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Arnout Engelen
by Arnout Engelen
<arnouten(Q)bzzt.net>

锟斤拷锟斤拷锟斤拷锟斤拷:

Arnout Engelen 锟角猴拷锟斤拷Nijmegen锟斤拷学锟斤拷锟斤拷锟较碉拷锟窖э拷锟斤拷锟揭诧拷锟斤拷锟斤拷绨踩拷锟剿綯UNIX锟侥癸拷员锟斤拷锟节匡拷锟斤拷时锟戒，锟斤拷喜锟斤拷锟斤拷锟杰和达拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿癸拷锟�


目录:

 

使锟斤拷GProf锟斤拷锟脚伙拷锟斤拷锟紺/C++锟斤拷锟斤拷

Profiling with GProf

摘要:

锟斤拷锟脚伙拷锟斤拷锟斤拷锟绞憋拷锟揭拷锟阶★拷锟斤拷锟街碉拷锟斤拷呕锟斤拷牡胤锟斤拷呕锟斤拷锟矫伙拷斜锟揭拷锟斤拷霞锟斤拷锟叫∈憋拷锟斤拷呕锟揭伙拷锟绞碉拷锟斤拷锟街伙拷锟斤拷锟�0.04锟斤拷某锟斤拷锟�

GProf 使锟斤拷锟斤拷一锟斤拷锟届常锟津单碉拷锟角非筹拷锟斤拷效锟侥凤拷锟斤拷锟斤拷锟脚伙拷C/C++ 锟斤拷锟津，讹拷锟斤拷锟杰猴拷锟斤拷锟阶碉拷识锟斤拷锟街碉拷锟斤拷呕锟斤拷拇锟斤拷搿Ｒ伙拷锟斤拷虻サ陌锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞撅拷锟紾Prof锟斤拷锟酵拷锟绞讹拷锟斤拷呕锟斤拷锟斤拷锟斤拷丶锟斤拷锟斤拷锟斤拷萁峁癸拷锟斤拷锟绞碉拷锟接︼拷锟斤拷械某锟斤拷锟斤拷3锟斤拷锟接碉拷锟斤拷锟斤拷时锟脚伙拷锟斤拷5锟斤拷摹锟�

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷追锟捷碉拷1982锟斤拷锟斤拷诒锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷乇锟斤拷锟斤拷鄞锟结（the SIGPLAN Symposium on Compiler Construction锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿革拷锟斤拷UNIX 平台锟较碉拷一锟斤拷锟斤拷准锟斤拷锟竭★拷

_________________ _________________ _________________

 

Profiling in a nutshell

锟斤拷锟斤拷锟揭拷锟斤拷锟斤拷母锟斤拷锟角筹拷锟津单ｏ拷通锟斤拷锟斤拷录锟斤拷锟斤拷锟斤拷锟斤拷锟侥碉拷锟矫和斤拷锟斤拷时锟戒，锟斤拷锟角匡拷锟皆硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷某锟斤拷锟轿★拷 锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟狡猴拷要锟斤拷锟窖很讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿碉拷锟角ｏ拷锟斤拷锟斤拷锟斤拷实锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷远锟斤拷锟斤拷锟斤拷只锟斤拷要锟斤拷锟斤拷 gcc 锟斤拷锟斤拷时锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷牟锟斤拷锟�('-pg')锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫的ｏ拷锟斤拷锟斤拷锟斤拷锟窖硷拷锟斤拷锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷泄锟斤拷锟斤拷荩锟斤拷锟饺伙拷锟斤拷锟斤拷锟�'gprof'锟皆革拷锟斤拷锟斤拷姆锟斤拷锟斤拷锟叫╋拷锟斤拷锟斤拷  

锟斤拷锟斤拷锟斤拷锟斤拷: Pathalizer

锟斤拷使锟斤拷锟斤拷一锟斤拷锟斤拷实锟斤拷使锟矫的筹拷锟斤拷锟斤拷锟斤拷为锟斤拷锟接ｏ拷锟斤拷 pathalizer锟斤拷一锟斤拷锟斤拷: 锟斤拷event2dot锟斤拷一锟斤拷锟斤拷路锟斤拷锟斤拷锟铰硷拷锟斤拷锟斤拷锟斤拷锟侥硷拷转锟斤拷为图锟轿伙拷锟斤拷dot锟斤拷锟侥硷拷锟侥癸拷锟竭ｏ拷executable which translates a pathalizer 'events' file to a graphviz 'dot' file锟斤拷锟斤拷

锟津单碉拷说锟斤拷锟斤拷锟斤拷一锟斤拷锟侥硷拷锟斤拷锟斤拷锟饺★拷锟斤拷锟斤拷录锟斤拷锟饺伙拷锟斤拷锟斤拷欠直鸨４锟轿硷拷锟�(锟斤拷页为锟节点，锟揭斤拷页锟斤拷页之锟斤拷锟阶拷锟斤拷锟轿拷撸锟斤拷锟饺伙拷锟斤拷锟叫┩硷拷锟斤拷锟斤拷锟轿伙拷糯锟斤拷图锟轿ｏ拷锟斤拷锟斤拷锟斤拷为图锟轿伙拷锟斤拷'dot'锟斤拷式锟侥硷拷锟斤拷  

锟斤拷锟斤拷锟斤拷锟绞�

锟斤拷锟斤拷锟斤拷锟角革拷锟斤拷锟斤拷未锟斤拷锟脚伙拷锟侥筹拷锟斤拷锟揭伙拷锟绞憋拷锟斤拷锟斤拷锟斤拷锟斤拷堑锟斤拷锟斤拷锟揭拷锟斤拷锟绞憋拷洹ｏ拷锟斤拷业募锟斤拷锟斤拷锟斤拷使锟斤拷event2dot锟斤拷锟斤拷源锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟轿拷锟斤拷耄拷锟斤拷55000锟斤拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷锟斤拷要锟斤拷锟街讹拷锟接ｏ拷 

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

锟斤拷锟斤拷锟斤拷锟�

要使锟斤拷gprof 锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟节憋拷锟斤拷锟绞憋拷锟揭拷锟斤拷锟�'-pg' 选锟筋，锟斤拷锟角撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟铰憋拷锟斤拷源锟斤拷锟斤拷锟铰ｏ拷 
g++ -pg dotgen.cpp readfile.cpp main.cpp graph.cpp config.cpp -o event2dot

锟斤拷锟斤拷锟斤拷锟角匡拷锟斤拷锟劫达拷锟斤拷锟斤拷event2dot锟斤拷锟斤拷使锟斤拷锟斤拷锟斤拷前锟斤拷使锟矫的诧拷锟斤拷锟斤拷锟捷★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷械锟绞憋拷锟�event2dot锟斤拷锟叫的凤拷锟斤拷锟斤拷锟捷会被锟窖硷拷锟斤拷锟斤拷锟斤拷锟斤拷'gmon.out'锟侥硷拷锟叫ｏ拷锟斤拷锟角匡拷锟斤拷通锟斤拷锟斤拷锟斤拷'gprof event2dot | less'锟斤拷锟介看锟斤拷锟斤拷锟�

gprof 锟斤拷锟斤拷示锟斤拷锟斤拷锟铰的猴拷锟斤拷锟饺斤拷锟斤拷要锟斤拷 

 % 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 *)
锟斤拷锟皆匡拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟饺斤拷锟斤拷要: 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷蟛糠值锟斤拷锟斤拷锟绞憋拷锟斤拷锟斤拷锟斤拷锟秸硷拷锟斤拷恕锟�  

锟脚伙拷

锟斤拷锟斤拷锟斤拷锟斤拷锟皆匡拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟襟部分碉拷时锟戒都锟斤拷锟斤拷锟斤拷CompareNodes锟斤拷锟斤拷锟较ｏ拷锟斤拷 grep 锟介看一锟斤拷锟斤拷锟斤拷CompareNodes 只锟角憋拷CompareEdges锟斤拷锟斤拷锟斤拷一锟轿讹拷锟斤拷, 锟斤拷CompareEdges锟斤拷只锟斤拷addAnnotatedEdge锟斤拷锟矫★拷锟斤拷锟斤拷锟角讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷宓ワ拷小锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷应锟斤拷锟斤拷锟斤拷锟脚伙拷锟侥地凤拷锟剿吧ｏ拷

锟斤拷锟斤拷注锟解到addAnnotatedEdge锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷然锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷实锟街ｏ拷锟斤拷锟斤拷却实锟节诧拷锟斤拷锟斤拷玫锟斤拷锟斤拷锟斤拷锟斤拷汀锟斤拷锟斤拷蔷锟斤拷锟斤拷锟斤拷锟斤拷锟� g->edges 锟矫讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷: 锟解将锟斤拷使锟矫诧拷锟揭革拷锟届。  

锟斤拷锟�

锟斤拷锟斤拷锟斤拷锟角匡拷一锟斤拷锟脚伙拷锟斤拷锟斤拷锟斤拷薪锟斤拷: 
real    2m19.314s
user    0m36.370s
sys     0m0.940s
 

锟节讹拷锟斤拷

锟劫达拷锟斤拷锟斤拷 gprof 锟斤拷锟斤拷锟斤拷: 
%   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 *)
锟斤拷锟斤拷锟斤拷锟斤拷前占锟矫达拷锟斤拷锟斤拷锟斤拷时锟侥猴拷锟斤拷锟斤拷锟斤拷锟窖撅拷锟斤拷锟斤拷锟斤拷占锟斤拷锟斤拷锟斤拷时锟侥达拷头锟剿ｏ拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟脚伙拷一锟斤拷锟截ｏ拷锟矫节碉拷锟较ｏ拷锟斤拷锟饺★拷锟斤拷诘锟斤拷锟斤拷锟�

锟斤拷渭锟街憋拷歉锟斤拷薮锟侥斤拷锟斤拷: 

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

锟斤拷锟斤拷 C/C++ 锟斤拷锟斤拷锟斤拷锟斤拷锟�

锟斤拷锟斤拷锟斤拷锟斤拷锟杰讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞癸拷锟絞prof 锟斤拷锟斤拷锟斤拷, 锟斤拷锟斤拷KProf (锟斤拷锟斤拷) 锟斤拷 cgprof锟斤拷锟斤拷然图锟轿斤拷锟斤拷目锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭革拷锟斤拷锟斤拷为锟斤拷锟斤拷锟叫碉拷gprof 使锟矫革拷锟斤拷锟姐。
 

锟斤拷锟斤拷锟斤拷锟斤拷锟皆的筹拷锟斤拷锟斤拷蟹锟斤拷锟�

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絞prof 锟斤拷锟斤拷C/C++ 锟侥筹拷锟斤拷锟斤拷蟹锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞狄伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟�: 锟斤拷 Perl,锟斤拷锟角匡拷锟斤拷锟斤拷Devel::DProf 模锟介。锟斤拷某锟斤拷锟接︼拷锟斤拷锟�perl -d:DProf mycode.pl锟斤拷锟斤拷始锟斤拷锟斤拷使锟斤拷dprofpp锟斤拷锟介看锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絞cj 锟斤拷锟斤拷锟斤拷锟斤拷锟絁ava 锟斤拷锟斤拷锟斤拷也锟斤拷锟斤拷使锟斤拷gprof锟斤拷然锟斤拷目前锟斤拷只支锟街碉拷锟竭程碉拷Java 锟斤拷锟诫。  

锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟窖撅拷锟斤拷锟斤拷锟侥ｏ拷锟斤拷锟角匡拷锟斤拷使锟矫筹拷锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷俚锟斤拷业锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟街碉拷锟斤拷呕锟斤拷牡胤锟斤拷锟斤拷锟街碉拷锟斤拷呕锟斤拷牡胤锟斤拷呕锟斤拷锟斤拷锟斤拷强锟斤拷越锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷 3锟斤拷36锟斤拷 锟斤拷锟劫碉拷锟斤拷锟斤拷 5锟诫，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接匡拷锟斤拷锟斤拷一锟斤拷锟斤拷  

References

 

锟斤拷锟斤拷篇锟斤拷锟铰凤拷锟斤拷锟斤拷锟斤拷

每篇锟斤拷锟铰讹拷锟叫革拷锟皆的凤拷锟斤拷页锟芥。锟斤拷锟斤拷锟揭筹拷锟斤拷铮拷锟斤拷锟斤拷锟斤拷峤伙拷锟斤拷郏锟揭诧拷锟斤拷圆榭达拷锟斤拷锟斤拷锟斤拷叩锟斤拷锟斤拷郏锟�
 锟斤拷锟斤拷页锟斤拷 

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2005-05-07, generated by lfparser version 2.52