我决定将我的 OP 从 Litespeed 更改为 Nginx，因为我阅读了很多关于 Nginx 将花费的低资源的信息。
我正在运行一个有 500 个在线用户的 Wordpress 网站
好的，谢谢你们的帮助:) 我编辑了一些东西。
我也有一些问题：
我必须删除吗？下午之前。设置？我删除了它什么配置重要？我有两个快速 cgi，一个在 /etc/php5/fpm 中，名为 php-fpm.conf ，另一个在 /etc/php5/fpm/pool.d 中，名为 www.conf ？
我一夜之间尝试了新配置，当我醒来时，我已经得到了一个空白页面。最佳：
top - 13:55:27 up 1 day, 19:28, 2 users, load average: 0.18, 0.36, 0.19
Tasks: 84 total, 1 running, 83 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.2%us, 0.0%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 3974264k total, 1051360k used, 2922904k free, 162380k buffers
Swap: 3998700k total, 0k used, 3998700k free, 609220k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1857 www-data 20 0 193m 55m 22m S 0 1.4 0:04.67 php5-fpm
1 root 20 0 8356 808 680 S 0 0.0 0:01.37 init
2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd
我认为 cpu 使用率现在较低，但这并不能解决崩溃问题...
我的配置现在是：php-fpm.conf
;;;;;;;;;;;;;;;;;;;;;
; FPM Configuration ;
;;;;;;;;;;;;;;;;;;;;;
; All relative paths in this configuration file are relative to PHP's install
; prefix (/usr). This prefix can be dynamicaly changed by using the
; '-p' argument from the command line.
; Include one or more files. If glob(3) exists, it is used to include a bunch of
; files from a glob(3) pattern. This directive can be used everywhere in the
; file.
; Relative path can also be used. They will be prefixed by:
; - the global prefix if it's been set (-p arguement)
; - /usr otherwise
;include=/etc/php5/fpm/*.conf
;;;;;;;;;;;;;;;;;;
; Global Options ;
;;;;;;;;;;;;;;;;;;
[global]
; Pid file
; Note: the default prefix is /var
; Default Value: none
pid = /var/run/php5-fpm.pid
; Error log file
; If it's set to "syslog", log is sent to syslogd instead of being written
; in a local file.
; Note: the default prefix is /var
; Default Value: log/php-fpm.log
error_log = /var/log/php5-fpm.log
; syslog_facility is used to specify what type of program is logging the
; message. This lets syslogd specify that messages from different facilities
; will be handled differently.
; See syslog(3) for possible values (ex daemon equiv LOG_DAEMON)
; Default Value: daemon
;syslog.facility = daemon
; syslog_ident is prepended to every message. If you have multiple FPM
; instances running on the same server, you can change the default value
; which must suit common needs.
; Default Value: php-fpm
;syslog.ident = php-fpm
; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
;log_level = notice
; If this number of child processes exit with SIGSEGV or SIGBUS within the time
; interval set by emergency_restart_interval then FPM will restart. A value
; of '0' means 'Off'.
; Default Value: 0
emergency_restart_threshold = 1
; Interval of time used by emergency_restart_interval to determine when
; a graceful restart will be initiated. This can be useful to work around
; accidental corruptions in an accelerator's shared memory.
; Available Units: s(econds), m(inutes), h(ours), or d(ays)
; Default Unit: seconds
; Default Value: 0
emergency_restart_interval = 1s
; Time limit for child processes to wait for a reaction on signals from master.
; Available units: s(econds), m(inutes), h(ours), or d(ays)
; Default Unit: seconds
; Default Value: 0
process_control_timeout = 10s
; The maximum number of processes FPM will fork. This has been design to control
; the global number of processes when using dynamic PM within a lot of pools.
; Use it with caution.
; Note: A value of 0 indicates no limit
; Default Value: 0
process.max = 150
; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging.
; Default Value: yes
;daemonize = yes
; Set open file descriptor rlimit for the master process.
; Default Value: system defined value
rlimit_files = 1024
; Set max core size rlimit for the master process.
; Possible Values: 'unlimited' or an integer greater or equal to 0
; Default Value: system defined value
;rlimit_core = 0
; Specify the event mechanism FPM will use. The following is available:
; - select (any POSIX os)
; - poll (any POSIX os)
; - epoll (linux >= 2.5.44)
; - kqueue (FreeBSD >= 4.1, OpenBSD >= 2.9, NetBSD >= 2.0)
; - /dev/poll (Solaris >= 7)
; - port (Solaris >= 10)
; Default Value: not set (auto detection)
; events.mechanism = epoll
;;;;;;;;;;;;;;;;;;;;
; Pool Definitions ;
;;;;;;;;;;;;;;;;;;;;
; Multiple pools of child processes may be started with different listening
; ports and different management options. The name of the pool will be
; used in logs and stats. There is no limitation on the number of pools which
; FPM can handle. Your system will tell you anyway :)
; To configure the pools it is recommended to have one .conf file per
; pool in the following directory:
include=/etc/php5/fpm/pool.d/*.conf
request_terminate_timeout = 30s
pm.max_children = 25
; The number of child processes created on startup.
; Note: Used only when pm is set to 'dynamic'
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 5
; The desired minimum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.min_spare_servers = 2
; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers = 5
; The number of seconds after which an idle process will be killed.
; Note: Used only when pm is set to 'ondemand'
; Default Value: 10s
pm.process_idle_timeout = 10s;
fastcgi_params:
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_FILENAME $request_filename;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
#fastcgi_param HTTPS $https;
# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param REDIRECT_STATUS 200;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;
nginx配置：
user www-data;
worker_processes 2;
pid /var/run/nginx.pid;
events {
worker_connections 500;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 40;
types_hash_max_size 2048;
server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
# access_log /var/log/nginx/access.log;
# error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 9;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css application/json application/x-javascript text/$
配置文件
; Start a new pool named 'www'.
; the variable $pool can we used in any directive and will be replaced by the
; pool name ('www' here)
[www]
user = www-data
group = www-data
pm = dynamic
pm.max_children = 25
pm.start_servers = 5
pm.min_spare_servers = 2
pm.max_spare_servers = 5
pm.process_idle_timeout = 10s;
pm.max_requests = 100
request_terminate_timeout = 120s
Mashine：双核 4GB 内存
Dad*_*ada 10
目前尚不清楚您是否正在使用任何操作码缓存器，例如APC. 首先，启用它。调整其内存以避免碎片化。此外，使用套接字，而不是来自nginxto 的http 连接php5-fpm，并将该套接字放在/dev/shm. 在 nginx 中，使用fastcgi_pass unix:/dev/shm/php5-fpm.sock;，并相应地更改 php5-fpm 的配置。
尝试降低pm.max_children到更现实的值，例如 30-40-50-60，然后使用free -m. 查看客户端是否收到任何 502/504 错误。相应地降低pm.start_servers, min 和 max_spare (15, 5, 25)。
如果有很多匿名用户，请考虑使用 wordpress 之类的任何缓存插件WP-FFPC，WP Super Cache或类似的。
如果您在 nginx 中启用了 gzipping，请禁用它。
也许您需要在 nginx 中进行调整fastcgi_buffer_size和fastcgi_buffers选项。
检查您是否在 Mysql 上启用了查询缓存并且足够。
munin在站点上安装监控系统，以检查负载/内存消耗/延迟等。
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