"Kevin Grittner" <Kevin.Grittner@wicourts.gov> writes:
> Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> I'm still not convinced that using shared memory is a bad way to
>>> pass these around. Surely we're not talking about large numbers
>>> of them. What am I missing here?
>>
>> They're not of a very predictable size.
> Surely you can predict that any snapshot is no larger than a fairly
> small fixed portion plus sizeof(TransactionId) * MaxBackends?
No. See subtransactions.
regards, tom lane
