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Re: Do we need so many hint bits? - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Do we need so many hint bits?
Date
Msg-id CA+U5nMJ5_7WqYjopVLQRwNto1QyESvVjv=PJ7P80YWuUFwpbWg@mail.gmail.com
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In response to Re: Do we need so many hint bits?  (Simon Riggs <[email protected]>)
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On 15 November 2012 23:12, Simon Riggs <[email protected]> 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

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