From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Wed, 10 Oct 2001 20:26:56 +0000 Subject: RE: [Linux-ia64] Re: prctl patch for fpu faults Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Wed, 10 Oct 2001 13:18:38 -0700, "Mallick, Asit K" said: Asit> David/Jesse, I would like the default to be noprint. As Jack Asit> mentioned that there are applications that will generate lots Asit> of these messages. These messages are ok for development Asit> systems and debugging applications but for production systems Asit> this creates problem. Most of the users want to run the Asit> applications (production) that do not require changing the Asit> configuration. It's fine by me if distributors set things up such that they're disabled by default, but for the kernel I'm releasing, I'll keep them turned on. It's just too easy to forget about them otherwise. And a program that accidentally generates tons of unaligned faults or fpswa faults will perform *a lot* worse than a program that occasionally generates a log message. Asit> We have seen people running applications on top of Linux and Asit> complaining about the performance compared to other OSes. The Asit> performance difference is due to the logging of these Asit> messages. Can you be more specific? A machine should easily tolerate a rate of one logged message per second, so if this makes a significant performance difference, that would be strange. --david