On Thu, Apr 11, 2024 at 08:52:29AM -0700, Tim Daly wrote:
> src/share/algebra/compress.daase can be trivially removed by
> expanding the symbols back into place.
Yes, this was done about two month ago. More precisely, for
several years compression was disabled by default (could be
turned on by changing value of a flag). Two months ago I
removed compression code and compress.daase.
> I created this database
> so I could run on MSDOS 3.5 inch diskettes. It is useless overhead.
>
> In general the databases exist to overcome space limitations on
> the mainframe. At minimum they should be mmap-ed for performance.
> More useful would be storing them as in-memory hash tables rather
> than essentially simulating hash tables using disk seeks.
Well, we need to store information somewhere. In principle
everything is in 'index.KAF' files, but reading 4 database files
is much faster than reading 1387 'index.KAF' files. Note that
database info is cached: it is read as needed and stored in memory
data structure.
Keeping database info inside image probably would be faster, but
image is binary, while current database info is human readible.
So there current form has significant advantage for debugging.
--
Waldek Hebisch
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