Date: Fri, 11 May 2007 20:48:05 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Abdullah Ibn Hamad Al-Marri <almarrie@gmail.com> Cc: stable@freebsd.org Subject: Re: UNIX domain sockets MFC's Message-ID: <20070511204540.M24765@fledge.watson.org> In-Reply-To: <499c70c0705111213tddabb55g696bf5dc0fc92f70@mail.gmail.com> References: <20070508132149.A24765@fledge.watson.org> <20070511124830.N24765@fledge.watson.org> <499c70c0705111213tddabb55g696bf5dc0fc92f70@mail.gmail.com>
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On Fri, 11 May 2007, Abdullah Ibn Hamad Al-Marri wrote: > On 5/11/07, Robert Watson <rwatson@freebsd.org> 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
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