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Mail Archives: cygwin/2005/01/10/16:00:33

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Date: Mon, 10 Jan 2005 16:00:26 -0500
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
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: <GCEBKEBLOHKOGJEBHNNEAEBBGCAB DOT vbandke AT bsp-gmbh DOT com> <20050110172023 DOT GA2023 AT trixie DOT casa DOT cgf DOT cx> <1105390160 DOT 1999 DOT 52 DOT camel AT newt>
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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

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