We thank you for the links that have a lots of info and please note that we tuned our servers as recommended by Enterprise DB experts while they were in house for our hardware/software migrations and the setting you mentioned are in place already.
Regards, Lawrence Cohan. -----Original Message----- From: Kevin Grittner [mailto:kevin.gritt...@wicourts.gov] Sent: March-30-11 12:45 PM To: pgsql-bugs@postgresql.org; Lawrence Cohan Subject: Re: [BUGS] Postgres not using indexes Lawrence Cohan <lco...@web.com> wrote: > We have a huge performance issues in Postgres that surfaced due to > existing indexes not being used This doesn't sound like a bug; it sounds like you haven't tuned your server. For starters, you should check out this page: http://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server As a quick try, you could issue these statements on the connection right before one of the problem queries: set effective_cache_size = '7GB'; -- use 1 or 2 GB less than RAM on the machine set random_page_cost = 2; -- now try your query If, after reading the above-cited page and tuning your server you still have performance problems, pick one query to work on first, and follow the step outlined here: http://wiki.postgresql.org/wiki/SlowQueryQuestions Use the pgsql-performance list for performance issues, not the bugs list. You'll find more people who will be able to help you with performance issues there. -Kevin Attention: The information contained in this message and or attachments is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any system and destroy any copies. -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs
