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Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore - Mailing list pgsql-hackers

From Peter Geoghegan
Subject Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore
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Msg-id CAM3SWZSD4mUDc4HQLJ2bNTOkYs0Q+UP-RY9D439VGLCMbVOqzw@mail.gmail.com
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In response to Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore  (Peter Geoghegan <pg@heroku.com>)
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On Mon, Nov 30, 2015 at 1:04 PM, Peter Geoghegan <pg@heroku.com> wrote:
> For example, the 50 million tuple test has over 8% of its runtime
> shaved off. This seems to be a consistent pattern.

I included the nitty-gritty details of this case in something attached
to a mail I just sent, over in the "Quicksort for every external sort
run" thread, FWIW.

-- 
Peter Geoghegan

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