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Subject:	dramatic slowdown of C code
To:	cygwin AT cygwin DOT com
Message-ID:	<OF57663999.B19202D8-ON86256BE5.005531B8@mmm.com>
From:	apjaworski AT mmm DOT com
Date:	Thu, 27 Jun 2002 10:42:00 -0500
MIME-Version:	1.0

Hi,

I am not sure if you are aware of this, but the recent upgrade of the
Cygwin DLL (to version 1.3.11-3) caused a dramatic (3 to 7 fold) slowdown
of gcc compiled code.

The code is a preprocessor of large text files.  It essentially reads a
file (up to 1,500,000 lines) and writes a reformatted file (essentially the
same number of lines).  It seems like the slowdown occurs during file IO.
I am noticing 3-fold decrease on reads and 7-fold decrease on writes.

I routinely use the setup utility to keep my Cygwin environment up to date.
Is it safe to downgrade the cygwin module to 1.3.10 (I just downloaded the
cygwin-1.3.10-1.tar.bz2).

Thanks in advance for your help.

Andy

__________________________________
Andy Jaworski
Engineering Systems Technology Center
3M Center, 518-1-01
St. Paul, MN 55144-1000
-----
E-mail: apjaworski AT mmm DOT com
Tel:  (651) 733-6092
Fax:  (651) 736-3122


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