Re: [HACKERS] Logging pg_autovacuum

From: "Larry Rosenman" <ler(at)lerctr(dot)org>
To: "Larry Rosenman" <lrosenman(at)pervasive(dot)com>, "Jim Nasby" <jnasby(at)pervasive(dot)com>
Cc: <pgsql-hackers(at)postgresql(dot)org>, <pgsql-patches(at)postgresql(dot)org>
Subject: Re: [HACKERS] Logging pg_autovacuum
Date: 2006-05-01 21:14:04
Message-ID: 008201c66d64$2d3b5c60$aa0610ac@aus.pervasive.com
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Larry Rosenman wrote:
> Jim C. Nasby wrote:
>> On Mon, May 01, 2006 at 12:28:21PM -0500, Larry Rosenman wrote:
>>> Since both vacuum and autovacuum will be cutting stats records, do
>>> we want to just have the autovacuum
>>> stats record have the fact that it was autovacuum that did the
>>> vacuum?
>>>
>>> Or, is there a way when vacuum is run by autovacuum that I can get a
>>> flag to set that says this (vacuum|analyze) was done by the
>>> autovacuum daemon?
>>>
>>> I agree that the existing stats calls are good, but I'm still
>>> reading code to see whether I can determine
>>> at the time they are cut that this was autovacuum that did it.
>>
>> I think noting autovac vacuums/analyzes seperately is
pg-dev/vacuum-time-patch-WIP.txt'nice-to-have'
>> but not all that important. It'd probably be pretty easy to tell the
>> difference just knowing what (if any) manual vacuums your system
>> runs.
>>
>> While we're looking at logging, are you going to add stats stuff for
>> the bgwriter as well, or should we add this to the TODO?
>
> I was going to do that after I got some comfort with what I'm doing
> here.

I've put a WIP patch up for comments:

http://www.lerctr.org/~ler/pg-dev/vacuum-time-patch-WIP.txt

this is *NOT* for application, as I still need to add access to the new
fields to
the views, etc.

I'm looking to get comments on it.

--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 512-248-2683 E-Mail: ler(at)lerctr(dot)org
US Mail: 430 Valona Loop, Round Rock, TX 78681-3893

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