Linksys Cardbus 10/100 performance note

[Nathan Anderson]

On Tue, 23 Feb 1999, Nicholas Jenkins wrote:

> Good Day, ALL:
> 
> I recompiled the tulip.c driver today, using
> various values for the "performance" register
> setting (static int csr0 = 0x01A00000 | 0x8000; - line 82).
> 
> After installing the latest version of the PCMCIA
> drivers - 3.0.9, here's what I found:
> 
> tulip.c w/csr0 = 0x01A00000 | 0x8000 yielded 40-90Kbytes/sec.
> tulip.c w/csr0 = 0x01A00000 | 0x9000 yielded 90-130Kbytes/sec.
> tulip.c w/csr0 = 0x01A00000 | 0xE000 yielded 890-1100Kbytes/sec.
> 
> This was on a 10BT hubbed network, using FTP.
> 
> Thus, it would appear that the Linksys Cardbus 10/100
> card prefers a defined "burst limit" (0x8000 vs 0x9000), and
> that it works better with 32 longwords for cache than 16.

Nick,

Are you using a 21143-TD based LinkSys Cardbus adapter, or do you have the
original LinkSys card?

TIA,

-- Nathan Anderson
   <mailto:nathana@premier1.net>