Re: Page Checksums + Double Writes

Kevin Grittner <kevin.grittner@wicourts.gov>

From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>

To: "Benedikt Grundmann" <bgrundmann@janestreet.com>

Cc: "Simon Riggs" <simon@2ndquadrant.com>, <alvherre@commandprompt.com>,<david@fetter.org>, "Jeff Janes" <jeff.janes@gmail.com>, "Robert Haas" <robertmhaas@gmail.com>, <pgsql-hackers@postgresql.org>, <tgl@sss.pgh.pa.us>

Date: 2012-01-05T15:04:50Z

Lists: pgsql-hackers

Benedikt Grundmann <bgrundmann@janestreet.com> wrote:
 
> For what's worth here are the numbers on one of our biggest
> databases (same system as I posted about separately wrt
> seq_scan_cost vs random_page_cost).
 
That's would be a 88.4% hit rate on the summarized data.
 
-Kevin