Re: [PATCHES] Template0 age is increasing speedily.

I would expect that the age of Template0 is increasing at the same rate as
every other database in your cluster. Transaction IDs are global across all
databases in the cluster, so as I understand it, executing a transaction in
any database will increase the age of all databases by 1.

-----Original Message-----
From: pgsql-performance-owner(at)postgresql(dot)org
[mailto:pgsql-performance-owner(at)postgresql(dot)org] On Behalf Of Nimesh Satam
Sent: Thursday, September 07, 2006 5:49 AM
To: Chris Mair
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] [PATCHES] Template0 age is increasing speedily.

Hi,

Postgres Version used is 8.1.3
OS: Linux


'SELECT datname, age(datfrozenxid) FROM pg_database'

postgres | 1575
xyz | 1073743934
template1 | 1632
template0 | 61540256

This is the command which I tried and got the above output, and the number
is increasing pretty fast for template0.

Please let me know if this a problem.



Regards,
Nimesh.

On 9/7/06, Chris Mair <chrisnospam(at)1006(dot)org> wrote:

On Thu, 2006-09-07 at 16:01 +0530, Nimesh Satam wrote:

> I noticed that the age of template0 is increasing very rapidly..Can
> you please let me know how we can control this ....and what causes
> such problems.
>
> We also noticed that the database slow downs heavily at a particular
> time..Can you suggest any tools which will help in diagnosing the root
> cause behiond the data load.

Hi,

first of all: there is no need to cross post on 4 lists.
If you have a performance problem, post on pgsql-performance.

Second, please tell us which version of PostgreSQL on
which operating system you're using. Diagnosing your
problem might depend on which OS you use...

Finally, explain what you mean by "the age of template0 is
increasing very rapidly", you mean "the size is increasing"?

Bye,
Chris.

--

Chris Mair
http://www.1006.org