> [] On Behalf Of Magnus Hagander
        Okay and I think partially it might be because we don't have
> writeback
>       optimization (done in 9.6) for Windows.  However, still the broader
>       question stands that whether above data is sufficient to say that
> we
>       can recommend the settings of shared_buffers on Windows similar
> to
>       Linux?
> Based on this optimization we might want to keep the text that says large
> shared buffers on Windows aren't as effective perhaps, and just remove the
> sentence that explicitly says don't go over 512MB?

Just removing the reference to the size would make users ask a question "What 
size is the effective upper limit?"

Takayuki Tsunakawa

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