Horton

Re: PostgreSQL and HugePage

Alvaro Herrera <alvherre@commandprompt.com>

View thread
From: Alvaro Herrera <alvherre@commandprompt.com>
To: Greg Stark <gsstark@mit.edu>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>, daveg <daveg@sonic.net>, Mark Kirkwood <mark.kirkwood@catalyst.net.nz>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2010-10-20T19:39:09Z
Lists: pgsql-hackers 
Excerpts from Greg Stark's message of mié oct 20 16:28:25 -0300 2010:
> On Wed, Oct 20, 2010 at 12:17 PM, Greg Stark <gsstark@mit.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.
> 
> http://oss.linbit.com/hugetlb/

Wow, is there no other way to get the huge page size other than opening
and reading /proc/meminfo?

-- 
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support