Sahid Orentino Ferdjaoui 9724ec118b libvirt: place emulator threads on CONF.compute.cpu_shared_set
Some workloads run best when the hypervisor overhead processes
(emulator threads in libvirt/QEMU) can be placed on different physical
host CPUs than other guest CPU resources. This allows those workloads
to prevent latency spikes for guest vCPU threads.

To ensure emulator threads are placed on a different set of physical
CPUs than those running guest dedicated vCPUs, set the
``CONF.compute.cpu_shared_set`` configuration option to the set of host
CPUs that should be used for best-effort CPU resources. Then set a
flavor extra spec to ``hw:emulator_threads_policy=share`` to instruct
nova to place that workload's emulator threads on that set of host CPUs.

implement: bp/overhead-pin-set
Signed-off-by: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@redhat.com>
Change-Id: I0e63ab37d584ee3d7fde6553efaa61bfc866e67d
2018-05-18 08:52:25 +00:00
2017-08-07 16:00:10 +01:00
2014-05-07 12:14:26 -07:00
2017-11-24 16:51:12 -05:00
2018-05-15 01:12:25 +00:00
2018-01-12 17:05:11 +08:00
2017-09-07 15:42:31 +02:00
2018-03-24 20:27:11 +08:00
2017-03-02 11:50:48 +00:00
2018-05-15 01:12:25 +00:00

========================
Team and repository tags
========================

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    :target: https://governance.openstack.org/tc/reference/tags/index.html

.. Change things from this point on

OpenStack Nova
==============

OpenStack Nova provides a cloud computing fabric controller, supporting a wide
variety of compute technologies, including: libvirt (KVM, Xen, LXC and more),
Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.

Use the following resources to learn more.

API
---

To learn how to use Nova's API, consult the documentation available online at:

- `Compute API Guide <https://developer.openstack.org/api-guide/compute/>`__
- `Compute API Reference <https://developer.openstack.org/api-ref/compute/>`__

For more information on OpenStack APIs, SDKs and CLIs in general, refer to:

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Operators
---------

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available online at:

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In the unfortunate event that bugs are discovered, they should be reported to
the appropriate bug tracker. If you obtained the software from a 3rd party
operating system vendor, it is often wise to use their own bug tracker for
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available at:

- `Bug Tracker <https://bugs.launchpad.net/nova>`__

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----------

For information on how to contribute to Nova, please see the contents of the
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Any new code must follow the development guidelines detailed in the HACKING.rst
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Further developer focused documentation is available at:

- `Official Nova Documentation <https://docs.openstack.org/nova/>`__
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  <https://docs.openstack.org/python-novaclient/>`__

Other Information
-----------------

During each `Summit`_ and `Project Team Gathering`_, we agree on what the whole
community wants to focus on for the upcoming release. The plans for nova can
be found at:

- `Nova Specs <http://specs.openstack.org/openstack/nova-specs/>`__

.. _Summit: https://www.openstack.org/summit/
.. _Project Team Gathering: https://www.openstack.org/ptg/
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