diff options
Diffstat (limited to 'timings/JTimer')
| -rw-r--r-- | timings/JTimer/SConstruct | 54 | ||||
| -rw-r--r-- | timings/JTimer/st.conf | 48 |
2 files changed, 102 insertions, 0 deletions
diff --git a/timings/JTimer/SConstruct b/timings/JTimer/SConstruct new file mode 100644 index 0000000..e1e38d2 --- /dev/null +++ b/timings/JTimer/SConstruct @@ -0,0 +1,54 @@ +# +# __COPYRIGHT__ +# +# 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 the rights to use, copy, modify, merge, publish, +# distribute, sublicense, 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 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 +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 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. +# + +""" +This configuration is for timing how we evaluate long chains of +dependencies, specifically when -j is used. + +We set up a chain of 100 targets that get built from a Python function +action with no source files (equivalent to "echo junk > $TARGET"). +Each target explicitly depends on the next target in turn, so the +Taskmaster will do a deep walk of the dependency graph. + +This test case was contributed by Kevin Massey. Prior to revision 1468, +we had a serious O(N^2) problem in the Taskmaster when handling long +dependency chains like this. That was fixed by adding reference counts +to the Taskmaster so it could be smarter about not re-evaluating Nodes. +""" + +target_cnt = 100 + +env = Environment() + +def write_file( env, target, source ): + path_target = env.File( target ).path + outfile = open( path_target, 'w' ) + outfile.write( 'junk' ) + outfile.close() + +list = [] +for i in range( target_cnt ): + target = 'target_%03d' % i + env.Command( target, [], write_file ) + env.Depends( target, list ) + list.append( target ) diff --git a/timings/JTimer/st.conf b/timings/JTimer/st.conf new file mode 100644 index 0000000..cf1ecbf --- /dev/null +++ b/timings/JTimer/st.conf @@ -0,0 +1,48 @@ +# +# __COPYRIGHT__ +# +# 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 the rights to use, copy, modify, merge, publish, +# distribute, sublicense, 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 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 +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 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. +# + +""" +scons-time.py configuration file for the "JTimer" timing test. +""" + +archive_list = [ 'SConstruct' ] +subdir = '.' +targets = '-j2' + +import sys +sys.path.insert(0, '..') +import SCons_Bars + +revs = [ + 1261, # Fix -j re-scanning built files for implicit deps. + 1307, # Move signature Node tranlation of rel_paths into the class. + 1407, # Use a Dir scanner instead of a hard-coded method. + 1435, # Don't prep .sconsign dependencies until needed. + 1468, # Use waiting-Node reference counts to speed up Taskmaster. + 1703, # Lobotomize Memoizer. + 1706, # Fix _doLookup value-cache misspellings. + 2380, # The Big Signature Refactoring hits branches/core. +] + +vertical_bars = SCons_Bars.Release_Bars.gnuplot(labels=True) + \ + SCons_Bars.Revision_Bars.gnuplot(labels=False, revs=revs) |