10/100 NICs

[Felix Rauch]

On Mon, 12 Mar 2001, James Alton wrote:
> Also, is gigabit worth it to put in every node? (What type of speed
> would I expect from gigabit? 1000Mbits/sec? lol.)

On our older 400 MHz PII cluster with Linux kernel 2.2.x we got a TCP
performance with the standard Linux TCP stack of about 42 MB/s. With 
"speculative defragmentation" and true zero-copy we were able to
sustain about 65 MB/s [1].

Now that we upgraded our cluster to 1 GHz PIII (STL2 boards) with
Linux kernel 2.4.1, we get a standard TCP performance of over 100
MB/s.

- Felix

[1] http://www.cs.inf.ethz.ch/CoPs/publications/
-- 
Felix Rauch                      | Email: rauch at inf.ethz.ch
Institute for Computer Systems   | Homepage: http://www.cs.inf.ethz.ch/~rauch/
ETH Zentrum / RZ H18             | Phone: ++41 1 632 7489
CH - 8092 Zuerich / Switzerland  | Fax:   ++41 1 632 1307