Re: Speed up Clog Access by increasing CLOG buffers

On Tue, Mar 22, 2016 at 6:29 PM, Andres Freund <andres@anarazel.de> wrote:
>
> On 2016-03-22 18:19:48 +0530, Amit Kapila wrote:
> > > I'm actually rather unconvinced that it's all that common that all
> > > subtransactions are on one page. If you have concurrency - otherwise
> > > there'd be not much point in this patch - they'll usually be heavily
> > > interleaved, no?  You can argue that you don't care about subxacts,
> > > because they're more often used in less concurrent scenarios, but if
> > > that's the argument, it should actually be made.
> > >
> >
> > Note, that we are doing it only when a transaction has less than equal to
> > 64 sub transactions.
>
> So?