From owner-freebsd-current@FreeBSD.ORG Tue Feb 3 09:20:59 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ECF5516A4D1; Tue, 3 Feb 2004 09:20:59 -0800 (PST) Received: from smtp.des.no (flood.des.no [217.116.83.31]) by mx1.FreeBSD.org (Postfix) with ESMTP id B4E4A43D73; Tue, 3 Feb 2004 09:20:58 -0800 (PST) (envelope-from des@des.no) Received: by smtp.des.no (Pony Express, from userid 666) id 471335309; Tue, 3 Feb 2004 18:20:34 +0100 (CET) Received: from dwp.des.no (des.no [80.203.228.37]) by smtp.des.no (Pony Express) with ESMTP id CE2DC5308; Tue, 3 Feb 2004 18:20:27 +0100 (CET) Received: by dwp.des.no (Postfix, from userid 2602) id 94CE633C6A; Tue, 3 Feb 2004 18:20:27 +0100 (CET) To: Robert Watson References: From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=) Date: Tue, 03 Feb 2004 18:20:27 +0100 In-Reply-To: (Robert Watson's message of "Tue, 3 Feb 2004 12:12:02 -0500 (EST)") Message-ID: User-Agent: Gnus/5.090024 (Oort Gnus v0.24) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on flood.des.no X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.63 cc: current@FreeBSD.org Subject: Re: Coalescing pipe allocation X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Feb 2004 17:21:00 -0000 Robert Watson writes: > However, it was side-by-side benchmarking of the resources required > to allocate pipes vs. sockets that caused me to investigate > optimizing the allocation process, as it still costs a lot more to > allocate a pipe than a socket pair. Don't worry about the overhead of allocating the pipe buffer. It will mostly go away when I fix vm_map_find(). DES --=20 Dag-Erling Sm=F8rgrav - des@des.no