From owner-freebsd-stable@FreeBSD.ORG Fri May 11 19:48:06 2007 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 22FE616A403 for ; Fri, 11 May 2007 19:48:06 +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 ECCEC13C483 for ; Fri, 11 May 2007 19:48:05 +0000 (UTC) (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 5D19247771; Fri, 11 May 2007 15:48:05 -0400 (EDT) Date: Fri, 11 May 2007 20:48:05 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Abdullah Ibn Hamad Al-Marri In-Reply-To: <499c70c0705111213tddabb55g696bf5dc0fc92f70@mail.gmail.com> Message-ID: <20070511204540.M24765@fledge.watson.org> References: <20070508132149.A24765@fledge.watson.org> <20070511124830.N24765@fledge.watson.org> <499c70c0705111213tddabb55g696bf5dc0fc92f70@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: stable@freebsd.org Subject: Re: UNIX domain sockets MFC's 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: Fri, 11 May 2007 19:48:06 -0000 On Fri, 11 May 2007, Abdullah Ibn Hamad Al-Marri wrote: > On 5/11/07, Robert Watson wrote: >> On Tue, 8 May 2007, Robert Watson wrote: >> >> > Right now I am tracking two known issues with UNIX domain sockets in >> > RELENG_6: >> > >> > - Reported NULL point derference in unp_connect(), which occurs due to >> the >> > dropping of locks around sonewconn(). This is fixed in HEAD, and I am >> > preparing an MFC of this patch. >> >> The fix for this has now been merged as 1.155.2.22. As there have been no >> new reports of UNIX domain socket problems in the last couple of days, it >> sounds like the MFC of the last batch of fixes and cleanups has not lead to >> problems. > > I updated my server which has dual CPU with SMP one hour ago, and I didn't > see any speed improvement in the MySQL. The speed improvements associated with these MFC's is minor; primarily they are stability improvements under high load. There are major performance improvements in the 7.x implementation, especially for multi-core systems, but I have no current plans to MFC them, as they interact with other system components and may depend on other changes that also haven't been MFC'd. Robert N M Watson Computer Laboratory University of Cambridge