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https://github.com/freebsd/freebsd-src
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124 lines
3.5 KiB
Python
124 lines
3.5 KiB
Python
"""Plot the results for each test. Spits out a set of images into the
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current directory.
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"""
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import libplot
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import fileinput
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import collections
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import pprint
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import pylab
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Record = collections.namedtuple('Record', 'variant test size loops src_alignment dst_alignment run_id rawtime comment time bytes rate')
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def unique(rows, name):
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"""Takes a list of values, pulls out the named field, and returns
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a list of the unique values of this field.
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"""
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return sorted(set(getattr(x, name) for x in rows))
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def to_float(v):
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"""Convert a string into a better type.
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>>> to_float('foo')
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'foo'
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>>> to_float('1.23')
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1.23
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>>> to_float('45')
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45
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"""
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try:
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if '.' in v:
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return float(v)
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else:
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return int(v)
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except:
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return v
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def parse():
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# Split the input up
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rows = [x.strip().split(':') for x in fileinput.input()]
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# Automatically turn numbers into the base type
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rows = [[to_float(y) for y in x] for x in rows]
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# Scan once to calculate the overhead
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r = [Record(*(x + [0, 0, 0])) for x in rows]
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bounces = pylab.array([(x.loops, x.rawtime) for x in r if x.test == 'bounce'])
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fit = pylab.polyfit(bounces[:,0], bounces[:,1], 1)
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records = []
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for row in rows:
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# Make a dummy record so we can use the names
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r1 = Record(*(row + [0, 0, 0]))
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bytes = r1.size * r1.loops
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# Calculate the bounce time
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delta = pylab.polyval(fit, [r1.loops])
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time = r1.rawtime - delta
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rate = bytes / time
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records.append(Record(*(row + [time, bytes, rate])))
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return records
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def plot(records, field, scale, ylabel):
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variants = unique(records, 'variant')
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tests = unique(records, 'test')
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colours = libplot.make_colours()
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# A little hack. We want the 'all' record to be drawn last so
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# that it's obvious on the graph. Assume that no tests come
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# before it alphabetically
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variants.reverse()
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for test in tests:
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for variant in variants:
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v = [x for x in records if x.test==test and x.variant==variant]
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v.sort(key=lambda x: x.size)
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V = pylab.array([(x.size, getattr(x, field)) for x in v])
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# Ensure our results appear
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order = 1 if variant == 'this' else 0
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try:
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# A little hack. We want the 'all' to be obvious on
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# the graph
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if variant == 'all':
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pylab.scatter(V[:,0], V[:,1]/scale, label=variant)
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pylab.plot(V[:,0], V[:,1]/scale)
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else:
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pylab.plot(V[:,0], V[:,1]/scale, label=variant,
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zorder=order, c = colours.next())
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except Exception, ex:
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# michaelh1 likes to run this script while the test is
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# still running which can lead to bad data
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print ex, 'on %s of %s' % (variant, test)
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pylab.legend(loc='lower right', ncol=2, prop={'size': 'small'})
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pylab.xlabel('Block size (B)')
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pylab.ylabel(ylabel)
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pylab.title('%s %s' % (test, field))
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pylab.grid()
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pylab.savefig('%s-%s.png' % (test, field), dpi=100)
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pylab.semilogx(basex=2)
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pylab.savefig('%s-%s-semilog.png' % (test, field), dpi=100)
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pylab.clf()
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def test():
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import doctest
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doctest.testmod()
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def main():
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records = parse()
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plot(records, 'rate', 1024**2, 'Rate (MB/s)')
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plot(records, 'time', 1, 'Total time (s)')
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if __name__ == '__main__':
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main()
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