Thread: Reg: Slow query
Hi all, Currently, I'm working on a performance issue with a query which takes around ~30 sec to complete. This happens only, when there are more activity going around same table. The same query completes with in a second when there are no activity on that table. Tried taking EXPLAIN ANALYZE output and analyze it, since it completes with in a second, there are no blockers in it. Is there any way to see whether postgress settings creates the problem? which could be related to memory, locks or I/O etc.. Thanks for your help. --Prakash
Hello,
This definitively doesn't look like something that has to do with postgres settings, can you show us the statement and the explain plan ?
Also , have you checked pg_stat_activity to monitor what is running at the same time when the delay occurs ?
It kinda looks like a lock to me.
Vasilis Ventirozos
This definitively doesn't look like something that has to do with postgres settings, can you show us the statement and the explain plan ?
Also , have you checked pg_stat_activity to monitor what is running at the same time when the delay occurs ?
It kinda looks like a lock to me.
Vasilis Ventirozos
On Wed, Mar 27, 2013 at 4:04 PM, Prakash Chinnakannan <prakash.chinnakannan@gmail.com> wrote:
Hi all,
Currently, I'm working on a performance issue with a query which takes
around ~30 sec to complete. This happens only, when there are more
activity going around same table. The same query completes with in a
second when there are no activity on that table.
Tried taking EXPLAIN ANALYZE output and analyze it, since it completes
with in a second, there are no blockers in it.
Is there any way to see whether postgress settings creates the
problem? which could be related to memory, locks or I/O etc..
Thanks for your help.
--Prakash
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance