From: | Dave Page <dpage(at)postgresql(dot)org> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Greg Smith <gsmith(at)gregsmith(dot)com>, pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Volunteer to build a configuration tool |
Date: | 2007-06-21 15:09:07 |
Message-ID: | 467A9493.2090906@postgresql.org |
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Lists: | pgsql-docs pgsql-performance |
Tom Lane wrote:
> There's another reason for not setting shared_buffers huge, beyond the
> good ones Greg listed: the kernel may or may not consider a large
> shared-memory segment as potentially swappable.
Another is that on Windows, shared memory access is more expensive and
various people have noted that the smallest value for shared_buffers you
can get away with can yield better performance as it leaves more free
for the kernel to use, more efficiently.
Regards, Dave.
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