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Optimizing TransactionIdIsCurrentTransactionId() - Mailing list pgsql-hackers

From Simon Riggs
Subject Optimizing TransactionIdIsCurrentTransactionId()
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Msg-id CANP8+jKAzzh0U2KaLtmR6urHXDysSLwow56obXZkbDcmK-Eqzg@mail.gmail.com
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Responses Re: Optimizing TransactionIdIsCurrentTransactionId()  (Robert Haas <robertmhaas@gmail.com>)
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TransactionIdIsCurrentTransactionId() doesn't seem to be well optimized for the case when an xid has not yet been assigned, so for read only transactions.

A patch for this is attached.

--
Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Solutions for the Enterprise
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