[pskmail] Speed tests with pskmail_server on windows hardware

  • From: Rein Couperus <rein@xxxxxxxxxxxx>
  • To: pskmail@xxxxxxxxxxxxx
  • Date: Thu, 26 Aug 2010 14:47:04 +0200 (CEST)

I have done a number of comparative  tests with a windows 2000 laptop (compaq 
to find out what is the best method to run a server on windoze hardware.
This laptop has 256 MB memory, and a CPU frequency of 745 MHz.

Results with andLinux running fldigi and the server on windows2000 pro:
* Pulseaudio not possible, TX intermittent. 100% CPU on transmit.
* Portaudio decodes PSK500 ok, 70-100% CPU when sending PSK500 or PSK500R.
After starting 1 windows application (CPU monitor) sending PSK500R or PSK500 
bad quality, unable to decode on the other end. Connection degrades to  
This situation remains after killing the windows app.

Results after booting puppy linux live CD with the pskmail server on the same 
and making a 512 MB pup-save image + puppy swap on C:\ :
* 100% decode and TX of PSK500 and PSK500R, no problem whatsoever.

This shows that on meager hardware it is still possible to run a server, 
you use the puppy version or native linux.

If you have meager hardware available which you can dedicate to the project, 
there are 3 possibilities which I have thoroughly tested:

* Use Xubuntu 10.04 LTS
* Use Ubuntu server with TightVNC as a headless system (here running on a  
* Use the puppy liveCD (probably the easiest, which minimal config effort).

The puppy solution gives you the best speed...


Rein PA0R


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