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List:       zodb-dev
Subject:    Re: [ZODB-Dev] Re: ZODB Benchmarks
From:       David Binger <dbinger () mems-exchange ! org>
Date:       2007-11-07 13:25:56
Message-ID: 671120B3-973A-408F-B35F-3D2F54BB89A3 () mems-exchange ! org
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On Nov 6, 2007, at 2:30 PM, Roché Compaan wrote:

>> If you can cut the b-node branching factor in half, I bet your
>> benchmark will run almost twice as fast.
>
> I increased the 'DEFAULT_MAX_BUCKET_SIZE' from 30 to 30000 and
> DEFAULT_MAX_BTREE_SIZE from 250 to 2500 and it didn't make any
> noticeable difference. Despite this change there are still a huge  
> amount
> of unexplained calls to the 'persistent_id' method of the ObjectWriter
> in serialize.py.

I can see here that what I wrote was not clear.  I intended
to say that the *smaller* bucket size should be faster for this because
the size of each committed transaction would be smaller.







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