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# Copyright (C) 2006 by Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as published by
# the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for bzr bundle performance."""
import os
from StringIO import StringIO
from bzrlib.benchmarks import Benchmark
from bzrlib.workingtree import WorkingTree
from bzrlib.branch import Branch
from bzrlib.bundle.serializer import write_bundle
from bzrlib.revisionspec import RevisionSpec
class BundleBenchmark(Benchmark):
"""
The bundle tests should (also) be done at a lower level with
direct call to the bzrlib."""
def test_create_bundle_known_kernel_like_tree(self):
"""
Create a bundle for a kernel sized tree with no ignored, unknowns,
or added and one commit."""
self.make_kernel_like_tree()
self.run_bzr('add')
self.run_bzr('commit', '-m', 'initial import')
self.time(self.run_bzr, 'bundle', '--revision', '..-1')
def test_create_bundle_many_commit_tree (self):
"""
Create a bundle for a tree with many commits but no changes."""
self.make_many_commit_tree()
self.time(self.run_bzr, 'bundle', '--revision', '..-1')
def test_create_bundle_heavily_merged_tree(self):
"""
Create a bundle for a heavily merged tree."""
self.make_heavily_merged_tree()
self.time(self.run_bzr, 'bundle', '--revision', '..-1')
def test_apply_bundle_known_kernel_like_tree(self):
"""
Create a bundle for a kernel sized tree with no ignored, unknowns,
or added and one commit."""
self.make_kernel_like_tree()
self.run_bzr('add')
self.run_bzr('commit', '-m', 'initial import')
self.run_bzr('branch', '.', '../branch_a')
self.run_bzr('bundle', '--revision', '..-1')
f = file('../bundle', 'wb')
try:
f.write(self.run_bzr('bundle', '--revision', '..-1')[0])
finally:
f.close()
os.chdir('../branch_a')
self.time(self.run_bzr, 'merge', '../bundle')
class BundleLibraryLevelBenchmark(Benchmark):
def make_parametrized_tree(self, num_files, num_revisions,
num_files_in_bundle):
"""Create a tree with given parameters. Always creates 2 levels of
directories with the given number of files. Then the given number of
revisions are created, changing some lines in one files in each
revision. Only num_files_in_bundle files are changed in these
revisions.
:param num_files: number of files in tree
:param num_revisions: number of revisions
:param num_files_in_bundle: number of files changed in the revisions
"""
# create files
directories = []
files = []
count = 0
for outer in range(num_files // 64 + 1):
directories.append("%s/" % outer)
for middle in range(8):
prefix = "%s/%s/" % (outer, middle)
directories.append(prefix)
for filename in range(min(8, num_files - count)):
count += 1
files.append(prefix + str(filename))
self.run_bzr('init')
self.build_tree(directories + files)
for d in directories:
self.run_bzr('add', d)
self.run_bzr('commit', '-m', 'initial repo layout')
# create revisions
affected_files = files[:num_files_in_bundle]
count = 0
for changes_file in range(num_revisions // num_files_in_bundle + 1):
for f in affected_files:
count += 1
if count >= num_revisions:
break
content = "\n".join([str(i) for i in range(changes_file)] +
[str(changes_file)] * 5) + "\n"
self.build_tree_contents([(f, content)])
self.run_bzr("commit", '-m', 'some changes')
assert count >= num_revisions
for treesize, treesize_h in [(5, "small"), (100, "moderate"),
(1000, "big")]:
for bundlefiles, bundlefiles_h in [(5, "few"), (100, "some"),
(1000, "many")]:
if bundlefiles > treesize:
continue
for num_revisions in [1, 500, 1000]:
code = """
def test_%s_files_%s_tree_%s_revision(self):
self.make_parametrized_tree(%s, %s, %s)
branch, _ = Branch.open_containing(".")
revision_history = branch.revision_history()
bundle_text = StringIO()
self.time(write_bundle, branch.repository, revision_history[-1],
None, bundle_text)""" % (
bundlefiles_h, treesize_h, num_revisions,
treesize, num_revisions, bundlefiles)
#exec code
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