Re: Remove xmin and cmin from frozen tuples
Josh Berkus <josh@agliodbs.com>
From: Josh Berkus <josh@agliodbs.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>, pgsql-hackers@postgresql.org, ITAGAKI Takahiro <itagaki.takahiro@lab.ntt.co.jp>
Date: 2005-09-01T16:13:41Z
Lists: pgsql-hackers
Tom, > THe only fundamental disadvantage that COPY labors under is having to > write WAL records. It might be interesting to do something similar to > the recent hacks for CREATE TABLE AS, so that a COPY into a table just > created in the current transaction would skip writing WAL and instead > fsync the table at the end. Yes, I thought we discussed doing this for empty tables -- it would be, per our tests, a +10% to +30% boost to COPY. But there was some problem the patch? -- Josh Berkus Aglio Database Solutions San Francisco