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dramatic slowdown of C code
- From: apjaworski at mmm dot com
- To: cygwin at cygwin dot com
- Date: Thu, 27 Jun 2002 10:42:00 -0500
- Subject: dramatic slowdown of C code
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@mmm.com
Tel: (651) 733-6092
Fax: (651) 736-3122
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