Re: Cannot Achieve Performance - Mailing list pgsql-general

From Szymon Guz
Subject Re: Cannot Achieve Performance
Date
Msg-id AANLkTinapjUcEKmE7uynCFs6zbNZxchtvxbRW1t8D9Zr@mail.gmail.com
Whole thread Raw
In response to Cannot Achieve Performance  (Adarsh Sharma <adarsh.sharma@orkash.com>)
List pgsql-general


On 10 December 2010 12:28, Adarsh Sharma <adarsh.sharma@orkash.com> wrote:
Dear all,

Performance tuning is what, which all i sured to achieve in pgsql. I am currently testing on 5 GB table with select operation that takes about 229477 ms ( 3.82 minutes  ) with simple configuration.

I have 4 GB RAM. So I change some parameters such as  shared_buffers to  512 MB , effective cache  size to 1024 MB and my separate log directory.

Would this is sufficient or I need something else to be changed.

But my output after changing these parameters is not what I am expecting of , it is 229971 ms ( 3.81 minutes ). Please help.

Waiting for some pointers until I am googling.

Thanks & Regards

Adarsh Sharma




show us explain and explain analyze of this query, maybe the problem is not in the memory settings

regards
Szymon 

pgsql-general by date:

Previous
From: Adarsh Sharma
Date:
Subject: Cannot Achieve Performance
Next
From: Thomas Kellerer
Date:
Subject: Re: A cronjob for copying a table from Oracle