> Yes, but "how hard is it reasonable for the kernel to try" is based on
> both items. A good first order approximation is number of requests.
I must strongly disagree with that claim. A request could be 512 bytes or
128K.
> It's still a queue - the queue of things we're going to take on this
> elevator swipe, right? And the problem is one of keeping a sane
> watermark on this queue - not too many requests to destroy latency
> but enough to let the elevator do some good.
Yes. OK I agree there. If you want an efficiency bound then you need to consider
that.
> > Im talking about flow control/traffic shaping
>
> ...where the user sets a number exlpicitly for what performance they
> want. Again, if we're going to make the user set this latency
No they do not. The parameters are defined by the bandwidth and measured
behaviour.
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