From 6a31f2c34348888197e5623a22abb1ca291606e9 Mon Sep 17 00:00:00 2001 From: licanwei Date: Mon, 23 Jul 2018 00:03:17 -0700 Subject: [PATCH] Add noisy neighbor description Change-Id: Ibe0feb389e75c6ef52294413011e4fe250b42d0b --- .../strategy/strategies/noisy_neighbor.py | 29 ++++++++++++++----- 1 file changed, 21 insertions(+), 8 deletions(-) diff --git a/watcher/decision_engine/strategy/strategies/noisy_neighbor.py b/watcher/decision_engine/strategy/strategies/noisy_neighbor.py index e4c51682c..3e3b5ee60 100644 --- a/watcher/decision_engine/strategy/strategies/noisy_neighbor.py +++ b/watcher/decision_engine/strategy/strategies/noisy_neighbor.py @@ -28,6 +28,27 @@ CONF = cfg.CONF class NoisyNeighbor(base.NoisyNeighborBaseStrategy): + """Noisy Neighbor strategy using live migration + + *Description* + + This strategy can identify and migrate a Noisy Neighbor - + a low priority VM that negatively affects performance of + a high priority VM in terms of IPC by over utilizing + Last Level Cache. + + *Requirements* + + To enable LLC metric, latest Intel server with CMT support is required. + + *Limitations* + + This is a proof of concept that is not meant to be used in production + + *Spec URL* + + http://specs.openstack.org/openstack/watcher-specs/specs/pike/implemented/noisy_neighbor_strategy.html + """ MIGRATION = "migrate" @@ -38,14 +59,6 @@ class NoisyNeighbor(base.NoisyNeighborBaseStrategy): DEFAULT_WATCHER_PRIORITY = 5 def __init__(self, config, osc=None): - """Noisy Neighbor strategy using live migration - - :param config: A mapping containing the configuration of this strategy - :type config: dict - :param osc: an OpenStackClients object, defaults to None - :type osc: :py:class:`~.OpenStackClients` instance, optional - """ - super(NoisyNeighbor, self).__init__(config, osc) self.meter_name = self.METER_NAME_L3