我正在开发一款“激增流量”应用，该应用可以在几分钟内同时从 0 增加到 50,000 个客户端。我想请你们帮忙了解我是否做错了什么。
目前，我正在使用 loader.io 进行测试，我为这次负载测试配置的是 1 分钟内 0 到 10,000 个客户端。测试人员唯一要做的就是加载登录页面，仅此而已，甚至没有登录。页面大小为 793KB，相当于真实浏览器上的加载时间约为 400ms。
[01-Mar-2018 09:57:48] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 4244 idle, and 4607 total children
[01-Mar-2018 09:57:49] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 4216 idle, and 4615 total children
[01-Mar-2018 09:57:50] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 4211 idle, and 4631 total children
[01-Mar-2018 09:57:52] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 4179 idle, and 4663 total children
[01-Mar-2018 09:57:54] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 4181 idle, and 4695 total children
[01-Mar-2018 09:57:57] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 4244 idle, and 4727 total children
[01-Mar-2018 09:57:58] WARNING: [pool app.com] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 4412 idle, and 4759 total children
我的php-fpm配置如下：
pm.max_children 3000
pm.max_requests 200
pm dynamic
pm.start_servers 1500
pm.min_spare_servers 300
pm.max_spare_servers 1500
主机服务器规格：
AMD Opteron(tm) Processor 6344
Core Name
Abu Dhabi
# of Cores
12-Core
# of Threads
12
Operating Frequency
2.6 GHz
Hyper Transports
6.40 GT/s
L2 Cache
6 x 2MB
L3 Cache
2 x 8MB
Manufacturing Tech
32 nm
50GB RAM (I have provided this to the container), server has 64 total.
奇怪的是，即使采用了这种配置，我仍然收到“似乎很忙”的消息！
这里就是事物消亡的地方：
这里要记住的最重要的事情是，通常我们的流量很少甚至没有，但我们预计几分钟内用户数量将达到 50,000。你们能帮我解决这个错误吗？谢谢！
答案1
您需要记住，启动这些额外的工作进程需要时间，正如您在日志中看到的那样，php-fpm 一次会生成 32 个子进程。最简单的“修复”方法是将最小和最大服务器设置为相同的值，这样，您就不需要等待它们启动了。
如果可能的话，不要尝试做这样的事情，而是尝试实现缓存，因为这样总是更快。