TCP Delayed ACK

Technical questions regarding the XTC tools and programming with XMOS.
Noeldi
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Posts: 10
Joined: Sun Jan 02, 2011 1:11 pm

TCP Delayed ACK

Post by Noeldi »

The actual implementation of the xtcp can only poorly handle the delayed acknowlegment.
Normaly it allows only 5 sendining packets per second because the host will delay the ACk by 200ms.
The xtcp is based on th uIP and it can handle only one outstanding TCP segment.
Ther is a "uIP TCP throughput booster hack" that overcomes the problems.

Is anyone using this hack or is there a better way to improve the performance ?


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Berni
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Posts: 363
Joined: Thu Dec 10, 2009 10:17 pm

Post by Berni »

Well you can use the old source code that still uses lwIP or something like that but the memory footprint of that one is a lot bigger. I think it takes up nearly the whole G4 chip to run that because of that limited RAM.