InstantDB Project
About InstantDB
Project Mail Lists
Short History
Reporting Bugs
Screen Shots
3rd Party Examples
FAQs

Software
Downloads
Documentation
CVS Repositories
Roadmap
License

About Enhydra.org
Who We Are
News, Articles & Events
Getting Involved
Contact Us

Community
Demos
Contributions
Resources
Case Studies
On The Edge! -NEW-
Commercial Vendors

Pierre-Yves

I think InstantDB is maybe having problems re-using deleted blob space 
efficiently. When a blob gets deleted/updated the space released is 
placed on a list of free blobs. These should get re-used. If they're 
not getting reused then that's definitely a bug.

Also, InstantDB doesn't concatenate free adjacent blobs (there's 
nothing to stop it doing that - the code just hasn't been added yet). 
If you're blobs get progressively bigger then InstantDB won't find any 
free blobs large enough and it will end up creating new ones. Is that 
the case here? Do the your objects grow in size?

Pete

----- Original Message -----
From: "Chevalier, Pierre-Yves" <Pierre-Yves.Chevalier@mkms.xerox.com>
Date: Monday, March 12, 2001 10:45 am
Subject: InstantDB: Table with binary objects keep growing and growing

> Hi,
> 
> I have three tables holding serialized objects. Every time
> I store a new version of an object, the new content gets
> appended to the .blb file while the new version stays forever.
> 
> So for example: storing 10 objects of size 16KB, 400 times
> creates a blob file that is 66MB large! The optimal value
> would be near 160KB.
> 
> This seems related to a problem posted last month:
> 
http://instantdb.enhydra.org/project/mailingLists/instantdb/msg01167.htm
l
> 
> Instead of doing an UPDATE, I tried first removing the tuple
> and then to do a fresh INSERT. Same result. 
> Am I missing something here? 
> 
> I would appreciate your dilligent help on this subject.
> 
> Regards
> --Pitch.
> ----------------------------------------------------------------
> Pierre-Yves Chevalier - Project Leader askOnce
> Xerox Internet Business Group (IBG)
> 6 ch. de Maupertuis, F-38240 Meylan
> Tel: +33 (0)4.76.61.50.93 - Fax: +33 (0)4.76.61.51.89
> mailto:Pierre-Yves.Chevalier@mkms.xerox.com
> ----------------------------------------------------------------
> perso: http://www.xrce.xerox.com/people/pitch/
> public: http://www.xerox.co
> -------------------------------------------------------------------
> ----------
> To unsubscribe from this mailing list, send email to 
> majordomo@enhydra.orgwith the text "unsubscribe instantdb" in the 
> body of the email.
> If you have other questions regarding this mailing list, send 
> email to
> the list admin at owner-instantdb@enhydra.org.
> 

-----------------------------------------------------------------------------
To unsubscribe from this mailing list, send email to majordomo@enhydra.org
with the text "unsubscribe instantdb" in the body of the email.
If you have other questions regarding this mailing list, send email to
the list admin at owner-instantdb@enhydra.org.