| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: CLOG contention |
| Date: | 2012-01-05 20:10:45 |
| Message-ID: | CA+U5nMJrPrgeaGV-o-jutM53VpUFSySiP-eOWGVrGUWA0B=rcA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jan 5, 2012 at 7:57 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> I think that the reason it's historically been a constant is that the
> original coding took advantage of having a compile-time-constant number
> of buffers --- but since we went over to the common SLRU infrastructure
> for several different logs, there's no longer any benefit whatever to
> using a simple constant.
You astound me, you really do.
Parameterised slru buffer sizes were proposed about for 8.3 and opposed by you.
I guess we all reserve the right to change our minds...
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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