Message

wrote:=20 On Thu, 2006-09-07 at 16:01 +0530, Nimesh Satam wrote: > I noticed that the age of template0 is increasing very rapidly..Can=20 > 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=20 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"?=20 Bye, Chris. -- Chris Mair http://www.1006.org ------=_NextPart_000_0127_01C6D252.EC55E040 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

I=20 would expect that the age of Template0 is increasing at the same rate as = every=20 other database in your cluster. Transaction IDs are global across = all=20 databases in the cluster, so as I understand it, executing a transaction = in any=20 database will increase the age of all databases by = 1.

-----Original Message-----
From:=20 pgsql-performance-owner@postgresql.org=20 [mailto:pgsql-performance-owner@postgresql.org] On Behalf Of = Nimesh=20 Satam
Sent: Thursday, September 07, 2006 5:49 = AM
To: Chris=20 Mair
Cc: pgsql-performance@postgresql.org
Subject: = Re:=20 [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      =20 |      =20 = 1575
xyz          &n= bsp;   =20 | 1073743934
template1     =20 |      =20 1632
template0      |  =20 61540256

This is the command which I tried and got the above output, and = the=20 number is increasing pretty fast for template0.

Please let me know if this a problem.

Regards,

Nimesh.

On 9/7/06, Chris=20 Mair <chrisnospam@1006.org> = wrote:=20

On=20 Thu, 2006-09-07 at 16:01 +0530, Nimesh Satam wrote:

> I = noticed=20 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=20 database slow downs heavily at a particular
> time..Can you = suggest=20 any tools which will help in diagnosing the root
> cause = behiond the=20 data load.

Hi,

first of all: there is no need to = cross=20 post on 4 lists.
If you have a performance problem, post on=20 pgsql-performance.

Second, please tell us which version of = PostgreSQL=20 on
which operating system you're using. Diagnosing = your
problem might=20 depend on which OS you use...

Finally, explain what you mean = by "the=20 age of template0 is
increasing very rapidly", you mean "the size = is=20 increasing"?

Bye,
Chris.

--

Chris=20 Mair
http://www.1006.org

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