ISPF 3.4, among other tools, can provide the size of the load module.  

But the data in the load module need not include an area defined with a
large DS.  Thus you could have a very large module that occupies only a
little space on disk.

The net result is that load module size does not tell you if any of the
records could benefit from a larger blocksize.  

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]]
> On Behalf Of Lester, Bob
> Sent: Monday, August 11, 2014 3:02 PM
> To: [email protected]
> Subject: Re: Extents more than One for load modules library
> 
> Hi Folks,
> 
>      I've been following this thread.
> 
>      We have some of 32K, some of 1/2 block.  BUT, we also have 19069,
6144,
> etc.  Can I look at the load module size to determine if the module length
is
> greater than the load library blocksize?   Is this a productive use of
time?

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