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  1.  Home
  2. RPG400-L
  3. November 2009

Re: Service Program Overhead

James Perkins wrote:
It seems that the invocation of subprocedures in a service program
significantly slows down performance. I invoke 2 subprocedures on each write
to the stream file, a replace all subprocedure and the write line
subprocedure. So, for the question, what kind of overhead is there when
invoking subprocedures from a service program? I'm sure there is information
on this, I just can't seem to find it.

I'm sure there is SOME overhead in calling a procedure in a service program ... but it's negligible at best (I'm pretty sure this has been discussed here or in MIDRANGE-L before).

The majority of code I write these days is almost 80% procedures in service programs ... and I haven't had a performance problem at all.

Are you doing anything funky in the service programs ... reclaiming activation groups, setting on LR, etc?

How is your service program defined as far as activation groups? *CALLER, named, *NEW?

david


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