[Dev] ZODB performance

Michael R. Bernstein webmaven at lvcm.com
Fri Nov 8 18:00:58 PST 2002


On Fri, 2002-11-08 at 17:21, John Anderson wrote:
> 
> Michael R. Bernstein wrote:
> >
> >On Fri, 2002-11-08 at 13:51, John Anderson wrote:
> >>
> >>Trouble is, ZODB has a bunch of problems, for example it's 
> >>dog slow. So I'd like to investigate what would be necessary to make 
> >>ZODB a better solution.
> >
> >Are you talking about write performance or read performance? And are we
> >talking about the ZODB alone, or in the context of Zope?
> >
> My test program for object creation using ZODB4 goes from somewhere 
> around 20,000 objects created per second to 300 per second once you 
> throw in transactions. I'd like to use transactions for undo and 
> resource exaustion recovery.

can you be more specific as to what you mean by 'throw in transactions'?

Are you putting each object creation in a subtransaction, or were you
batching them? If batches, how large were they?

Michael Bernstein.




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