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  1.  Home
  2. RPG400-L
  3. November 2005

RE: RE: Optimizing File I-O in RPG IV/ I-Series

All,

I think the most important part of the equation, performance-wise, is
record blocking. You can tweak it if you use READ, but not if you use
READE. Record blocking can make a HUGE difference in performance, if
done properly.

Good blocking value = ODP-buffer-size / record-length (rounded down to
nearest whole number)

If you're talking about 'typical' files here, which don't use ALTSEQ et
al in their keys, then READ + key-check will CERTAINLY be faster than
READE, if you use record blocking.

Rory

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