Performance question

[w1hkj]

We are porting a real time data acquisition program for amateur radio 
digital signal processing.  The program, fldigi, uses the Fast Light 
Tool Kit and and a number of support libraries including PortAudio and 
Sndfile.  The source code for this program can be found at 
http://www.w1hkj.com.  fldigi is licensed under the GPL.

The port to Windows using Cygwin works very well.  There is just one 
issue that needs to be addressed.  Several test platforms are used to 
gauge performance, including an

HP notebook, 900 Mhz Athalon, 256 Mg RAM, and
Dell Dimension 3000, dual processor 3.0 GHz, 1 G RAM.

There is is very significant difference in cpu usage between running the 
application from the Cygwin X-terminal and running from the run command 
(with the cygwin1.dll) from Windows.

System       X-term      Windows-Run
HP Athalon   33%           100%
Dell 3000    3 %            55%


We would appreciate any assistance or suggestions on how to improve the 
performance when linking to cygwin1.dll.

Thank you.

David Freese
for fldigi development team.


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