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perf.py: Enable more accurate measurement of cache hit performance

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This commit is contained in:
Joel Rosdahl 2010-08-13 20:38:14 +02:00
parent 18cc772aa6
commit 9ba6a5b247
1 changed files with 18 additions and 8 deletions
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26
perf.py
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@ -39,6 +39,7 @@ must not contain -c or -o as these options will be added later. Example:
DEFAULT_CCACHE = "./ccache"
DEFAULT_DIRECTORY = "."
DEFAULT_HIT_FACTOR = 1
DEFAULT_TIMES = 30
PHASES = [
@ -69,6 +70,7 @@ def test(tmp_dir, options, compiler_args, source_file):
compiler_args += ["-c", "-o"]
extension = splitext(source_file)[1]
hit_factor = options.hit_factor
times = options.times
progress("Creating source code\n")
@ -137,10 +139,11 @@ def test(tmp_dir, options, compiler_args, source_file):
recreate_dir(obj_dir)
progress("Compiling %s\n" % PHASES[2])
t0 = time()
for i in range(times):
run(i, True, False)
progress(".")
result[2] = time() - t0
for j in range(hit_factor):
for i in range(times):
run(i, True, False)
progress(".")
result[2] = (time() - t0) / hit_factor
progress("\n")
###########################################################################
@ -158,10 +161,11 @@ def test(tmp_dir, options, compiler_args, source_file):
recreate_dir(obj_dir)
progress("Compiling %s\n" % PHASES[4])
t0 = time()
for i in range(times):
run(i, True, True)
progress(".")
result[4] = time() - t0
for j in range(hit_factor):
for i in range(times):
run(i, True, True)
progress(".")
result[4] = (time() - t0) / hit_factor
progress("\n")
return result
@ -221,6 +225,11 @@ def main(argv):
"--hardlink",
help="use hard links",
action="store_true")
op.add_option(
"--hit-factor",
help="how many times more to compile the file for cache hits (default: %d)" \
% DEFAULT_HIT_FACTOR,
type="int")
op.add_option(
"--nostats",
help="don't write statistics",
@ -242,6 +251,7 @@ def main(argv):
ccache=DEFAULT_CCACHE,
compilercheck="mtime",
directory=DEFAULT_DIRECTORY,
hit_factor=DEFAULT_HIT_FACTOR,
times=DEFAULT_TIMES)
(options, args) = op.parse_args(argv[1:])
if len(args) < 2: