| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [RFC, POC] Don't require a NBuffer sized PrivateRefCount array of local buffer pins |
| Date: | 2014-04-09 09:34:42 |
| Message-ID: | CA+U5nMK1SoSbWm_i024KMLn+AX_mNm7Z4+bp-93rjp0m9gk0dw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 21 March 2014 14:22, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> That seems to work fairly well. On the few tests I could run on my
> laptop - I've done this during a flight - it's a small performance win
> in all cases I could test. While saving a fair amount of memory.
We've got to the stage now that saving this much memory is essential,
so this patch is a must-have.
The patch does all I would expect and no more, so approach and details
look good to me.
Performance? Discussed many years ago, but I suspect the micro-tuning
of those earlier patches wasn't as good as it is here.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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