Re: V5R2: Source now allowed in the IFS

[jpcarr@xxxxxxxxxxxx]

I think everyone should read this article.

It goes into why the IFS File structure  didn't perform like lighting
before, and what it's structure is now.
Currently there are 3 to 8 distinct objects for a IFS file,  There will in
the future there will only be one. (V5R2 +/- V5R1 + PTF)
The "Slowness"  of the previous file structure turns out to be the result
of designing for  needs that never materialized.
So the structure is different now and is now somewhere between 1.5x to 4x
faster  (and in some situations even slower).

The article even has a nice chart.
John

--------------------------
<SNIP>

Get Ready to Boost Your IFS Performance with V5R2
by Jeff Parker

In V5R2, shiny new plumbing is available called *TYPE2 directories. *TYPE2
directories are a completely new design, structure, and implementation of
the directory object in the root, QOpenSys, and user-defined file systems
(UDFS). *TYPE2 directories are intended to replace the old *TYPE1 directory
implementation that has existed since the IFS was introduced in V3R1.
*TYPE2 directories incorporate numerous performance optimizations within a
new object structure anchored on an internal system journal to produce a
high-performance, industrial-strength directory.


Whole story is at;
http://www.midrangeserver.com/tfh/tfh082902-story05.html


<SNIP>