On 2014-01-09 16:27:23 -0500, Robert Haas wrote:
> People *think* they don't like that, because that's the way it works
> right now.  If it worked some other way, there's a good chance people
> would be complaining about that behavior, too.

I think on of the primary reason why it's causing huge slowdowns is that
the ring buffer of scan strategies causes dirty buffer writes pretty
much immediately, when a buffer is reused.

Not that delaying the writeout would work all that effectively right
now, with the current bgwriter...


Andres Freund

 Andres Freund                     http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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