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FTP run from shell script gives slow transfer rates

 
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Old 04-07-2009
FTP run from shell script gives slow transfer rates
Hey everybody, this is my first post so be gentle. I have two Sun 5220's running Solaris 10 that are directly connected with a cross-over cable at Gig. One of these boxes is my production Oracle server which generates a 50GB dump file every evening at 10:50. The other Solaris is a devolopment server that is identical to the production. While they are attached to the network using IPMP and two of the NICs, I have 1 extra NIC dedicated to this private network between boxes. I am trying to script the FTP transfer between servers.

Here is the issue. When I run FTP interactively from Server A (prod) and do a put, I can transfer the file in 35 minutes or so. However when i run the same FTP commands in a shell script takes 5-7 hours to complete. I have thought maybe this is a priority issue and have looked at NICE, but I am kind of scared to mess with processor priority on my production database server.

Here is my script with then names changed to protect the innocent. I run this script from Server A (prod). It is pretty straight forward, so I really don't think their is a problem with the code. Something is causing it run 10 times slower when run from a script. Thanks in advance to anyone who can help me here.

#!/bin/sh
HOST="192.168.1.2"
USER="user"
PASSWD="passwd"

cd /u14/exp

ftp -in $HOST <<END_FTP
quote USER $USER
quote PASS $PASSWD
cd /u11/exp
put file.dmp
quit
END_FTP
EOF
 
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LEARN ABOUT DEBIAN

io::all::ftp

IO::All::FTP(3pm)					User Contributed Perl Documentation					 IO::All::FTP(3pm)

NAME

       IO::All::FTP - Extends IO::All to FTP URLs

SYNOPSIS

	   use IO::All;

	   "hello world
" > io('ftp://localhost/test/x');  # save to FTP
	   io('ftp//example.org/pub/xyz') > io('xyz');	    # GET to file

	   # two ways of getting a file with a password:
	   $content < io('ftp://me:secret@example.org/xyz');
	   $content < io('ftp://example.org/xyz')->user('me')->password('secret');

DESCRIPTION

       This module extends IO::All for dealing with FTP URLs.  Note that you don't need to use it explicitly, as it is autoloaded by IO::All
       whenever it sees something that looks like an FTP URL.

METHODS

       This is a subclass of IO::All::LWP. The only new method is "ftp", which can be used to create a blank IO::All::FTP object; or it can also
       take an FTP URL as a parameter. Note that in most cases it is simpler just to call io('ftp//example.com'), which calls the "ftp" method
       automatically.

OPERATOR OVERLOADING

       The same operators from IO::All may be used. < GETs an FTP URL; > PUTs to an FTP URL.

SEE ALSO

       IO::All::LWP, IO::All, LWP.

AUTHORS

       Ivan Tubert-Brohman <itub@cpan.org> and Brian Ingerson <ingy@cpan.org>

COPYRIGHT

       Copyright (c) 2007. Ivan Tubert-Brohman and Brian Ingerson. All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       See <http://www.perl.com/perl/misc/Artistic.html>

perl v5.10.0							    2007-03-29							 IO::All::FTP(3pm)