Re: brin autosummarization -- autovacuum "work items"
Alvaro Herrera <alvherre@2ndquadrant.com>
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2017-04-01T17:06:01Z
Lists: pgsql-hackers
Robert Haas wrote: > On Tue, Mar 21, 2017 at 4:10 PM, Alvaro Herrera > <alvherre@2ndquadrant.com> wrote: > > Well, the number of work items is currently fixed; but if you have many > > BRIN indexes, then you'd overflow (lose requests). By using DSA I am > > making it easy to patch this afterwards so that an arbitrary number of > > requests can be recorded. > > But that could also use an arbitrarily large amount of memory, and any > leaks will be cluster-lifespan. Good point -- probably not such a great idea as presented. The patch only uses a fixed amount of memory currently, so it should be fine on that front. I think this is a good enough start. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Commits
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BRIN auto-summarization
- 7526e10224f0 10.0 landed