84 lines
2.0 KiB
Python
84 lines
2.0 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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#
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# Use of this source code is governed by a BSD-style license
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# that can be found in the LICENSE file in the root of the source
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# tree. An additional intellectual property rights grant can be found
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# in the file PATENTS. All contributing project authors may
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# be found in the AUTHORS file in the root of the source tree.
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import psutil
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import sys
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import numpy
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from matplotlib import pyplot
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class CpuSnapshot(object):
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def __init__(self, label):
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self.label = label
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self.samples = []
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def Capture(self, sample_count):
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print ('Capturing %d CPU samples for %s...' %
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((sample_count - len(self.samples)), self.label))
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while len(self.samples) < sample_count:
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self.samples.append(psutil.cpu_percent(1.0, False))
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def Text(self):
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return ('%s: avg=%s, median=%s, min=%s, max=%s' %
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(self.label, numpy.average(self.samples),
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numpy.median(self.samples),
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numpy.min(self.samples), numpy.max(self.samples)))
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def Max(self):
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return numpy.max(self.samples)
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def GrabCpuSamples(sample_count):
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print 'Label for snapshot (enter to quit): '
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label = raw_input().strip()
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if len(label) == 0:
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return None
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snapshot = CpuSnapshot(label)
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snapshot.Capture(sample_count)
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return snapshot
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def main():
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print 'How many seconds to capture per snapshot (enter for 60)?'
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sample_count = raw_input().strip()
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if len(sample_count) > 0 and int(sample_count) > 0:
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sample_count = int(sample_count)
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else:
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print 'Defaulting to 60 samples.'
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sample_count = 60
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snapshots = []
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while True:
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snapshot = GrabCpuSamples(sample_count)
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if snapshot == None:
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break
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snapshots.append(snapshot)
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if len(snapshots) == 0:
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print 'no samples captured'
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return -1
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pyplot.title('CPU usage')
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for s in snapshots:
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pyplot.plot(s.samples, label=s.Text(), linewidth=2)
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pyplot.legend()
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pyplot.show()
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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