From owner-cvs-src@FreeBSD.ORG Thu Jun 14 11:22:59 2007 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4B82216A469; Thu, 14 Jun 2007 11:22:59 +0000 (UTC) (envelope-from brde@optusnet.com.au) Received: from mail31.syd.optusnet.com.au (mail31.syd.optusnet.com.au [211.29.132.102]) by mx1.freebsd.org (Postfix) with ESMTP id C5AB213C480; Thu, 14 Jun 2007 11:22:56 +0000 (UTC) (envelope-from brde@optusnet.com.au) Received: from besplex.bde.org (c220-239-235-248.carlnfd3.nsw.optusnet.com.au [220.239.235.248]) by mail31.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id l5EBMrSJ031254 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 14 Jun 2007 21:22:54 +1000 Date: Thu, 14 Jun 2007 21:22:53 +1000 (EST) From: Bruce Evans X-X-Sender: bde@besplex.bde.org To: Kip Macy In-Reply-To: Message-ID: <20070614211730.F33664@besplex.bde.org> References: <200706130617.l5D6HncF038605@repoman.freebsd.org> <20070613184656.N25269@delplex.bde.org> <20070614043846.T27413@besplex.bde.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: cvs-all@FreeBSD.org, cvs-src@FreeBSD.org, src-committers@FreeBSD.org, Bruce Evans , Bruce Evans Subject: Re: cvs commit: src/sys/libkern mcount.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jun 2007 11:22:59 -0000 On Wed, 13 Jun 2007, Kip Macy wrote: >> It's unlikely because 0.01% of users configure kernel profiling and >> you didn't report configuring it. >> Profiling doesn't hang for me, but I use uncommitted fixes for locking, >> and only use it on amd64 and i386, and haven't tried it under SMP >> lately. Profiling never worked right for SMP and hangs are one >> possibility for it not working. -pp is only supported for amd64 and >> i386. I only tried it lately to see if gcc-4.2 broke it. gcc-4.2 >> certainly broke -pp, but AFAIK not in a way that causes additional >> hangs or breaks -p. > > "-p" works "-pp" does not. This is a dual Woodcrest (2x2) running > x86_64. I guess I can try running with SMP disabled as another data > point. Try my fixes sent to freebsd-amd64. gcc-4.2 will give unusuable (but faster) results with -pp since the main known new problem with gcc-4.2 is it not emitting any profiler-epilogue calls. Bruce