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Date: Thu, 27 Jun 2002 12:53:32 -0700 (PDT)
From: Nivedita Singhvi <niv@us.ibm.com>
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To: <hurwitz@lanl.gov>
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Subject: Re: zero-copy networking & a performance drop
Message-ID: <Pine.LNX.4.33.0206271248260.13115-100000@w-nivedita2.des.beaverton.ibm.com>
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> Now, here is my direct question: has a zero-copy TCP stack 
> been introduced after 2.4.3 (which we're running)? I believe 
> the answer is yes, but I've not been able to find direct confirmation. 
> If the answer is yes, does anything special need to be done 
> (in terms of allocating/working with skbs, or passing the packets 
> up to higher levels) in order to use the zero-copy implementation.

Yes, 2.4.4.  You should upgrade to that if possible, or rather,
a much more recent version..

That said, rx has been slower than sends in most of our testing
too. 


thanks,
Nivedita


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