| From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: best db schema for time series data? |
| Date: | 2010-11-16 11:11:43 |
| Message-ID: | AANLkTi=B9LMUMWMUm-nH=RbrahYb8ZKkQFJ8b4y-3wgU@mail.gmail.com |
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| Lists: | pgsql-performance |
2010/11/16 Louis-David Mitterrand <vindex+lists-pgsql-performance(at)apartia(dot)org>:
> On Tue, Nov 16, 2010 at 12:03:29PM +0100, Pavel Stehule wrote:
>> Hello
>>
>> my opinion:
>>
>> @1 can be faster for access to last items with index
>> @2 can be more effective about data files length allocation
>
> Hi Pavel,
>
> What is "data files length allocation" ?
size of data files on disc :)
pg needs a some bytes for head on every row - so if you use a array,
then you share its. Next varlena types (like array) can be compressed.
Pavel
>
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