From owner-svn-src-all@freebsd.org Thu Jan 10 07:38:36 2019 Return-Path: <owner-svn-src-all@freebsd.org> Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E78A114A24CF; Thu, 10 Jan 2019 07:38:35 +0000 (UTC) (envelope-from glebius@freebsd.org) Received: from cell.glebi.us (glebi.us [198.45.61.253]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "cell.glebi.us", Issuer "cell.glebi.us" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 7AF9D6EA62; Thu, 10 Jan 2019 07:38:35 +0000 (UTC) (envelope-from glebius@freebsd.org) Received: from cell.glebi.us (localhost [127.0.0.1]) by cell.glebi.us (8.15.2/8.15.2) with ESMTPS id x0A7cRwv017195 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Wed, 9 Jan 2019 23:38:28 -0800 (PST) (envelope-from glebius@freebsd.org) Received: (from glebius@localhost) by cell.glebi.us (8.15.2/8.15.2/Submit) id x0A7cRER017194; Wed, 9 Jan 2019 23:38:27 -0800 (PST) (envelope-from glebius@freebsd.org) X-Authentication-Warning: cell.glebi.us: glebius set sender to glebius@freebsd.org using -f Date: Wed, 9 Jan 2019 23:38:27 -0800 From: Gleb Smirnoff <glebius@freebsd.org> To: "Andrey V. Elsukov" <ae@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r342908 - head/sys/netpfil/ipfw Message-ID: <20190110073827.GE18452@FreeBSD.org> References: <201901100147.x0A1lvQX035635@repo.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201901100147.x0A1lvQX035635@repo.freebsd.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 7AF9D6EA62 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-6.98 / 15.00]; REPLY(-4.00)[]; NEURAL_HAM_SHORT(-0.98)[-0.985,0]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" <svn-src-all.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>, <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/> List-Post: <mailto:svn-src-all@freebsd.org> List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>, <mailto:svn-src-all-request@freebsd.org?subject=subscribe> X-List-Received-Date: Thu, 10 Jan 2019 07:38:36 -0000 On Thu, Jan 10, 2019 at 01:47:57AM +0000, Andrey V. Elsukov wrote: A> glebius@ has reported that they at Netflix discovered, that initialization A> of this variable produces significant overhead on packet processing. A> After patching I managed to increase performance of packet processing on A> simple routing with ipfw(4) firewalling to about 11% from 9.8Mpps up to A> 11Mpps (Xeon E5-2660 v4@ + Mellanox 100G card). And with ipfw being processed at driver level, rather than ip_input() the boost is even more dramatic than 11%. https://github.com/glebius/FreeBSD/commits/pfil Soon to reach FreeBSD head :) -- Gleb Smirnoff