[WDSCI-L] Re: Re: Re: Opening a member without filters

["Phil Coulthard" <coulthar@xxxxxxxxxx>]

Paul, where was this article you read? George Farr and I have an article in
iSeries
mag in May, but if I recall we said WDSC has all of SEU's function. I don't
recall
us writing it is faster. Specifically, we said "is now competitive with, or
exceeds
SEU and PDM in terms of function". But maybe its another article you are
referring to.

Because we have to download data over a network, and convert from EBCDIC to
Unicode, the first edit will never be faster in WDSC than it is in SEU,
which merely
has to read it out of the database member and directly into a user space.
However,
by caching the member locally we are able to get close to SEU's performance
on
subsequent opens if it hasn't been changed by someone else in the meantime.
This is similar to adding it to a project, such that you are editing a
local copy. In this
case is only our parser that is overhead beyond what SEU has, which doesn't
color.

That being said, we are always experimenting to find different methods for
doing
the initial read and pulldown. We've tried jdbc and direct record access
via the
toolbox, and a couple other options. We will continue to look the best. For
example,
for those sites that have ftp turned on, we could allow you via preferences
to let us
use ftp for the transfer, which is the single faster known transfer
mechanism, I believe.

We also are constantly reviewing the parser code to look for opportunities
to squeeze
more performance out of it. We made strides in getting lists, transfering
files, and in
parsing files in the 5.0 release, and we will continue to work on the
performance of
all these in subsequent releases.  We do appreciate and need all feedback
as to
remaining problem areas so we can reproduce and flatten problems as best we
are able.

Phil Coulthard,  iSeries AD,  IBM Canada Ltd. coulthar@xxxxxxxxxxx