aug 2013 19:16:51 -0500 (CDT) From: Bryan Venteicher To: krad Message-ID: <1737845049.15385.1376180211594.JavaMail.root@daemoninthecloset.org> In-Reply-To: References: Subject: Re: VTNET + pf + TSO performance MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.51.1.6] X-Mailer: Zimbra 8.0.2_GA_5569 (ZimbraWebClient - GC28 (Mac)/8.0.2_GA_5569) Thread-Topic: VTNET + pf + TSO performance Thread-Index: ifdoQUX4OMPvkW2L/Y5glVT4650IIg== Cc: freebsd-stable@freebsd.org, bane ivosev X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Aug 2013 00:17:13 -0000 ----- Original Message ----- > Hi > > Was there any progress on the thread below? I have a freebsd guest ontop of > solaris 11 exhibiting this problem. I'm on a pretty upto date stable > kernel. The TSO fix works fine but i guess im taking a performance hit with > it disabled > I'm not totally sure what is going on. FreeBSD checksum offloading is a bit limited w.r.t. some virtualization use cases, but that doesn't look like what you are running into if you just have to disable TSO. What hypervisor are you using on Solaris 11? Can you post a bootverbose dmesg of your guest? I suspect your hypervisor is advertising TSO (GSO in VirtIO/Linux speak) when the tap/bridge/physical interface doesn't actually support it and does not do the segmentation in software as a fallback. > > FreeBSD carrera.snaffler.net 9.2-PRERELEASE FreeBSD 9.2-PRERELEASE #0 > r254177: Sat Aug 10 11:08:17 BST 2013 > root@carrera.snaffler.net:/usr/obj/usr/src/sys/me > amd6 > > > http://lists.freebsd.org/pipermail/freebsd-stable/2012-November/070413.html > > http://forums.freebsd.org/showthread.php?t=37814 > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >