RE: Hugepages - benefits / drawbacks
- From: "Bort, Guillermo" <guillermo.bort@xxxxxxx>
- To: <yong321@xxxxxxxxx>, "Christo Kutrovsky" <kutrovsky.oracle@xxxxxxxxx>
- Date: Tue, 7 Oct 2008 20:49:12 -0500
Be ware it's a 'hidden' parameter and thus it should not be implemented
in production environments unless specifically suggested by Oracle or
application vendor (SAP comes to mind). That being said, I do have
access to Oracle on Solaris and will certainly try this parameter under
load (hammerora) and report back ^_^
Perhaps if someone else does this test we can compare results as I will
be running it on a virtual machine.
Guillermo Alan Bort
EDS - ITO DBA Main Group
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Yong Huang
Sent: Tuesday, October 07, 2008 3:56 PM
To: Christo Kutrovsky
Cc: oracle-l@xxxxxxxxxxxxx; krishmanoh@xxxxxxxxx
Subject: Re: Hugepages - benefits / drawbacks
> On Tue, Oct 7, 2008 at 1:26 PM, Yong Huang
> <yong321@xxxxxxxxx> wrote:
> > Hi Krishna,
> >
> >> on Solaris PGA uses ISM
> >
> > Wouldn't that cause PGA to be shared?
Tanel Poder's presentation "Memory Management and Latching Improvements
in Oracle9i and 10g" mentions the parameter _use_ism_for_pga. It didn't
register in my mind when I read it some time ago. I don't have access to
Oracle on Solaris right now. Why does Oracle do this? It would be
interesting to see the effect.
Yong Huang
--
//www.freelists.org/webpage/oracle-l
--
//www.freelists.org/webpage/oracle-l
Other related posts:
