From: Rod Taylor <rbt@rbt.ca>
To: Sean Chittenden <sean@chittenden.org>
Cc: Vivek Khera <khera@kcilink.com>
Cc: Postgresql Performance <pgsql-performance@postgresql.org>
Subject: Re: go for a script! / ex: PostgreSQL vs. MySQL
Date: Fri, 10 Oct 2003 21:55:34 -0400
Message-ID: <1065837333.12875.1.camel@jester> (raw)
In-Reply-To: <20031010225924.GC8664@perrin.nxad.com>
References: <007901c38f2b$0b585590$2802a8c0@webbased10>
<200310101034.52073.josh@agliodbs.com>
<3F86F5BB.90605@chuckie.co.uk>
<x7wubcon3h.fsf@yertle.int.kciLink.com>
<20031010225924.GC8664@perrin.nxad.com>
On Fri, 2003-10-10 at 18:59, Sean Chittenden wrote:
> > NB> So far:
> >
> > NB> shared_buffers = 1/16th of total memory
> > NB> effective_cache_size = 80% of the supposed kernel cache.
> >
> > Please take into account the blocksize compiled into PG, too...
>
> Would anyone object to a patch that exports the blocksize via a
> readonly GUC? Too many tunables are page dependant, which is
> infuriating when copying configs from DB to DB. I wish pgsql had some
> notion of percentages for values that end with a '%'.
Rather than showing the block size, how about we change the tunables to
be physical sizes rather than block based?
effective_cache_size = 1.5GB
shared_buffers = 25MB
Percentages would be slick as well, but doing the above should fix most
of the issue -- and be friendlier to read.
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To: pgsql-performance@postgresql.org
Cc: rbt@rbt.ca, sean@chittenden.org, khera@kcilink.com
Subject: Re: go for a script! / ex: PostgreSQL vs. MySQL
In-Reply-To: <1065837333.12875.1.camel@jester>
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