On 25 September 2015 at 08:29, Feng Tian <ft...@vitessedata.com> wrote:

> Compared to numeric type, decimal64 arithmetics is about 2x faster,
> decimal128 is about 1.5x faster.  However, the cast between decimal and
> float4/8 is implemented rather naively and slow.   As always, it depends on
> workload, decimal may take more, or less space, may be slower if cast is
> frequently performed.
>

Are you able to share the processor vendor, and perhaps some other specs of
the machine you obtained these results from?

Regards

David Rowley

--
 David Rowley                   http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/>
 PostgreSQL Development, 24x7 Support, Training & Services

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