Re: [HACKERS] Bgwriter behavior

From: Simon Riggs <simon(at)2ndquadrant(dot)com>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, pgsql-patches(at)postgresql(dot)org
Subject: Re: [HACKERS] Bgwriter behavior
Date: 2005-01-04 00:06:50
Message-ID: 1104797210.15879.18.camel@localhost.localdomain
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On Mon, 2005-01-03 at 23:03, Bruce Momjian wrote:
> Simon Riggs wrote:
> > On Mon, 2005-01-03 at 20:09, Bruce Momjian wrote:
> > > OK, we have a submitted patch that attempts to improve bgwriter by
> > > making bgwriter_percent control what percentage of the buffer is
> > > scanned.
> > >
> > > The patch still needs doc changes and a change to the default value but
> > > at this point we need a vote on the patch. Is it:
> > >
> > > * too late for 8.0
> > > * not the right improvement
> > > * to be applied with doc/default additions
> > >
> > > Comments?
> > >
> > > ---------------------------------------------------------------------------
> > >
> > > Simon Riggs wrote:
> > > > On Sat, 2005-01-01 at 17:47, Simon Riggs wrote:
> > > > > On Sat, 2005-01-01 at 17:01, Bruce Momjian wrote:
> > > > > > Simon Riggs wrote:
> > > > > >
> > > > > > > Well, I think we're saying: its not in 8.0 now, and we take our time to
> > > > > > > consider patches for 8.1 and accept the situation that the parameter
> > > > > > > names/meaning will change in next release.
> > > > > >
> >
> > I hear veto ... so the above situation stands then: 8.1 it is.
> >
> > Not unhappy...I want this thing released as much as the next man...
>
> Well, we went through the process and that's the best we can do.

Here's my bgwriter instrumentation patch, which gives info that could
allow the bgwriter settings to be tuned.

--
Best Regards, Simon Riggs

Attachment Content-Type Size
bg_instrument.patch text/x-patch 7.1 KB

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