Re: VMWare and Oracle IO

From: Jared Still <jkstill_at_gmail.com>
Date: Tue, 7 Oct 2014 16:54:01 -0700
Message-ID: <CAORjz=Pd3w6F_th6LK9Oh8Hf=Q5n7jrkDfrX71Ru+6gWxFUr9w_at_mail.gmail.com>

On Tue, Oct 7, 2014 at 9:22 AM, Andrew Kerber <andrew.kerber_at_gmail.com> wrote:

> Swappiness should be 0. Make sure transparent huge pages are turned off.
> Dirty background ratio =3. Dirty ratio=15. Dirty expire centisecs= 500.
> Dirty write back centisecs=100
>

Thanks Andrew, I can check those.

Pretty sure THP is off.

There is often little CPU activity when this occurs, but I can check the swap and config settings.

Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist Principal Consultant at Pythian
Pythian Blog http://www.pythian.com/blog/author/still/ Oracle Blog: http://jkstill.blogspot.com Home Page: http://jaredstill.com

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Received on Wed Oct 08 2014 - 01:54:01 CEST