[URGENT]: Cal. Buffer Size based on User i/p Bandwidth In 1Gbps 802.3

[URGENT]: Cal. Buffer Size based on User i/p Bandwidth In 1Gbps 802.3
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[URGENT]: Cal. Buffer Size based on User i/p Bandwidth In 1Gbps 802.3 Mahesh 06-30-2008
Posted by Mahesh on June 30, 2008, 1:05 am
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Hi all,

I wanted to calculate UDP send buffer size based on Bandwidth given by
User.

It works like this:

user bandwidth i/p = 300 Mbps

based on above bandwdith i want to calculate buffer size so that i can
achieve that user specified bandwidth.

buffer is filled frame by frame and there by traffic is generated.

This whole is working in Data Link Layer.

i have config: 1Gbps ether Card with dual core pc with 2GB ram.

I am sending UDP traffic to another m/c.

Please let me know how to go about it.

Thanks a lot in advance.

Posted by Robert Redelmeier on June 30, 2008, 10:22 pm
> I wanted to calculate UDP send buffer size based on Bandwidth given by
> User. It works like this: user bandwidth i/p = 300 Mbps

You have left out one very important data item: the nature
of your traffic. Hw often items of what size are generated.
Buffers are no cure-all.

Many PCs cannot exceed ~300 Mbps due to limitations on
te PCI bus.


-- Robert


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