On Tue, Mar 13, 2012 at 10:10:02PM +0200, Peter Eisentraut wrote: > On tis, 2012-03-13 at 15:44 -0400, Tom Lane wrote: > > I wonder whether it'd be worth recommending that people do an initial > > ANALYZE with a low stats target, just to get some stats in place, > > and then go back to analyze at whatever their normal setting is. > > Perhaps going even further, ANALYZE could have a quick-and-dirty mode, > where it just analyzes say 10 random pages per table and fills in as > much data as it can from that. And then it does the real analyze. (Or > it could even insert fake statistics to trigger autoanalyze.) That way, > you could have a database back in business in less than a minute.
OK, good idea. Kevin, can you test this: PGOPTIONS='-c default_statistics_target=10' vacuumdb --all --analyze-only Is it faster? Thanks. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
