From owner-freebsd-net@FreeBSD.ORG Thu Aug 15 04:00:20 2013 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id DCFA0DAE; Thu, 15 Aug 2013 04:00:20 +0000 (UTC) (envelope-from vijju.singh@gmail.com) Received: from mail-pd0-x236.google.com (mail-pd0-x236.google.com [IPv6:2607:f8b0:400e:c02::236]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id A2A1A2FF7; Thu, 15 Aug 2013 04:00:20 +0000 (UTC) Received: by mail-pd0-f182.google.com with SMTP id r10so328386pdi.41 for ; Wed, 14 Aug 2013 21:00:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=references:mime-version:in-reply-to:content-type :content-transfer-encoding:message-id:cc:from:subject:date:to; bh=j6XLCxBKieF7LMnFKJlozCgILBbaKkdCkapC/S9pmKs=; b=iOmoY9rx7nQow1LpWJDVfcB4THUqLBMeEDdKbtD0WJRLJ/3Q3WFcKf4iVUevSsAujV y/HgwhfXj7Z/hJkEtNCyUOC3QFt3QEYhG3XOPrGoxI4OmDa72DYo6/SlwFtAHaZwEZO4 OzAbArTkFgqs1aF/i4H7UorOj256MtA8a0I6blpwSOyPDsTnZuxSg9L+9MpdGVAHlNe9 QkFP9vHDhDLAT/TIONf1b2ePchJSCXxla68PqrTf7Dmy91e55+JGrG3wpf2rXXdqm0Bk WKmrcAQyPQwQO/X6Mj/FDONmN3y0QG5F2cwVuE+H1m6PD8F2IPdGc1hErE09jl+lJy7t 1T3w== X-Received: by 10.68.220.1 with SMTP id ps1mr13329263pbc.30.1376539219874; Wed, 14 Aug 2013 21:00:19 -0700 (PDT) Received: from [192.168.1.64] (108-64-226-69.lightspeed.sntcca.sbcglobal.net. [108.64.226.69]) by mx.google.com with ESMTPSA id x8sm54087305pbb.39.2013.08.14.21.00.17 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 14 Aug 2013 21:00:18 -0700 (PDT) References: <520A6D07.5080106@freebsd.org> <520AFBE8.1090109@freebsd.org> <520B24A0.4000706@freebsd.org> <520B3056.1000804@freebsd.org> <20130814102109.GA63246@onelab2.iet.unipi.it> <587579055.20130814154713@serebryakov.spb.ru> Mime-Version: 1.0 (1.0) In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Message-Id: X-Mailer: iPhone Mail (10B329) From: Vijay Singh Subject: Re: it's the output, not ack coalescing (Re: TSO and FreeBSD vs Linux) Date: Wed, 14 Aug 2013 21:00:16 -0700 To: Adrian Chadd Cc: Lawrence Stewart , Lev Serebryakov , Luigi Rizzo , FreeBSD Net X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Aug 2013 04:00:20 -0000 Is that what FLOWTABLE does? Also we need a mechanism to record time spent a= t various layers in the stack. Luigi has used his own methods but we're lack= ing something more generic. At work we have some crude tools that use mcount= information to indirectly measure costs but they are not reliable and only p= rovide partial information. Sent from my iPhone On Aug 14, 2013, at 11:11 AM, Adrian Chadd wrote: > On 14 August 2013 04:47, Lev Serebryakov wrote: >=20 >=20 >> And we should invalidate this info on ARP/route changes, or connection >> will be lost in such cases, am I right?.. So, on each such event code >> should look into all sockets and check, if routing/ARP information is >> still >> valid for them. Or we should store lists of sockets in routing and ARP >> tables... I don't know, what is worse. >=20 > .. or per-CPU copies of the ARP table.. ? >=20 >=20 >=20 > -adrian > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"