Greg Smith wrote:
On Tue, 10 Feb 2009, justin wrote:

http://www.varlena.com/GeneralBits/Tidbits/annotated_conf_e.html
checkpoint_segments
Maximum distance between automatic WAL checkpoints, in log file segments (each
segment is normally 16 megabytes).

Increase these settings if your database has lots of large batch writes to decrease the frequency of checkpoints (and thus lower disk activity). Decrease them if you are short on disk space or your environment has a significant risk of unexpected power-outs, as any un-checkpointed transactions will dropped on
restart.

You mentioned getting to there via http://wiki.postgresql.org/wiki/Performance_Optimization

You'll note that link is disclaimed with "older version of material covered in the GUC tour", and it's aimed at PostgreSQL 7.4. If you read the current version of that document at http://www.pgcon.org/2008/schedule/attachments/44_annotated_gucs_draft1.pdf
you'll see that text you've noted is incorrect isn't there anymore.

--
* Greg Smith gsm...@gregsmith.com http://www.gregsmith.com Baltimore, MD

Not to be overly nick picking where is the version called out that it applies to. Stating Older version is vague

If this new version annotated config file is correct then I can add a new page detailing out the the different annotated config for the different versions to the wiki.

--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance

Reply via email to