Re: strange slow performance

On Fri, 2006-12-15 at 04:58 -0800, michael.guiard@gmail.com wrote:
> Hi !
> I have a strange slow performance problem depending on client computer.
> I have a postgresql server (8.1.3) running on an XP system (P4 3GHz,
> 1Go RAM).
>
> I have 3 other computers from which I make request on the database : 2
> XP(named 1 & 2) and 1 2K.
>
> >From one XP(1) and from the 2K computer, I have no slow performance
> problem. I ask for a select of 4000 records, the request is processed
> in less than 1 seconde.
> >From the last XP (2) computer, the same request takes more than 10
> seconds. From this computer I have no other network problem, I can
> copy, paste network files without any performance problem.
>
> The 3 clients use odbc driver 8.01.02.00.
>
> I tried to install the postgre sql server on the xp (2) and make the
> same request from 3 other computers : no problem, the process takes
> less than 1 second from all clients
>

Try to isolate the problem more closely. What is the actual slow part?
Is it the ODBC operation? The host lookup? The time to establish a
connection? Is the PostgreSQL server actually executing the query for 10
seconds (check pg_stat_activity to see what it's doing)?

Regards,
    Jeff Davis