Re: [glob2-devel] profiling

[Luc-Olivier de Charrière]

Ensuite, je fait une partie entière. (compilation "-g -pg -O3 
-march=athlon-xp -funroll-loops -fprefetch-loop-arrays -pipe").
On peut deja être moins fière:
Le CPU:

100.0 % | ***************************************
98.5 % | **
95.0 % | **
93.5 % | **
90.0 % | ***
88.5 % | ***
85.0 % | ***
83.5 % | ***
80.0 % | ***
78.5 % | ***
75.0 % | ***
73.5 % | ***
70.0 % | ***
68.5 % | ***
65.0 % | ***
63.5 % | ***
60.0 % | ****
58.5 % | ****
55.0 % | ****
53.5 % | ***
50.0 % | **
48.5 % | *
45.0 % | *

Le profiling:
Each sample counts as 0.01 seconds.
 %   cumulative   self              self     total          
time   seconds   seconds    calls  Ks/call  Ks/call  name   

30.41    307.34   307.34    82296     0.00     0.00  
Map::updateGradient(int, unsigned char, bool, bool)
18.65    495.87   188.53 31097634     0.00     0.00  
Map::ressourceAviable(int, int, bool, int, int, int*, int*, int*, 
unsigned char)
11.81    615.28   119.41 38806082     0.00     0.00  
SDLDrawableSurface::drawFilledRect(int, int, int, int, unsigned char, 
unsigned char, unsigned char, unsigned char)
 9.51    711.39    96.11 3250189284     0.00     0.00  
Unit::dxdyfromDirection(int, int*, int*)
 4.30    754.81    43.42 3094180667     0.00     0.00  
SDLDrawableSurface::drawPixel(int, int, unsigned char, unsigned char, 
unsigned char, unsigned char)
 3.57    790.85    36.04     6924     0.00     0.00  
Map::updateGlobalGradient(Building*, bool)
 3.46    825.78    34.93 43639932     0.00     0.00  
SDLSprite::draw(SDL_Surface*, SDL_Rect const*, int, int, int)
 2.93    855.41    29.63   478899     0.00     0.00  
SDLDrawableSurface::drawCircle(int, int, int, unsigned char, unsigned 
char, unsigned char, unsigned char)
 2.76    883.29    27.88  1574079     0.00     0.00  
Map::nearestRessource(int, int, int, int*, int*)
 1.54    898.81    15.52     2570     0.00     0.00  
Game::renderMiniMap(int, bool)
 0.98    908.75     9.94    83147     0.00     0.00  Game::drawMap(int, 
int, int, int, int, int, int, bool, bool, bool, bool)
 0.78    916.60     7.85    82200     0.00     0.00  Map::growRessources()
 0.72    923.88     7.28 30539588     0.00     0.00  Building::integrity()
 0.62    930.10     6.22 29149106     0.00     0.00  Building::checkSum()
 0.58    935.95     5.85 36278061     0.00     0.00  
Map::buildingAviable(Building*, bool, int, int, int*)
 0.57    941.69     5.74 28862636     0.00     0.00  Unit::checkSum()
 0.51    946.88     5.19  2221600     0.00     0.00  Unit::handleMovement()

Sachante que:
0-Le jeu est devenu très lent un long moment de la partie, environ le 3e 
quart, le reste fluide.
1-Dans "Unit::dxdyfromDirection(int, int*, int*)" , il y a 
principalement 2 assert(), donc au moins 60% du temps.
2-"Map::ressourceAviable(int, int, bool, int, int, int*, int*, int*, 
unsigned char)" utilise massivement "Unit::dxdyfromDirection(int, int*, 
int*)", (1/6 du temps au bol).
3-"Map::ressourceAviable(int, int, bool, int, int, int*, int*, int*, 
unsigned char)" est surtout utilisé pour optimiser le système 
d'allocation des unités.
4-Je vient d'optimiser un peut tout ça. (après cette partie).
5-Je vient d'optimiser encore tout ça. (au lieu de dormir.)
et la suite demain...