Postgres Pro
Downloads
Home   >   mailing lists

Re: PostgreSQL as a local in-memory cache - Mailing list pgsql-performance

From Bruce Momjian
Subject Re: PostgreSQL as a local in-memory cache
Date
Msg-id 201006231937.o5NJbKp05127@momjian.us
Whole thread Raw
In response to Re: PostgreSQL as a local in-memory cache  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: PostgreSQL as a local in-memory cache
Re: PostgreSQL as a local in-memory cache
List pgsql-performance
Tree view 
Tom Lane wrote:
> Dimitri Fontaine <dfontaine@hi-media.com> writes:
> > Josh Berkus <josh@agliodbs.com> writes:
> >> a) Eliminate WAL logging entirely

If we elimiate WAL logging, that means a reinstall is required for even
a postmaster crash, which is a new non-durable behavior.

Also, we just added wal_level = minimal, which might end up being a poor
name choice of we want wal_level = off in PG 9.1.  Perhaps we should
have used wal_level = crash_safe in 9.0.

I have added the following TODO:

    Consider a non-crash-safe wal_level that eliminates WAL activity

        * http://archives.postgresql.org/pgsql-performance/2010-06/msg00300.php

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + None of us is going to be here forever. +

pgsql-performance by date:

Previous
From: Scott Marlowe
Date:
Subject: Re: WAL+Os on a single disk
Next
From: Bruce Momjian
Date:
Subject: Re: PostgreSQL as a local in-memory cache