On 01/09/12 1:03 PM, Andy Chambers wrote:
I have an update that takes longer than expected and wondered if there's an easy way to make it go faster. It's pretty simple:- create table session ( id serial primary key, data text); update session set data = 'ipsum lorem...' where id = 5; The "ipsum lorem.." stuff is an encrypted session variable from a rails app that does tend to get quite large select avg(length(data)) from session => 31275 We're trying to migrate the app from mysql to pg and this is one of the performance bottle-necks. Unfortunately it slows down every request by about 5 seconds. MySQL (both MyISAM and InnoDB) does this almost instantaneously.
is that 5 seconds for ONE of those UPDATEs, or is your webapp making 100s of those updates for every web request?
-- john r pierce N 37, W 122 santa cruz ca mid-left coast -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
