RE: measuring the extra CPU needed
- From: John Hallas <John.Hallas@xxxxxxxxxxxxxxxxxx>
- To: "oralrnr@xxxxxxxxx" <oralrnr@xxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 22 Jul 2014 11:22:50 +0100
As you are already planning to increase CPU capacity that implies that you
have already done the analysis that identifies what you are short of.
TBH I am guessing that most people do not do exact measurements as, unless you
can replicate the exact volume, data and way it is used it will be difficult to
do that. Therefore a simple theory might be – we have 4 CPUS and are hitting
limits regularly for significant periods of time (significant is very
application specific here – it may be seconds or an hour depending on the
importance of the system and the impact it has).
So my example we might think we need 6 CPU to maintain current and we know that
growth will increase by 25% so that looks like 8 to me – as most sites I have
been at seem to always use even numbers of CPUs.
John
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Orlando L
Sent: 16 July 2014 19:41
To: oracle-l@xxxxxxxxxxxxx
Subject: measuring the extra CPU needed
All,
We have an existing system on 10.2 on AIX. We are planning to increase the CPU
capacity because we seem to be hitting the limits there and also a merger. We
will be adding more population to this application due to the merger, about 25%
more. Assuming that the applications are tuned enough, how do I go about
measuring the increased CPU load needed for this new population.
Thanks,
Orlando.
______________________________________________________________________
Wm Morrison Supermarkets Plc is registered in England with number 358949. The
registered office of the company is situated at Gain Lane, Bradford, West
Yorkshire BD3 7DL. This email and any attachments are intended for the
addressee(s) only and may be confidential.
If you are not the intended recipient, please inform the sender by replying to
the email that you have received in error and then destroy the email.
If you are not the intended recipient, you must not use, disclose, copy or rely
on the email or its attachments in any way.
This email does not constitute a contract in writing for the purposes of the
Law of Property (Miscellaneous Provisions) Act 1989.
Our Standard Terms and Conditions of Purchase, as may be amended from time to
time, apply to any contract that we enter into. The current version of our
Standard Terms and Conditions of Purchase is available at:
http://www.morrisons.co.uk/gscop
Although we have taken steps to ensure the email and its attachments are
virus-free, we cannot guarantee this or accept any responsibility,
and it is the responsibility of recipients to carry out their own virus checks.
______________________________________________________________________
Other related posts:
