Beyond FTP Feature Tour
Beyond FTP Script
Editor - Speed Command
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The Speed command allows you to control the resources used
by individual transfers. Positive and negative speeds are not symmetrical. A
positive setting (preceding the numeric value with a plus sign) increases
the number of messages that are simultaneously placed on the network. This
is an increase over the default value of 1. Therefor, a +1 setting results
in two messages being used. More messages increases throughput, line
utilization, and overhead. The limit is +5 (six messages at 4k per message).
This value applies to each transfer, so care must be exercised when
MaxPerServer and MaxServers result in a large number of simultaneous
transfers.
A negative setting, on the other hand, reduces the number of messages to 1
and places a delay in the inter-message time. The delay is equal to the
value in tenths of seconds. For example, a setting of -5 inserts a ½ second
delay between each message. This can greatly reduce the bandwidth devoted to
a Beyond FTP transfer, which may be desirable when the connection is busy
with higher priority traffic.
Speed values remain in effect until the occurrence of another Speed command,
or the script exits the block in which the command occurs. Specifying Off
returns the transfer speed to the default value. Like all modifiers, the
speed values are applied at compile time.
Example:
:Speed: +3
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