On 10/9/06, David Brownell <[EMAIL PROTECTED]> wrote:

> > "I need 2ms latency".
> > "Do it the way we're doing it."
> > "Uhh.. that is barely working for 50ms latency right now.  And even if
> > we got optimal performance, it could never theoretically get down to
> > 2ms."
> > "Too bad.  This is The Way."
>
> You have not ** YET ** tried to do it the way that's known to work,
> so it's no surprise you've been seeing the failures which lead to
> the requirement to use double buffering.

Uh... I've been trying to use the existing drivers for about 5 years.
Never worked.  I finally got sick of putting up with it and decided to
try to fix it from the bottom up.

I want 2ms.  Buffering in a two-URB-deep approach is a minumum of 4ms.
What miracle of mathematics will allow that to give me what I want?  I
don't have to jab a pencil up my nose to know ahead of time it will
hurt.

> From where I sit, I see your response as "I refuse to even consider
> using that known-to-work solution, it's My Way Or the Highway."

Tell me how a 4ms deep buffer will give me 2ms latency and I will eat
my words.  It's a promise.

Monty

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