Re: Partitioning

Yeah definitely not staying resident once read, although the machine does
gave 256GB of memory so some will persist in the OS cache.

Actually this brings up another question, if I have an unique integer index
of 2.gb what percentage would I expect to read for a value that was higher
or lower than all index values?

Cheers,
James

On Monday, 19 January 2015, John R Pierce <pierce(at)hogranch(dot)com> wrote:

> On 1/18/2015 11:13 PM, James Sewell wrote:
>
>>
>> Each index is about 2.5GB, I suspect I am trying to read a these into
>> memory in entirety.
>>
>
> an 11GB table with a (presumably integer) primary key requires an 2.5GB
> index ? 100 of these would need 250GB of shared_buffers to stay
> resident, not likely.
>
>
>
>
>
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James Sewell,
PostgreSQL Team Lead / Solutions Architect
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