PHP性能分析工具XHProf安装使用教程,xhprof安装使用
HProf是facebook开源出来的一个php轻量级的性能分析工具,跟Xdebug类似,但性能开销更低,还可以用在生产环境中,也可以由程序开关来控制是否进行profile。基于浏览
器的性能分析用户界面能更容易查看,或是与同行们分享成果。也能绘制调用关系图。在数据收集阶段,它记录调用次数的追踪和包容性的指标弧在动态callgraph的一个程序。
它独有的数据计算的报告/后处理阶段。在数据收集时,XHProfd通过检测循环来处理递归的函数调用,并通过给递归调用中每个深度的调用一个有用的命名来避开死循环。
XHProf的轻量级性质和汇聚功能,使得它非常适合用于收集“生产环境”的性能统计数据的统计。
1. 安装XHProf
复制代码 代码如下:
wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar zxf xhprof-0.9.2.tgz
cd xhprof-0.9.2
cp -r xhprof_html xhprof_lib
cd extension
phpize
./configure
make
make install
2. 配置 php.ini 文件
复制代码 代码如下:
[xhprof]
extension=xhprof.so
;
; directory used by default implementation of the iXHProfRuns
; interface (namely, the XHProfRuns_Default class) for storing
; XHProf runs.
; 记得
xhprof.output_dir=
重启服务让修改生效,现在就可以使用XHProf了,不过为了显示效果更炫,最好继续安装Graphviz。
3. 安装Graphviz
复制代码 代码如下:
wget http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.26.3.tar.gz
tar zxf graphviz-2.26.3.tar.gz
cd graphviz-2.26.3
./configure
make
make install
安装完成后,会生成/usr/local/bin/dot文件,你应该确保路径在PATH环境变量里,以便XHProf能找到它。
4. 应用XHProf
复制代码 代码如下:
xhprof_enable();//打开xhprof
/******程序逻辑 Start******/
function test1(){
sleep(3);
return;
}
function test2(){
test1();
}
function test3(){
test2();
}
function p(){
echo '
xhprof test
';}
p();
test3();
/******程序逻辑 End******/
$xhprof_data = xhprof_disable();//关闭xhprof
//保存xhprof数据
include_once '../xhprof_lib/utils/xhprof_lib.php';
include_once '../xhprof_lib/utils/xhprof_runs.php';
$xhprof_runs = new XHProfRuns_Default();
$xhprof_source = 'xhprof_test';
$run_id = $xhprof_runs->save_run($xhprof_data, $xhprof_source);
$report_url = 'http://xhprof.rebill.info/index.php?run='.$run_id.'&source='.$xhprof_source;
echo '
';
echo 'view the performance report:'.$report_url.'';
如此一来,会在上面设定的xhprof.output_dir目录里生成名字类似4c236583ef490.xhprof_test的数据文件,可以很方便的通过Web方式浏览效果:
http://xhprof.rebill.info/index.php?run=4c236583ef490&source=xhprof_test
目前显示的是表格形式的显示,点击页面上的[View Full Callgraph],就能看到精美的图片显示了。
在线测试体验地址:http://xhprof.rebill.info/test.php

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