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Re: OID vs overall system performances on high load

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Eric Lauzon" <eric(dot)lauzon(at)abovesecurity(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: OID vs overall system performances on high load
Date: 2005-05-29 21:47:18
Message-ID: 18634.1117403238@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
"Eric Lauzon" <eric(dot)lauzon(at)abovesecurity(dot)com> writes:
> I am still in the dark due to my lack of knowledge on internal OID management,but
> i would presume that a table with OID enable and that has high load would require
> some more work from pgsql internal to maintain the OID index for the database.

There is no "OID index"; at least not unless you choose to create one
for a given table.  The only thing particularly special about OID is
that there is an internal database-wide sequence generator for assigning
new values.  Otherwise it works a whole lot like a serial column.

			regards, tom lane

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