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Re: PostgreSQL and HugePage

From: Greg Stark <gsstark(at)mit(dot)edu>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, daveg <daveg(at)sonic(dot)net>, Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: PostgreSQL and HugePage
Date: 2010-10-20 19:28:25
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Lists: pgsql-hackers
On Wed, Oct 20, 2010 at 12:17 PM, Greg Stark <gsstark(at)mit(dot)edu> wrote:
> I don't think it's a big cost once all the processes
> have been forked if you're reusing them beyond perhaps slightly more
> efficient cache usage.

Hm, this site claims to get a 13% win just from the reduced tlb misses
using a preload hack with Pg 8.2. That would be pretty substantial.


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