Hello postgres wizards,
We recently upgraded from 8.1.5 to 8.4
We have a query (slow_query.sql) which took about 9s on 8.1.5
On 8.4, the same query takes 17.7 minutes.
The code which generated this query is written to support the
calculation of arbitrary arithmetic expressions across
On Wed, Sep 23, 2009 at 10:35 PM, Tom Lane t...@sss.pgh.pa.us wrote:
One thing that is hobbling the performane on 8.4 is that you have
work_mem set to only 1MB
Other things you might try include increasing join_collapse_limit
to 12 or so, and reducing random_page_cost.
Another thing to
Hello postgres wizards,
We recently upgraded from 8.1.5 to 8.4
We have a query (slow_query.sql) which took about 9s on 8.1.5
On 8.4, the same query takes 17.7 minutes.
The code which generated this query is written to support the
calculation of arbitrary arithmetic expressions across variables
Beck ja...@singlebrook.com
To: pgsql-performance@postgresql.org
Cc: Leon Miller-Out l...@singlebrook.com
Sent: Wednesday, September 23, 2009 12:53:15 PM
Subject: [PERFORM] Slow query after upgrade to 8.4
Hello postgres wizards,
We recently upgraded from 8.1.5 to 8.4
We have a query
Hello postgres wizards,
We recently upgraded from 8.1.5 to 8.4
We have a query (slow_query.sql) which took about 9s on 8.1.5
On 8.4, the same query takes 17.7 minutes.
The code which generated this query is written to support the
calculation of arbitrary arithmetic expressions across variables
