On 10/14/2010 05:18 AM, Brandon Casci wrote:
Hello
I have an application hosted on Heroku. They use postgres. It's more or
less abstracted away, but I can get some performance data from New
Relic. For the most part, performance is ok, but now and then some
queries take a few seconds, and spike up to 15 or even 16 seconds! Ouch!
This is the most detailed information I could get form New Relic. Do you
have any suggestions how I could improve the performance?
That query plan is nearly illegible, and it contains no information
about how the query actually executed or how many rows were fetched from
various tables. I can't personally see any way to give you useful advice
based on that information.
I know you're going through a third party, but do think you could get
them to post the original form, unmangled by mail clients and whatever
else they've done to it, here? :
http://explain.depesz.com
Get them to use EXPLAIN ANALYZE rather than plain EXPLAIN, and to
provide the text of the query that generated the plan.
--
Craig Ringer
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