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[lwip-devel] [task #7040] Work on tcp_enqueue


From: Jakob Stoklund Olesen
Subject: [lwip-devel] [task #7040] Work on tcp_enqueue
Date: Fri, 30 Jan 2009 23:26:25 +0000
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_6; en-us) AppleWebKit/525.27.1 (KHTML, like Gecko) Version/3.2.1 Safari/525.27.1

Follow-up Comment #10, task #7040 (project lwip):

Bill, thanks for testing the patch!

What is the limiting factor for your performance?
CPU? Network bandwidth? Bandwidth-delay product? DMA
bandwidth/fragmentation?
Do you have retransmissions?

Sending full-sized TCP segments only helps you if you are saturating the
network link. It minimizes the protocol header overhead. If you are
CPU-limited, it could well be more work. The pbuf chains will be slightly
longer on average.

Your 1% number is rather small. Did you measure a variance as well?



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