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54 lines
1.3 KiB
Python
54 lines
1.3 KiB
Python
# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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#
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# The license and distribution terms for this file may be
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# found in the file LICENSE in this distribution or at
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# http://www.rtems.org/license/LICENSE.
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#
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import libxml2
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from libxml2 import xmlNode
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import matplotlib.pyplot as plt
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doc = libxml2.parseFile("tmcontext01.scn")
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ctx = doc.xpathNewContext()
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colors = ['k', 'r', 'b', 'g', 'y', 'm']
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def plot(y, color, label, first):
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n=len(y)
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x=range(0, n)
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if first:
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plt.plot(x, y, color=color, label=label)
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else:
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plt.plot(x, y, color=color)
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plt.title("context switch timing test")
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plt.xlabel('function nest level')
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plt.ylabel('context switch time [ns]')
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c = 0
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for e in ["normal", "dirty"]:
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first = True
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for i in ["Min", "Q1", "Q2", "Q3", "Max"]:
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y=map(xmlNode.getContent, ctx.xpathEval("/Test/ContextSwitchTest[@environment='" + e + "' and not(@load)]/Sample/" + i))
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plot(y, colors[c], e, first)
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first = False
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c = c + 1
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load = 1
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while load > 0:
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first = True
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for i in ["Min", "Q1", "Q2", "Q3", "Max"]:
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y=map(xmlNode.getContent, ctx.xpathEval("/Test/ContextSwitchTest[@environment='dirty' and @load='" + str(load) + "']/Sample/" + i))
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if len(y) > 0:
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plot(y, colors[c], "load " + str(load), first)
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first = False
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else:
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load = 0
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if load > 0:
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load = load + 1
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c = c + 1
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plt.legend()
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plt.show()
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