On Wed, May 27, 2009 at 01:52:23PM -0400, Benjamin LaHaise wrote:

A few questions for you: I've been looking a bit into potential GRO 
optimisations that are possible with the vxge driver.  At least from my 
existing testing on a P4 Xeon, it seems that doing packet rx via 
napi_gro_receive() was a bit slower.  I'll retest with these changes 

Slower compared to LRO or GRO off?

of yours.  What platform have your tests been run on?  Also, do you have 
any notes/ideas on how best to make use of the GRO functionality within 
the kernel?  I'm hoping it's possible to make use of a few of the hardware 
hints to improve fast path performance.

What sort of hints do you have?

There aren't any current support for that but I'm happy to add
things as appropriate.

Thanks,
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