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#!/usr/bin/env python2
# (C) Copyright IBM Corporation 2004
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# on the rights to use, copy, modify, merge, publish, distribute, sub
# license, and/or sell copies of the Software, and to permit persons to whom
# the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# Authors:
# Ian Romanick <idr@us.ibm.com>
# This script is used to run api_speed against several different libGL
# libraries and compare the results. See the show_usage function for more
# details on how to use it.
import re, os, sys, getopt
class results:
def process_file(self, f):
self.cycles = {}
self.iterations = -1
for line in f.readlines():
m = re.match("(\d+) calls to (.{20}) required (\d+) cycles.", line)
if self.iterations != -1 and int(m.group(1)) != self.iterations:
raise
# This could be done with lstrip, but the version of
# the Python library on my system doesn't have it.
# The installed version of Python is quite old. :(
temp = m.group(2)
function_name = None
for i in range(len(temp)):
if temp[i] != ' ':
function_name = temp[i:]
break
if function_name == None:
raise
self.cycles[ function_name ] = int(m.group(3))
self.iterations = int(m.group(1))
def show_results(self):
for name in self.cycles:
print "%s -> %f" % (name, float(self.cycles[name]) / self.iterations)
def compare_results(self, other):
for name in self.cycles:
if other.cycles.has_key(name):
a = float(self.cycles[name]) / float(self.iterations)
b = float(other.cycles[name]) / float(other.iterations)
if abs( a ) < 0.000001:
print "a = %f, b = %f" % (a, b)
else:
p = (100.0 * b / a) - 100.0
print "%- 20s %7.2f - %7.2f = % -6.2f (%+.1f%%)" % (name, a, b, a - b, p)
return
def make_execution_string(lib, iterations):
if lib == None:
return "./api_speed %u" % (iterations)
else:
return "LD_PRELOAD=%s ./api_speed %u" % (lib, iterations)
def show_usage():
print """Usage: %s [-i iterations] {library ...}
The full path to one or more libGL libraries (including the full name of the
library) can be included on the command-line. Each library will be tested,
and the results compared. The first library listed will be used as the
"base line" for all comparisons.""" % (sys.argv[0])
sys.exit(1)
if __name__ == '__main__':
try:
(args, trail) = getopt.getopt(sys.argv[1:], "i:")
except Exception,e:
show_usage()
iterations = 1000000
try:
for (arg,val) in args:
if arg == "-i":
iterations = int(val)
except Exception,e:
show_usage()
# If no libraries were specifically named, just run the test against
# the default system libGL.
if len(trail) == 0:
trail.append(None)
result_array = []
names = []
for lib in trail:
s = make_execution_string( lib, iterations )
r = results()
r.process_file( os.popen(s) )
names.append(lib)
result_array.append(r)
# If the test was only run against one library, just show the results
# of the test run. Otherwise, compare each successive run against
# the first run.
if len( result_array ) == 1:
result_array[0].show_results()
else:
for i in range(1, len( result_array )):
print "%s vs. %s" % (names[0], names[i])
result_array[0].compare_results( result_array[i] )
print ""
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