Re: (PM) STAC Cards

Chris Adams (cadams@ro.com)
21 May 1998 15:23:48 GMT

According to Jake Messinger <jake@ams.com>:
>On Wed, 20 May 1998, Brantley Jones wrote:
>
>> Would there be any point in this, though? Would you get that much better
>> compression ratios out of STAC as opposed to V.42 bis?
>
>Think about it. V.42 bis compression is a function of the processor in a
>modem. Stac compression would be a function of your processor on your main
>board, in some cases, a 400 Mhz Pentium II. Plus stac is newer
>algorhithms. What do you think? Ive heard a 20% average increase in
>performance.

Also, you are now putting fewer bits through your serial ports, so you
have fewer interrupts occuring. I would bet that a computer with a few
CPU cycles to spare would run better spending them on compression than
on serial port interrupt handling. You can set your serial port speed
back down to 38400 or 57600, instead of pushing it to 115200 or beyond.

-- 
Chris Adams - cadams@ro.com
System Administrator - Renaissance Internet Services
I don't speak for anybody but myself - that's enough trouble.
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