


PHP performance analysis tool, PHP performance analysis_PHP tutorial
php performance analysis tool, php performance analysis
1. Foreword
It’s better to record the useful things, which will also facilitate future inquiries; this time, record the installation and use of xhprof;
It can also be used in a production environment, and it can also be controlled by a program switch whether to profile.
2. Installation
<span>1. wget http:<span>//</span><span>pecl.php.net/get/xhprof-0.9.3.tgz </span> 2. tar zxf xhprof-0.9.3.<span>tgz </span>3. cd xhprof-0.9.3/<span>extension </span>4. /usr/bin/<span>phpize (php版本安装后生成的phpize文件,可根据phpinfo查看,所以php版本不同,生成的phpize也不同,此步骤主要生成configure文件) </span>5. ./configure –with-php-config=/usr/bin/php-<span>config (php</span>-<span>config的路径,也是php安装后生成的文件) </span>6.<span> make </span>7.<span> sudo make install (会自动将生成的扩展文件拷贝到扩展目录中</span>/usr/lib64/php/<span>modules) 当然具体的php文件的目录,每个人不尽相同,可根据phpinfo查询</span></span>3. php.ini configuration
<span><span>1</span> <span>根据phpinfo找到 extension_dir的目录 </span><span>2</span> (/etc/php.d/xhprof.<span>ini) </span><span>3</span> <span>4</span> <span>添加一下内容: </span><span>5</span> <span>6</span> extension=xhprof.<span>so </span><span>7</span> xhprof.output_dir=/tmp/xhprof <span>//</span><span>xhprof的分析日志</span></span>4. Restart the service
<span><span>1</span> sudo /etc/init.d/<span>http restart </span><span>2</span> <span>3</span> 查看phpinfo是否安装成功</span>5. How to use
<span><span> 1</span> <span>开头: </span><span> 2</span> xhprof_enable(); <span>//</span><span>开启监测 </span><span> 3</span> <span>//xhprof_enable(XHPROF_FLAGS_NO_BUILTINS); 不记录内置的函数 </span><span> 4</span> <span>//xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY); 同时分析CPU和Mem的开销 </span><span> 5</span> <span> 6</span> <span>//要测试的代码</span> <span> 7</span> ... <span> 8</span> ... <span> 9</span> ... <span>10</span> <span>11</span> <span>结尾: </span><span>12</span> <span>$xhprof_data</span> = xhprof_disable(); <span>//</span><span>停止监测,返回运行数据</span> <span>13</span> <span>$xhprof_root</span> = '/(xhprof的虚拟主机目录)/'<span>; </span><span>14</span> <span>//</span><span>引入当初安装到xhprof虚拟主机目录中的文件</span> <span>15</span> <span>include_once</span> <span>$xhprof_root</span>."xhprof_lib/utils/xhprof_lib.php"<span>; </span><span>16</span> <span>include_once</span> <span>$xhprof_root</span>."xhprof_lib/utils/xhprof_runs.php"<span>; </span><span>17</span> <span>$xhprof_runs</span> = <span>new</span><span> XHProfRuns_Default(); </span><span>18</span> <span>$run_id</span> = <span>$xhprof_runs</span>->save_run(<span>$xhprof_data</span>, "xhprof"<span>); </span><span>19</span> <span>echo</span> '<a href="http://(xhprof的虚拟主机域名)/xhprof_html/index.php?run='.<span>$run_id</span>.'&source=xhprof" target="_blank">xhprof统计</a>'<span>; </span></span>The above code uses the method of setting up a virtual host for xhprof.
Copy the xhprof_html and xhprof_lib folders in the source package to the virtual directory you created
cp -r xhprof_html xhprof_lib /xxx/xhprof/ (The purpose here is to establish a data analysis directory, which can be configured as a virtual host for access)
After running, click the returned xhprof statistics link for statistics.
6. Attention issues and explanations of terms
In the displayed statistics page, click [View Full Callgraph] for graphical display (the biggest performance problems will be highlighted in red, followed by yellow);
After clicking, an error message may be prompted. Just execute the following command
<span><span>1</span> yum install -<span>y graphviz </span><span>2</span> yum install graphviz-gd</span>Explanation of terms
<span><span> 1</span> <span>Function</span><span> Name 函数名 </span><span> 2</span> <span> Calls 调用次数 </span><span> 3</span> Calls%<span> 调用百分比 </span><span> 4</span> Incl. Wall <span>Time</span><span> (microsec) 调用的包括子函数所有花费时间 以微秒算(一百万分之一秒) </span><span> 5</span> IWall%<span> 调用的包括子函数所有花费时间的百分比 </span><span> 6</span> Excl. Wall <span>Time</span> (microsec) 函数执行本身花费的时间,不包括子树执行时间,<span>以微秒算(一百万分之一秒) </span><span> 7</span> EWall%<span> 函数执行本身花费的时间的百分比,不包括子树执行时间 </span><span> 8</span> Incl. CPU(microsecs) 调用的包括子函数所有花费的cpu时间。减Incl.<span> Wall Time即为等待cpu的时间 </span><span> 9</span> 减Excl.<span> Wall Time即为等待cpu的时间 </span><span>10</span> ICpu% Incl.<span> CPU(microsecs)的百分比 </span><span>11</span> Excl. CPU(microsec) 函数执行本身花费的cpu时间,不包括子树执行时间,<span>以微秒算(一百万分之一秒)。 </span><span>12</span> ECPU% Excl.<span> CPU(microsec)的百分比 </span><span>13</span> Incl.<span>MemUse(bytes) 包括子函数执行使用的内存。 </span><span>14</span> IMemUse% Incl.<span>MemUse(bytes)的百分比 </span><span>15</span> Excl.MemUse(bytes) 函数执行本身内存,<span>以字节算 </span><span>16</span> EMemUse% Excl.<span>MemUse(bytes)的百分比 </span><span>17</span> Incl.PeakMemUse(bytes) Incl.<span>MemUse的峰值 </span><span>18</span> IPeakMemUse% Incl.<span>PeakMemUse(bytes) 的峰值百分比 </span><span>19</span> Excl.PeakMemUse(bytes) Excl.<span>MemUse的峰值 </span><span>20</span> EPeakMemUse% EMemUse% 峰值百分比</span>7. Reference materials
<span>1</span> <span> http://blog.csdn.net/maitiandaozi/article/details/8896293 </span><span>2</span> <span> http://www.cnblogs.com/wangtao_20/archive/2011/03/16/1986508.html </span><span>3</span> <span> http://www.cnblogs.com/wangtao_20/archive/2013/09/13/3320497.html </span><span>4</span> <span>5</span> <span> http://avnpc.com/pages/profiler-php-performance-online-by-xhprof </span><span>6</span> <span> http://www.ituring.com.cn/article/132392 </span><span>7</span> http://www.ituring.com.cn/article/133062?utm_source=tuicool
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PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

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