--On 23. Oktober 2015 00:03:30 +0200 Andres Freund <and...@anarazel.de>
wrote:

> 
> Note that FPIs are often pretty good for replay performance, avoiding
> lots of synchronous random reads.

That's a very import argument, i think. The difference can be significant,
even if you have a decent storage, rendering a replica unusable. We had
examples in the past where only optimizing aggressive writes of FPIs lead
to an acceptable lag of the replica.

-- 
Thanks

        Bernd


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