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Re: Performance question
- From: Tim Prince <TimothyPrince at sbcglobal dot net>
- To: cygwin at cygwin dot com
- Date: Mon, 07 Apr 2008 07:35:18 -0700
- Subject: Re: Performance question
- References: <47FA2338.firstname.lastname@example.org>
- Reply-to: tprince at computer dot org
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.If you are running single thread, with HT enabled, a 50% performance meter
indication on the Dell is entirely normal. Xterm performance questions
would be appropriate to that mailing list.
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.
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