[Fwd: zero-copy TCP]

From: Jeff V. Merkey (jmerkey@timpanogas.com)
Date: Sat Sep 02 2000 - 17:11:47 EST


attached mail follows:

Jes Sorensen wrote:
> >>>>> "Jeff" == Jeff V Merkey <jmerkey@timpanogas.com> writes:
> Jeff> Jes,
> Jeff> I wrote the SMP ODI networking layer in NetWare that used today by
> Jeff> over 90,000,000 NetWare users. I also wrote the SMP LLC8022
> Jeff> Stack, the SMP IPX/SPX Stack, and the SMP OSPF TCPIP stack in
> Jeff> NetWare. I think I know what the hell I'm doing here. Most
> Jeff> Network protocols assume a primary/secondary relationship. The
> Jeff> faster you can get requests in and out of a server, the faster the
> Jeff> response time on the client for remote file system operation.
> You look at network file system issues and generalize that to generic
> networking. I am sorry but I do not think you know a whole lot about
> high speed networking. You forget that when talking about fast
> networking it depends on what you define as fast. Some people consider
> file serving performance others are interested in fast memory to memory
> transfers (from data aquisition servers to client processing units for
> instance). For bulk data transfers on high speed networks (note I do not
> consider 100Mbit/sec Fast Ethernet as a fast network) the real issue is
> pipelining through socket buffers and large TCP windows and not latency.
> Besides, the fact that there are 90M netware boxes around doesn't matter
> when most of them are running IPX - IPX is braindamage and has nothing
> to do with proper networking.
> Jeff> What I wrote is THREE TIMES FASTER THAN WHAT'S IN LINUX. Care to
> Jeff> do a challenge. Let's take my NetWare code and see which is
> Jeff> faster and lower latency on a Network. Mine or Linux's. I bet
> Jeff> you $100.00 it will beat the Linux code in every test.
> I'd love to see a netware box sustain 110MB/sec (MB as in mega byte)
> memory to memory in two TCP streams between dual 400MHz P2 boxes.

What the hell does a NUMA interconnect have to do with networking. Who
would be braindead enough to waste processing cycles passing Network
data over a NUMA fabric anyway. There's a lot more efficient ways to
connect to boxes with NUMA than using a TCPIP stack on a NUMA


> Jes

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

This archive was generated by hypermail 2b29 : Thu Sep 07 2000 - 21:00:14 EST