[CentOS] Adding RAM

>>> Setting scheduler is global in C4 it can be set as a kernel option
>>> with a scheduler=deadline in grub.
>>
>> Is that an alias for "elevator=deadline" (which I know works)?
>
> No that was me forgetting the option name.
>
> Thanks Peter, it's elevator= not scheduler=

Does this mean I need to add "elevator=deadline" to grub.conf?  Is
there a way to make the change without rebooting?

Matt