Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Date: Mon, 10 Jan 2005 16:00:26 -0500 From: Christopher Faylor To: cygwin AT cygwin DOT com Subject: Re: Hyperthreading Problem - suggestion Message-ID: <20050110210026.GC3757@trixie.casa.cgf.cx> Reply-To: cygwin AT cygwin DOT com References: <20050110172023 DOT GA2023 AT trixie DOT casa DOT cgf DOT cx> <1105390160 DOT 1999 DOT 52 DOT camel AT newt> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1105390160.1999.52.camel@newt> User-Agent: Mutt/1.4.1i On Mon, Jan 10, 2005 at 08:49:20PM +0000, Adrian Cox wrote: >On Mon, 2005-01-10 at 12:20 -0500, Christopher Faylor wrote: >>The last time I tried to duplicate the problem, I ran a test for three >>days, tying up a machine that I use for other purposes. I'd previously >>tried other variations as well. The system is an SMP system so there >>should have been a good chance of duplicating the bug. I'm not going >>to try every variation of this problem when it shows up on the list. > >Just a quick observation and a question. Hyperthreading exposed a race >condition in an NT driver of mine that had run for a long time on an >SMP system. The timing is different. > >Is there anybody out there who has Windows XP and hyperthreading and >_can't_ reproduce the problem? This is making me nervous about a >project I'm planning, as most of the target machines will be P4s with >hyperthreading running XP. People have already claimed to have noticed problems on SMP systems. There have been people who run cygwin on hyperthreaded systems and report no problems. Read the archives. This isn't a difficult topic to search for. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/