I send data from evaluation board MCB2300 (with LPC 2378 microprocessor) to a user's PC via Ethernet using TCP/IP protocol. A program named Ethereal shows that MCB2300 transfers 1024 bytes segment during 7-8 ms after ACK is received from PC. Why the transfer is so low? (Program sample is EasyWeb).
I send 4 Kbytes from MCB2300 to PC. Outgoing TCP data size = 1 Kbytes. 1 Kbyte was sent. The MCB2300 board got ACK from PC. The board sends next 1 Kbyte after 7-8 ms. What should I do to reduce this time? Total transfer time for 4Kbyte is 40 ms.
I don't use this product, so I don't have access to all information.
Check what options you have for configuring memory and sliding window size. If you can't find anything about sliding window support (many outstanding TCP messages before stopping to wait for an acknowledge) then you may have to call Keil support and check if the stack supports this. Without sliding window support, your transfer rate will be greatly affected by the ping times.
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