Looks promising, but it will take some time to go through,

thanks

On Thu, Aug 25, 2011 at 12:20 PM, Jack Kingsley <iseriesflorida@xxxxxxxxx>wrote:

Kirk, how about this:

http://www.ibm.com/developerworks/wikis/display/WikiPtype/VIOS_Monitoring




On Thu, Aug 25, 2011 at 10:27 AM, Jim Oberholtzer <midrangel@xxxxxxxxxx
wrote:

Since VIOS is a subset of AIX there are not any really good tools to
monitor I/O there. lvmstat may be the best way to figure that out. I
have not checked to see if that command is in VIOS, but it may be, it's
a staple in AIX. I don't know if MPG's power tools can monitor VIOS, I
know they have one that monitors most Unix variants.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 8/25/2011 9:07 AM, Kirk Goins wrote:
Not that all this isn't good discussion<grin>, but my original question
was
basically how to measure disk performance at the VIOS level? If I
didn't
use VIOS and hosted all my IBM i on top a IBM i partition I could use
the
standard Performance Tools and things like WRKDSKSTS etc.



On Thu, Aug 25, 2011 at 5:06 AM, Jim Oberholtzer<midrangel@xxxxxxxxxx
wrote:

Rob,

You want to have a standard workload you can test with. At V7 use
the
wait accounting tooling built in to the OS. A very good test is
loading
PTFs from an image catalog. On smaller systems ( 4 or< drives)
it
is
often faster to load the CDs one by one than use the image catalog.
All
I/O. I think it starts to even out at about 6 drives.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 8/25/2011 6:57 AM,rob@xxxxxxxxx wrote:
> If I was to play around and unload/reload a lpar to test this,
what would
> be effective measuring?
>
>
> Rob Berendt
> -- Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN
46738
> Ship to: Dock 108 6928N 400E Kendallville, IN 46755
> http://www.dekko.com From: Kirk Goins<kirkgoins@xxxxxxxxx>
To:
> Midrange Systems Technical Discussion<midrange-l@xxxxxxxxxxxx>
Date:
> 08/24/2011 05:04 PM Subject: Re: VIOS and Perf Monitoring Sent
by:
> midrange-l-bounces@xxxxxxxxxxxx According to multiple IBM and
NON-IBM
> sources the answer is along these lines... The OS has no idea
if
these
> disks are real or virtual. The OS will only queue so many I/Os
per
> disk arm available ( I think I got that right ). So if the OS
only
> sees one 280GB disk it will not handle I/O as well vs having
eight
> 35GB disk arms. Now the actual number of real disks arms will
affect
> how well this concept works. On Wed, Aug 24, 2011 at 1:17 PM,
> <rob@xxxxxxxxx> wrote:
>> > I am still not getting why the OS needs to see multiple
arms if they
are
>> > all virtual. Instead of one bigger virtual. It's
still
physically
> spread
>> > across the multiple arms defined either in VIOS or your
hosting
> partition.
>> > Is it some weird thing like "let's calculate your
journal receiver
size
>> > based on the number of arms you have"?
>> >
>> >
>> > Rob Berendt
>> > --
>> > Group Dekko
>> > Dept 1600
>> > Mail to: 2505 Dekko Drive
>> > Garrett, IN 46738
>> > Ship to: Dock 108
>> > 6928N 400E
>> > Kendallville, IN 46755
>> > http://www.dekko.com
>> >
>> >
>> >
>> >
>> >
>> > From: Kirk Goins<kirkgoins@xxxxxxxxx>
>> > To: Midrange-L<midrange-l@xxxxxxxxxxxx>
>> > Date: 08/24/2011 04:12 PM
>> > Subject: VIOS and Perf Monitoring
>> > Sentby:midrange-l-bounces@xxxxxxxxxxxx
>>>>> > >> >
>> >
>> >
>> > I am getting ready to build a system with VIOS as the
Hosting OS and
> will
>> > be
>> > running several IBM i partitions. I know I should use
several
smaller
>> > virtual disks vs 1 big one per partition so the IBM i
OS
wil see
> multiple
>> > disks/arms. So lets say I have 4 IBM i Partitions all
on
top of
VIOS.
>> > Each
>> > partition will see 8 35GB drives and lets say there are
24 139GB ( or
>> > whatever size VIOS wants to call them ) drives
available
to VIOS to
>> > allocate
>> > disk space with. So lots of room but could use more
arms.
Now I
start a
>> > really disk intensive process on 2 partitions. How can
I
tell how
busy
> the
>> > drives really are at the VIOS level? On a partition
with
IBM i
hosting I
>> > can
>> > do WRKDSKSTS on the base IBM i. Just wondering how to
approach disk
perf
>> > issues inthe future.
>> >
>> > Thanks
>> >
>> > --
>> > Kirk
>> > --
--
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