Re: Page Checksums + Double Writes

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: "Benedikt Grundmann" <bgrundmann(at)janestreet(dot)com>
Cc: "Simon Riggs" <simon(at)2ndquadrant(dot)com>, <alvherre(at)commandprompt(dot)com>,<david(at)fetter(dot)org>, "Jeff Janes" <jeff(dot)janes(at)gmail(dot)com>, "Robert Haas" <robertmhaas(at)gmail(dot)com>, <pgsql-hackers(at)postgresql(dot)org>, <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: Page Checksums + Double Writes
Date: 2012-01-05 15:04:50
Message-ID: 4F0567B202000025000443DD@gw.wicourts.gov
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Benedikt Grundmann <bgrundmann(at)janestreet(dot)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

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