[Seaside] speed of VM vs. speed of database

Chris Muller asqueaker at gmail.com
Sun Dec 4 17:31:41 UTC 2011

Work done straight with the VM will be at least 100X faster compared
to the "same" work done with a database.  To "read" a collection in
the VM (e.g., #do:), just a few bytecodes are executed.  But to do
that with objects in a database means it has to convert the objects in
the database into Smalltalk objects first.  This conversion requires
the execution of thousands of additional bytecodes.

But databases are still useful for the features they provide that
images don't, such has having large models that exceed the size of
memory, or letting multiple users access and update a model at the
same time, or high-availability and consistency, etc.

On Sat, Dec 3, 2011 at 11:56 AM, sergio_101 <sergiolist at village-buzz.com> wrote:
> i am currently developing an app just for fun..
> during my day job, i am a developer using a web framework that
> directly connects to a database (mysql)..
> one of the things we always do is craft our queries to use use the
> database only for all queries and selections. when you use the
> database for anything other than trivial queries, the difference is
> the speed of the query is totally evident..
> i am just wondering how the speed of the smalltalk VM compares to the
> speed of pulling results from a database and shoving them into an
> array..
> thanks!
> --
> ----
> peace,
> sergio
> photographer, journalist, visionary
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