Re: Using quicksort for every external sort run

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От Peter Geoghegan
Тема Re: Using quicksort for every external sort run
Дата
Msg-id CAM3SWZQ=bD_y+xCnbe=AhKgKf6gJf-FKxSEQZb9YyHBEgiDKsg@mail.gmail.com
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Ответ на Re: Using quicksort for every external sort run  (Feng Tian <ftian@vitessedata.com>)
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On Thu, Aug 20, 2015 at 1:28 PM, Feng Tian <ftian@vitessedata.com> wrote:
> Agree everything in principal,except one thing -- no, random IO on HDD in
> 2010s (relative to CPU/Memory/SSD), is not any faster than tape in 1970s.
> :-)

Sure. The advantage of replacement selection could be a deciding
factor in unrepresentative cases, as I mentioned, but even then it's
not going to be a dramatic difference as it would have been in the
past.

By the way, please don't top-post.

-- 
Peter Geoghegan



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