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We had a discussion about this on the RPG-L list last week,
And referred to an even earlier discussion here:
http://archive.midrange.com/rpg400-l/200503/msg00881.html

The upshot is that there is no bug, but the way READE was designed
prevents it from taking advantage of record blocking, so it has to hit
the actual file for each record it fetches, rather than reading it from
memory.



>-----Original Message-----
>From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
>bounces@xxxxxxxxxxxx] On Behalf Of Rich Duzenbury
>Sent: Wednesday, December 14, 2005 12:58 PM
>To: Midrange Systems Technical Discussion
>Subject: RE: Usage of Indexes and its Effects on an RPG Program
>
>
>> On a wider note, it sounds like you are trying to improve
performance.
>> I've been preaching here a couple times in the last few weeks about
the
>> hazards of using READE over a large data set, since it doesn't read
from
>> a block of records in memory, but actually hits the file for every
read.
>
>It sounds like you are describing a bug.  I can't think of a single
>reason why READE should not perform nearly as well as READ, other than
>the overhead of the key comparisons.
>
>How badly does it perform, in comparison to a READ?
>
>If it's not been implemented properly by IBM than we should file a bug
>report.  Has anyone filed a PMR on this matter?
>
>Regards,
>Rich
>
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