Re: Cannot Achieve Performance

On 10 December 2010 12:28, Adarsh Sharma <adarsh(dot)sharma(at)orkash(dot)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