| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Feng Tian <ftian(at)vitessedata(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Decimal64 and Decimal128 |
| Date: | 2015-09-24 21:50:56 |
| Message-ID: | CAKJS1f_QuqK4bA5onggdF8iEE+Qw4P40eTWH+r9Jg2mgt8DMZA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 25 September 2015 at 08:29, Feng Tian <ftian(at)vitessedata(dot)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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