Re: Partitioning - Mailing list pgsql-general
Yeah definitely not staying resident once read, although the machine does gave 256GB of memory so some will persist in the OS cache.
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James Sewell,
PostgreSQL Team Lead / Solutions Architect
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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@hogranch.com> wrote:
On Monday, 19 January 2015, John R Pierce <pierce@hogranch.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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john r pierce 37N 122W
somewhere on the middle of the left coast
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James Sewell,
PostgreSQL Team Lead / Solutions Architect
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