Re: Extended Prefetching using Asynchronous IO - proposal and patch

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От Claudio Freire
Тема Re: Extended Prefetching using Asynchronous IO - proposal and patch
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Msg-id CAGTBQpZnSgxr2_RufpaSeQGWjVgjmTuaxTdooqxSicUNntS0dw@mail.gmail.com
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Ответ на Re: Extended Prefetching using Asynchronous IO - proposal and patch  (Peter Geoghegan <pg@heroku.com>)
Ответы Re: Extended Prefetching using Asynchronous IO - proposal and patch
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On Wed, May 28, 2014 at 6:51 PM, Peter Geoghegan <pg@heroku.com> wrote:
> Have you thought about things like specialized prefetching for nested
> loop joins?

Currently, such a thing would need some non-trivial changes to the
execution nodes, I believe.

For nestloop, correct me if I'm wrong, but index scan nodes don't have
visibility of the next tuple to be searched for.

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