8.4 auto vacuum

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Tomorrow I will be migrating from PostgreSQL 8.2 to 8.4.

In PostgreSQL 8.2 in order for vacuum to work I had to bump up
max_fsm_pages to 1924288.

1) In PostgreSQL 8.4 do I need to make any changes to the default
settings for auto vacuum in order for it to run properly? I noticed it
does not have a setting for max_fsm_pages.

2) If auto vacuum has issues in 8.4 will PostgreSQL tell me what
settings to tweak like it did in 8.2?

Thanks,

Lance Campbell
Project Manager/Software Architect/DBA
Web Services at Public Affairs
217-333-0382


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<TITLE>8.4 auto vacuum</TITLE>
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<P><FONT SIZE=3D2 FACE=3D"Arial">Tomorrow I will be migrating from =
PostgreSQL 8.2 to 8.4.  </FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">In PostgreSQL 8.2 in order for vacuum =
to work I had to bump up max_fsm_pages to 1924288.  </FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">1) In PostgreSQL 8.4 do I need to make =
any changes to the default settings for auto vacuum in order for it to =
run properly?  I noticed it does not have a setting for =
max_fsm_pages.</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">2) If auto vacuum has issues in 8.4 =
will PostgreSQL tell me what settings to tweak like it did in =
8.2?</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Thanks,</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Lance Campbell</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Project Manager/Software =
Architect/DBA</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Web Services at Public Affairs</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">217-333-0382</FONT>
</P>

</BODY>
</HTML>
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Lance [ Di, 10 November 2009 16:22 ] [ ID #2022345 ]

Re: 8.4 auto vacuum

On Tue, Nov 10, 2009 at 8:22 AM, Campbell, Lance <lance [at] illinois.edu> wrote:
> Tomorrow I will be migrating from PostgreSQL 8.2 to 8.4.
>
> In PostgreSQL 8.2 in order for vacuum to work I had to bump up max_fsm_pa=
ges
> to 1924288.
>
> 1) In PostgreSQL 8.4 do I need to make any changes to the default settings
> for auto vacuum in order for it to run properly?=A0 I noticed it does not=
have
> a setting for max_fsm_pages.
>
> 2) If auto vacuum has issues in 8.4 will PostgreSQL tell me what settings=
to
> tweak like it did in 8.2?

The basic gist is that in 8.4 the free space map is dynamic and needs
no tweaking. I haven't exercised 8.4 in a busy production environment
so I can't say it definitely works, but so far I've seen no reports of
it NOT working...

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Scott Marlowe [ Di, 10 November 2009 17:53 ] [ ID #2022346 ]
Datenbanken » gmane.comp.db.postgresql.admin » 8.4 auto vacuum

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