RE: [Iometer-user] Newbie in iometer

[Eric B. <Eri...@bi...>]

Hi Ming,

Thanks for your immediate reply! Regarding the CAD issue, i'm actually=
 trying to simulate on how=0D
CATIA V5 works under Windows XP. Im looking on how to produce the necessary=
 numbers (IOPS/MBPS)
on this application.

Thanks again,
Eric

-----Original Message-----
From: Ming Zhang [mailto:mi...@el...]
Sent: Friday, April 28, 2006 7:41 AM
To: Eric Boco
Cc: iom...@li...
Subject: Re: [Iometer-user] Newbie in iometer


On Fri, 2006-04-28 at 12:54 +0800, Eric Boco wrote:
>=0D
> Sirs,
>=0D
> I have a couple of questions on how Iometer works=0D
> 1.How does Iometer set up a disk transaction and starts the
> transaction? =0D

after u setup the access pattern, dynamo (part of iometer) will generate
a io request base on that access pattern, then submit this io request
via standard system calls.

> 2.When the transaction is finished, does it disk interrupt the
> processor?=0D

this is a complex question, simply to say, yes.

> 3. which then sets up the next transaction? =0D

depends on the access pattern, if the maximum outstanding request # is
1, then iometer will wait the previous request finish, if it is
something larger than 1, then iometer will try to generate a queue of
requests and submit to system, once the ok process the queue, iometer
will generate new requests to keep filling the queue.


> 4. So is the disk is idle while the processor sets up the next
> transaction?

see answer for 3

>=0D
> Btw, how could i configure iometer to simulate how CAD works ? how
> many % write/read?

i do not know. this u need to check your CAD io work load pattern, and
CAD is a too abstract word. u mean the CAD application, or the file
server storing CAD files, or the word "CAD" u mean is not the word i
assumed "computer assisted design".
>=0D
> Would love to hear from you guys.
>=0D
> All the best,=0D
> Eric
>=0D
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>=0D
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CONFIDENTIALITY NOTICE=0D
This email and any attached documents may be confidential
and property of BiTMICRO Networks, Inc. If you are not the=0D
intended recipient, you may not disclose, copy, distribute,
or act in reliance on the information in this email.

Also note, this email and attached documents are scanned for=0D
the presence of virus.  Changes made to this email after it=0D
has been sent is not the responsibility of BiTMICRO Networks, Inc.