ceph/src/boost/libs/format/benchmark/results.txt

   1 // Copyright (c) 2001 Samuel Krempp
   2 //                  krempp@crans.ens-cachan.fr
   3 // Distributed under the Boost Software License, Version 1.0. (See accompany-
   4 // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 // This benchmark is provided purely for information.
   7 // It might not even compile as-is,
   8 //   or not give any sensible results.
   9 //      (e.g., it expects sprintf to be POSIX compliant)
  10
  11  new results ( with  outsstream vs. stringstream)
  12
  13 bjam -sTOOLS="gcc intel-linux-7.1" -sBUILD="release"
  14
  15 ( -sBUILD="profile"  for profiling..)
  16
  17
  18  "_no_reuse_stream" "_stringstr" "_strstream" _no_locale
  19
  20 intel-linux-7.1
  21
  22 for comp in gcc  ; do
  23    echo  "\n------------------- Compiler  $comp : ---------------- "
  24    for var in _overloads _basicfmt _normal; do
  25      echo "\n-- Variant  **" $var "**" :
  26       texe=$EXEBOOST/libs/format/benchmark/bench_format${var}/${comp}/release/bench_format${var} ;
  27       ls -l $texe;
  28       $texe
  29    done
  30 done
  31
  32
  33 // stringstream recréé chaque fois.
  34 -- Variant  ** _normal ** :
  35 -rwx--x--x    1 sam      users       61952 Sep 17 03:13 /home/data/zStore/BBoost/bin/boost//libs/format/benchmark/bench_format_normal/gcc/release/bench_format_normal
  36 printf time         :2.16
  37 ostream time        : 3.69,  = 1.70833 * printf
  38 parsed-once time    : 8.45,  = 3.91204 * printf ,  = 2.28997 * nullStream
  39 reused format time  :10.94,  = 5.06481 * printf ,  = 2.96477 * nullStream
  40 format time         :10.97,  = 5.0787 * printf ,  = 2.9729 * nullStream
  41
  42
  43 Pour le parsing. step 1 : scan_not + str2int (version Iter const& qques % mieux)
  44
  45 ------------------- Compiler  gcc : ----------------
  46
  47 -- Variant  ** _overloads ** :
  48 -rwx--x--x    1 sam      users       52864 2003-09-12 02:59 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_overloads/gcc/release/bench_format_overloads
  49 printf time         :2.21
  50 ostream time        : 3.57,  = 1.61538 * printf
  51 parsed-once time    : 4.93,  = 2.23077 * printf ,  = 1.38095 * nullStream
  52 reused format time  : 9.25,  = 4.18552 * printf ,  = 2.59104 * nullStream
  53 format time         :10.33,  = 4.67421 * printf ,  = 2.89356 * nullStream
  54
  55 -- Variant  ** _basicfmt ** :
  56 -rwx--x--x    1 sam      users       52864 2003-09-12 03:00 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_basicfmt/gcc/release/bench_format_basicfmt
  57 printf time         :2.2
  58 ostream time        : 3.57,  = 1.62273 * printf
  59 parsed-once time    : 4.85,  = 2.20455 * printf ,  = 1.35854 * nullStream
  60 reused format time  : 9.25,  = 4.20455 * printf ,  = 2.59104 * nullStream
  61 format time         :10.29,  = 4.67727 * printf ,  = 2.88235 * nullStream
  62
  63 -- Variant  ** _normal ** :
  64 -rwx--x--x    1 sam      users       53088 2003-09-12 03:00 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_normal/gcc/release/bench_format_normal
  65 printf time         :2.27
  66 ostream time        : 3.47,  = 1.52863 * printf
  67 parsed-once time    : 4.79,  = 2.11013 * printf ,  = 1.3804 * nullStream
  68 reused format time  : 9.88,  = 4.35242 * printf ,  = 2.84726 * nullStream
  69 format time         :10.97,  = 4.8326 * printf ,  = 3.16138 * nullStream
  70
  71 -------------------------------------------------------------------------------------------------
  72 Overload : int, double char * -> put_simple :
  73 #if defined(BOOST_FORMAT_OVERLOADS)
  74         template<class T>
  75         basic_format&   operator%(const char* x)
  76             { return io::detail::feed_overloaded(*this,x); }
  77         template<class T>
  78         basic_format&   operator%(const double x)
  79             { return io::detail::feed_overloaded(*this,x); }
  80         template<class T>
  81         basic_format&   operator%(const int x)
  82             { return io::detail::feed_overloaded(*this,x); }
  83 #endif
  84
  85     // put overloads for common types (-> faster)
  86     template< class Ch, class Tr, class T>
  87     void put_simple( T x,
  88                      const format_item<Ch, Tr>& specs,
  89                      std::basic_string<Ch, Tr> & res,
  90                      io::basic_outsstream<Ch, Tr>& oss_ )
  91     {
  92         typedef std::basic_string<Ch, Tr> string_t;
  93         typedef format_item<Ch, Tr>  format_item_t;
  94
  95         specs.fmtstate_.apply_on(oss_);
  96         const std::ios_base::fmtflags fl=oss_.flags();
  97         const std::streamsize w = oss_.width();
  98
  99         if(w!=0)
 100             oss_.width(0);
 101         put_last( oss_, x);
 102         const Ch * res_beg = oss_.begin();
 103         std::streamsize res_size = std::min(specs.truncate_, oss_.pcount());
 104         int prefix_space = 0;
 105         if(specs.pad_scheme_ & format_item_t::spacepad)
 106             if( res_size == 0 ||   ( res_beg[0] !='+' && res_beg[0] !='-'  ))
 107                 prefix_space = 1;
 108         mk_str(res, res_beg, res_size, w, oss_.fill(), fl,
 109                prefix_space, (specs.pad_scheme_ & format_item_t::centered) !=0 );
 110         clear_buffer( oss_);
 111     } // end- put_simple(..)
 112
 113
 114
 115 ------------------- Compiler  gcc : ----------------
 116
 117 -- Variant  ** _overloads ** :
 118 -rwx--x--x    1 sam      users       52832 2003-09-12 00:17 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_overloads/gcc/release/bench_format_overloads
 119 printf time         :2.13
 120 ostream time        : 2.91,  = 1.3662 * printf
 121 parsed-once time    : 4.48,  = 2.10329 * printf ,  = 1.53952 * nullStream
 122 reused format time  : 9.42,  = 4.42254 * printf ,  = 3.23711 * nullStream
 123 format time         : 11.1,  = 5.21127 * printf ,  = 3.81443 * nullStream
 124
 125 RERUN
 126 printf time         :2.09
 127 ostream time        : 2.92,  = 1.39713 * printf
 128 parsed-once time    : 4.43,  = 2.11962 * printf ,  = 1.51712 * nullStream
 129 reused format time  : 9.29,  = 4.44498 * printf ,  = 3.18151 * nullStream
 130 format time         :11.05,  = 5.28708 * printf ,  = 3.78425 * nullStream
 131
 132 -- Variant  ** _basicfmt ** :
 133 -rwx--x--x    1 sam      users       52832 2003-09-12 00:17 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_basicfmt/gcc/release/bench_format_basicfmt
 134 printf time         :2.16
 135 ostream time        : 3.01,  = 1.39352 * printf
 136 parsed-once time    : 4.41,  = 2.04167 * printf ,  = 1.46512 * nullStream
 137 reused format time  : 9.61,  = 4.44907 * printf ,  = 3.19269 * nullStream
 138 format time         :11.02,  = 5.10185 * printf ,  = 3.66113 * nullStream
 139
 140 -- Variant  ** _no_locale ** :
 141 -rwx--x--x    1 sam      users       52192 2003-09-12 00:09 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_no_locale/gcc/release/bench_format_no_locale
 142 printf time         :2.1
 143 ostream time        : 2.87,  = 1.36667 * printf
 144 parsed-once time    : 4.44,  = 2.11429 * printf ,  = 1.54704 * nullStream
 145 reused format time  : 8.21,  = 3.90952 * printf ,  = 2.86063 * nullStream
 146 format time         : 9.25,  = 4.40476 * printf ,  = 3.223 * nullStream
 147
 148 -- Variant  ** _normal ** :
 149 -rwx--x--x    1 sam      users       53056 2003-09-12 00:17 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_normal/gcc/release/bench_format_normal
 150 printf time         :2.18
 151 ostream time        : 2.92,  = 1.33945 * printf
 152 parsed-once time    : 5.75,  = 2.63761 * printf ,  = 1.96918 * nullStream
 153 reused format time  :10.27,  = 4.71101 * printf ,  = 3.51712 * nullStream
 154
 155
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 170
 171
 172
 173
 174 ------------------- Compiler  gcc : ----------------
 175
 176 -- Variant  ** _normal ** :
 177 -rwx--x--x    1 sam      users       49280 2003-09-10 21:12 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_normal/gcc/release/bench_format_normal
 178 printf time         :2.16
 179 ostream time        : 2.81,  = 1.30093 * printf
 180 stored format time  :11.56,  = 5.35185 * printf ,  = 4.11388 * nullStream
 181 format time         :18.69,  = 8.65278 * printf ,  = 6.65125 * nullStream
 182
 183 -- Variant  ** _static_stream ** :
 184 -rwx--x--x    1 sam      users       45856 2003-09-10 21:13 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_static_stream/gcc/release/bench_format_static_stream
 185 printf time         :2.1
 186 ostream time        : 2.79,  = 1.32857 * printf
 187 stored format time  :  4.5,  = 2.14286 * printf ,  = 1.6129 * nullStream
 188 format time         :10.05,  = 4.78571 * printf ,  = 3.60215 * nullStream
 189
 190 -- Variant  ** _basicfmt ** :
 191 -rwx--x--x    1 sam      users       47200 2003-09-10 21:13 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_basicfmt/gcc/release/bench_format_basicfmt
 192 printf time         :2.22
 193 ostream time        : 2.88,  = 1.2973 * printf
 194 stored format time  : 4.45,  = 2.0045 * printf ,  = 1.54514 * nullStream
 195 format time         :11.67,  = 5.25676 * printf ,  = 4.05208 * nullStream
 196
 197
 198
 199
 200
 201 The cost of imbuing locale after each object is fed :
 202
 203 ------------------- Compiler  gcc : ----------------
 204 -- Variant  _normal :
 205 -rwx--x--x    1 sam      users       49920 2003-09-10 20:23 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_normal/gcc/release/bench_format_normal
 206 printf time         :2.21
 207 ostream time        :  3.1,  = 1.40271 * printf
 208 stored format time  :11.53,  = 3.71935 * stream
 209 format time         :18.86,  = 6.08387 * stream
 210
 211 -- Variant  _static_stream :
 212 -rwx--x--x    1 sam      users       43232 2003-09-10 20:24 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_static_stream/gcc/release/bench_format_static_stream
 213 printf time         :2.19
 214 ostream time        : 3.09,  = 1.41096 * printf
 215 stored format time  : 4.63,  = 1.49838 * stream
 216 format time         :10.12,  = 3.27508 * stream
 217
 218 -- Variant  _basicfmt :
 219 -rwx--x--x    1 sam      users       45760 2003-09-10 20:24 /home/sam/progs/Boost/bin/BBoost//libs/format/benchmark/bench_format_basicfmt/gcc/release/bench_format_basicfmt
 220 printf time         :2.23
 221 ostream time        : 3.14,  = 1.40807 * printf
 222 stored format time  : 4.61,  = 1.46815 * stream
 223 format time         :11.33,  = 3.60828 * stream
 224
 225
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 227
 228
 229
 230
 231 ------------------- Compiler  gcc : ----------------
 232 -- Variant  _normal :
 233 printf time         :2.15
 234 ostream time        :4.42,  = 2.05581 * printf
 235 stored format time  :5.85,  = 1.32353 * stream
 236 format time         :11.53,  = 2.6086 * stream
 237 -- Variant  _no_reuse_stream :
 238 printf time         :2.13
 239 ostream time        :4.4,  = 2.06573 * printf
 240 stored format time  :11.1,  = 2.52273 * stream
 241 format time         :14.3,  = 3.25 * stream
 242 -- Variant  _stringstr :
 243 printf time         :2.01
 244 ostream time        :4.42,  = 2.199 * printf
 245 stored format time  :7.92,  = 1.79186 * stream
 246 format time         :12.8,  = 2.89593 * stream
 247
 248 ------------------- Compiler  intel-linux-7.1 : ----------------
 249 -- Variant  _normal :
 250 printf time         :2.08
 251 ostream time        :4.49,  = 2.15865 * printf
 252 stored format time  :5.3,  = 1.1804 * stream
 253 format time         :17.8,  = 3.96437 * stream
 254 -- Variant  _no_reuse_stream :
 255 printf time         :2.09
 256 ostream time        :4.37,  = 2.09091 * printf
 257 stored format time  :10.07,  = 2.30435 * stream
 258 format time         :14.46,  = 3.30892 * stream
 259 -- Variant  _stringstr :
 260 printf time         :1.99
 261 ostream time        :5.16,  = 2.59296 * printf
 262 stored format time  :5.83,  = 1.12984 * stream
 263 format time         :17.42,  = 3.37597 * stream
 264
 265
 266
 267
 268 // older Result with gcc-3.03 on linux :
 269
 270 // With flag -g :
 271
 272 /***
 273 printf time         :1.2
 274 ostream time        :2.84,  = 2.36667 * printf
 275 stored format time  :8.91,  = 3.13732 * stream
 276 format time         :15.35, = 5.40493 * stream
 277 format3 time        :21.83, = 7.68662 * stream
 278 ***/
 279
 280
 281 // With flag -O
 282
 283 /***
 284 printf time         :1.16
 285 ostream time        :1.94,  = 1.67241 * printf
 286 stored format time  :3.68,  = 1.89691 * stream
 287 format time         :6.31,  = 3.25258 * stream
 288 format3 time        :9.04,  = 4.65979 * stream
 289 ***/
 290
 291 //  ==> that's quite acceptable.
 292
 293 // ------------------------------------------------------------------------------