☰

Nginx 无法服务超过 40 个并发用户

tag-icon • tag-icon nginx performance timeout users
Nginx 无法服务超过 40 个并发用户

我正在使用以下工具测试我的 Nginx Web 服务器（使用 CentminMod 配置）https://www.blitz.io/当连接用户数达到40个左右时，服务器就会返回超时。

我不明白为什么！这是 Nginx，不是 Apache！有人能帮我吗？

这是我的 nginx.conf：

user nginx nginx;
worker_processes 1;
worker_priority -10;

worker_rlimit_nofile 260000;
timer_resolution 100ms;

error_log         logs/error.log;

pid               logs/nginx.pid;
pcre_jit on;

events {
    worker_connections  2048;
    accept_mutex on;
    accept_mutex_delay 100ms;
    use epoll;
    #multi_accept on;
}

http {
    include /usr/local/nginx/conf/pagespeedadmin.conf;
    include /usr/local/nginx/conf/fastcgi_param_https_map.conf;

    log_format      main    '$remote_addr - $remote_user [$time_local] $request '
    '"$status" $body_bytes_sent "$http_referer" '
    '"$http_user_agent" "$http_x_forwarded_for" "$gzip_ratio"'
    ' "$connection" "$connection_requests" "$request_time"';

    access_log logs/access.log combined buffer=32k;

    index  index.php index.html index.htm;
    include       mime.types;
    default_type  application/octet-stream;
    charset utf-8;

    sendfile on;
    #sendfile_max_chunk 1m;
    tcp_nopush  on;
    tcp_nodelay off;
    server_tokens off;
    server_name_in_redirect off;

    keepalive_timeout  10;
    keepalive_requests 100;
    lingering_time 20s;
    lingering_timeout 5s;
    keepalive_disable msie6;

    gzip on;
    gzip_vary   on;
    gzip_disable "MSIE [1-6]\.";
    gzip_static on;
    gzip_min_length   1400;
    gzip_buffers      32 8k;
    gzip_http_version 1.0;
    gzip_comp_level 5;
    gzip_proxied    any;
    gzip_types text/plain text/css text/xml application/javascript application/x-javascript application/xml application/xml+rss application/ecmascript application/json image/svg+xml;

    client_body_buffer_size 256k;
    client_body_in_file_only off;
    client_body_timeout 60s;
    client_header_buffer_size 64k;
    ## how long a connection has to complete sending 
    ## it's headers for request to be processed
    client_header_timeout  20s;
    client_max_body_size 10m; 
    connection_pool_size  512;
    directio  4m;
    ignore_invalid_headers on;       
    large_client_header_buffers 8 64k;
    output_buffers   8 256k;
    postpone_output  1460;
    proxy_temp_path  /tmp/nginx_proxy/;
    request_pool_size  32k;
    reset_timedout_connection on;
    send_timeout     60s;
    types_hash_max_size 2048;
    server_names_hash_bucket_size 64;

    # for nginx proxy backends to prevent redirects to backend port 
    # port_in_redirect off;

    open_file_cache max=10000 inactive=30s;
    open_file_cache_valid 120s;
    open_file_cache_min_uses 2;
    open_file_cache_errors off;
    open_log_file_cache max=4096 inactive=30s min_uses=2;

    ## limit number of concurrency connections per ip to 16
    ## add to your server {} section the next line
    ## limit_conn limit_per_ip 16;
    ## uncomment below line allows 500K sessions
    # limit_conn_log_level error;
    #######################################
    # use limit_zone for Nginx <v1.1.7 and lower
    # limit_zone $binary_remote_addr zone=limit_per_ip:16m;
    #######################################
    # use limit_conn_zone for Nginx >v1.1.8 and higher
    # limit_conn_zone $binary_remote_addr zone=limit_per_ip:16m;
    #######################################

    include /usr/local/nginx/conf/conf.d/*.conf;
}

这是我的服务器块：

server {
    listen 8080;
    server_name beta.architetturaecosostenibile.it www.beta.architetturaecosostenibile.it;

    #pagespeed off;

    # ngx_pagespeed & ngx_pagespeed handler
    #include /usr/local/nginx/conf/pagespeed.conf;
    #include /usr/local/nginx/conf/pagespeedhandler.conf;
    #include /usr/local/nginx/conf/pagespeedstatslog.conf;

    # limit_conn limit_per_ip 16;
    # ssi  on;

    access_log /home/nginx/domains/beta.architetturaecosostenibile.it/log/access.log combined buffer=32k;
    error_log /home/nginx/domains/beta.architetturaecosostenibile.it/log/error.log debug;
    rewrite_log on;

    root /home/nginx/domains/beta.architetturaecosostenibile.it/public;

    # PageSpeed enhancements
    pagespeed EnableFilters remove_comments,collapse_whitespace;

    include /usr/local/nginx/conf/staticfiles.conf;
    include /usr/local/nginx/conf/php.conf;
    include /usr/local/nginx/conf/drop.conf;
    #include /usr/local/nginx/conf/errorpage.conf;
    }

答案1

nginx 仅仅是一个通讯工具，如果后端应用程序本身很重，它无法帮助你的系统扩展。毕竟，40 个并发用户对于任何 Web 服务器来说都是小菜一碟。

您确定该限制不在数据库/应用程序级别吗？我 100% 确定该限制存在。去找到它。

相关内容