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Viewing changes to bzrlib/benchmarks/bench_bundle.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2009-10-13 09:29:44 UTC
  • mfrom: (4738.1.1 integration)
  • Revision ID: pqm@pqm.ubuntu.com-20091013092944-37m2zia1k83g061y
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bzrlib/benchmarks/bench_bundle.py
 
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# Copyright (C) 2006 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Tests for bzr bundle performance."""
 
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from cStringIO import StringIO
 
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import os
 
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import shutil
 
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from bzrlib import bzrdir
 
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from bzrlib.benchmarks import Benchmark
 
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from bzrlib.branch import Branch
 
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from bzrlib.bundle.apply_bundle import install_bundle
 
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from bzrlib.bundle.serializer import read_bundle, write_bundle
 
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from bzrlib.revision import NULL_REVISION
 
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from bzrlib.revisionspec import RevisionSpec
 
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from bzrlib.workingtree import WorkingTree
 
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class BundleBenchmark(Benchmark):
 
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    """Benchmarks for bzr bundle performance and bzr merge with a bundle."""
 
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    def test_create_bundle_known_kernel_like_tree(self):
 
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        """Create a bundle for a kernel sized tree with no ignored, unknowns,
 
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        or added and one commit.
 
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        """
 
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        self.make_kernel_like_committed_tree()
 
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        self.time(self.run_bzr, ['bundle', '--revision', '..-1'])
 
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    def test_create_bundle_many_commit_tree (self):
 
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        """Create a bundle for a tree with many commits but no changes."""
 
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        self.make_many_commit_tree()
 
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        self.time(self.run_bzr, ['bundle', '--revision', '..-1'])
 
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    def test_create_bundle_heavily_merged_tree(self):
 
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        """Create a bundle for a heavily merged tree."""
 
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        self.make_heavily_merged_tree()
 
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        self.time(self.run_bzr, ['bundle', '--revision', '..-1'])
 
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    def test_apply_bundle_known_kernel_like_tree(self):
 
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        """Create a bundle for a kernel sized tree with no ignored, unknowns,
 
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        or added and one commit.
 
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        """
 
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        tree = self.make_kernel_like_committed_tree('tree')
 
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        f = open('bundle', 'wb')
 
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        try:
 
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            write_bundle(tree.branch.repository, tree.last_revision(),
 
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                         NULL_REVISION, f)
 
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        finally:
 
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            f.close()
 
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        tree2 = self.make_branch_and_tree('branch_a')
 
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        os.chdir('branch_a')
 
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        self.time(self.run_bzr, ['merge', '../bundle'])
 
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class BundleLibraryLevelWriteBenchmark(Benchmark):
 
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    """ Benchmarks for the write_bundle library function. """
 
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    def _time_read_write(self):
 
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        branch, relpath = Branch.open_containing("a")
 
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        revision_history = branch.revision_history()
 
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        bundle_text = StringIO()
 
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        self.time(write_bundle, branch.repository, revision_history[-1],
 
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                  NULL_REVISION, bundle_text)
 
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        bundle_text.seek(0)
 
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        target_tree = self.make_branch_and_tree('b')
 
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        bundle = self.time(read_bundle, bundle_text)
 
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        self.time(install_bundle, target_tree.branch.repository, bundle)
 
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    def test_few_files_small_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(5, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_small_tree_100_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(5, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 100, 1)
 
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        self._time_read_write()
 
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    def test_few_files_moderate_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_moderate_tree_100_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 100, 1)
 
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        self._time_read_write()
 
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    def test_some_files_moderate_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:100], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_big_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(1000, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_some_files_big_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(1000, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:100], 1, 1)
 
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        self._time_read_write()
 
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class BundleLibraryLevelInstallBenchmark(Benchmark):
 
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    """ Benchmarks for the install_bundle library function. """
 
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    def _time_read_write(self):
 
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        branch, relpath = Branch.open_containing("a")
 
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        revision_history = branch.revision_history()
 
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        bundle_text = StringIO()
 
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        write_bundle(branch.repository, revision_history[-1],
 
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                     NULL_REVISION, bundle_text)
 
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        bundle_text.seek(0)
 
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        target_tree = self.make_branch_and_tree('b')
 
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        bundle = self.time(read_bundle, bundle_text)
 
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        self.time(install_bundle, target_tree.branch.repository, bundle)
 
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    def test_few_files_small_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(5, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_small_tree_100_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(5, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 100, 1)
 
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        self._time_read_write()
 
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    def test_few_files_moderate_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_moderate_tree_100_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 100, 1)
 
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        self._time_read_write()
 
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    def test_some_files_moderate_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(100, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:100], 1, 1)
 
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        self._time_read_write()
 
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    def test_few_files_big_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(1000, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:5], 1, 1)
 
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        self._time_read_write()
 
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    def test_some_files_big_tree_1_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(1000, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:100], 1, 1)
 
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        self._time_read_write()
 
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if __name__ == '__main__':
 
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    # USE the following if you want to regenerate the above test functions
 
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    for treesize, treesize_h in [(5, "small"), (100, "moderate"),
 
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                                 (1000, "big")]:
 
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        for bundlefiles, bundlefiles_h in [(5, "few"), (100, "some")]:
 
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            if bundlefiles > treesize:
 
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                continue
 
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            for num_revisions in [1, 100]:
 
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                if (num_revisions >= 100 and
 
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                        (bundlefiles >= 100 or treesize >= 1000)):
 
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                    # Skip the 100x100x? tests.
 
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                    # And the 100x?x1000
 
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                    continue
 
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                code = """\
 
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    def test_%s_files_%s_tree_%s_revision(self):
 
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        os.mkdir("a")
 
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        tree, files = self.create_with_commits(%s, 1, directory_name="a")
 
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        self.commit_some_revisions(tree, files[:%s], %s, 1)
 
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        self._time_read_write()
 
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""" % (bundlefiles_h, treesize_h, num_revisions,
 
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       treesize, bundlefiles, num_revisions)
 
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                print code
 
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