解决访问本地 docker 项目慢的问题

ligkwww 的个人博客 / 1659 / 25 / 创建于 4年前 / 更新于 3年前

前言

以前在本地开发都是直接搭建nginx+php+mysql，后来因php版本问题，将其单独打包成docker应用来使用，但是在使用过程中发现访问项目时特别慢，几乎每次都是4-6秒，甚至有时会超过10秒，开始以为是项目本身代码的问题，调试发现如果仅在index.php直接输出的话还是非常快的，说明这个消耗是在框架内部产生的，所以按照启动顺序逐步排查，发现代码本身的解析速度几乎不受影响，只是在某些需要引入其他文件(路由文件)的地方会特别慢，文件越大所需时间越长，不想在本地开发时浪费太多的时间去等待，所以想查看一下是哪块引起的原因，该怎么解决。

解决方案:

如果觉得太麻烦不想看解决过程的话可以直接看本次解决方案:

在docker挂载宿主机目录时加入cached参数，作用是把主机文件缓存至容器中，容器会使用内部的缓存而不是宿主机上的文件
例如： docker run -d -p 9000:9000 –name php-dubbo-cache -v /Users/admin/Site:/data/:cached php-fpm

环境说明

操作系统:mac 10.14.5
PHP框架: Laravel 5.7
docker资源分配： cpu(2) memory(2GB) swap(1GB)

因代码一模一样，所以想从环境本身的原因找下问题，暂时没有开启框架本身的路由缓存和配置缓存。本来想使用xdebug的性能分析，但是返回504，后来将nginx的超时时间加长后返回502，暂时没有找到原因，故手动跟踪代码。

测试代码

为本次分析只想查看框架启动耗时，所以不包含任何业务逻辑，仅仅到路由层就结束。
Route::get('docker',function(){
    execTime('到达路由文件的时间');
});

结果(完整查询过程在最后)

本次访问用时大概6秒左右，从分析过程中发现有两处比较明显的耗时和文件处理有关，所以猜测是不是和docker的目录有关系，然后去查找相关资料，有说在挂载目录处加入cached参数，试了下加上后效果有明显的提升,文档上说可能会有写入延迟，但我试了下几乎没感觉出来，可能在机器负载比较高的时候会有体现吧。

加cache之前大概用时6秒，加cache之后平均速度基本在100毫秒左右。

1.引入自定义的路由文件: App\Providers\RouteServiceProvider.php->map()

2.解析路由至指定代码处: Illuminate\Foundation\Http\Kernel.php->dispatchToRouter

完整过程

没有在所有方法中打印耗时，仅在我认为可能会有问题的地方打印

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