Re: Update on high concurrency OLTP application and Postgres 8 tuning

On Wed, Sep 20, 2006 at 11:09:23AM +0200, Cosimo Streppone wrote:
>
> I scheduled a cron job every hour or so that runs an analyze on the
> 4/5 most intensive relations and sleeps 30 seconds between every
> analyze.
>
> This has optimized db response times when many clients run together.
> I wanted to report this, maybe it can be helpful for others
> out there... :-)

This suggests to me that your statistics need a lot of updating. You
_might_ find that setting the statistics to a higher number on some
columns of some of your tables will allow you to analyse less
frequently. That's a good thing just because ANALYSE will impose an
I/O load.

A

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