We have a project that is being setup to run on RHEL under z/VM. The sizing
parameters for the guests (Oracle DB, and WebLogic) are being sent to us based
on intel platform sizing. How do some of you handle the sizing conversion from
Intel to IFL's? Are there some rules of thumb, we should kn
Carson, Brad
[cars...@labcorp.com]
Sent: Thursday, February 04, 2010 14:00
To: LINUX-390@VM.MARIST.EDU
Subject: A Question on Sizing z/VM Linux Guests
We have a project that is being setup to run on RHEL under z/VM. The sizing
parameters for the guests (Oracle DB, and WebLogic) are being sent to
-...@vm.marist.edu] On Behalf Of Agblad
Tore
Sent: Thursday, February 04, 2010 8:09 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: A Question on Sizing z/VM Linux Guests
just enough so it doesn't swap, then add 300K perhaps and two small (max 100k)
virtual swapdisks
and a larger 'real' swapdisk
First rule of thumb, don't guess. Since Oracle SGA can be anywhere from
a few hundred megabytes to 10's of gigabytes, you need to size the
server larger than the SGA. If you undersize the server, you WILL have
undesirable performance. On intel they size based on low cost of
storage and I/O avoid
If you're using IBM style DASD as your disk storage, you'll want to size the
linux image's memory considerably smaller than what is suggested for an
Intel processor.
The first reason is that you have several levels of cache before the data
even gets to the linux image. These layers (controller, z/
t SGA and such.
Berry.
-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
RPN01
Sent: donderdag 4 februari 2010 14:17
To: LINUX-390@VM.MARIST.EDU
Subject: Re: A Question on Sizing z/VM Linux Guests
If you're using IBM style DASD as your disk stora
all as possible. Also try to limit SGA
and such.
Berry.
-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
RPN01
Sent: donderdag 4 februari 2010 14:17
To: LINUX-390@VM.MARIST.EDU
Subject: Re: A Question on Sizing z/VM Linux Guests
If you're usi
sounds familiar >> the book tells them to..
From:
"van Sleeuwen, Berry"
To:
LINUX-390@VM.MARIST.EDU
Date:
02/04/2010 08:32 AM
Subject:
Re: A Question on Sizing z/VM Linux Guests
Sent by:
Linux on 390 Port
We have some oracle guests that have been set to 1G. And they ac
Yep - I'd be interested to know which books if they are Oracle publications.
-Original Message-
From: Ron Wells [mailto:rwe...@agfinance.com]
Sent: 04 February 2010 15:02
To: LINUX-390@vm.marist.edu
Subject: Re: A Question on Sizing z/VM Linux Guests
sounds familiar >> the
ble online,
including the ones from our very own Barton Robinson.
On 02/04/2010 09:02 AM, Ron Wells wrote:
sounds familiar>> the book tells them to..
From: "van Sleeuwen, Berry" To:
LINUX-390@VM.MARIST.EDU Date: 02/04/2010 08:32 AM Subject: Re: A
Question on Sizing z/VM Linux Gu
Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Carson,
Brad
Sent: Thursday, February 04, 2010 8:01 AM
To: LINUX-390@vm.marist.edu
Subject: A Question on Sizing z/VM Linux Guests
We have a project that is being setup to run on RHEL under z/VM.
2010/2/4 van Sleeuwen, Berry :
> We have some oracle guests that have been set to 1G. And they actually
> need only 300M. The rest is occupied in cache (between 650 and 710M).
Be aware! The Oracle SGA lives in Linux page cache, together with
in-use programs and shared libraries. So on Oracle syst
O, I didn't know that. I'd expected the reported linux cache to be
filesystem cache and as such not directly related to oracle.
Berry.
-Original Message-
Be aware! The Oracle SGA lives in Linux page cache, together with in-use
programs and shared libraries. So on Oracle systems it is nor
e. I am aware the STMM is
suppose to do that automatically, but I am suspicious of it's assumption
since it does know account for running under zVM.
Thx
Rob van der Heij
Sent by: Linux on 390 Port
02/05/2010 06:14 AM
Please respond to
Linux on 390 Port
To
LINUX-390@VM.MARIST.EDU
cc
Subject
On Fri, Feb 5, 2010 at 4:26 PM, Sterling James wrote:
> I realize that it would not be a apples to apples comparison, but is there
> a similar discussion about sizing guests that are running DB2? With STMM
> on? And the "Be ware!"s? Does DB2 have instrumentation that can tell you
> how it's using
cc
Subject
Re: A Question on Sizing z/VM Linux Guests
On Fri, Feb 5, 2010 at 4:26 PM, Sterling James
wrote:
> I realize that it would not be a apples to apples comparison, but is
there
> a similar discussion about sizing guests that are running DB2? With STMM
> on? And the
Another handy item for Oracle folks is:
http://www.oracle.com/technology/software/tech/orion/index.html
Allows you to simulate Oracle I/O loads on disk configurations without
actually having to install Oracle and find a database big enough to stress
test your filesystem configuration and get your
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