MODULE LOAD TIME ISSUE

santhosh_89 has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks

I have a module called USER_DBI,It would be included following modules.


        package USER_DBI;
                
              use USER_DBI_Global; # 15 Lines code
BEGIN{
        unshift(@INC, $USER_DBI_Global::INI_Module);
}
use Config::Abstract::Ini; ### CPAN Module
use Switch;      ### CPAN
use USER_DBI_Parser;  ### 1 sec 400 lines code
use USER_DBI_Lib;     ### 2 sec  500 lines code
use USER_DBI_Log;      ### 1 sec  400 Lines code
use USER_DBI_Database; ### 1 sec   300 lines code
[download]

While including the USER_DBI module,It is taking 4 sec to load those modules,I checked by benchmark module to get to know the load time.I wanted to use effective method can anyone help me.
Note: Every Module has required functionality.Reducing the code size is not possible.Already it has optimized.

Comment on MODULE LOAD TIME ISSUE Download Code

Replies are listed 'Best First'.
Re: Module load time issue by FalseVinylShrub (Chaplain) on Oct 29, 2009 at 06:23 UTC
That seems like rather a long time to load modules of this size. Are the modules doing anything other than defining subroutines? e.g. attempting to connect to a server, code generation or something. Have you tried benchmarking what happens within the modules at load time? It sounds like more is happening than just loading some code. HTH, F.V.S. update: unshouted the title	[reply]
Re: MODULE LOAD TIME ISSUE by cdarke (Prior) on Oct 29, 2009 at 08:30 UTC
First, `Switch` is deprecated and should not be used, although your numbers imply this is not the issue. Find out what your USER_DBI modules are doing at compile time: the number of lines of code is a poor indication. They might, for example, connect to a database in a `BEGIN` block and wait for a DB service to respond. They might be connecting to another machine through a socket; they might be calculating the number of molecules in the universe in a `BEGIN` block for all I know. There are several other blocks that get executed at module load time as well, and they could be using any or all of them.	[reply] [d/l] [select]
Re: MODULE LOAD TIME ISSUE by Anonymous Monk on Oct 29, 2009 at 05:51 UTC
Already it has optimized. You're using a source filter, so how is that possible?	[reply]