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Re: PATCH: regular logging of checkpoint progress

From: Magnus Hagander <magnus(at)hagander(dot)net>
To: Tomas Vondra <tv(at)fuzzy(dot)cz>
Cc: pgsql-hackers(at)postgresql(dot)org, Peter Eisentraut <peter_e(at)gmx(dot)net>
Subject: Re: PATCH: regular logging of checkpoint progress
Date: 2011-09-02 15:08:45
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Lists: pgsql-hackers
On Sep 2, 2011 5:02 PM, "Tomas Vondra" <tv(at)fuzzy(dot)cz> wrote:
> On 2 Září 2011, 15:44, Peter Eisentraut wrote:
> > On fre, 2011-09-02 at 11:01 +0200, Tomas Vondra wrote:
> >> What about logging it with a lower level, e.g. NOTICE instead of the
> >> current LOG? If that's not a solution then a new GUC is needed I
> >> guess.
> >
> > Changing the log level is not the appropriate solution.  Make it a
> > configuration parameter.
> Why is it inappropriate solution? There's a log_checkpoints GUC that
> drives it and you can either get basic info (summary of the checkpoint) or
> detailed log (with a lower log level).
> In the first patch I've proposed a new GUC (used to set how often the info
> should be logged or disable it), but Josh Berkus pointed out that I should
> get rid of it if I can. Which is what I've done in the following patches.

Well, josh doesn't speak for everybody ;-)

Maybe one way could be to change log_checkpoints into an enum of "off, on,
debug "(values open for bikeshedding of course)


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