ceph/src/boost/libs/coroutine/doc/performance.qbk

   1 [/
   2           Copyright Oliver Kowalke 2009.
   3  Distributed under the Boost Software License, Version 1.0.
   4     (See accompanying file LICENSE_1_0.txt or copy at
   5           http://www.boost.org/LICENSE_1_0.txt
   6 ]
   7
   8 [section:performance Performance]
   9
  10 Performance of __boost_coroutine__ was measured on the platforms shown in the
  11 following table. Performance measurements were taken using `rdtsc` and
  12 `boost::chrono::high_resolution_clock`, with overhead corrections, on x86
  13 platforms. In each case, cache warm-up was accounted for, and the one
  14 running thread was pinned to a single CPU.
  15
  16 [table Performance of asymmetric coroutines
  17     [
  18         [Platform]
  19         [switch]
  20         [construction (protected stack-allocator)]
  21         [construction (preallocated stack-allocator)]
  22         [construction (standard stack-allocator)]
  23     ]
  24     [
  25         [i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)]
  26         [49 ns / 50 cycles]
  27         [51 \u00b5s / 51407 cycles]
  28         [14 \u00b5s / 15231 cycles]
  29         [14 \u00b5s / 15216 cycles]
  30     ]
  31     [
  32         [x86_64 (Intel Core2 Q6700, Linux 64bit)]
  33         [12 ns / 39 cycles]
  34         [16 \u00b5s / 41802 cycles]
  35         [6 \u00b5s / 10350 cycles]
  36         [6 \u00b5s / 18817 cycles]
  37     ]
  38 ]
  39
  40 [table Performance of symmetric coroutines
  41     [
  42         [Platform]
  43         [switch]
  44         [construction (protected stack-allocator)]
  45         [construction (preallocated stack-allocator)]
  46         [construction (standard stack-allocator)]
  47     ]
  48     [
  49         [i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)]
  50         [47 ns / 49 cycles]
  51         [27 \u00b5s / 28002 cycles]
  52         [98 ns / 116 cycles]
  53         [319 ns / 328 cycles]
  54     ]
  55     [
  56         [x86_64 (Intel Core2 Q6700, Linux 64bit)]
  57         [10 ns / 33 cycles]
  58         [10 \u00b5s / 22828 cycles]
  59         [42 ns / 710 cycles]
  60         [135 ns / 362 cycles]
  61     ]
  62 ]
  63
  64
  65 [endsect]