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srs/trunk/3rdparty/gprof
winlin 15d4993cc3 slowdown the cpu usage for srs to calc connections when too many connections. 0.9.180 11 years ago
..
build_gprof2dot.sh move wiki images to srs.release 11 years ago
gprof2dot.py add gprof files and dot files 11 years ago
graphviz-2.36.0.zip use zip format 11 years ago
readme.txt slowdown the cpu usage for srs to calc connections when too many connections. 0.9.180 11 years ago

readme.txt

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gprof图形化输出工具: gprof2dot.py graphviz-2.18.tar.gz build_gprof2dot.sh

dot:
    http://www.graphviz.org/
    http://www.graphviz.org/Download_source.php
    graphviz-2.18.tar.gz 绘图工具
    build_gprof2dot.sh 编译graphviz命令为dot。
    要求是sudoer需要sudo make install。
    
gprof2dot.py:
    将gprof的日志绘图。
    
使用方法:
0. 若需要图形化编译dot
    cd 3rdparty/gprof && bash build_gprof2dot.sh
1. srs配置时: 
    ./configure --with-gprof
    脚本会加入编译参数"-pg -lc_p"gcc -g -pg -lc_p -c xxx -o xxx.o即在configure中打开 Performance="-pg -lc_p"
    链接时,加入链接选项"-pg"否则无法工作gcc -pg -o srs xxxx.o即在configure中打开 PerformanceLink="-pg"
2. 编译和启动程序make && ./objs/srs -c conf/srs.conf
    退出程序按CTRL+C可以看到生成了gmon.out这个就是性能的统计数据。
3. gprof生成报表
    gprof -b ./objs/srs gmon.out > gprof.srs.log
4. 将报表生成图片:
    ./3rdparty/gprof/gprof2dot.py gprof.srs.log | dot -Tpng -o ~/winlin.png

缩写语句:
    # 生成 ~/winlin.log ~/winlin.png
    rm -f gmon.out; ./objs/srs -c conf/srs.conf
    # 用户按CTRL+C
    file="winlin";gprof -b ./objs/srs gmon.out > ~/${file}.log; ./3rdparty/gprof/gprof2dot.py ~/${file}.log | dot -Tpng -o ~/${file}.png

备注:
    其实gprof生成的日志就可以看不一定要图形化。
    也就是dot和gprof2dot都不用执行。
    参考http://www.cs.utah.edu/dept/old/texinfo/as/gprof.html