98 lines
2.4 KiB
ReStructuredText
98 lines
2.4 KiB
ReStructuredText
==============
|
|
Noisy neighbor
|
|
==============
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
**display name**: ``Noisy Neighbor``
|
|
|
|
**goal**: ``noisy_neighbor``
|
|
|
|
.. watcher-term:: watcher.decision_engine.strategy.strategies.noisy_neighbor.NoisyNeighbor
|
|
|
|
Requirements
|
|
------------
|
|
|
|
Metrics
|
|
*******
|
|
|
|
The *noisy_neighbor* strategy requires the following metrics:
|
|
|
|
============================ ============ ======= =======================
|
|
metric service name plugins comment
|
|
============================ ============ ======= =======================
|
|
``cpu_l3_cache`` ceilometer_ none Intel CMT_ is required
|
|
============================ ============ ======= =======================
|
|
|
|
.. _CMT: http://www.intel.com/content/www/us/en/architecture-and-technology/resource-director-technology.html
|
|
.. _ceilometer: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html#openstack-compute
|
|
|
|
Cluster data model
|
|
******************
|
|
|
|
Default Watcher's Compute cluster data model:
|
|
|
|
.. watcher-term:: watcher.decision_engine.model.collector.nova.NovaClusterDataModelCollector
|
|
|
|
Actions
|
|
*******
|
|
|
|
Default Watcher's actions:
|
|
|
|
.. list-table::
|
|
:widths: 30 30
|
|
:header-rows: 1
|
|
|
|
* - action
|
|
- description
|
|
* - ``migration``
|
|
- .. watcher-term:: watcher.applier.actions.migration.Migrate
|
|
|
|
Planner
|
|
*******
|
|
|
|
Default Watcher's planner:
|
|
|
|
.. watcher-term:: watcher.decision_engine.planner.weight.WeightPlanner
|
|
|
|
Configuration
|
|
-------------
|
|
|
|
Strategy parameter is:
|
|
|
|
==================== ====== ============= ============================
|
|
parameter type default Value description
|
|
==================== ====== ============= ============================
|
|
``cache_threshold`` Number 35.0 Performance drop in L3_cache
|
|
threshold for migration
|
|
==================== ====== ============= ============================
|
|
|
|
|
|
Efficacy Indicator
|
|
------------------
|
|
|
|
None
|
|
|
|
Algorithm
|
|
---------
|
|
|
|
For more information on the noisy neighbor strategy please refer to:
|
|
http://specs.openstack.org/openstack/watcher-specs/specs/pike/implemented/noisy_neighbor_strategy.html
|
|
|
|
How to use it ?
|
|
---------------
|
|
|
|
.. code-block:: shell
|
|
|
|
$ openstack optimize audittemplate create \
|
|
at1 noisy_neighbor --strategy noisy_neighbor
|
|
|
|
$ openstack optimize audit create -a at1 \
|
|
-p cache_threshold=45.0
|
|
|
|
External Links
|
|
--------------
|
|
|
|
None
|