Re: PATCH: logical_work_mem and logical streaming of largein-progress transactions

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От Alvaro Herrera
Тема Re: PATCH: logical_work_mem and logical streaming of largein-progress transactions
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Msg-id 20190926193620.GA16836@alvherre.pgsql
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Ответ на Re: PATCH: logical_work_mem and logical streaming of largein-progress transactions  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Ответы Re: PATCH: logical_work_mem and logical streaming of largein-progress transactions  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
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On 2019-Sep-26, Alvaro Herrera wrote:

> How certain are you about the approach to measure memory used by a
> reorderbuffer transaction ... does it not cause a measurable performance
> drop?  I wonder if it would make more sense to use a separate contexts
> per transaction and use context-level accounting (per the patch Jeff
> Davis posted elsewhere for hash joins ... though I see now that that
> only works fot aset.c, not other memcxt implementations), or something
> like that.

Oh, I just noticed that that patch was posted separately in its own
thread, and that that improved version does include support for other
memory context implementations.  Excellent.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



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