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

On Tue, Jun 7, 2011 at 9:00 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)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/
 PostgreSQL Development, 24x7 Support, Training & Services