Re: vacuum analyze again...

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Chris Jones <chris(at)mt(dot)sri(dot)com>
Cc: PostgreSQL General <pgsql-general(at)postgresql(dot)org>
Subject: Re: vacuum analyze again...
Date: 2001-02-20 17:25:12
Message-ID: 200102201725.MAA07254@candle.pha.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>
> > No, we have no ability to randomly pick rows to use for estimating
> > statistics. Should we have this ability?
>
> That would be really slick, especially given the fact that VACUUM runs
> much faster than VACUUM ANALYZE for a lot of PG users. I could change
> my daily maintenance scripts to do a VACUUM of everything, followed by
> a VACUUM ANALYZE of the small tables, followed by a VACUUM ANALYZE
> ESTIMATE (or whatever) of the large tables.
>
> Even cooler would be the ability to set a table size threshold, so
> that VACUUM ANALYZE would automatically choose the appropriate method
> based on the table size.

Added to TODO:

* Allow ANALYZE to process a certain random precentage of rows

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

In response to

Responses

Browse pgsql-general by date

  From Date Subject
Next Message Louis-David Mitterrand 2001-02-20 17:27:07 strategies for keeping an audit trail of UPDATEs
Previous Message Chris Jones 2001-02-20 17:21:56 Re: vacuum analyze again...