[rescue] SunFastEthernet questions

Dave McGuire mcguire at neurotica.com
Tue Sep 2 18:52:31 CDT 2003

On Tuesday, September 2, 2003, at 07:15 PM, Phil Stracchino wrote:
>>> I'm not sure I can generate enough traffic on the segment to find out
>>> ....
>> Try 'ttcp' for benchmarking.
> Not helpful.

   Not helpful?

>   But, doh! I realized that in my calculations of network
> throughput vs. disk speed, I'd slipped a decimal place.  Transferring a
> 31MB file via ftp from the U60 to /tmp on my Linux box (which is tmpfs,
> so no disk transfer speed issues that end) resulted in a transfer rate
> of 10.88 MB/s.  A direct copy of a 37MB file from an NFS-mounted stripe
> to /tmp yielded 11.2MB/s.  So, by my calculations, I'm getting up to
> about 92 megabits/second.

   That's reasonable.  You'd get a cool 100Mbps with a nice low 
interrupt load if you were using FDDI, and you wouldn't need to switch 
it. :)


Dave McGuire                 "You don't have Vaseline in Canada?"
St. Petersburg, FL                     -Bill Bradford

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