Skip site navigation (1) Skip section navigation (2)

Re: postgres performance tunning

From: Greg Smith <greg(at)2ndquadrant(dot)com>
To: selvi88 <selvi(dot)dct(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: postgres performance tunning
Date: 2010-12-17 13:20:19
Message-ID: 4D0B6393.8010400@2ndquadrant.com (view raw or flat)
Thread:
Lists: pgsql-performance
selvi88 wrote:
>         I have a requirement for running more that 15000 queries per second.
> Can you please tell what all are the postgres parameters needs to be changed
> to achieve this. 
>         Already I have 17GB RAM and dual core processor and this machine is
> dedicated for database operation. 
>   

You can find a parameter tuning guide at 
http://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server that may 
help you out.

You are unlikely to hit 15K queries/second with a dual core processor.  
When I run really trivial queries using the pgbench program to simulate 
database activity, that normally gives about 7K queries/second/core.  My 
dual-core laptop will do 13K/second for example.  And real-world queries 
tend to be a bit more intensive than that.  I would normally expect that 
a quad-core system would be needed to reach 15K even with trivial 
queries; my quad-core server at home will do 28K queries/second running 
pgbench.  If your individual cores are really fast, you might just make it.

-- 
Greg Smith   2ndQuadrant US    greg(at)2ndQuadrant(dot)com   Baltimore, MD
PostgreSQL Training, Services and Support        www.2ndQuadrant.us
"PostgreSQL 9.0 High Performance": http://www.2ndQuadrant.com/books


In response to

Responses

pgsql-performance by date

Next:From: Nick MathesonDate: 2010-12-17 13:51:27
Subject: Re: Help with bulk read performance
Previous:From: selvi88Date: 2010-12-17 10:48:42
Subject: Re: postgres performance tunning

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group