← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/benchmarks/__init__.py

  • Committer: Alexander Belchenko
  • Date: 2006-07-30 16:43:12 UTC
  • mto: (1711.2.111 jam-integration)
  • mto: This revision was merged to the branch mainline in revision 1906.
  • Revision ID: bialix@ukr.net-20060730164312-b025fd3ff0cee59e
rename  gpl.txt => COPYING.txt

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/benchmarks/__init__.py
1
 
# Copyright (C) 2006 Canonical Ltd
 
1
# Copyright (C) 2006 by Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
 
17
 
17
18
"""Benchmark test suite for bzr."""
18
19
 
19
 
from bzrlib import (
20
 
    bzrdir,
21
 
    plugin,
22
 
    )
23
 
import bzrlib.branch
 
20
from bzrlib import bzrdir, plugin
24
21
from bzrlib.tests.TestUtil import TestLoader
25
22
from bzrlib.tests.blackbox import ExternalBase
26
23
 
27
24
 
28
25
class Benchmark(ExternalBase):
29
 
    """A Test class which provides helpers for writing benchmark tests."""
30
26
 
31
 
    def make_kernel_like_tree(self, url=None, root='.',
32
 
                              link_working=False):
 
27
    def make_kernel_like_tree(self, url=None):
33
28
        """Setup a temporary tree roughly like a kernel tree.
34
 
 
 
29
        
35
30
        :param url: Creat the kernel like tree as a lightweight checkout
36
 
            of a new branch created at url.
37
 
        :param root: Path where the tree will be created.
38
 
        :param link_working: instead of creating a new copy of all files
39
 
            just hardlink the working tree. Tests must request this, because
40
 
            they must break links if they want to change the files
41
 
        :return: A newly created tree.
42
 
        """
43
 
        from bzrlib.benchmarks.tree_creator.kernel_like import (
44
 
            KernelLikeTreeCreator,
45
 
            )
46
 
        creator = KernelLikeTreeCreator(self, link_working=link_working,
47
 
                                        url=url)
48
 
        return creator.create(root=root)
49
 
 
50
 
    def make_kernel_like_added_tree(self, root='.',
51
 
                                    link_working=True,
52
 
                                    hot_cache=True):
53
 
        """Make a kernel like tree, with all files added
54
 
 
55
 
        :param root: Where to create the files
56
 
        :param link_working: Instead of copying all of the working tree
57
 
            files, just hardlink them to the cached files. Tests can unlink
58
 
            files that they will change.
59
 
        :param hot_cache: Run through the newly created tree and make sure
60
 
            the stat-cache is correct. The old way of creating a freshly
61
 
            added tree always had a hot cache.
62
 
        """
63
 
        from bzrlib.benchmarks.tree_creator.kernel_like import (
64
 
            KernelLikeAddedTreeCreator,
65
 
            )
66
 
        creator = KernelLikeAddedTreeCreator(self, link_working=link_working,
67
 
                                             hot_cache=hot_cache)
68
 
        return creator.create(root=root)
69
 
 
70
 
    def make_kernel_like_committed_tree(self, root='.',
71
 
                                    link_working=True,
72
 
                                    link_bzr=False,
73
 
                                    hot_cache=True):
74
 
        """Make a kernel like tree, with all files added and committed
75
 
 
76
 
        :param root: Where to create the files
77
 
        :param link_working: Instead of copying all of the working tree
78
 
            files, just hardlink them to the cached files. Tests can unlink
79
 
            files that they will change.
80
 
        :param link_bzr: Hardlink the .bzr directory. For readonly 
81
 
            operations this is safe, and shaves off a lot of setup time
82
 
        """
83
 
        from bzrlib.benchmarks.tree_creator.kernel_like import (
84
 
            KernelLikeCommittedTreeCreator,
85
 
            )
86
 
        creator = KernelLikeCommittedTreeCreator(self,
87
 
                                                 link_working=link_working,
88
 
                                                 link_bzr=link_bzr,
89
 
                                                 hot_cache=hot_cache)
90
 
        return creator.create(root=root)
91
 
 
92
 
    def make_kernel_like_inventory(self):
93
 
        """Create an inventory with the properties of a kernel-like tree
94
 
 
95
 
        This should be equivalent to a committed kernel like tree, not
96
 
        just a working tree.
97
 
        """
98
 
        from bzrlib.benchmarks.tree_creator.kernel_like import (
99
 
            KernelLikeInventoryCreator,
100
 
            )
101
 
        creator = KernelLikeInventoryCreator(self)
102
 
        return creator.create()
103
 
 
104
 
    def make_many_commit_tree(self, directory_name='.',
105
 
                              hardlink=False):
 
31
        of a new branch created at url.
 
32
        """
 
33
        # a kernel tree has ~10000 and 500 directory, with most files around 
 
34
        # 3-4 levels deep. 
 
35
        # we simulate this by three levels of dirs named 0-7, givin 512 dirs,
 
36
        # and 20 files each.
 
37
        if url is not None:
 
38
            b = bzrdir.BzrDir.create_branch_convenience(url)
 
39
            d = bzrdir.BzrDir.create('.')
 
40
            bzrlib.branch.BranchReferenceFormat().initialize(d, b)
 
41
            d.create_workingtree()
 
42
        else:
 
43
            self.run_bzr('init')
 
44
        files = []
 
45
        for outer in range(8):
 
46
            files.append("%s/" % outer)
 
47
            for middle in range(8):
 
48
                files.append("%s/%s/" % (outer, middle))
 
49
                for inner in range(8):
 
50
                    prefix = "%s/%s/%s/" % (outer, middle, inner)
 
51
                    files.append(prefix)
 
52
                    files.extend([prefix + str(foo) for foo in range(20)])
 
53
        self.build_tree(files)
 
54
 
 
55
    def make_many_commit_tree(self, directory_name='.'):
106
56
        """Create a tree with many commits.
107
57
        
108
 
        No file changes are included. Not hardlinking the working tree, 
109
 
        because there are no working tree files.
 
58
        No files change are included.
110
59
        """
111
 
        from bzrlib.benchmarks.tree_creator.simple_many_commit import (
112
 
            SimpleManyCommitTreeCreator,
113
 
            )
114
 
        creator = SimpleManyCommitTreeCreator(self, link_bzr=hardlink)
115
 
        return creator.create(root=directory_name)
 
60
        tree = bzrdir.BzrDir.create_standalone_workingtree(directory_name)
 
61
        tree.lock_write()
 
62
        tree.branch.lock_write()
 
63
        tree.branch.repository.lock_write()
 
64
        try:
 
65
            for i in xrange(1000):
 
66
                tree.commit('no-changes commit %d' % i)
 
67
        finally:
 
68
            try:
 
69
                try:
 
70
                    tree.branch.repository.unlock()
 
71
                finally:
 
72
                    tree.branch.unlock()
 
73
            finally:
 
74
                tree.unlock()
 
75
        return tree
116
76
 
117
 
    def make_heavily_merged_tree(self, directory_name='.',
118
 
                                 hardlink=False):
 
77
    def make_heavily_merged_tree(self, directory_name='.'):
119
78
        """Create a tree in which almost every commit is a merge.
120
79
       
121
 
        No file changes are included.  This produces two trees, 
 
80
        No files change are included.  This produces two trees, 
122
81
        one of which is returned.  Except for the first commit, every
123
82
        commit in its revision-history is a merge another commit in the other
124
 
        tree.  Not hardlinking the working tree, because there are no working 
125
 
        tree files.
126
 
        """
127
 
        from bzrlib.benchmarks.tree_creator.heavily_merged import (
128
 
            HeavilyMergedTreeCreator,
129
 
            )
130
 
        creator = HeavilyMergedTreeCreator(self, link_bzr=hardlink)
131
 
        return creator.create(root=directory_name)
132
 
 
133
 
    def create_with_commits(self, num_files, num_commits, directory_name='.',
134
 
                            hardlink=False):
135
 
        """Create a tree with many files and many commits. Every commit changes
136
 
        exactly one file.
137
 
 
138
 
        :param num_files: number of files to be created
139
 
        :param num_commits: number of commits in the newly created tree
140
 
        """
141
 
        from bzrlib.benchmarks.tree_creator.many_commit import (
142
 
            ManyCommitTreeCreator,
143
 
            )
144
 
        creator = ManyCommitTreeCreator(self, link_bzr=hardlink,
145
 
                                        num_files=num_files,
146
 
                                        num_commits=num_commits)
147
 
        tree = creator.create(root=directory_name)
148
 
        files = ["%s/%s" % (directory_name, fn) for fn in creator.files]
149
 
        return tree, files
150
 
 
151
 
    def commit_some_revisions(self, tree, files, num_commits,
152
 
                              changes_per_commit):
153
 
        """Commit a specified number of revisions to some files in a tree,
154
 
        makeing a specified number of changes per commit.
155
 
 
156
 
        :param tree: The tree in which the changes happen.
157
 
        :param files: The list of files where changes should occur.
158
 
        :param num_commits: The number of commits
159
 
        :param changes_per_commit: The number of files that are touched in
160
 
            each commit.
161
 
        """
162
 
        for j in range(num_commits):
163
 
            for i in range(changes_per_commit):
164
 
                fn = files[(i + j) % changes_per_commit]
165
 
                content = range(i) + [i, i, i, '']
166
 
                f = open(fn, "w")
167
 
                try:
168
 
                    f.write("\n".join([str(k) for k in content]))
169
 
                finally:
170
 
                    f.close()
171
 
            tree.commit("new revision")
 
83
        tree.
 
84
        """
 
85
        tree = bzrdir.BzrDir.create_standalone_workingtree(directory_name)
 
86
        tree.lock_write()
 
87
        try:
 
88
            tree2 = tree.bzrdir.sprout('tree2').open_workingtree()
 
89
            tree2.lock_write()
 
90
            try:
 
91
                for i in xrange(250):
 
92
                    revision_id = tree.commit('no-changes commit %d-a' % i)
 
93
                    tree2.branch.fetch(tree.branch, revision_id)
 
94
                    tree2.set_pending_merges([revision_id])
 
95
                    revision_id = tree2.commit('no-changes commit %d-b' % i)
 
96
                    tree.branch.fetch(tree2.branch, revision_id)
 
97
                    tree.set_pending_merges([revision_id])
 
98
                tree.set_pending_merges([])
 
99
            finally:
 
100
                tree.unlock()
 
101
        finally:
 
102
            tree2.unlock()
 
103
        return tree
172
104
 
173
105
 
174
106
def test_suite():
176
108
    testmod_names = [ \
177
109
                   'bzrlib.benchmarks.bench_add',
178
110
                   'bzrlib.benchmarks.bench_bench',
179
 
                   'bzrlib.benchmarks.bench_bundle',
180
 
                   'bzrlib.benchmarks.bench_cache_utf8',
181
111
                   'bzrlib.benchmarks.bench_checkout',
182
112
                   'bzrlib.benchmarks.bench_commit',
183
 
                   'bzrlib.benchmarks.bench_dirstate',
184
 
                   'bzrlib.benchmarks.bench_info',
185
113
                   'bzrlib.benchmarks.bench_inventory',
186
 
                   'bzrlib.benchmarks.bench_knit',
187
114
                   'bzrlib.benchmarks.bench_log',
188
115
                   'bzrlib.benchmarks.bench_osutils',
189
116
                   'bzrlib.benchmarks.bench_rocks',
190
 
                   'bzrlib.benchmarks.bench_startup',
191
117
                   'bzrlib.benchmarks.bench_status',
192
118
                   'bzrlib.benchmarks.bench_transform',
193
119
                   'bzrlib.benchmarks.bench_workingtree',
194
 
                   'bzrlib.benchmarks.bench_sftp',
195
 
                   'bzrlib.benchmarks.bench_xml',
196
120
                   ]
197
121
    suite = TestLoader().loadTestsFromModuleNames(testmod_names) 
198
122