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by Arnout Engelen <arnouten(Q)bzzt.net> ¹ØÓÚ×÷Õß: Arnout Engelen ÊǺÉÀ¼Nijmegen´óѧ¼ÆËã»úϵµÄѧÉú£¬Ò²ÊÇÍøÂ簲ȫ¹«Ë¾TUNIXµÄ¹ÍÔ±¡£ÔÚ¿ÕÏÐʱ¼ä£¬Ëûϲ»¶³¤Åܺʹµ×à¸ßÒôÈø¿Ë˹¡£ Ŀ¼: Profiling in a nutshell °¸Àý·ÖÎö: Pathalizer ¸ø³ÌÐò¼Æʱ ³ÌÐò·ÖÎö ÓÅ»¯ ½á¹û µÚ¶þ±é ÆäËû C/C++ ³ÌÐò·ÖÎöÆ÷ ¶ÔÆäËûÓïÑԵijÌÐò½øÐзÖÎö ½áÂÛ References ¶ÔÕâƪÎÄÕ·¢±íÆÀÂÛ

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Profiling in a nutshell

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real    3m36.316s
user    0m55.590s
sys     0m1.070s

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g++ -pg dotgen.cpp readfile.cpp main.cpp graph.cpp config.cpp -o event2dot

ÏÖÔÚÎÒÃÇ¿ÉÒÔÔÙ´ÎÔËÐÐevent2dot£¬²¢Ê¹ÓÃÎÒÃÇÇ°ÃæʹÓõIJâÊÔÊý¾Ý¡£Õâ´ÎÎÒÃÇÔËÐеÄʱºò£¬event2dotÔËÐеķÖÎöÊý¾Ý»á±»ËѼ¯²¢±£´æÔÚ'gmon.out'ÎļþÖУ¬ÎÒÃÇ¿ÉÒÔͨ¹ýÔËÐÐ'gprof event2dot | less'À´²é¿´½á¹û¡£

gprof »áÏÔʾ³öÈçϵĺ¯Êý±È½ÏÖØÒª£º

 % cumulative  self              self     total
 time seconds  seconds  calls s/call s/call name
43.32   46.03  46.03 339952989  0.00  0.00 CompareNodes(Node *,Node *)
25.06   72.66  26.63    55000   0.00  0.00 getNode(char *,NodeListNode *&)
16.80   90.51  17.85 339433374  0.00  0.00 CompareEdges(Edge *,AnnotatedEdge *)
12.70  104.01  13.50    51987   0.00  0.00 addAnnotatedEdge(AnnotatedGraph *,Edge *)
 1.98  106.11   2.10    51987   0.00  0.00 addEdge(Graph *,Node *,Node *)
 0.07  106.18   0.07        1   0.07  0.07 FindTreshold(AnnotatedEdge *,int)
 0.06  106.24   0.06        1   0.06 28.79 getGraphFromFile(char *,NodeListNode *&,Config *)
 0.02  106.26   0.02        1   0.02 77.40 summarize(GraphListNode *,Config *)
 0.00  106.26   0.00    55000   0.00  0.00 FixName(char *)

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ÎÒÃÇ×¢Òâµ½addAnnotatedEdge±éÀúÁËÒ»¸öÁ´±í¡£ËäÈ»Á´±íÊÇÒ×ÓÚʵÏÖ£¬µ«ÊÇȴʵÔÚ²»ÊÇ×îºÃµÄÊý¾ÝÀàÐÍ¡£ÎÒÃǾö¶¨½«Á´±í g->edges Óöþ²æÊ÷À´´úÌæ: Õ⽫»áʹµÃ²éÕÒ¸ü¿ì¡£  

½á¹û

real    2m19.314s
user    0m36.370s
sys     0m0.940s

µÚ¶þ±é

%   cumulative self           self    total
 time   seconds seconds calls  s/call  s/call name
87.01     25.25  25.25  55000    0.00    0.00 getNode(char *,NodeListNode *&)
10.65     28.34   3.09  51987    0.00    0.00 addEdge(Graph *,Node *,Node *)

Õâ´Î¼òÖ±ÊǸö¾Þ´óµÄ½ø²½:

real    0m3.269s
user    0m0.830s
sys     0m0.090s

ÆäËû C/C++ ³ÌÐò·ÖÎöÆ÷

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References

• Pathalizer: http://pathalizer.sf.net
  
  
• KProf: http://kprof.sf.net
  
  
• cgprof: http://mvertes.free.fr
  
  
• Devel::DProf http://www.perldoc.com/perl5.8.0/lib/Devel/DProf.html
  
  
• gcj: http://gcc.gnu.org/java
  
  
• : pathalizer example files: download for article371
  
  

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2005-05-07, generated by lfparser version 2.52