[NCLUG] lftp help needed

John L. Bass jbass at dmsd.com
Mon Jan 6 15:06:20 MST 2003


Michael Milligan <milli at acmeps.com> writes:
> That will rate limit to 128kbps.  (The value is *bytes* per second, so 
> 128/8 = 16k bytes/sec.)

The choice between 15000 and 16384 is the choice between the delivered data
rate to the filesystem, or the data rate at the network interface. There is
about a 10% overhead in TCP/IP for ftp frames including ACK's. 15KBytes/sec
results in about 128kbps at the network interface, and 16.4KBytes/sec results
in about 144kbps at the network interface.

Read the difference between limit-rate and limit-total-rate if you plan to
issue multiple background ftp sessions or use parallel > 1 for a mirror command.

have fun,
John



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