From owner-freebsd-net@FreeBSD.ORG Wed Feb 26 17:37:44 2014 Return-Path: Delivered-To: freebsd-net@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 ESMTPS id DD4E0413 for ; Wed, 26 Feb 2014 17:37:44 +0000 (UTC) Received: from mail-pa0-x229.google.com (mail-pa0-x229.google.com [IPv6:2607:f8b0:400e:c03::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id B67DC1390 for ; Wed, 26 Feb 2014 17:37:44 +0000 (UTC) Received: by mail-pa0-f41.google.com with SMTP id fa1so1279795pad.0 for ; Wed, 26 Feb 2014 09:37:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=ZFD1CSLKCeJE0T9GW8p74xkDI0fh6XF9FWdeIgVLSks=; b=tUZjoNeaRpoRfwfNOy9KE5fK+t3B+pilRm3LyEFTYbfg4tRsCD2hK+q6pIGDjq15vH cypjoQdt3Q+3Fiaa9BenQb/DjTIipR5jAPcUOSiFLIHdxmTakPfIOcImIOBS8iWMNiMG KyVkALiFWchvEyBbIxtYjLkLwu0AKqQ4JNpu3nLA6b3yloVJzIIc/+/qbNBXuBKVVUlZ bxYum3wtytBYEncECPUXcrlsUHZIyuEz2Mixx7vP51kr4h10QTOqVLZ2nzVr+Yje+ibf +SpdnYhy9X7lHtbYps62qT7PH3R9EidhCTNvQAjkhprYwGeR3K6RJMSAvMVHH+aBh+Z+ MgfA== MIME-Version: 1.0 X-Received: by 10.66.254.3 with SMTP id ae3mr10087247pad.107.1393436264352; Wed, 26 Feb 2014 09:37:44 -0800 (PST) Received: by 10.70.127.142 with HTTP; Wed, 26 Feb 2014 09:37:44 -0800 (PST) Received: by 10.70.127.142 with HTTP; Wed, 26 Feb 2014 09:37:44 -0800 (PST) Date: Wed, 26 Feb 2014 19:37:44 +0200 Message-ID: Subject: TSO From: Sami Halabi To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.17 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 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, 26 Feb 2014 17:37:44 -0000 Hi, I'm reading (almost) all mailing emails in mailig list... Almost every / many problem in network performancr / packets loss ended up suggesting disabling TSO. I wonder why.. Is it a bug in the implementation? Or bybdesign? What are the usecases that TSO is needed? Myabe it should be disabled bt default? Thanks in advance, Sami