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Better approach to averaging the cpu usage.

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 Change: 194210
This commit is contained in:
Gareth Rees 2018-06-27 08:51:17 +01:00
parent 2c494e9878
commit 9ebafea5ab
1 changed files with 5 additions and 6 deletions
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11
mps/tool/monitor
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@ -193,21 +193,20 @@ class MovingAverageRatio(TimeSeries):
"Exponentially weighted moving average on/off ratio."
def __init__(self, t, alpha=0.99):
super().__init__()
self._on = self._off = 0.0
self._on = 0.0
self._off = 0.0
self._last = t
self._alpha = alpha
self._beta = 1 - alpha
self._ratio = 0.0
def off(self, t):
self._on = t - self._last
self._on = self._on * self._alpha + (t - self._last) * self._beta
self._last = t
ratio = self._on / (self._on + self._off)
self._ratio = self._ratio * self._alpha + ratio * self._beta
self._ratio = self._on / (self._on + self._off)
self.append(t, self._ratio)
def on(self, t):
self._off = t - self._last
self._off = self._off * self._alpha + (t - self._last) * self._beta
self._last = t