Re: Overhead cost of Serializable Snapshot Isolation

> If the normal default_transaction_isolation = read committed and all
> transactions that require serializable are explicitly marked in the
> application then there is no way to turn off SSI without altering the
> application. That is not acceptable, since it causes changes in
> application behaviour and possibly also performance issues.

Performance, perhaps. What application behavior changes? Less 
serialization conflicts?

> We should provide a mechanism to allow people to upgrade to 9.1+
> without needing to change the meaning and/or performance of their
> apps.

That ship has sailed.

-- 
Greg Sabino Mullane greg@endpoint.com
End Point Corporation
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