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Re: [HACKERS] Poor memory context performance in large hash joins - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: [HACKERS] Poor memory context performance in large hash joins
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Msg-id CAEepm=24pdL0eVZmjZtBCLeHugHBisADht2TjaEdCB_aFv16ZQ@mail.gmail.com
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In response to Re: [HACKERS] Poor memory context performance in large hash joins  (Andres Freund <andres@anarazel.de>)
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On Fri, Feb 24, 2017 at 12:17 PM, Andres Freund <andres@anarazel.de> wrote:
> Jeff, do you have a handy demonstrator?

If you want to hit ExecHashIncreaseNumBatches a bunch of times, see
the "ugly" example in the attached.

-- 
Thomas Munro
http://www.enterprisedb.com

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