Re: Do we need so many hint bits?

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Jeff Davis <pgsql@j-davis.com>, pgsql-hackers@postgresql.org, Merlin Moncure <mmoncure@gmail.com>
Date: 2012-11-16T09:40:07Z
Lists: pgsql-hackers
On 15 November 2012 23:12, Simon Riggs <simon@2ndquadrant.com> wrote:

> We need detailed stats that allow many people to make their own tests
> and to report on what they find.

To work out how to proceed we need

* wait event times on clog accesses at table-level
* numbers of blocks dirtied by hint bit settings at table-level

That way we can see which tables need to have hint bits set and which don't.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services