On Wed, 28 Apr 2004, phreakfish - EMAN wrote:

> I transferred files from/to MVL to/from Windows, and here are the results:
> Average transfer with MVL as FTP host: 1MB/s (8Mbps)
> Average transfer with WinXP (war-ftp) as ftp host:
> for get: 5MB/s (40Mbps)
> for put: 10MB/s (80Mbps)
> 
> For the NFS transfer, i copied files of various sizes from Redhat to MVL. 
> (Redhat is the "host"). The average transfer speed for this is 3MB/s (24Mbps).
> 
> I need to find some documentation/anything to support my claim that this 
> could really transfer at 100Mbps.
> I'm still searching google, but it might be easier to ask around. TIA.

100 Mbps is raw throughput.
100 Mbps typically has a actual throughput of about 20 to 80 Mbps.
and may differ depending on CPU speed, quality of cables, I/O speed and 
network card.   It may also depend on what the CPU is doing at that time.
I also noted that you multiplied  MB/S by 8 to get Mbps.  This is not
necessarily so since a packet has quite a number of overheads (headers and
trailers).  Furthermore, the protocol (nfs, ftp, etc) also has its own
overhead and further slows it down.  
Summary: if you get around 50 to 80 Mbps you're ok.


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