Re: Query Speed!!!

hi,
my query looks like this:

select * from loom_details where date>='2002-06-01'
and date<='2002-06-30'.

* I do give 'select *' since all the columns are
required for the report.

* When I give the above query in the 'psql' prompt it
waits for 1 second to fetch the records and displays
the entire rows(about 3000).

* There are about 10,000 records total in the table.

* When I run the report, it actually does not increase
the RAM usage but takes about 90% of the CPU time
leaving all the other queries behind it.

Please tell me how can I increase the speed. thanks.

regards,
T.Bhuvaneswari.

--- Chris Albertson <chrisalbertson90278(at)yahoo(dot)com>
wrote:
>
> --- Hans-Juergen Schoenig <hs(at)cybertec(dot)at> wrote:
> > Thirumoorthy Bhuvneswari wrote:
> > > hi,
> > > I am using Postgresql-7.1.3 with RedHat
> Linux-7.1 and
> > > JDBC. I am having an indexed table with nearly
> 3,000
> > > records for a month. My machine is with 256 MB
> RAM,
> > > 600 MHz. I am having a report from the abovesaid
> > > table, which displays 1 month's records at a
> stretch
> > > using Swing components. If I run the query from
> the
> > > hard-disk
> > > it takes about 5 seconds to display all the
> 3,000
> > > records. If I connect 3 nodes to it and run the
> query
> > > from a node, it takes about 1.5 minutes. I don't
> know
> > > where I am wrong. Please do reply. thanks.
>
> Please tell us two more things:
>
> 1) If you enter the query by hand at the psql prompt
> how
> long does the query take?
>
> 2) What is the SQL query? Show us the SQL you
> entered.
>
> I would expect much beter 10x to 100x speeds for
> most "normal"
> queries. But do the above _after_ a "vacuum full
> analyze"
>
> =====
> Chris Albertson
> Home: 310-376-1029
> chrisalbertson90278(at)yahoo(dot)com
> Cell: 310-990-7550
> Office: 310-336-5189
> Christopher(dot)J(dot)Albertson(at)aero(dot)org
>
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