| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, pgsql-hackers(at)postgresql(dot)org, Merlin Moncure <mmoncure(at)gmail(dot)com> |
| Subject: | Re: Do we need so many hint bits? |
| Date: | 2012-11-16 09:40:07 |
| Message-ID: | CA+U5nMJ5_7WqYjopVLQRwNto1QyESvVjv=PJ7P80YWuUFwpbWg@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 15 November 2012 23:12, Simon Riggs <simon(at)2ndquadrant(dot)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
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Etsuro Fujita | 2012-11-16 09:41:44 | Re: WIP patch: add (PRE|POST)PROCESSOR options to COPY |
| Previous Message | Albe Laurenz | 2012-11-16 09:36:13 | Re: support for LDAP URLs |