Re: LIO/sec per CPU limit? Is it Hardware or Oracle code?

I would check for any difference in:

• Machine BIOS setup: hyper-thread, energy configuration, etc
• Kernel parameters in /etc/sysctl.conf
• Limits in /etc/security/limits.conf

If both servers are using the same HW, OS and Oracle SW, there is no point in being an Oracle limitation.
And the basics you probably already checked: disk speed and RAID configuration where the data files are stored, database parameters, concurrent processes, alert log errors, /var/log/messages errors, network between app server and db server, network errors...

On 11 August 2017 at 03:34, Mladen Gogala <gogala.mladen_at_gmail.com> wrote:

> On 08/10/2017 12:46 PM, Henry Poras wrote:
>
>> Thanks for all of the suggestions. Here is where I am so far:
>>
>>
> A pointed question: on the server which uses more CPU, how much CPU is
> spent in kernel mode, as opposed to the user mode? Have you tried doing
> something like sar -u 3 20? If you have, can you post the result? You can
> also check sar history files in the /var/log/sa directory.
>
>
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> Mladen Gogala
> Oracle DBA
> http://mgogala.freehostia.com
>
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>
>

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