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Home -> Community -> Mailing Lists -> Oracle-L -> Re: CPU upgrade,how much CPU usage reduction to expect?
Hi, Dennis:
We have just upgraded our storage, so disk io is not our bottleneck now. As our server will have to support 2X capacity, we decided to upgrade CPU(in fact, move to another server with 1.2G CPU,both of them are Fire880). Memory is not bottleneck too, swap is not used on this server.
I will post the result after the server upgrade.
Regards
Zhu Chao.
> Zhu
> In general, a server tends to bottleneck on one of three components --
> CPU, memory, or disk. For example, on a system that is bottlenecked on the
> disk, upgrading the CPUs may have little effect on overall system
> performance. Naturally Oracle production systems with many users tend to
be
> more complex than that. If you can determine which is your bottleneck,
then
> you may get an idea of what the difference in performance will be. A good
> book that discusses these issues in some detail is Cary Millsap and Jeff
> Holt's "Optimizing Oracle Performance". If your Oracle is CPU-licensed,
> upgrading the CPU speed is a way to increase performance without affecting
> your Oracle license. Just don't promise management that going from 900 to
> 1200-mhz will automatically make everything run 33% faster.
>
> Dennis Williams
> DBA
> Lifetouch, Inc.
> dwilliams_at_lifetouch.com
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org
> [mailto:oracle-l-bounce_at_freelists.org]On Behalf Of zhu chao
> Sent: Thursday, April 15, 2004 4:13 AM
> To: oracle-l_at_freelists.org
> Subject: CPU upgrade,how much CPU usage reduction to expect?
>
>
> Hi, list friends;
> A capacity planning job.
> Currently we have a server running 900MHZ*8 Sun Fire880. Peak CPU
usage
> is 60%(User+SYS). We will upgrade our CPu from 900MHZ to 1.2G HZ. And we
> expect to see some CPU usage reduction, so that we can support more users
> and more traffic.
> And we will also replace a 450MHZ*12CPU E4500 with a 900MHZ*8 Fire880.
> According to computer theory and your experience, how much cpu
reduction
> can we expect?
> Thanks;
> Zhu Chao
>
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-- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------Received on Thu Apr 15 2004 - 21:13:45 CDT
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