"Stevenson, Charles" <[EMAIL PROTECTED]>  wrote on 
11/22/2005 11:44:26 AM:

> Tim,
> Was transaction logging or data replication used?

You're not the first person to ask that.  Unfortunately these were not 
part of the goals of this load test.


> Can you share any interesting performance stats comparing w/ vs w/o TX
> or DR?

I don't have anything formal to share.  We've done some testing, but don't 
have anything formal.  Naturally, the overhead of these products is highly 
dependent on the nature of the application employed.  Something that does 
a lot of updates will have a different performance profile than something 
that's heavy on reads.  And large record/transaction sizes will create a 
large amount of logging and/or replication activity as compared with 
something that has smaller records and/or transactions.


Tim Snyder
Consulting I/T Specialist , U2 Professional Services
North American Lab Services
DB2 Information Management, IBM Software Group
717-545-6403
[EMAIL PROTECTED]
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