scp vs ftp performance on SGI IRIX????????

[Darren Tucker]

Jay Chen wrote:
> Running OpenSSH 3.5p1 or 3.7.1p2 on two SGI orgin 300 systems of IRIX
> 6.5.17 with
> 4 600MHz CPU and gigabits network.
> 
> Transfer a 1GB file with ftp took 28 seconds.
> Transfer a 1GB file with scp took 148 seconds.
>
> Use "snoop" to capture all network packets between these two systems. Ftp
> tansmitted
> about 107840 packets, but scp transmitted about 763339 packets.

Wild guess: does changing the shell pipe size (probably "ulimit -p") make
any difference to scp?  What's it set to by default?

Also, do you have compression on or off?

-- 
Darren Tucker (dtucker at zip.com.au)
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