Re: patch: improve SLRU replacement algorithm

Excerpts from Greg Stark's message of mié abr 04 14:11:29 -0300 2012:
> On Wed, Apr 4, 2012 at 1:00 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> > , everybody's next few CLOG requests hit some other
> > buffer but eventually the long-I/O-in-progress buffer again becomes
> > least recently used and the next CLOG eviction causes a second backend
> > to begin waiting for that buffer.
>
> This still sounds like evidence that the slru is just too small for
> this transaction rate.

What this statement means to me is that the number of slru buffers
should be configurable, not compile-time fixed.

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