| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Christopher Browne <cbbrowne(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: autovacuum not prioritising for-wraparound tables |
| Date: | 2013-01-31 19:40:14 |
| Message-ID: | 20130131194014.GC4883@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Alvaro Herrera escribió:
> Okay, here's a patch along these lines. I haven't considered Jim's
> suggestion downthread about discounting dead tuples from relpages; maybe
> we can do that by subtracting the pages attributed to dead ones,
> estimating via tuple density (reltuples/relpages).
Patch attached.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| autovacuum-toast-wraparound-2.patch | text/x-diff | 11.5 KB |
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