Performance degrades until dump/restore - Mailing list pgsql-general

From Chris
Subject Performance degrades until dump/restore
Date
Msg-id CAMv1wqf0q=pYN6H5LD+6AY44BzY5iczuGJ7SKCaN2hyHbUQsBQ@mail.gmail.com
Whole thread Raw
Responses Re: Performance degrades until dump/restore  (Chris Travers <chris.travers@gmail.com>)
Re: Performance degrades until dump/restore  (Willy-Bas Loos <willybas@gmail.com>)
Re: Performance degrades until dump/restore  (Andy Colson <andy@squeakycode.net>)
Re: Performance degrades until dump/restore  (Scott Marlowe <scott.marlowe@gmail.com>)
List pgsql-general
Hello,
I'm using PG 9.1.  Data is streaming into one particularly large table (at 11 million rows currently) on a constant basis.  It is pretty much all inserts, very little updates or deletes (if any).
After a week or so, query performance on this table turns abysmal.  If I dump the db, then restore, performance turns great for a while before it starts to bog down again in the following days.
 
So far, the only answers I can find by searching is to turn autovacuum on.  But it should already by on by default. The only setting that I have modified was to increase shared buffer.
 
I'm not really sure where to go from here. Anybody have any suggestions on what the problem(s) might be and how to rectify it?
 
Thanks!
 

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