From owner-freebsd-current Sun Mar 24 9: 4:51 2002 Delivered-To: freebsd-current@freebsd.org Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by hub.freebsd.org (Postfix) with ESMTP id 8046137B419; Sun, 24 Mar 2002 09:04:41 -0800 (PST) Received: from fledge.watson.org (fledge.pr.watson.org [192.0.2.3]) by fledge.watson.org (8.11.6/8.11.6) with SMTP id g2OH4Uk76459; Sun, 24 Mar 2002 12:04:34 -0500 (EST) (envelope-from robert@fledge.watson.org) Date: Sun, 24 Mar 2002 12:04:29 -0500 (EST) From: Robert Watson X-Sender: robert@fledge.watson.org To: Poul-Henning Kamp Cc: "M. Warner Losh" , current@FreeBSD.ORG, obrien@FreeBSD.ORG Subject: Re: turning off malloc's AJ by default In-Reply-To: <62336.1016988467@critter.freebsd.dk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, 24 Mar 2002, Poul-Henning Kamp wrote: > In message , Robe > rt Watson writes: > > >With new userland code coming into -CURRENT at a rapid rate, it may be > >useful in -CURRENT for developers. For DPs, probably not. > > I don't have to tell you what the 'D' in 'DP' means, right ? :-) > > Robert, I can only say that I disagree 100% with you. > > In principle because I think only -RELEASE should not have J, and I > think even -RELEASE should have A. > > In practice I think this is completely l00ney, considering what we have > done in the kernel, worrying about AJ related false hits is sooo totally > down in the noise. A few weeks ago, I would have believed you. Except that using -J was a workaround recommended in a recent security advisory--prior to recommending it, I ran it on a server of mine for a few days. You'd be surprised how many random applications keel over, and the performance impact it has for some specific types of applications. Robert N M Watson FreeBSD Core Team, TrustedBSD Project robert@fledge.watson.org NAI Labs, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message