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On 01/11/2017 11:34 PM, Saravanan KR wrote:
> Thanks John, I would really appreciate if you could tag me on the
> reviews. I will do the same for mine too.

Hi Saravanan,

Following up on this, have a look at the OS::Mistral::WorflowExecution
Heat spec [1] to trigger Mistral workflows. I'm hoping to use it for
deriving THT parameters for optimal resource isolation in HCI
deployments as I mentioned below. I have a spec [2] which describes
the derivation of the values, but this is provided as an example for
the more general problem of capturing the rules used to derive the
values so that deployers may easily apply them.

Thanks,
   John

[1] OS::Mistral::WorflowExecution https://review.openstack.org/#/c/267770/
[2] TripleO Performance Profiles https://review.openstack.org/#/c/423304/

> On Wed, Jan 11, 2017 at 8:03 PM, John Fulton <johfulto at redhat.com> wrote:
>> On 01/11/2017 12:56 AM, Saravanan KR wrote:
>>>
>>> Thanks Emilien and Giulio for your valuable feedback. I will start
>>> working towards finalizing the workbook and the actions required.
>>
>>
>> Saravanan,
>>
>> If you can add me to the review for your workbook, I'd appreciate it. I'm
>> trying to solve a similar problem, of computing THT params for HCI
>> deployments in order to isolate resources between CephOSDs and NovaComputes,
>> and I was also looking to use a Mistral workflow. I'll add you to the review
>> of any related work, if you don't mind. Your proposal to get NUMA info into
>> Ironic [1] helps me there too. Hope to see you at the PTG.
>>
>> Thanks,
>>   John
>>
>> [1] https://review.openstack.org/396147
>>
>>
>>>> would you be able to join the PTG to help us with the session on the
>>>> overcloud settings optimization?
>>>
>>> I will come back on this, as I have not planned for it yet. If it
>>> works out, I will update the etherpad.
>>>
>>> Regards,
>>> Saravanan KR
>>>
>>>
>>> On Wed, Jan 11, 2017 at 5:10 AM, Giulio Fidente <gfidente at redhat.com>
>>> wrote:
>>>>
>>>> On 01/04/2017 09:13 AM, Saravanan KR wrote:
>>>>>
>>>>>
>>>>> Hello,
>>>>>
>>>>> The aim of this mail is to ease the DPDK deployment with TripleO. I
>>>>> would like to see if the approach of deriving THT parameter based on
>>>>> introspection data, with a high level input would be feasible.
>>>>>
>>>>> Let me brief on the complexity of certain parameters, which are
>>>>> related to DPDK. Following parameters should be configured for a good
>>>>> performing DPDK cluster:
>>>>> * NeutronDpdkCoreList (puppet-vswitch)
>>>>> * ComputeHostCpusList (PreNetworkConfig [4], puppet-vswitch) (under
>>>>> review)
>>>>> * NovaVcpuPinset (puppet-nova)
>>>>>
>>>>> * NeutronDpdkSocketMemory (puppet-vswitch)
>>>>> * NeutronDpdkMemoryChannels (puppet-vswitch)
>>>>> * ComputeKernelArgs (PreNetworkConfig [4]) (under review)
>>>>> * Interface to bind DPDK driver (network config templates)
>>>>>
>>>>> The complexity of deciding some of these parameters is explained in
>>>>> the blog [1], where the CPUs has to be chosen in accordance with the
>>>>> NUMA node associated with the interface. We are working a spec [2], to
>>>>> collect the required details from the baremetal via the introspection.
>>>>> The proposal is to create mistral workbook and actions
>>>>> (tripleo-common), which will take minimal inputs and decide the actual
>>>>> value of parameters based on the introspection data. I have created
>>>>> simple workbook [3] with what I have in mind (not final, only
>>>>> wireframe). The expected output of this workflow is to return the list
>>>>> of inputs for "parameter_defaults",  which will be used for the
>>>>> deployment. I would like to hear from the experts, if there is any
>>>>> drawbacks with this approach or any other better approach.
>>>>
>>>>
>>>>
>>>> hi, I am not an expert, I think John (on CC) knows more but this looks
>>>> like
>>>> a good initial step to me.
>>>>
>>>> once we have the workbook in good shape, we could probably integrate it
>>>> in
>>>> the tripleo client/common to (optionally) trigger it before every
>>>> deployment
>>>>
>>>> would you be able to join the PTG to help us with the session on the
>>>> overcloud settings optimization?
>>>>
>>>> https://etherpad.openstack.org/p/tripleo-ptg-pike
>>>> --
>>>> Giulio Fidente
>>>> GPG KEY: 08D733BA
>
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