Andrew Gallatin wrote:
Miles Xu wrote:
Paul Durrant wrote:
Andrew Gallatin wrote:
Isn't the overhead to map/unmap the buffer fairly high? Why don't
you keep the buffer mapped?
That was what I was getting at. If the pool is shared amongst
drivers then the buffer has to be unmapped before being recycled (in
case it's allocated by a different driver) thus blowing away most of
the advantage of loanup.
It was also my concern. The original design is not as the current
one. The partial experiments I conducted on e1000g showed no
measurable impacts in terms of throughput. The current design is also
temporary. I may change the design as the experiments continue.
You really need to test on a 10GbE NIC/driver, as I can't imagine that
1GbE NIC will put substantial load on any modern hardware.
I agree. It's what I have planned to do if I would get the hardware
resources. That's why I say it's all the temporary design. And
experiments speak.
Miles Xu
Drew
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