Re: Postgresql takes more time to update

On 10/4/07, Suresh Gupta VG <suresh(dot)g(at)zensar(dot)com> wrote:
>
> Hi Team,
>
>
>
> We are using "psql 7.4.2" version of Postgresql, these days all the
> transactions on the database are taking long time to execute. We are
> planning to do "ANALYZE" command on the database. Could you please advice
> us, how much time it takes and what are the conditions we need to keep on an
> eye.
>

FIrst thing, you need to schedule an update to 7.4.18 or whatever the latest
7.4 patch release is. 7.4.2 is so far back that I'm 100% certain there are
data eating bugs in it, and you will likely get bitten if you stay on it.
Note that there is no need for dump / restore, unless something goes
horribly wrong. Always make a backup just in case though.

Next in answer to how long an analyze will take, the answer is some time.
That's as accurate as I can be given how little I know of your database.
How much space on disk is it using? How fast is your drive subsystem. A
similar question would be how long does it take to paint a bridge.
Apparently, on the Golden Gate bridge, they start on one end, and when they
get to the other, the go back and start again.

> Can you please tell us whether we had any other commands are available on
> postgresql to increase the performance of the database and database tools
> available for Postgresql on Solaris sparc machine?
>

Hard to say. The two most important things I can think of for speeding you
up right off the bat are to upgrade both your OS (to BSD or Linux on the
same hardware) and to upgrade PostgreSQL.

Barring that, we're looking at performance tuning. I'd suggest taking a
walk over to the pgsql-perform list and telling folks all about your
hardware (CPU / Disk arrays / Memory) and what you're doing with your box:
types of queries, examples that are slow, how often you run analyze, how
often you vacuum, how large your current db is, what does vacuum verbose
tell you, those kinds of things.

with thanks and regards,
>
> *G.V. Suresh Gupta*
>
> Sr. Software Engineer
>
> Batelco Phase II
>
> Mo: +91 9890898688
>
> Ph : +9120 66453213
>
>
>
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