Re: Various performance questions

From: Dror Matalon <dror(at)zapatec(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Various performance questions
Date: 2003-10-27 17:23:10
Message-ID: 20031027172310.GI2979@rlx11.zapatec.com
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On Mon, Oct 27, 2003 at 11:12:37AM -0500, Vivek Khera wrote:
> >>>>> "DM" == Dror Matalon <dror(at)zapatec(dot)com> writes:
>
> DM> effective_cache_size = 25520 -- freebsd forumla: vfs.hibufspace / 8192
>
> DM> 1. While it seems to work correctly, I'm unclear on why this number is
> DM> correct. 25520*8 = 204160 or 200 Megs. On a machine with 2 Gigs it
> DM> seems like the number should be more like 1 - 1.5 Gigs.
>
> Nope, that's correct...

I know it's correct. I was asking why it's correct.

>
>
> --
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> Vivek Khera, Ph.D. Khera Communications, Inc.
> Internet: khera(at)kciLink(dot)com Rockville, MD +1-240-453-8497
> AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/
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--
Dror Matalon
Zapatec Inc
1700 MLK Way
Berkeley, CA 94709
http://www.zapatec.com

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