On Wed, Mar 17, 2010 at 7:30 AM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > Greg Smith <greg@xxxxxxxxxxxxxxx> writes: >> Rob Wultsch wrote: >>> At a minimum I assume that if both of the commands were started at >>> about the same time they would each scan the table in the same >>> direction and whichever creation was slower would benefit from most of >>> the table data it needed being prepopulated in shared buffers. Is this >>> the case? > >> This might be optimistic; > > No, it's not optimistic in the least, at least not since we implemented > synchronized seqscans (in 8.3 or thereabouts). > > regards, tom lane > Where can I find details about this in the documentation? -- Rob Wultsch wultsch@xxxxxxxxx -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
