[ros-dev] Speed Tests (was: ping Alex regarding log2() forscheduler)

[michael at fritscher.net]

Testing on a Atlon 1.2 Ghz and a K6 233 Mhz:
Both on Windows 2000
T:\cvs\_cd>gcc --version
gcc (GCC) 3.4.2 (mingw-special)
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Atlon 1.2 ghz:
T:\cvs\_cd>speedtest
STATS
result orig function            46ffffe9
it took         944301  23%
result orig function inlined    46ffffe9
it took         697547  17%
result second proposal inlined  46ffffe9
it took         774974  19%
result lookup inlined           46ffffe9
it took         603607          15%
result bsr inlined              46ffffe9
it took         656956  16%
result macro                    46ffffe9
it took         336330          8%


K6 233 Mhz:
C:\>speedtest
STATS
result orig function            46ffffe9
it took         5819845         23%
result orig function inlined    46ffffe9
it took         3533468         14%
result second proposal inlined  46ffffe9
it took         4043743         16%
result lookup inlined           46ffffe9
it took         2290520                 9%
result bsr inlined              46ffffe9
it took         5961779         24%
result macro                    46ffffe9
it took         3001376                 12%