From owner-freebsd-stable@FreeBSD.ORG Sat Oct 20 07:38:26 2007 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9EB9416A418; Sat, 20 Oct 2007 07:38:26 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (hub.freebsd.org [IPv6:2001:4f8:fff6::36]) by mx1.freebsd.org (Postfix) with ESMTP id DA6CC13C4A5; Sat, 20 Oct 2007 07:38:24 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <4719B06F.3000103@FreeBSD.org> Date: Sat, 20 Oct 2007 10:38:23 +0300 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.6 (Macintosh/20070728) MIME-Version: 1.0 To: Alfred Perlstein References: <20071019232846.GQ31826@elvis.mu.org> In-Reply-To: <20071019232846.GQ31826@elvis.mu.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: stable@freebsd.org, jhb@freebsd.org Subject: Re: LOCK_PROFILING in -stable 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: Sat, 20 Oct 2007 07:38:26 -0000 Alfred Perlstein wrote: > Hey guys, I have LOCK_PROFILING done for a product based on FreeBSD-6, > this means I can relatively easily backport LOCK_PROFILING from > FreeBSD-7 to FreeBSD-6. > > Do we want this? > > I'd like to do it if people want it. I think it should be done, performance is a lot better than the old 6.x version and it also adds another very useful performance metric (time spent waiting for the lock). The only concern is that it doesn't break ABI support when not compiled in, but I'm pretty sure you've already told me this is OK. Thanks for looking at this. Kris