| From: | Peter Geoghegan <pg(at)heroku(dot)com> |
|---|---|
| To: | Josh Berkus <josh(at)agliodbs(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, Magnus Hagander <magnus(at)hagander(dot)net>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers |
| Date: | 2014-05-08 00:25:23 |
| Message-ID: | CAM3SWZQ=z51O8VBUP9-=YgqtWmm3NQTGYTsPV=mRi+toT+fbSw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, May 7, 2014 at 12:06 PM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
> For that matter, our advice on shared_buffers ... and our design for it
> ... is going to need to change radically soon, since Linux is getting an
> ARC with a frequency cache as well as a recency cache, and FreeBSD and
> OpenSolaris already have them.
I knew about ZFS, but Linux is implementing ARC? There are good
reasons to avoid ARC. CAR seems like a more plausible candidate, since
it apparently acknowledges ARC's shortcomings and fixes them.
--
Peter Geoghegan
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