On Mon, Feb 22, 2016 at 2:23 PM, drum.lucas@gmail.com
<drum.lucas@gmail.com> wrote:
>
>
> On 22 February 2016 at 07:34, Scott Marlowe <scott.marlowe@gmail.com> wrote:
>>
>> I also noticed you're running RHEL 6.x which runs on the truly ancient
>> (but pretty reliable) 2.6.32 kernel. The newer 3.11 and 3.13 kernels
>> are MUCH faster at IO and a lot smarter about caching and when to swap
>> etc. I've seen several big machines go from a few thousand tps to 15
>> to 20k tps just from going from 3.2 to 3.13. Keep us updated on
>> whether or not a pooler works for you.
>
>
>
> I'm running a CentOS 6.6 with Kernel 2.6.32-504.el6
>
> Is it possible to upgrade to the 3.13 version using Centos 6.6? (I think
> only in Centos 7)
> Is so, can you please provide me any link that shows a IO improvement
> between two kernels? something that I can study
It has been many years since I took care of a Centos box, but in this
article by Josh Berkus about avoiding kernel 3.2 it is mentioned that
centos 7 can in fact run 3.10 kernel.
http://www.databasesoup.com/2014/09/why-you-need-to-avoid-linux-kernel-32.html
