From owner-freebsd-net@FreeBSD.ORG Wed Dec 3 22:20:02 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 96598D27 for ; Wed, 3 Dec 2014 22:20:02 +0000 (UTC) Received: from rack.patpro.net (rack.patpro.net [193.30.227.216]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "patpro.net", Issuer "Gandi Standard SSL CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 56934685 for ; Wed, 3 Dec 2014 22:20:02 +0000 (UTC) Received: from [192.168.0.2] (boleskine.patpro.net [82.230.142.222]) by rack.patpro.net (Postfix) with ESMTPSA id EC840C3D; Wed, 3 Dec 2014 23:19:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=patpro.net; s=patpro; t=1417645199; bh=PUitY7DYmW5AdODI/m6AzGkwK4b9xJDIWGUKJ3TK+4w=; h=Subject:From:In-Reply-To:Date:Cc:References:To; b=V1Ch/FwYYErQkxuVYJkH7d1aMzjF5j66+tH+SBojePxWwSoRtN2Qu9/mqFToXmy4J cO/j08gvar7YgS33iXPZGCDrOyUYXySlO5qdjrDWWyabXwRTXYJVGCt2dMLpS9eNZs 5Sup5UwuiILH3dAvZtm4bRiTFXRqxGvKFA2jEJWw= Subject: Re: Horrendous upload network performance with VLAN (download seems OK) Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=iso-8859-1 From: Patrick Proniewski In-Reply-To: Date: Wed, 3 Dec 2014 23:19:58 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <998EBE7C-A619-41AA-9561-7276CDFF24A9@patpro.net> References: <727AB395-CF83-4D13-A2C3-50969C2969B0@patpro.net> <547F3352.3040101@multiplay.co.uk> <43C2162E-2B9F-437F-B4CF-E792CEC5DA7B@patpro.net> To: Borja Marcos X-Mailer: Apple Mail (2.1085) Cc: freebsd-net@freebsd.org, Steven Hartland X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Dec 2014 22:20:02 -0000 On 03 d=E9c. 2014, at 17:25, Borja Marcos wrote: > TSO can be disabled in a global way using a sysctl variable: = net.inet.tcp.tso That's it! I've set net.inet.tcp.tso to 0 in /etc/sysctl.conf, rebooted = -> Problem solved: # sysctl net.inet.tcp.tso net.inet.tcp.tso: 0 # scp FILE esxi11.domain.tld:/dev/null Password:=20 FILE 100% 347MB 19.3MB/s = 00:18 Thanks a lot for your help. Patrick=