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  2. RPG400-L
  3. November 2003

Re: performance comparisons between OPM & ILE

G Armour wrote:

Question about this quote from a performance tip published at
http://search400.techtarget.com/tip/1,289483,sid3_gci933768,00.html (The quote 
is a
sidebar of an unrelated but interesting performance tip involving WRKDSKSTS) :

If you're still running OPM programs, you're suffering considerably at the hands of ILE. As you know, OPM programs run slower than their ILE counterparts: Because the native environment on Version 3 is ILE, the OPM environment has to be emulated.

Did I miss this class? OPM is emulated?

<rest of orginal note snipped>

There are many reasons why ILE programs tend to perform better than OPM programs (such as better optimization of executable instruction streams and the ability to make procedure calls that are faster than OPM program calls) but OPM programs are not emulated.

--
Paul Godtland
plg@xxxxxxxxxx; Rochester, MN



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