On Tue, Aug 2, 2016 at 7:18 AM, Murilo Opsfelder Araújo <muriloo@linux.vnet.ibm.com> wrote:

On 07/25/2016 12:07 PM, Adi Gangidi wrote:
> Hey Murilo
>
> I think so too. Tuned is causing this. But I feel like this shouldn't be the case.
>
> It would seem like right thing to do is to ensure post-install out of box governor should be, what's being set in kernel config
> (on-demand).
>
> Best
> Adi

The tuned package is also installed by default on a RHEL 7.2 ppc64le
minimal installation:

# rpm -q tuned
tuned-2.5.1-4.el7_2.3.noarch

# rpm -q redhat-release-server
redhat-release-server-7.2-9.el7.ppc64le

I don't believe this is a bug with CentOS; it is just honoring what RHEL
installs by default.

Perhaps someone from Red Hat on the list can explain the rationale of
installing tuned by default.

Tuned chooses its profile based on the OS variant. See https://git.fedorahosted.org/cgit/tuned.git/tree/recommend.conf

The RHEL Server and Compute Node variants will use the throughput-performance profile, which sets the ondemand governor, while the Workstation and Client variants use the balanced profile, which sets the conservative governor.

CentOS does not set any variant to /etc/system-release-cpe, so it ends up with the default profile being the balanced.

I guess we could add the "server" string to /etc/system-release-cpe ? At least for ppc64 and ppc64le, I'm sure that is what we want anyway.

[]'s

Gustavo

--
Murilo

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