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Date: Tue, 11 Sep 2001 12:57:35 -0400
From: Jason Tishler <jason AT tishler DOT net>
To: Robert Collins <robert DOT collins AT itdomain DOT com DOT au>,
        cygwin-developers AT cygwin DOT com
Subject: Re: Quick testfeedback...
Message-ID: <20010911125735.D1752@dothill.com>
Mail-Followup-To: Robert Collins <robert DOT collins AT itdomain DOT com DOT au>,
	cygwin-developers AT cygwin DOT com
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Rob,

On Tue, Sep 11, 2001 at 11:10:45AM -0400, Jason Tishler wrote:
> On Tue, Sep 11, 2001 at 10:00:11PM +1000, Robert Collins wrote:
> > I have tested this out on win95 for regressions, but not on NT
> > unfortunately... If some kind NT/2k user could test this I would be very
> > appreciative.
> 
> I ran your test suite with the latest CVS and then again after applying
> your patch.

I also ran the Python regression test for both cases:

    threads (CVS):   4:55  # latest CVS
    threads (patch): 3:22  # latest CVS + patch
    no threads:      2:26  # latest CVS + patch (but shouldn't matter)
    extra (patch):   0:47  # four extra tests only run in the threaded case

The above indicates that the use of critical sections instead of mutuxes
is a big win -- at least for Python.  Additionally, the threaded case
using critical sections performs almost identically to the non threaded
one, if one accounts for the extra tests:

    threads without extra: 2:35  # 3:22 - 0:47
    no threads:            2:26

Hence, the threaded case only incurs about a 6% performance penalty.
Not bad!

Would you be willing to check in your patch?

Thanks,
Jason