On 4 February 2017 at 09:33, Andres Freund <and...@anarazel.de> wrote:

> For pretty much else that logic seems worse,
> because it essentially prevents any buffers ever staying in s_b when
> only ringbuffer accesses are performed.

That was exactly its intent. The ringbuffer was designed to avoid
cache spoiling by large scans.

Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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