Re: New net features for added performance

From: Rusty Russell (rusty@linuxcare.com.au)
Date: Sun Feb 25 2001 - 06:49:39 EST


In message <oupsnl3k5gs.fsf@pigdrop.muc.suse.de> you write:
> Jeff Garzik <jgarzik@mandrakesoft.com> writes:
>
> > Advantages: A de-allocation immediately followed by a reallocation is
> > eliminated, less L1 cache pollution during interrupt handling.
> > Potentially less DMA traffic between card and host.
> >
> > Disadvantages?
>
> You need a new mechanism to cope with low memory situations because the
> drivers can tie up quite a bit of memory (in fact you gave up unified
> memory management).

Also, you still need to "clean" the skb (it can hold device and nfct
references).

Rusty.

--
Premature optmztion is rt of all evl. --DK
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