← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to tools/time_graph.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2006-05-19 06:14:38 UTC
  • mfrom: (1704.2.23 bzr.mbp.integration)
  • Revision ID: pqm@pqm.ubuntu.com-20060519061438-6300caf3926c3cff
(mbp) small fixes

Show diffs side-by-side

added added

removed removed

Lines of Context:
tools/time_graph.py
1
 
#!/usr/bin/env python
2
 
import random
3
 
import os
4
 
import time
5
 
import sys
6
 
import optparse
7
 
from bzrlib import (
8
 
    branch,
9
 
    commands,
10
 
    graph,
11
 
    ui,
12
 
    trace,
13
 
    _known_graph_py,
14
 
    _known_graph_pyx,
15
 
    )
16
 
from bzrlib.ui import text
17
 
 
18
 
p = optparse.OptionParser()
19
 
p.add_option('--quick', default=False, action='store_true')
20
 
p.add_option('--max-combinations', default=500, type=int)
21
 
p.add_option('--lsprof', default=None, type=str)
22
 
opts, args = p.parse_args(sys.argv[1:])
23
 
 
24
 
trace.enable_default_logging()
25
 
ui.ui_factory = text.TextUIFactory()
26
 
 
27
 
begin = time.clock()
28
 
if len(args) >= 1:
29
 
    b = branch.Branch.open(args[0])
30
 
else:
31
 
    b = branch.Branch.open('.')
32
 
b.lock_read()
33
 
try:
34
 
    g = b.repository.get_graph()
35
 
    parent_map = dict(p for p in g.iter_ancestry([b.last_revision()])
36
 
                         if p[1] is not None)
37
 
finally:
38
 
    b.unlock()
39
 
end = time.clock()
40
 
 
41
 
print 'Found %d nodes, loaded in %.3fs' % (len(parent_map), end - begin)
42
 
 
43
 
def all_heads_comp(g, combinations):
44
 
    h = []
45
 
    pb = ui.ui_factory.nested_progress_bar()
46
 
    try:
47
 
        for idx, combo in enumerate(combinations):
48
 
            if idx & 0x1f == 0:
49
 
                pb.update('proc', idx, len(combinations))
50
 
            h.append(g.heads(combo))
51
 
    finally:
52
 
        pb.finished()
53
 
    return h
54
 
 
55
 
combinations = []
56
 
# parents = parent_map.keys()
57
 
# for p1 in parents:
58
 
#     for p2 in random.sample(parents, 10):
59
 
#         combinations.append((p1, p2))
60
 
# Times for random sampling of 10x1150 of bzrtools
61
 
#   Graph        KnownGraph
62
 
#   96.1s   vs   25.7s  :)
63
 
# Times for 500 'merge parents' from bzr.dev
64
 
#   25.6s   vs   45.0s  :(
65
 
 
66
 
for revision_id, parent_ids in parent_map.iteritems():
67
 
    if parent_ids is not None and len(parent_ids) > 1:
68
 
        combinations.append(parent_ids)
69
 
# The largest portion of the graph that has to be walked for a heads() check
70
 
# combinations = [('john@arbash-meinel.com-20090312021943-tu6tcog48aiujx4s',
71
 
#                  'john@arbash-meinel.com-20090312130552-09xa2xsitf6rilzc')]
72
 
if opts.max_combinations > 0 and len(combinations) > opts.max_combinations:
73
 
    combinations = random.sample(combinations, opts.max_combinations)
74
 
 
75
 
print '      %d combinations' % (len(combinations),)
76
 
 
77
 
def combi_graph(graph_klass, comb):
78
 
    # DEBUG
79
 
    graph._counters[1] = 0
80
 
    graph._counters[2] = 0
81
 
 
82
 
    begin = time.clock()
83
 
    g = graph_klass(parent_map)
84
 
    if opts.lsprof is not None:
85
 
        heads = commands.apply_lsprofiled(opts.lsprof, all_heads_comp, g, comb)
86
 
    else:
87
 
        heads = all_heads_comp(g, comb)
88
 
    end = time.clock()
89
 
    return dict(elapsed=(end - begin), graph=g, heads=heads)
90
 
 
91
 
def report(name, g):
92
 
    print '%s: %.3fs' % (name, g['elapsed'])
93
 
    counters_used = False
94
 
    for c in graph._counters:
95
 
        if c:
96
 
            counters_used = True
97
 
    if counters_used:
98
 
        print '  %s' % (graph._counters,)
99
 
 
100
 
known_python = combi_graph(_known_graph_py.KnownGraph, combinations)
101
 
report('Known', known_python)
102
 
 
103
 
known_pyrex = combi_graph(_known_graph_pyx.KnownGraph, combinations)
104
 
report('Known (pyx)', known_pyrex)
105
 
 
106
 
def _simple_graph(parent_map):
107
 
    return graph.Graph(graph.DictParentsProvider(parent_map))
108
 
 
109
 
if opts.quick:
110
 
    if known_python['heads'] != known_pyrex['heads']:
111
 
        import pdb; pdb.set_trace()
112
 
    print 'ratio: %.1f:1 faster' % (
113
 
        known_python['elapsed'] / known_pyrex['elapsed'],)
114
 
else:
115
 
    orig = combi_graph(_simple_graph, combinations)
116
 
    report('Orig', orig)
117
 
 
118
 
    if orig['heads'] != known_pyrex['heads']:
119
 
        import pdb; pdb.set_trace()
120
 
 
121
 
    print 'ratio: %.1f:1 faster' % (
122
 
        orig['elapsed'] / known_pyrex['elapsed'],)