~linaro-toolchain-dev/cortex-strings/trunk

#!/usr/bin/env python

"""Plot the performance of different variants of the string routines

for one size.

"""

import libplot

import pylab

def plot(records, bytes):

    records = [x for x in records if x.bytes==bytes]

    variants = libplot.unique(records, 'variant', prefer='this')

    functions = libplot.unique(records, 'function')

    X = pylab.arange(len(functions))

    width = 1.0/(len(variants)+1)

    colours = iter('bgrcmyk')

    pylab.figure(1).set_size_inches((16, 12))

    pylab.clf()

    for i, variant in enumerate(variants):

        heights = []

        for function in functions:

            matches = [x for x in records if x.variant==variant and x.function==function and x.src_alignment==8]

            if matches:

                vals = [match.bytes*match.loops/match.elapsed/(1024*1024) for

                        match in matches]

                mean = sum(vals)/len(vals)

                heights.append(mean)

            else:

                heights.append(0)

        pylab.bar(X+i*width, heights, width, color=colours.next(), label=variant)

    axes = pylab.axes()

    axes.set_xticklabels(functions)

    axes.set_xticks(X + 0.5)

    pylab.title('Performance of different variants for %d byte blocks' % bytes)

    pylab.ylabel('Rate (MB/s)')

    pylab.legend(loc='upper left', ncol=3)

    pylab.grid()

    pylab.savefig('top-%06d.png' % bytes, dpi=72)

def main():

    records = libplot.parse()

    for bytes in libplot.unique(records, 'bytes'):

        plot(records, bytes)

    pylab.show()

if __name__ == '__main__':

    main()