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Date: Tue, 13 Feb 2001 17:28:54 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Optimizing away "ReadFile" calls when Make calls stat()
Message-ID: <20010213172854.A14080@redhat.com>
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References: <2CB1272B2212D211974D00805FCB57420AFAFCE1 AT mxmail DOT multex DOT com>
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In-Reply-To: <2CB1272B2212D211974D00805FCB57420AFAFCE1@mxmail.multex.com>; from roman.puttkammer@multex.com on Tue, Feb 13, 2001 at 05:13:49PM -0500

On Tue, Feb 13, 2001 at 05:13:49PM -0500, Puttkammer, Roman wrote:
>
>> -----Original Message-----
>> From: jfaith AT lineo DOT com [mailto:jfaith AT lineo DOT com]
>> ...
>> script just did "make --version > /dev/null" one thousand times
>> ...
>> Linux: 3 sec.
>> VMWare running Linux: 9 sec.
>> DOS (batch file) 18 sec.
>> Cygwin: 30 sec.
>
>AFAIK, fork() tends to be much slower on windows than on most unixes
>such as solaris or linux.

There is no real fork on generic Win32.  Cygwin emulates the fork call and
it is, as a result, very slow.

cgf

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