Re: RFC: issues concerning the next NAPI interface

["Mitchell Erblich" <erblichs@earthlink.net>]

Jan-Bernd Themann,

                  IMO, a box must be aware of the speed of all its
interfaces, whether the
                  interface impliments tail-drop or RED or XYZ, the latency
to access the
                  packet, etc.

                  Then when a packet arrives, a timer is started for
interrupt colelesing,
                  and to process awaiting packets, if tail-drop is
implemented, it is
                  possible to wait until a the input FIFO fills to a
specific point before
                  starting a timer.

                  This may maximize the number of packets per interupt. And
realize that
                  the worse case of a interrupt per packet is wirespeed
pings (echo
                  request/reply) of 64 bytes per packet.

                   Mitchell Erblich




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