On Nov 15, 2008, at 10:03 AM, Andreas Jung wrote:

> Hi there,
> is there a way to analyze the data committed during one transaction?
> The current usecase is Plone. A simple change to a document causes a  
> large transaction (between 30k and 100k even for a one-char change).  
> I am interested to know how many of this data belongs  to the  
> portal_catalog/index and how many are actually changes to the  
> content object itself (or subobjects).

You can use a storage iterator to iterate over the data records in the  
transaction.  You can analyse these records to see things like, their  
number, size and type.

To look at a single transaction, pass the transaction id as the start  
transaction for the iterator. Then call next on the iterator to get an  
iterator for that transaction.


Jim Fulton
Zope Corporation

For more information about ZODB, see the ZODB Wiki:

ZODB-Dev mailing list  -  ZODB-Dev@zope.org

Reply via email to