Added capacity plotting.
This commit is contained in:
Michael Whittaker
parent
9aac3a7541
commit
5303a004cc
1 changed files with 93 additions and 42 deletions
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@ -106,49 +106,39 @@ class Strategy(Generic[T]):
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read_fraction: Optional[Distribution] = None,
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write_fraction: Optional[Distribution] = None) \
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-> None:
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nodes = nodes or list(self.nodes)
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x_list = [node.x for node in nodes]
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x_index = {x: i for (i, x) in enumerate(x_list)}
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x_ticks = list(range(len(x_list)))
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read_cmap = matplotlib.cm.get_cmap('Reds')
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write_cmap = matplotlib.cm.get_cmap('Blues')
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d = distribution.canonicalize_rw(read_fraction, write_fraction)
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fr = sum(weight * fr for (fr, weight) in d.items())
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fw = 1 - fr
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self._plot_node_load_or_capacity_on(plot_load=True,
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ax=ax,
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nodes=nodes,
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read_fraction=read_fraction,
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write_fraction=write_fraction)
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def read_quorum_to_bar_heights(quorum: Set[T]) -> np.array:
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bar_heights = np.zeros(len(x_list))
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for x in quorum:
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bar_heights[x_index[x]] = 1 / self.read_capacity[x]
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return bar_heights
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def plot_node_capacity(self,
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filename: str,
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nodes: Optional[List[Node[T]]] = None,
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read_fraction: Optional[Distribution] = None,
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write_fraction: Optional[Distribution] = None) \
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-> None:
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fig, ax = plt.subplots()
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self.plot_node_capacity_on(ax,
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nodes=nodes or list(self.nodes),
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read_fraction=read_fraction,
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write_fraction=write_fraction)
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ax.set_xlabel('Node')
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ax.set_ylabel('Throughput')
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fig.tight_layout()
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fig.savefig(filename)
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def write_quorum_to_bar_heights(quorum: Set[T]) -> np.array:
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bar_heights = np.zeros(len(x_list))
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for x in quorum:
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bar_heights[x_index[x]] = 1 / self.write_capacity[x]
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return bar_heights
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bottom = np.zeros(len(x_list))
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for (i, (rq, weight)) in enumerate(zip(self.reads, self.read_weights)):
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bar_heights = fr * weight * read_quorum_to_bar_heights(rq)
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ax.bar(x_ticks,
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bar_heights,
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bottom=bottom,
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color=read_cmap(1 - i * 0.75 / len(self.reads)),
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edgecolor='white', width=0.8)
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bottom += bar_heights
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for (i, (wq, weight)) in enumerate(zip(self.writes, self.write_weights)):
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bar_heights = fw * weight * write_quorum_to_bar_heights(wq)
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ax.bar(x_ticks,
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bar_heights,
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bottom=bottom,
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color=write_cmap(1 - i * 0.75 / len(self.writes)),
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edgecolor='white', width=0.8)
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bottom += bar_heights
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ax.set_xticks(x_ticks)
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ax.set_xticklabels(str(x) for x in x_list)
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def plot_node_capacity_on(self,
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ax: plt.Axes,
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nodes: Optional[List[Node[T]]] = None,
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read_fraction: Optional[Distribution] = None,
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write_fraction: Optional[Distribution] = None) \
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-> None:
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self._plot_node_load_or_capacity_on(plot_load=False,
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ax=ax,
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nodes=nodes,
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read_fraction=read_fraction,
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write_fraction=write_fraction)
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def _node_load(self, x: T, fr: float) -> float:
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"""
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@ -164,4 +154,65 @@ class Strategy(Generic[T]):
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"""
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return max(self._node_load(node.x, fr) for node in self.nodes)
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# TODO(mwhittaker): Add read/write load and capacity and read/write cap.
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def _plot_node_load_or_capacity_on(
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self,
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plot_load: bool,
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ax: plt.Axes,
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nodes: Optional[List[Node[T]]] = None,
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read_fraction: Optional[Distribution] = None,
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write_fraction: Optional[Distribution] = None) \
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-> None:
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nodes = nodes or list(self.nodes)
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x_list = [node.x for node in nodes]
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x_index = {x: i for (i, x) in enumerate(x_list)}
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x_ticks = list(range(len(x_list)))
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read_cmap = matplotlib.cm.get_cmap('Reds')
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write_cmap = matplotlib.cm.get_cmap('Blues')
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d = distribution.canonicalize_rw(read_fraction, write_fraction)
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fr = sum(weight * fr for (fr, weight) in d.items())
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fw = 1 - fr
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def read_quorum_to_bar_heights(quorum: Set[T]) -> np.array:
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bar_heights = np.zeros(len(x_list))
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for x in quorum:
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bar_heights[x_index[x]] = 1
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if plot_load:
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bar_heights[x_index[x]] /= self.read_capacity[x]
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return bar_heights
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def write_quorum_to_bar_heights(quorum: Set[T]) -> np.array:
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bar_heights = np.zeros(len(x_list))
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for x in quorum:
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bar_heights[x_index[x]] = 1
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if plot_load:
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bar_heights[x_index[x]] /= self.write_capacity[x]
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return bar_heights
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capacity = self.capacity(read_fraction=read_fraction,
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write_fraction=write_fraction)
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bottom = np.zeros(len(x_list))
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for (i, (rq, weight)) in enumerate(zip(self.reads, self.read_weights)):
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bar_heights = fr * weight * read_quorum_to_bar_heights(rq)
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if not plot_load:
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bar_heights *= capacity
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ax.bar(x_ticks,
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bar_heights,
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bottom=bottom,
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color=read_cmap(1 - i * 0.75 / len(self.reads)),
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edgecolor='white', width=0.8)
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bottom += bar_heights
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for (i, (wq, weight)) in enumerate(zip(self.writes, self.write_weights)):
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bar_heights = fw * weight * write_quorum_to_bar_heights(wq)
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if not plot_load:
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bar_heights *= capacity
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ax.bar(x_ticks,
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bar_heights,
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bottom=bottom,
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color=write_cmap(1 - i * 0.75 / len(self.writes)),
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edgecolor='white', width=0.8)
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bottom += bar_heights
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ax.set_xticks(x_ticks)
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ax.set_xticklabels(str(x) for x in x_list)
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