On Tue, Sep 29, 2009 at 5:23 AM, tomrevam <tomer@xxxxxxxxx> wrote: > > I have a table with 5 million rows. 10 inserts and deletes are performed on > this table every second. > The table has indexes on the columns I use to query it, and the query is > returning about a 1000 rows. Initially the query takes a very short time > (order of miliseconds), after a few hours it takes hundreds of miliseconds, > and after a few days it can take more than 10 seconds. When this happens it > also blocks all other operations on the database and I see very long times > for all of them. > > I thought this may be caused by the indexes not remaining in the memory, but > I increased the shared_buffers to 0.5 GB and this didn't seem to help. Just wondering, what version of pgsql are you running? I noticed a lot less degradation from heavily updated tables when I went to 8.3 and set the fill % for tables / indexes to 90% or so. If you're running an older version, the upgrade to 8.3 may well be worth the effort. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
