调整pm.start_servers，或pm.min/max_spare_servers

Question

由于即将到来的事件，我们期待高流量(大约2000同时用户)在我们的Magento2供电的电子商务网站运行在Ubuntu，NGINX和PHP7.1-fpm几个星期。由于我们的目录是相当大的，我们已经升级了我们的数码海洋液滴的最高规格是192 GB的Ram和32个vCPU。

该网站运行迅速，然而，一旦我们接触到800+用户，它开始变得相当缓慢，过了一段时间，它将以显示502个坏网关错误而结束，这是我们在这个临时事件中实在负担不起的。

我们最近的错误现在是pm.start_servers，或者是与pm.min/max_ are _servers相关的，这些错误是：

    [16-Mar-2020 21:50:35] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle$
    [16-Mar-2020 21:50:36] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idl$

我们已经尝试过几种设置，但是似乎没有什么是可靠的。以下是一些设置：

/etc/php/7.1/fpm/info.gov.hk.d/www.conf：

    pm = dynamic
    pm.start_servers = 20
    pm.min_spare_servers = 20
    pm.max_spare_servers = 50
    ;pm.process_idle_timeout = 10s;
    pm.max_requests = 0

所以，现在我们正在寻找一个解决方案或者一种方法来精确地计算这些数据？是否有任何其他的考虑因素或设置我们应该改变？

Here我们的Magentonginx.conf：

    root $MAGE_ROOT/pub;
    index index.php;
    autoindex off;
    charset UTF-8;
    error_page 404 403 = /errors/404.php;
    #add_header "X-UA-Compatible" "IE=Edge";

    # PHP entry point for setup application
    location ~* ^/setup($|/) {
        root $MAGE_ROOT;
        location ~ ^/setup/index.php {
            fastcgi_pass   fastcgi_backend;

            fastcgi_param  PHP_FLAG  "session.auto_start=off \n suhosin.session.cryptua=off";
            fastcgi_param  PHP_VALUE "memory_limit=2048M \n max_execution_time=18000";
            fastcgi_read_timeout 600s;
            fastcgi_connect_timeout 600s;
        fastcgi_buffers 256 16k;
        fastcgi_max_temp_file_size 0;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }

        location ~ ^/setup/(?!pub/). {
            deny all;
        }

        location ~ ^/setup/pub/ {
            add_header X-Frame-Options "SAMEORIGIN";
        }
    }

    # PHP entry point for update application
    location ~* ^/update($|/) {
        root $MAGE_ROOT;

        location ~ ^/update/index.php {
            fastcgi_split_path_info ^(/update/index.php)(/.+)$;
            fastcgi_pass   fastcgi_backend;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO        $fastcgi_path_info;
            include        fastcgi_params;
        }

        # Deny everything but index.php
        location ~ ^/update/(?!pub/). {
            deny all;
        }

        location ~ ^/update/pub/ {
            add_header X-Frame-Options "SAMEORIGIN";
        }
    }

    location / {
        try_files $uri $uri/ /index.php$is_args$args;
    }

    location /pub/ {
        location ~ ^/pub/media/(downloadable|customer|import|theme_customization/.*\.xml) {
            deny all;
        }
        alias $MAGE_ROOT/pub/;
        add_header X-Frame-Options "SAMEORIGIN";
    }

    location /static/ {
        # Uncomment the following line in production mode
        # expires max;

        # Remove signature of the static files that is used to overcome the browser cache
        location ~ ^/static/version {
            rewrite ^/static/(version[^/]+/)?(.*)$ /static/$2 last;
        }

        location ~* \.(ico|jpg|jpeg|png|gif|svg|js|css|swf|eot|ttf|otf|woff|woff2)$ {
           # add_header Cache-Control "public";
            add_header X-Frame-Options "SAMEORIGIN";
            expires +1y;

            if (!-f $request_filename) {
                rewrite ^/static/?(.*)$ /static.php?resource=$1 last;
            }
        }
        location ~* \.(zip|gz|gzip|bz2|csv|xml)$ {
           # add_header Cache-Control "no-store";
            add_header X-Frame-Options "SAMEORIGIN";
            expires    off;

            if (!-f $request_filename) {
               rewrite ^/static/?(.*)$ /static.php?resource=$1 last;
            }
        }
        if (!-f $request_filename) {
            rewrite ^/static/?(.*)$ /static.php?resource=$1 last;
        }
        add_header X-Frame-Options "SAMEORIGIN";
    }

    location /media/ {
        try_files $uri $uri/ /get.php$is_args$args;

        location ~ ^/media/theme_customization/.*\.xml {
            deny all;
        }

        location ~* \.(ico|jpg|jpeg|png|gif|svg|js|css|swf|eot|ttf|otf|woff|woff2)$ {
           # add_header Cache-Control "public";
            add_header X-Frame-Options "SAMEORIGIN";
            expires +1y;
            try_files $uri $uri/ /get.php$is_args$args;
        }
        location ~* \.(zip|gz|gzip|bz2|csv|xml)$ {
           # add_header Cache-Control "no-store";
            add_header X-Frame-Options "SAMEORIGIN";
            expires    off;
            try_files $uri $uri/ /get.php$is_args$args;
        }
        add_header X-Frame-Options "SAMEORIGIN";
    }

    location /media/customer/ {
        deny all;
    }

    location /media/downloadable/ {
        deny all;
    }

    location /media/import/ {
        deny all;
    }


    location /Preread/ {

            #add_header Cache-Control "no-store";
            #add_header X-Frame-Options "SAMEORIGIN";

            root /var/www/html/;
        #try_files $uri $uri/ /Preread/index.php?$args;
        #try_files $uri $uri/ /Preread/index.php?q=$uri&$args;
            #index index.php index.html index.htm;
        #try_files $uri $uri/ /index.php?q=$uri&$args;
            try_files $uri $uri/ /index.php?q=$uri&$args;
        #try_files $uri $uri/ /get.php$is_args$args;
        #allow all;
    #   try_files $uri $uri/ /get.php$is_args$args;
    }


    # PHP entry point for main application
    location ~ (index|get|static|report|404|503|cs|davidfile|health_check)\.php$ {
        try_files $uri =404;
        fastcgi_pass   fastcgi_backend;
        fastcgi_buffers 1024 4k;

        fastcgi_param  PHP_FLAG  "session.auto_start=off \n suhosin.session.cryptua=off";
        fastcgi_param  PHP_VALUE "memory_limit=1048M \n max_execution_time=18000";
        fastcgi_read_timeout 600s;
        fastcgi_connect_timeout 600s;

        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }

    gzip on;
    gzip_disable "msie6";

    gzip_comp_level 6;
    gzip_min_length 1100;
    gzip_buffers 16 8k;
    gzip_proxied any;
    gzip_types
        text/plain
        text/css
        text/js
        text/xml
        text/javascript
        application/javascript
        application/x-javascript
        application/json
        application/xml
        application/xml+rss
        image/svg+xml;
    gzip_vary on;

    # Banned locations (only reached if the earlier PHP entry point regexes don't match)
    location ~* (\.php$|\.htaccess$|\.git) {
        deny all;
    }

如能提供专家帮助，将不胜感激。

Answer 1

运行以下命令，并尝试根据www.conf中的结果设置值

ps --no-headers -o "rss,cmd" -C php-fpm7.3 | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"Mb") }'

计算值

min_spare_servers + (max_spare_servers - min_spare_servers) / 2

示例

pm.max_children = 120
pm.start_servers = 45
pm.min_spare_servers = 10
pm.max_spare_servers = 80
pm.max_requests = 500

Answer 2

与您的问题无关，但请记住，在2020年3月，PHP7.1根本没有维护，并且包含永远不会修补的漏洞。其中一些允许黑客控制你的网络服务器..。