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From: Darcy Buskermolen <[email protected]>
To: [email protected]
Cc: Alvaro Herrera <[email protected]>
Cc: Simon Riggs <[email protected]>
Subject: Re: log_autovacuum
Date: Thu, 8 Mar 2007 10:03:23 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>

On March 8, 2007 09:53 am, Alvaro Herrera wrote:
> Simon Riggs wrote:
> > log_autovacuum = on produces a single line of output from autovacuum,
> > with additional useful stats. Patch is proving useful in performance
> > testing. Not sure what is intended on logging for 8.3....
> >
> > LOG:  autovac "public.w" scans:1 pages:197(-0) tuples:2338(-7199) CPU
> > 0.00s/0.00u sec elapsed 0.39 sec
> > LOG:  autovac "public.s" scans:1 pages:1926746(-0)
> > tuples:37000611(-3461867) CPU 99.74s/53.37u sec elapsed 7977.20 sec
>
> I agree something like this is useful, but I'd try to get rid of cryptic
> notation, and maybe split in several message categories if reasonable.
>
> Your proposal is
>
> LOG:  autovac "public.w" scans:1 pages:197(-0) tuples:2338(-7199) CPU
> 0.00s/0.00u sec elapsed 0.39 sec
>
> This looks too much like the old VACUUM VERBOSE reporting, which was
> awful.  Maybe something like this is better:
>
> LOG: index passes: 1  pages: removed 0, 197 remain  tuples: removed 7199,
> 2338 remain  CPU usage: whatever CONTEXT: Automatic vacuuming of table
> "database.public.w"
>
> This looks like the sort of thing comparable to picking a bikeshed color
> though :-(
>
> Keep in mind that it's going to be translated, so it's not useful for
> machine parsing anyway.

This goes back to the request for vacuum loging to a table.. 

-- 
Darcy Buskermolen
Command Prompt, Inc.
Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240
PostgreSQL solutions since 1997
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