On Fri, 27 Jun 2003 11:10:58 +0200, Andre Schubert <[EMAIL PROTECTED]>
wrote:
>Once a month we delete the all data of the oldest month.
>And after that a vacuum full verbose analyze is performed.
>Could this cause reordering of the data ?
I may be wrong, but I think VACUUM FULL starts taking tuple
On Fri, 27 Jun 2003 10:43:01 +0200
Manfred Koizar <[EMAIL PROTECTED]> wrote:
> On Fri, 27 Jun 2003 08:07:35 +0200, Andre Schubert
> <[EMAIL PROTECTED]> wrote:
> >Traffic data are inserted every 5 minutes with the actual datetime
> >of the transaction, thatswhy the table should be physically order
On Fri, 27 Jun 2003 08:07:35 +0200, Andre Schubert
<[EMAIL PROTECTED]> wrote:
>Traffic data are inserted every 5 minutes with the actual datetime
>of the transaction, thatswhy the table should be physically order by time_stamp.
So I'd expect a correlation of nearly 1. Why do your statistics show
On Thu, 26 Jun 2003 12:03:52 -0400
Tom Lane <[EMAIL PROTECTED]> wrote:
> Manfred Koizar <[EMAIL PROTECTED]> writes:
> > On Thu, 26 Jun 2003 10:08:05 -0400, Tom Lane <[EMAIL PROTECTED]>
> > wrote:
> >> Try reducing random_page_cost
>
> > With index scan cost being more than 25 * seq scan cost, I g
On Thu, 26 Jun 2003 12:03:52 -0400
Tom Lane <[EMAIL PROTECTED]> wrote:
> Manfred Koizar <[EMAIL PROTECTED]> writes:
> > On Thu, 26 Jun 2003 10:08:05 -0400, Tom Lane <[EMAIL PROTECTED]>
> > wrote:
> >> Try reducing random_page_cost
>
> > With index scan cost being more than 25 * seq scan cost, I g
Manfred Koizar <[EMAIL PROTECTED]> writes:
> On Thu, 26 Jun 2003 10:08:05 -0400, Tom Lane <[EMAIL PROTECTED]>
> wrote:
>> Try reducing random_page_cost
> With index scan cost being more than 25 * seq scan cost, I guess that
> - all other things held equal - even random_page_cost = 1 wouldn't
> hel
On Thu, 26 Jun 2003 10:08:05 -0400, Tom Lane <[EMAIL PROTECTED]>
wrote:
>Andre Schubert <[EMAIL PROTECTED]> writes:
>> i think i need a little help with a problem with pg_statistic.
>
>Try reducing random_page_cost
With index scan cost being more than 25 * seq scan cost, I guess that
- all other t
Andre Schubert <[EMAIL PROTECTED]> writes:
> i think i need a little help with a problem with pg_statistic.
Try reducing random_page_cost --- although you'd be foolish to set it on
the basis of just a single test query. Experiment with a few different
tables, and keep in mind that repeated tests
Hi,
i think i need a little help with a problem with pg_statistic.
Lets say i have a table to collect traffic-data.
The table has a column time_stamp of type timesamptz.
The table has a single-column index on time_stamp.
The table has around 5 million records.
If i delete all statistical data fro
