[EMBOSS] dbxflat / dbiflat

[ajb at ebi.ac.uk]

Dear Ulrich,

> But the job runs very very long. As an example, the dbiflat for fun*.dat
> tooks about 1:30 Min CPU time - the dbxflat for the same file tooks more
> than 20 Min CPU time.
>
> Is that normal?

It is certainly believable, depending on the resource settings. For
the id, acc and sv indexes the dbx* programs have to create B+ trees;
for the org, key & des indexes the dbx* programs have to create
B+trees-of-B+trees. The extra work involved will account for the
extra CPU. The B+ structures do allow for future on-the-fly updating of
the indexes. The dbi* programs create much more simple indexes: but
not updateable ones.

The dbx* programs are still beta and some speedups can be
introduced in later releases.

HTH

Alan