From owner-freebsd-stable@FreeBSD.ORG Wed May 17 10:37:50 2006 Return-Path: X-Original-To: freebsd-stable@FreeBSD.org Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A5F8316A401 for ; Wed, 17 May 2006 10:37:50 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3A8C543D48 for ; Wed, 17 May 2006 10:37:50 +0000 (GMT) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id D8E9F46C5D; Wed, 17 May 2006 06:37:49 -0400 (EDT) Date: Wed, 17 May 2006 11:37:49 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Max Khon In-Reply-To: <20060509111924.GD64148@samodelkin.net> Message-ID: <20060517113507.W49041@fledge.watson.org> References: <27148.1144030940@sss.pgh.pa.us> <20060402232832.M947@ganymede.hub.org> <20060402234459.Y947@ganymede.hub.org> <27417.1144033691@sss.pgh.pa.us> <20060403164139.D36756@fledge.watson.org> <14654.1144082224@sss.pgh.pa.us> <20060403194251.GF4474@ns.snowman.net> <20060403233540.D76562@fledge.watson.org> <20060403225145.GI4474@ns.snowman.net> <20060403235222.W76562@fledge.watson.org> <20060509111924.GD64148@samodelkin.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Stephen Frost , freebsd-stable@FreeBSD.org, pgsql-hackers@postgresql.org, "Marc G. Fournier" , Kris Kennaway , Tom Lane Subject: Re: [HACKERS] semaphore usage "port based"? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 May 2006 10:37:50 -0000 On Tue, 9 May 2006, Max Khon wrote: >> Yes, there seems to be an awful lot of noise being made about the fact that >> the system does, in fact, work exactly as documented, and that the >> configuration being complained about is one that is specifically documented >> as being unsupported and undesirable. >> >> As commented elsewhere in this thread, currently, there is no >> virtualization support for System V IPC in the FreeBSD Jail implementation. >> That may change if/when someone implements it. Until it's implemented, it >> isn't going to be there, and the system won't behave as though it's there >> no matter how much jumping up and down is done. > > sysvipc has been implemented once, but it has been decided that it adds > unnecessary bloat. That's sad. I'm not sure I follow the reasoning behind this statement. Could you direct me to the implementation, and at the specific claim that it adds unnecessary bloat? As far as I know, no implementation of jail support for system v ipc has ever been rejected on the basis that it adds bloat -- all discussion about it has centered on the fact that it is, in fact, a very difficult technical problem to solve, which requires careful consideration of the approach and tradeoffs, and that that careful consideration has not yet bene done. Robert N M Watson