Checking out right now....
Thanks for the fast response.
-----Original Message-----
From: Andreas Kostyrka [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 22, 2007 11:49 AM
To: Orhan Aglagul
Cc: <pgsql-performance@postgresql.org>
Subject: AW: [PERFORM] Drop table vs Delete record
Consider table partitioning (it's described in the manual).
Andreas
-- Ursprüngl. Mitteil. --
Betreff: [PERFORM] Drop table vs Delete record
Von: "Orhan Aglagul" <[EMAIL PROTECTED]>
Datum: 22.05.2007 18:42
My application has two threads, one inserts thousands of records per second
into a table (t1) and the other thread periodically deletes expired records
(also in thousands) from the same table (expired ones). So, we have one thread
adding a row while the other thread is trying to delete a row. In a short time
the overall performance of any sql statements on that instance degrades. (ex.
Select count(*) from t1 takes more then few seconds with less than 10K rows).
My question is: Would any sql statement perform better if I would rename the
table to t1_%indx periodically, create a new table t1 (for new inserts) and
just drop the tables with expired records rather then doing a delete record?
(t1 is a simple table with many rows and no constraints).
(I know I could run vacuum analyze)
Thanks,
Orhan A.
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