解决访问本地 docker 项目慢的问题
10 / 25 / 创建于 5年前 /
ligkwww 的个人博客
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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[41] - [0] - 1564564509.8805 - BootProviders bootstrap Illuminate\Session\SessionServiceProvider start
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[41] - [0] - 1564564509.8805 - BootProviders bootstrap Illuminate\View\ViewServiceProvider start
[41] - [0] - 1564564509.8806 - BootProviders bootstrap Illuminate\View\ViewServiceProvider end
[41] - [0] - 1564564509.8806 - BootProviders bootstrap Fideloper\Proxy\TrustedProxyServiceProvider start
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[68] - [0] - 1564564509.9079 - routeServiceProvider boot end
[68] - [0] - 1564564509.9079 - BootProviders bootstrap App\Providers\RouteServiceProvider end
[68] - [0] - 1564564509.908 - BootProviders bootstrap App\Log\LogServiceProvider start
[68] - [0] - 1564564509.908 - BootProviders bootstrap App\Log\LogServiceProvider end
[68] - [0] - 1564564509.908 - BootProviders bootstrap App\Providers\ComposerServiceProvider start
[68] - [0] - 1564564509.9081 - BootProviders bootstrap App\Providers\ComposerServiceProvider end
[69] - [1] - 1564564509.9094 - BootProviders bootstrap end
[70] - [0] - 1564564509.9096 - App bootstarpWith Illuminate\Foundation\Bootstrap\BootProviders end
[70] - [0] - 1564564509.9096 - App bootstrapWith end
[70] - [0] - 1564564509.9096 - Kernel bootstrap end
[71] - [1] - 1564564509.9111 - Kernel dispatchToRouter start
[125] - [54] - 1564564509.9646 - 到达路由文件的时间
后记
可能并不是最好的解决方案，我会持续的跟进这个问题，争取找到最优解决方案。虽然解决方法很简单，但仍然受益很多，可以更深入的了解框架启动过程，从index.php到我们的业务代码都经历了哪些处理，以及分析问题的一些思路，这些是最重要的。
本作品采用《CC 协议》，转载必须注明作者和本文链接
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慢在哪里
我 windows 之前电脑也是很慢，平均 7-8 秒，换了 i7 + 16g 电脑之后，好多了，从按刷新到加载完成也就 1秒 略多吧 :grin:
要是运行队列任务，你电脑会直接发呆!~!
Win、Mac都不建议使用docker类似的虚拟化环境
你们配置的容器都这么慢？我本地windows 10环境，页面打开500ms左右，接口100ms左右，服务器上页面100ms左右，接口20ms左右，windows上会有效率问题，但是不会有这么严重，电脑配置，i5三代，8g内存，ssd
我现在升级wsl2 后一个接口里面什么逻辑也没有 时间久的接口都要5s了，快点16000MS。抓狂
现在我是再wsl2 子系统装docker 不存在慢的问题了，不要用docker 桌面版，断电的时候，桌面版 一定会文件损坏，只能重置
可以把代码挂一个tmpfs，丢内存里就快的起飞了。