|
1
|
|
|
# using this script to try figure out why Ruby 2 is slower than 1.9 |
|
2
|
|
|
require 'flamegraph' |
|
3
|
|
|
|
|
4
|
|
|
Flamegraph.generate('test.html', fidelity: 2) do |
|
5
|
|
|
require File.expand_path("../../config/environment", __FILE__) |
|
6
|
|
|
end |
|
7
|
|
|
exit |
|
8
|
|
|
|
|
9
|
|
|
require 'memory_profiler' |
|
10
|
|
|
|
|
11
|
|
|
result = MemoryProfiler.report do |
|
12
|
|
|
require File.expand_path("../../config/environment", __FILE__) |
|
13
|
|
|
end |
|
14
|
|
|
result.pretty_print |
|
15
|
|
|
|
|
16
|
|
|
exit |
|
17
|
|
|
|
|
18
|
|
|
require 'benchmark' |
|
19
|
|
|
|
|
20
|
|
|
def profile_allocations(name) |
|
21
|
|
|
GC.disable |
|
22
|
|
|
initial_size = ObjectSpace.count_objects |
|
23
|
|
|
yield |
|
24
|
|
|
changes = ObjectSpace.count_objects |
|
25
|
|
|
changes.each do |k, _| |
|
26
|
|
|
changes[k] -= initial_size[k] |
|
27
|
|
|
end |
|
28
|
|
|
puts "#{name} changes" |
|
29
|
|
|
changes.sort { |a, b| b[1] <=> a[1] }.each do |a, b| |
|
30
|
|
|
next if b <= 0 |
|
31
|
|
|
# 1 extra hash for tracking |
|
32
|
|
|
puts "#{a} #{a == :T_HASH ? b - 1 : b}" |
|
33
|
|
|
end |
|
34
|
|
|
GC.enable |
|
35
|
|
|
end |
|
36
|
|
|
|
|
37
|
|
|
def profile(name, &block) |
|
38
|
|
|
puts "Profiling all object allocation for #{name}" |
|
39
|
|
|
GC.start |
|
40
|
|
|
GC.disable |
|
41
|
|
|
|
|
42
|
|
|
items = [] |
|
43
|
|
|
objs = [] |
|
44
|
|
|
|
|
45
|
|
|
ObjectSpace.trace_object_allocations do |
|
46
|
|
|
block.call |
|
47
|
|
|
|
|
48
|
|
|
ObjectSpace.each_object do |o| |
|
49
|
|
|
objs << o |
|
50
|
|
|
end |
|
51
|
|
|
|
|
52
|
|
|
objs.each do |o| |
|
53
|
|
|
g = ObjectSpace.allocation_generation(o) |
|
54
|
|
|
if g |
|
55
|
|
|
l = ObjectSpace.allocation_sourceline(o) |
|
56
|
|
|
f = ObjectSpace.allocation_sourcefile(o) |
|
57
|
|
|
c = ObjectSpace.allocation_class_path(o) |
|
58
|
|
|
m = ObjectSpace.allocation_method_id(o) |
|
59
|
|
|
items << "Allocated #{c} in #{m} #{f}:#{l}" |
|
60
|
|
|
end |
|
61
|
|
|
end |
|
62
|
|
|
end |
|
63
|
|
|
|
|
64
|
|
|
items.group_by { |x| x }.sort { |a, b| b[1].length <=> a[1].length }.each do |row, group| |
|
65
|
|
|
puts "#{row} x #{group.length}" |
|
66
|
|
|
end |
|
67
|
|
|
|
|
68
|
|
|
GC.enable |
|
69
|
|
|
profile_allocations(name, &block) |
|
70
|
|
|
end |
|
71
|
|
|
|
|
72
|
|
|
def stuff |
|
73
|
|
|
u = User.first |
|
74
|
|
|
r = TopicQuery.new(u, {}).list_latest |
|
75
|
|
|
r.topics.to_a |
|
76
|
|
|
end |
|
77
|
|
|
|
|
78
|
|
|
stuff |
|
79
|
|
|
profile_allocations "stuff" do |
|
80
|
|
|
stuff |
|
81
|
|
|
end |
|
82
|
|
|
|
|
83
|
|
|
# Benchmark.bmbm do |x| |
|
84
|
|
|
# |
|
85
|
|
|
# x.report("find") do |
|
86
|
|
|
# 100.times{stuff} |
|
87
|
|
|
# end |
|
88
|
|
|
# |
|
89
|
|
|
# end |
|
90
|
|
|
# |
|
91
|
|
|
# x.report("grab 10 users id") do |
|
92
|
|
|
# 100.times{User.limit(10).select(:id).to_a} |
|
93
|
|
|
# end |
|
94
|
|
|
# |
|
95
|
|
|
# x.report("grab 10 users") do |
|
96
|
|
|
# 100.times{User.limit(10).to_a} |
|
97
|
|
|
# end |
|
98
|
|
|
# |
|
99
|
|
|
# profile("topic query") do |
|
100
|
|
|
# r = TopicQuery.new(u, {}).list_latest |
|
101
|
|
|
# r.topics.to_a |
|
102
|
|
|
# end |
|
103
|
|
|
|
|
104
|
|
|
# |
|
105
|
|
|
# RubyProf.start |
|
106
|
|
|
# |
|
107
|
|
|
# r = TopicQuery.new(u, {}).list_latest |
|
108
|
|
|
# r.topics.to_a |
|
109
|
|
|
# |
|
110
|
|
|
# result = RubyProf.stop |
|
111
|
|
|
# printer = RubyProf::GraphPrinter.new(result) |
|
112
|
|
|
# # printer = RubyProf::FlatPrinter.new(result) |
|
113
|
|
|
# printer.print(STDOUT, :min_percent => 2) |
|
114
|
|
|
# |
|
115
|
|
|
# exit |
|
116
|
|
|
# |
|
117
|
|
|
# # User.limit(10).to_a |
|
118
|
|
|
# User.limit(10).select(:created_at).to_a |
|
119
|
|
|
# |
|
120
|
|
|
# profile("limit 10") do |
|
121
|
|
|
# User.limit(10).select(:created_at).to_a |
|
122
|
|
|
# end |
|
123
|
|
|
# |
|
124
|
|
|
# exit |
|
125
|
|
|
# User.limit(10).to_a |
|
126
|
|
|
# exit |
|
127
|
|
|
# |
|
128
|
|
|
# User.select('id, 2 bob').first |
|
129
|
|
|
# Benchmark.bmbm do |x| |
|
130
|
|
|
# |
|
131
|
|
|
# x.report("find") do |
|
132
|
|
|
# 100.times{User.find(1)} |
|
133
|
|
|
# end |
|
134
|
|
|
# |
|
135
|
|
|
# x.report("grab 10 users created_at") do |
|
136
|
|
|
# 100.times{User.limit(10).select(:created_at).to_a} |
|
137
|
|
|
# end |
|
138
|
|
|
# |
|
139
|
|
|
# x.report("grab 10 users id") do |
|
140
|
|
|
# 100.times{User.limit(10).select(:id).to_a} |
|
141
|
|
|
# end |
|
142
|
|
|
# |
|
143
|
|
|
# x.report("grab 10 users") do |
|
144
|
|
|
# 100.times{User.limit(10).to_a} |
|
145
|
|
|
# end |
|
146
|
|
|
# |
|
147
|
|
|
# |
|
148
|
|
|
# x.report("pg direct grab 10 users") do |
|
149
|
|
|
# 100.times do |
|
150
|
|
|
# r = ActiveRecord::Base.connection.raw_connection.async_exec("select * from users limit 10") |
|
151
|
|
|
# r.fields.each_with_index do |f,i| |
|
152
|
|
|
# r.ftype(i) |
|
153
|
|
|
# end |
|
154
|
|
|
# r.each_row do |x| |
|
155
|
|
|
# x |
|
156
|
|
|
# end |
|
157
|
|
|
# end |
|
158
|
|
|
# end |
|
159
|
|
|
# |
|
160
|
|
|
# end |
|
161
|
|
|
# |
|
162
|
|
|
|
|
163
|
|
|
# profile("find") do |
|
164
|
|
|
# User.find(1) |
|
165
|
|
|
# end |
|
166
|
|
|
# puts |
|
167
|
|
|
# profile("where") do |
|
168
|
|
|
# User.where(id: 1).first |
|
169
|
|
|
# end |
|
170
|
|
|
|
stevenbeales /
mental-test
