[lwip-users] lwIP optimization questions.

[Roger W. Cover]

Greetings,

I have implemented an HTTP server using lwIP on a Xilinx Virtex-4 device
using the PowerPC 405 embedded processor. My system provides ARP, ICMP and
UDP services in addition to the HTTP service. My system contains 32K of very
fast (100MHz access) on-chip RAM, 64M of slow (10MHz access) external RAM,
and 4M of FLASH. The system is working well and transfers data at about 3.5M
Bytes/second.

I would like to improve the performance of the transfers. One way I can do
this is to move critical variables into the fast RAM. Since I am new to
lwIP, I do not know which variables are critical to the operation of the
TCP/IP and UDP functions. Can anyone give me some guidance on this issue?

Regards,
Roger W. Cover
Spectral Instruments, Inc.
420 N. Bonita Ave.
Tucson, AZ 85745
Voice: 520-884-8821 ext. 144
FAX: 520-884-8803