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Use xhprof to parse in php7

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Release： 2023-02-17 16:04:02
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Use xhprof to parse in php7

Opening words

This is a pure document. If you need it in the future, you can look it up at any time and use xhprof for analysis to facilitate code testing and comparative analysis (supports php7).

Recommended tutorial: "php tutorial"

Pre-build docker virtual test environment

docker run -it -p 80:80 -v /Users/xxx/Desktop/xhprof:/data phalcon /bin/bash复制代码
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1. Install xhprof

support There are quite a lot of xhprof for php7. We use github.com/longxinH/xh... this project here.

1.1 Pull the project

git clone https://github.com/longxinH/xhprof.git复制代码
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1.2 Install the project

cd xhprof/extension/
/usr/server/php7/bin/phpize
./configure --with-php-config=/usr/server/php7/bin/php-config
make && make install复制代码
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1.3 Add xhprof.so expansion

After execution, we need to introduce this so file Go to the php.ini configuration

View the php.ini file path

/usr/server/php7/bin/php --ini

Configuration File (php.ini) Path: /usr/server/php7/etc
Loaded Configuration File:         /usr/server/php7/etc/php.ini
Scan for additional .ini files in: /usr/server/php7/etc/php
Additional .ini files parsed:      (none)复制代码
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Edit /usr/server/php7/etc/php.ini

[Xhprof]
extension=xhprof.so
xhprof.output_dir=/data/logs复制代码
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Restart php-fpm that is Can.

2. The process of building a case using xhprof

We embed the following code in front of the logic to be monitored

\xhprof_enable();
......$order = new OrderAdepter();$result = $order->getUserOrderByOrderNo(123);
......$xhprof_data = \xhprof_disable();
print_r($xhprof_data);复制代码
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output:

Use xhprof to parse in php7

We found that two functions in the xhprof extension were called, and the meaning of the output value

ct 表示 当前这个函数调用的次数,此案例都是1次
wt 表示 函数执行时间的耗时，单位为微秒复制代码
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After seeing this, we found that the information we obtained was not very much , for example, we often also care about the occupied memory, cpu and other indicators.

\xhprof_enable(
    XHPROF_FLAGS_MEMORY  
    +XHPROF_FLAGS_CPU
    +XHPROF_FLAGS_NO_BUILTINS
);复制代码
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output:

Use xhprof to parse in php7
  1. # #XHPROF_FLAGS_MEMORY Statistical memory usage

  2. XHPROF_FLAGS_CPU Statistics cpu usage

  3. XHPROF_FLAGS_NO_BUILTINS The built-in functions are not counted. In this output, you can see that the functions in our expansion have been ignored.

We found that there are two output fields for counting memory usage, mu and pmu. mu represents the memory used (bytes), pmu represents the peak memory used (bytes)

3. Chart xhprof

Of course, we still hope that the form of the chart can be more intuitive Observe the performance bottleneck, let's see how to use it.

3.1 At this time we need to use the xhprof_lib library

When we download the xhprof source code, the directory already contains

\xhprof_enable(XHPROF_FLAGS_MEMORY + XHPROF_FLAGS_CPU+XHPROF_FLAGS_NO_BUILTINS);

......$order = new OrderAdepter();$result = $order->getUserOrderByOrderNo(123);
......$xhprof_data = \xhprof_disable();

include_once  '/data/xhprof-master/xhprof_lib/utils/xhprof_lib.php';
include_once  '/data/xhprof-master/xhprof_lib/utils/xhprof_runs.php';$xhprof_runs = new \XHProfRuns_Default();$run_id = $xhprof_runs->save_run($xhprof_data, 'your_project');echo $run_id; //output 5cbf25e21fe9b复制代码
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Execution prints out a string, which we can understand as a file identifier. We found that the save_run method was executed, so where was it saved?

Do you remember another configuration when we introduced the xhprof.so extension?

Yes, in xhprof.output_dir Under the configured path (you need to create the directory manually)

Use xhprof to parse in php7
If you are interested, you can open it and take a look. Some of the things we analyzed are stored in it. Serialized object information.

3.2 Configure a separate service to access our analysis results

Use xhprof to parse in php7
We point to our The xhprof_html directory in the xhprof project

Use xhprof to parse in php7
I believe you now understand the role of our run_id and the project in save_run

The top part is an overview of the requested interface indicators, and the following is the specific execution of each calling function.

Field nameMeaning##Calls##Incl. Wall TimeThe call includes all the time spent by the sub-function, calculated in microsecondsExcl. Wall TimeThe time it takes to execute the function itself, excluding subtree execution time, calculated in microsecondsIncl. CPUIncludes calls All CPU time spent by sub-functionsExcl. CPUCPU time spent on function execution itself, excluding subtree execution time, calculated in microsecondsIncl.MemUseIncludes the memory used by sub-function execution, in bytesExcl.MemUseThe memory of the function execution itself, calculated in bytes The peak value of Incl.MemUseExcl.MemUse’s peak
Call Number of times
##Incl.PeakMemUse
Excl. PeakMemUse

其余后面的 % 结尾均为对应的占比

3.3 [View Full Callgraph]

如果查看调用流程需要安装 graphviz 图形库. 这里我们推荐手动安装 graphviz 2.24.0 这个版本(亲自踩坑,2.40不支持)

 yum -y install libtool-ltdl-develcd /data/graphviz-2.24.0

./configure
make
make install复制代码
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Use xhprof to parse in php7

红色部分和黄色部分重点关心下,如果感觉只想分析某个流程, 可以点击到某个方法里面再点击【View Full Callgraph】查看图表

4. 问题点

我们在上面使用xhprof的时候发现了强依赖, 在代码中引入了 xhprof 安装包里的几个类.

include_once  '/data/xhprof-master/xhprof_lib/utils/xhprof_lib.php';
include_once  '/data/xhprof-master/xhprof_lib/utils/xhprof_runs.php';复制代码
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这里我们可以使用composer包引用来实现相同功能, 这里推荐引入 pbweb/xhprof 包。

5. 结束

希望大家工作开心

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