fuel-dev team mailing list archive

[Jesse Pretorius <jesse.pretorius@xxxxxxxxx>]

On 24 June 2014 22:26, Andrey Korolev <akorolev@xxxxxxxxxxxx> wrote:

> I am wondered why everyone repeatedly suggesting memory overcommit
> ratio to be equal one, not setting to dynamical characteristic which
> 1. strictly lower than one,
> 2. dependent on many parameters, including absolute memory size and
> existence of co-resident services.
>
> I had said this before two times, as I can remember :)
>

Well, as a counterpoint, we have tested overcommits in production of the
following without any issues:

1) CPU 1:16
2) RAM 1:1.8

It really all depends on how the instances are utilising resources. It only
becomes dangerous to have high overcommit rates when you have busy
instances utilising resources heavily.