ceph/src/boost/libs/variant2/benchmark/benchmark1.md

   1 # benchmark1.cpp results
   2
   3 ## VS 2017 15.9.7 64 bit (cl.exe 19.16, /EHsc /std:c++17)
   4
   5 ### /Od
   6
   7 #### Compile time
   8
   9 ```
  10       variant2 (-DONLY_V2): 1837 ms
  11 boost::variant (-DONLY_BV): 2627 ms
  12   std::variant (-DONLY_SV): 1425 ms
  13 ```
  14
  15 #### Run time
  16
  17 ```
  18 N=100000000:
  19         double:   9041 ms; S=7.14286e+14
  20       variant2:  48367 ms; S=7.14286e+14
  21 boost::variant: 102776 ms; S=7.14286e+14
  22   std::variant:  40590 ms; S=7.14286e+14
  23
  24 N=100000000:
  25         double:   9029 ms; S=7.14286e+14
  26       variant2:  92962 ms; S=7.14286e+14
  27 boost::variant: 110441 ms; S=7.14286e+14
  28   std::variant:  92974 ms; S=7.14286e+14
  29 ```
  30
  31 ### /O2 /DNDEBUG
  32
  33 #### Compile time
  34
  35 ```
  36       variant2 (-DONLY_V2): 2571 ms
  37 boost::variant (-DONLY_BV): 3335 ms
  38   std::variant (-DONLY_SV): 1903 ms
  39 ```
  40
  41 #### Run time
  42
  43 ```
  44 N=100000000:
  45         double:   1949 ms; S=7.14286e+14
  46       variant2:   4176 ms; S=7.14286e+14
  47 boost::variant:  11312 ms; S=7.14286e+14
  48   std::variant:   4617 ms; S=7.14286e+14
  49
  50 N=100000000:
  51         double:   1949 ms; S=7.14286e+14
  52       variant2:  11807 ms; S=7.14286e+14
  53 boost::variant:  15632 ms; S=7.14286e+14
  54   std::variant:  10725 ms; S=7.14286e+14
  55 ```
  56
  57 ## g++ 7.4.0 -std=c++17 (Cygwin 64 bit)
  58
  59 ### -O0
  60
  61 #### Compile time
  62
  63 ```
  64       variant2 (-DONLY_V2): 2734 ms
  65 boost::variant (-DONLY_BV): 4308 ms
  66   std::variant (-DONLY_SV): 2298 ms
  67 ```
  68
  69 #### Run time
  70
  71 ```
  72 N=100000000:
  73         double:   3620 ms; S=7.14286e+14
  74       variant2:  29214 ms; S=7.14286e+14
  75 boost::variant:  88492 ms; S=7.14286e+14
  76   std::variant:  39510 ms; S=7.14286e+14
  77
  78 N=100000000:
  79         double:   3642 ms; S=7.14286e+14
  80       variant2:  75822 ms; S=7.14286e+14
  81 boost::variant:  96680 ms; S=7.14286e+14
  82   std::variant:  66411 ms; S=7.14286e+14
  83 ```
  84
  85 ### -O1
  86
  87 #### Compile time
  88
  89 ```
  90       variant2 (-DONLY_V2): 2103 ms
  91 boost::variant (-DONLY_BV): 3398 ms
  92   std::variant (-DONLY_SV): 1841 ms
  93 ```
  94
  95 #### Run time
  96
  97 ```
  98 N=100000000:
  99         double:   1576 ms; S=7.14286e+14
 100       variant2:   3424 ms; S=7.14286e+14
 101 boost::variant:   4356 ms; S=7.14286e+14
 102   std::variant:   3764 ms; S=7.14286e+14
 103
 104 N=100000000:
 105         double:   1582 ms; S=7.14286e+14
 106       variant2:   9062 ms; S=7.14286e+14
 107 boost::variant:   9603 ms; S=7.14286e+14
 108   std::variant:   8825 ms; S=7.14286e+14
 109 ```
 110
 111 ### -O2 -DNDEBUG
 112
 113 #### Compile time
 114
 115 ```
 116       variant2 (-DONLY_V2): 2276 ms
 117 boost::variant (-DONLY_BV): 3647 ms
 118   std::variant (-DONLY_SV): 2111 ms
 119 ```
 120
 121 #### Run time
 122
 123 ```
 124 N=100000000:
 125         double:   1643 ms; S=7.14286e+14
 126       variant2:   3070 ms; S=7.14286e+14
 127 boost::variant:   3385 ms; S=7.14286e+14
 128   std::variant:   3880 ms; S=7.14286e+14
 129
 130 N=100000000:
 131         double:   1622 ms; S=7.14286e+14
 132       variant2:   8101 ms; S=7.14286e+14
 133 boost::variant:   8611 ms; S=7.14286e+14
 134   std::variant:   8694 ms; S=7.14286e+14
 135 ```
 136
 137 ### -O3 -DNDEBUG
 138
 139 #### Compile time
 140
 141 ```
 142       variant2 (-DONLY_V2): 2390 ms
 143 boost::variant (-DONLY_BV): 3768 ms
 144   std::variant (-DONLY_SV): 2094 ms
 145 ```
 146
 147 #### Run time
 148
 149 ```
 150 N=100000000:
 151         double:   1611 ms; S=7.14286e+14
 152       variant2:   2975 ms; S=7.14286e+14
 153 boost::variant:   3232 ms; S=7.14286e+14
 154   std::variant:   3726 ms; S=7.14286e+14
 155
 156 N=100000000:
 157         double:   1603 ms; S=7.14286e+14
 158       variant2:   8157 ms; S=7.14286e+14
 159 boost::variant:   8419 ms; S=7.14286e+14
 160   std::variant:   8659 ms; S=7.14286e+14
 161 ```
 162
 163 ## clang++ 5.0.1 -std=c++17 -stdlib=libc++ (Cygwin 64 bit)
 164
 165 ### -O0
 166
 167 #### Compile time
 168
 169 ```
 170       variant2 (-DONLY_V2): 2190 ms
 171 boost::variant (-DONLY_BV): 3537 ms
 172   std::variant (-DONLY_SV): 2151 ms
 173 ```
 174
 175 #### Run time
 176
 177 ```
 178 N=100000000:
 179         double:   6063 ms; S=7.14286e+14
 180       variant2:  23616 ms; S=7.14286e+14
 181 boost::variant:  92730 ms; S=7.14286e+14
 182   std::variant:  23160 ms; S=7.14286e+14
 183
 184 N=100000000:
 185         double:   6054 ms; S=7.14286e+14
 186       variant2:  52738 ms; S=7.14286e+14
 187 boost::variant:  96896 ms; S=7.14286e+14
 188   std::variant:  72595 ms; S=7.14286e+14
 189 ```
 190
 191 ### -O1
 192
 193 #### Compile time
 194
 195 ```
 196       variant2 (-DONLY_V2): 2722 ms
 197 boost::variant (-DONLY_BV): 4337 ms
 198   std::variant (-DONLY_SV): 2697 ms
 199 ```
 200
 201 #### Run time
 202
 203 ```
 204 N=100000000:
 205         double:   2171 ms; S=7.14286e+14
 206       variant2:   9280 ms; S=7.14286e+14
 207 boost::variant:  51478 ms; S=7.14286e+14
 208   std::variant:   5642 ms; S=7.14286e+14
 209
 210 N=100000000:
 211         double:   2171 ms; S=7.14286e+14
 212       variant2:  22166 ms; S=7.14286e+14
 213 boost::variant:  54084 ms; S=7.14286e+14
 214   std::variant:  14330 ms; S=7.14286e+14
 215 ```
 216
 217 ### -O2 -DNDEBUG
 218
 219 #### Compile time
 220
 221 ```
 222       variant2 (-DONLY_V2): 2499 ms
 223 boost::variant (-DONLY_BV): 3826 ms
 224   std::variant (-DONLY_SV): 2645 ms
 225 ```
 226
 227 #### Run time
 228
 229 ```
 230 N=100000000:
 231         double:   1604 ms; S=7.14286e+14
 232       variant2:   2726 ms; S=7.14286e+14
 233 boost::variant:   6662 ms; S=7.14286e+14
 234   std::variant:   3869 ms; S=7.14286e+14
 235
 236 N=100000000:
 237         double:   1598 ms; S=7.14286e+14
 238       variant2:   8136 ms; S=7.14286e+14
 239 boost::variant:   9236 ms; S=7.14286e+14
 240   std::variant:   6279 ms; S=7.14286e+14
 241 ```
 242
 243 ### -O3 -DNDEBUG
 244
 245 #### Compile time
 246
 247 ```
 248       variant2 (-DONLY_V2): 2509 ms
 249 boost::variant (-DONLY_BV): 3845 ms
 250   std::variant (-DONLY_SV): 2638 ms
 251 ```
 252
 253 #### Run time
 254
 255 ```
 256 N=100000000:
 257         double:   1592 ms; S=7.14286e+14
 258       variant2:   2697 ms; S=7.14286e+14
 259 boost::variant:   6648 ms; S=7.14286e+14
 260   std::variant:   3826 ms; S=7.14286e+14
 261
 262 N=100000000:
 263         double:   1614 ms; S=7.14286e+14
 264       variant2:   8035 ms; S=7.14286e+14
 265 boost::variant:   9221 ms; S=7.14286e+14
 266   std::variant:   6319 ms; S=7.14286e+14
 267 ```