/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to bzrlib/benchmarks/bench_knit.py

  • Committer: mernst at mit
  • Date: 2008-10-16 10:57:16 UTC
  • mto: This revision was merged to the branch mainline in revision 3799.
  • Revision ID: mernst@csail.mit.edu-20081016105716-v8x8n5t2pf7f6uds
Improved documentation of stacked and lightweight branches

These patches improve the User Guide's documentation of stacked and
lightweight branches.

Section "1.2.6 Putting the concepts together" should mention stacked
branches and the difference between them and lightweight branches.  It
should also contain links to further details of the common scenarios.

Section "5.3.4 Getting a lightweight checkout" should mention stacked
branches as an option, and should link to all the options, not just some of
them.  It should also clarify that lightweight only applies to checkouts,
not to arbitrary branches.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/benchmarks/bench_knit.py
 
1
# Copyright (C) 2007 Canonical Ltd
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
16
 
 
17
"""Benchmarks for Knit performance"""
 
18
 
 
19
import os
 
20
 
 
21
from bzrlib import (
 
22
    generate_ids,
 
23
    knit,
 
24
    tests,
 
25
    )
 
26
from bzrlib.benchmarks import Benchmark
 
27
from bzrlib.tests.test_knit import CompiledKnitFeature
 
28
 
 
29
 
 
30
class BenchKnitIndex(Benchmark):
 
31
    """Benchmark Knit index performance."""
 
32
 
 
33
    def create_50k_index(self):
 
34
        """Create an knit index file with 50,000 entries.
 
35
 
 
36
        This isn't super realistic, but it *is* big :)
 
37
 
 
38
        The file 'test.kndx' will be created.
 
39
        """
 
40
        rev_id = generate_ids.gen_revision_id('long.name@this.example.com')
 
41
        versions = [(rev_id, ('fulltext',), 0, 200, [])]
 
42
        pos = 200
 
43
        alt_parent = None
 
44
        for i in xrange(49999):
 
45
            if alt_parent is not None:
 
46
                parent_ids = [rev_id, alt_parent]
 
47
            else:
 
48
                parent_ids = [rev_id]
 
49
            if i % 8 == 0:
 
50
                # The *next* entry will be a merge
 
51
                alt_parent = rev_id
 
52
            else:
 
53
                alt_parent = None
 
54
            rev_id = generate_ids.gen_revision_id('long.name@this.example.com')
 
55
            versions.append((rev_id, ('line-delta',), pos, 200, parent_ids))
 
56
            pos += 200
 
57
        t = self.get_transport()
 
58
        kndx = knit._KnitIndex(t, 'test.kndx', 'w', create=True,
 
59
                               delay_create=True)
 
60
        kndx.add_versions(versions)
 
61
 
 
62
    def setup_load_data_c(self):
 
63
        self.requireFeature(CompiledKnitFeature)
 
64
        orig = knit._load_data
 
65
        def reset():
 
66
            knit._load_data = orig
 
67
        self.addCleanup(reset)
 
68
        from bzrlib._knit_load_data_c import _load_data_c
 
69
        knit._load_data = _load_data_c
 
70
 
 
71
    def setup_load_data_py(self):
 
72
        orig = knit._load_data
 
73
        def reset():
 
74
            knit._load_data = orig
 
75
        self.addCleanup(reset)
 
76
        from bzrlib._knit_load_data_py import _load_data_py
 
77
        knit._load_data = _load_data_py
 
78
 
 
79
    def test_read_50k_index_c(self):
 
80
        self.setup_load_data_c()
 
81
        self.create_50k_index()
 
82
        t = self.get_transport()
 
83
        kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
 
84
 
 
85
    def test_read_50k_index_c_again(self):
 
86
        self.setup_load_data_c()
 
87
        self.create_50k_index()
 
88
        t = self.get_transport()
 
89
        kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
 
90
 
 
91
    def test_read_50k_index_py(self):
 
92
        self.create_50k_index()
 
93
        self.setup_load_data_py()
 
94
        t = self.get_transport()
 
95
        kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
 
96
 
 
97
    def test_read_50k_index_py_again(self):
 
98
        self.create_50k_index()
 
99
        self.setup_load_data_py()
 
100
        t = self.get_transport()
 
101
        kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')