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Re: Wrong plan sequential scan instead of an index one
- From: Gaetano Mendola <mendola(at)bigfoot(dot)com>
- To: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
- Cc: Claus Guttesen <kometen(at)gmail(dot)com>
- Subject: Re: Wrong plan sequential scan instead of an index one
- Date: Fri, 30 Mar 2007 12:08:26 +0200
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Claus Guttesen wrote: >> Hi all, >> take a look at those plans: > > Try changing random_page_cost from the default 4 to 2 in postgresql.conf: > > random_page_cost = 2 > > The default in postgresql is somewhat conservative. This setting > indicates for postgresql how fast your disks are, the lower the > faster. > > Could this setting be changed to 2 as default rather than 4? I have tuned that number already at 2.5, lowering it to 2 doesn't change the plan. Regards Gaetano Mendola -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGDOGa7UpzwH2SGd4RAjvaAKDAbz/vxwyOBPCILGpw8rBSvTFMtACfRPBe yMge0RFfww0ef7xrGBLal7o= =k+RM -----END PGP SIGNATURE-----
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