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  • Committer: Matthew Gretton-Dann
  • Author(s): Marcus Shawcroft
  • Date: 2013-01-16 20:55:59 UTC
  • mto: This revision was merged to the branch mainline in revision 99.
  • Revision ID: matthew.gretton-dann@linaro.org-20130116205559-7nye0l7d8fvzdye3
This patch fixes an issue in the AArch64 strnlen implementation which
occurs if  ULONG_MAX-15 <= n <= ULONG_MAX.

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scripts/plot-align.py
 
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#!/usr/bin/env python
 
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"""Plot the performance of different variants of one routine versus alignment.
 
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"""
 
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import libplot
 
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import pylab
 
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def plot(records, bytes, function):
 
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    records = [x for x in records if x.bytes==bytes and x.function==function]
 
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    variants = libplot.unique(records, 'variant', prefer='this')
 
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    alignments = libplot.unique(records, 'alignment')
 
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    X = pylab.arange(len(alignments))
 
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    width = 1.0/(len(variants)+1)
 
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    colours = iter('bgrcmyk')
 
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    pylab.figure(1).set_size_inches((16, 12))
 
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    pylab.clf()
 
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    for i, variant in enumerate(variants):
 
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        heights = []
 
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        for alignment in alignments:
 
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            matches = [x for x in records if x.variant==variant and x.alignment==alignment]
 
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            if matches:
 
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                match = matches[0]
 
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                heights.append(match.bytes*match.loops/match.elapsed/(1024*1024))
 
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            else:
 
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                heights.append(0)
 
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        pylab.bar(X+i*width, heights, width, color=colours.next(), label=variant)
 
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    axes = pylab.axes()
 
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    axes.set_xticklabels(alignments)
 
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    axes.set_xticks(X + 0.5)
 
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    pylab.title('Performance of different variants of %(function)s for %(bytes)d byte blocks' % locals())
 
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    pylab.ylabel('Rate (MB/s)')
 
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    pylab.legend(loc='upper left', ncol=3)
 
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    pylab.grid()
 
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    pylab.savefig('alignment-%(function)s-%(bytes)d.png' % locals(), dpi=72)
 
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def main():
 
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    records = libplot.parse()
 
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    for function in libplot.unique(records, 'function'):
 
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        for bytes in libplot.unique(records, 'bytes'):
 
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            plot(records, bytes, function)
 
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    pylab.show()
 
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if __name__ == '__main__':
 
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    main()