Re: TCP RDMA option to accelerate NFS, CIFS, SCSI, etc.

["David S. Miller" <davem@redhat.com>]

   Date: Thu, 24 Feb 2000 17:09:51 -0700
   From: "Justin T. Gibbs" <gibbs@freebsd.org>

   In the case of a server response, RDMA benefits the client, not the
   server, so I fail to see why your example is problematic.  Zero
   copy send is not what this standard addresses.

With client memory bus bandwidth in the multi-gigabyte per second
range, who needs to avoid the single copy?  How much NFS and web
surfing does one need to do before this is would really come into
play?

And the bus speeds will just be faster by the time something like
this could be deployed widely.

For example, look at SACK, only within the past year are there a
decent number of systems out there implementing it.  Now how many
years ago did it enter RFC state?  And there are still stacks out
there even in their current development sources not implementing any
form of it.

Later,
David S. Miller
davem@redhat.com