David Miller wrote:
From: jamal <[EMAIL PROTECTED]>
Date: Wed, 08 Aug 2007 11:32:34 -0400
Think of a box where you have other network interfaces, the way you
are implementing currently implies you are going to be very unfair to
the other interfaces on the box.
This was the point I was trying to make the other day.
Agreed. That's one of the big selling points of NAPI when I talk to
people -- the entire system works towards a single equilibrium, when
multiple interfaces are under load.
And conversely, without NAPI, the driver has no knowledge of conditions
outside its limited view, and resource imbalances inevitably ensue.
Particularly so for infiniband, 10gb, etc. where the natural motivation
of the driver writer appears to trend towards "performance even at the
expense of other system entities."
Jeff
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