From owner-freebsd-net@FreeBSD.ORG Sat Mar 20 10:06:56 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 062AA1065677 for ; Sat, 20 Mar 2010 10:06:56 +0000 (UTC) (envelope-from alexander.bubnov@gmail.com) Received: from mail-fx0-f224.google.com (mail-fx0-f224.google.com [209.85.220.224]) by mx1.freebsd.org (Postfix) with ESMTP id 920CA8FC13 for ; Sat, 20 Mar 2010 10:06:55 +0000 (UTC) Received: by fxm24 with SMTP id 24so133417fxm.3 for ; Sat, 20 Mar 2010 03:06:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=ybgUXuGnrj3MqxyjF0/jPmVapK1HhjBGnwDzTNMzU7s=; b=f0xcJ9vrooDN7wpFV5/GW3kKv8wlbY6FPH++91I/KTFgsFQ48/AOkh/tvCiZZPLY75 Kr5d3piL92srOKraSl8n82MHVwe+5xE2icGrgTBQp2mc5DaOhPrY7HK0f3BGLGVWhkiF Fmx8nSWWNEHA+lw7iupRBFj6IFfdZXjIAZR2U= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=Tuk5kVYMJmyEWxtpvduUQrPdTQXFZO8LJeboKFHYhriPgfJoAPJW32VlIa66egUIUZ wCt8mfxGfSKqU43exEOIhF6+SskXApVmpHLXy6rxpzD1q4g60Ec/V2vrVrKyTFA7msIL FZDkVvyQQ8IA+QTfe5GZOTGFEQnMwrGFqRm8w= MIME-Version: 1.0 Received: by 10.102.214.19 with SMTP id m19mr3592542mug.96.1269079614321; Sat, 20 Mar 2010 03:06:54 -0700 (PDT) Date: Sat, 20 Mar 2010 13:06:54 +0300 Message-ID: From: Alexander Bubnov To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: why zero-copy sockets(9) are not popular? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Mar 2010 10:06:56 -0000 Hello, all! Anybody knows why zero copy is not popular although this technique allows to increase performance of servers? It is very hard to find any examples of zero-copy for FreeBSD. Thank you in advance. -- /BR, Alexander