Re: plain inserts and deletes very slow

Perhaps if you are doing a lot of inserts and deletes, vacuuming every 6
minutes would be closer to your mark. Try vacuuming every 15 minutes for
a start and see how that affects things (you will have to do a vacuum
full to get the tables back into shape after them slowing down as they
have).

David

Enrico Weigelt wrote:
> * David Mitchell <david.mitchell@telogis.com> wrote:
>
>>Did you vacuum full?
>>
>>When you do lots of inserts and deletes, dead tuples get left behind.
>>When you vacuum, postgres will reuse those dead tuples, but if you don't
>>vacuum for a long time these tuples will build up lots. Even when you
>>vacuum in this case, the dead tuples are still there, although they are
>>marked for reuse. Vacuuming full actually removes the dead tuples.
>
>
> I'm doing a VACUUM ANALYZE every 6 hours.
>
> vacuum'ing manually doesnt seem to have any effect on that.
>
>
> cu


--
David Mitchell
Software Engineer
Telogis

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