Re: reducing the overhead of frequent table locks - now, with WIP patch

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Robert Haas <robertmhaas@gmail.com>, Joshua Berkus <josh@agliodbs.com>, Alvaro Herrera <alvherre@commandprompt.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, "Joshua D. Drake" <jd@commandprompt.com>
Date: 2011-06-07T20:11:46Z
Lists: pgsql-hackers
On Tue, Jun 7, 2011 at 9:00 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Simon Riggs <simon@2ndQuadrant.com> writes:
>> Moving on from that, I have proposed other solutions. Koichi, Jignesh
>> and and then Robert have shown measurements of the huge contention in
>> this area of our software. Robert's patch addresses the problems, as
>> do Koichi's and my latest patch.  I would like to see us do
>> *something* about these problems for 9.1. Not all of them are risky or
>> time consuming.
>
> In the first place, all of these issues predate 9.1 by years.  They are
> not regressions or new bugs, and they have not suddenly gotten more
> urgent.  In the second place, I haven't seen any proposals in the area
> that appear low risk.  I seriously doubt that I would consider *any*
> meaningful change in the locking area to be low risk.

That's a shame. We'll fix it in 9.2 then.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
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