Low performance if using Nginx as a reverse proxy

Workerman http i get 48k requests per second.

Nginx as a reverse proxy for Workerman i only get 31k requests per second.

Am i doing anything wrong?

```

***nginx.conf***

user root;
error_log stderr error;
worker_processes auto;

events {
use epoll;
worker_connections 16384;
multi_accept on;
}

http {
access_log off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
etag off;
keepalive_requests 10000000;
upstream app {
server unix:/dev/shm/app.sock max_fails=0;
}
server {
listen 0.0.0.0:8080 default_server;
location / {
proxy_pass http://app;
proxy_ignore_client_abort on;
}
}
}

***app.php***

protocol = "Workerman\\Protocols\\Http";

# comment $http_worker = new Worker("http://0.0.0.0:8081");

$http_worker->count = 6;

$http_worker->onMessage = function ($connection, $request) {

$connection->send("Hello World");
};

Worker::runAll();

```