diff options
author | Ian Romanick <[email protected]> | 2004-05-26 16:38:38 +0000 |
---|---|---|
committer | Ian Romanick <[email protected]> | 2004-05-26 16:38:38 +0000 |
commit | 63b2e426acc81b0b5da82ca290ea42b5c9db7423 (patch) | |
tree | 94dab04c45183400c077f14fb0e5f8602f370533 /progs/tests/api_speed.py | |
parent | e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8 (diff) |
Test the overhead of just calling a GL function. The Python script is
a helper to do multiple runs and compare the results.
Diffstat (limited to 'progs/tests/api_speed.py')
-rwxr-xr-x | progs/tests/api_speed.py | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/progs/tests/api_speed.py b/progs/tests/api_speed.py new file mode 100755 index 00000000000..d209676261f --- /dev/null +++ b/progs/tests/api_speed.py @@ -0,0 +1,143 @@ +#!/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 <[email protected]> + + +# 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]) / self.iterations + b = float(other.cycles[name]) / other.iterations + 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() + + + result_array = [] + names = [] + + + # If no libraries were specifically named, just run the test against + # the default system libGL. + + if len(trail) == 0: + s = make_execution_string( None, iterations ) + r = results() + r.process_file( os.popen(s) ) + result_array.append(r) + else: + 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 "" |