Re: [WEB400] Re: Serious speed issues...

["Brad Stone" <brad@xxxxxxxxxxxx>]

Well, with %len avaible, what, V3R7, the majority is
growing.  But there still some out there.  Just don't want
to leave anyone out (kinda like the browser thing...
<snicker>).

Trust me, I get a LOT of emails when I don't do things for
early releases.  :)  Then again, there's no reason that
version 2 of my books can't contain these updates.  But
right now there's no need to update them just yet.

But I would also hope that most could make these very minor
changes should they choose to do so.  As I prefer to teach
someone how to do something than just to do it for them with
cut and paste code.

Speaking of which, Hans, you probably have the best idea as
to this.  What is a ballpark figure (say a percentage) of
the performance hit of using a 1024 character field and
using CHECKR as compared to using a varying field and %len?
Using CHECKR I still have excellent performance.  I'd say on
average CHECKR is used about 15 times per page.  If it takes
1.5 seconds to respond, what type of increase one would
expect to see?  What does CHECKR use in the "bowels" fo the
OS to do this checking?  Some sort of array manipulation?
Is that code fine tuned to squeeze more performance out?

Brad

On Tue, 13 Aug 2002 14:24:26 -0400
 Hans Boldt <boldt@ca.ibm.com> wrote:
> Brad Stone wrote:
> > Hah!  Thanks!  Not to mention if Jon is nitpicking
> about
> > just that, musta done everything else ok.  :)  Just
> like to
> > work with those who aren't on V6R2 today as a lot of
> > writers/consultants/speakers do.  That weeds out 75% of
> your
> > audience!
>
> Oh for the record, I do agree with Jon.  I too would
> prefer seeing
> use of varying length character strings and %LEN() (as
> well as
> procedures, descriptive long names, /FREE, etc.) in all
> published
> examples, since those are available on the majority of
> machines and
> are the preferred modern techniques.  Otherwise, your
> books will get
> out of date *very* quickly as older machines are upgraded
> or
> replaced.  You could always state in a footnote that
> CHECKR can be
> used in older, unsupported releases.
>
> Cheers!  Hans
>
>
>
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Bradley V. Stone
BVS.Tools
www.bvstools.com