Re: very slow after a while...

Costin Manda wrote:
> On Wed, 06 Apr 2005 14:07:36 +0100
> Richard Huxton <dev@archonet.com> wrote:
>
>
>>Costin Manda wrote:
>>
>>>  I think I found the problem. I was comparing wrongly some values and
>>>based on that, every time the script was run (that means once every 5
>>>minutes) my script deleted two tables and populated them with about 70
>>>thousand records.
>
>
>>I'm not sure I understand what you're saying, but if you vacuum at the
>>wrong time that can cause problems. I've shot myself in the foot before
>>now doing something like:
>>
>>DELETE FROM big_table
>>VACUUM ANALYSE big_table
>>COPY lots of rows into big_table
>>
>>Of course, the planner now thinks there are zero rows in big_table.
>
>
>   I mean from 5 to 5 minutes
> DROP TABLE
> CREATE TABLE
> INSERT 70000 rows in table

I thought you were trying an inserting / updating if it failed? You
shouldn't have any duplicates if the table was already empty. Or have I
misunderstood?

--
   Richard Huxton
   Archonet Ltd