Re: How do I set send and recv buffers using curl-loader

[Robert I. <cor...@gm...>]

Hi Paddy,

On Fri, Aug 28, 2009 at 8:39 PM, Paddy Ganti <pad...@gm...> wrote:

> First off, thank you for the prompt response and supporting this wonderful
> tool.
>
>  On Wed, Aug 26, 2009 at 11:05 PM, Robert Iakobashvili <
> cor...@gm...> wrote:
>
>> I have no idea about httpperf, but may be other users have some
>> experience.
>
>
> http://httperf.comlore.com/Home gives you some idea of recent advances to
> the original paper (
> http://www.hpl.hp.com/research/linux/httperf/wisp98/httperf.pdf)
>
>>
>>
>> Neither we nor libcurl (the HTTP stack) are playing with socket default
>> buffers at linux.
>> There is no point in playing with them for a web-client.
>
>
> It is critical for WAN latencies. If the buffers are too small, like they
> are when default values are used, the TCP congestion window will never fully
> open up (particularly on long fat networks)
>

If you would like to make patches for libcurl and curl-loader to make this
configurable,
I can guide you.


-- 
Truly,
Robert Iakobashvili, Ph.D.
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