php-fpm.conf配置说明（着重点要修改和优化的地方）

 <?xml version="1.0" ?><configuration>	All relative paths in this config are relative to php's install prefix	<section name="global_options">		Pid file		<value name="pid_file">/usr/local/php/logs/php-fpm.pid</value>		Error log file		<value name="error_log">/usr/local/php/logs/php-fpm.log</value>		Log level		<value name="log_level">notice</value>		When this amount of php processes exited with SIGSEGV or SIGBUS ...		<value name="emergency_restart_threshold">10</value>		... in a less than this interval of time, a graceful restart will be initiated.		Useful to work around accidental curruptions in accelerator's shared memory.		<value name="emergency_restart_interval">1m</value>		Time limit on waiting child's reaction on signals from master		<value name="process_control_timeout">5s</value>		Set to 'no' to debug fpm		<value name="daemonize">yes</value>	</section>	<workers>		<section name="pool">			Name of pool. Used in logs and stats.			<value name="name">default</value>			Address to accept fastcgi requests on.			Valid syntax is 'ip.ad.re.ss:port' or just 'port' or '/path/to/unix/socket'			<value name="listen_address">127.0.0.1:9000</value> <!--默认ip和端口-->			<value name="listen_options">				Set listen(2) backlog				<value name="backlog">-1</value>				Set permissions for unix socket, if one used.				In Linux read/write permissions must be set in order to allow connections from web server.				Many BSD-derrived systems allow connections regardless of permissions.				<value name="owner"></value>  <!-与nginx同名用户名--->				<value name="group"></value>   <!-与nginx同名工作组--->				<value name="mode">0666</value>			</value>			Additional php.ini defines, specific to this pool of workers.			<value name="php_defines">		<!--		<value name="sendmail_path">/usr/sbin/sendmail -t -i</value>		-->		<!--		<value name="display_errors">0</value>	 ##错误不显示0，显示为1							-->			</value>			Unix user of processes		<!--	<value name="user">nobody</value>				-->			Unix group of processes		<!--	<value name="group">nobody</value>		-->			Process manager settings			<value name="pm">				Sets style of controling worker process count.				Valid values are 'static' and 'apache-like'				<value name="style">static</value>				Sets the limit on the number of simultaneous requests that will be served.				Equivalent to Apache MaxClients directive.				Equivalent to PHP_FCGI_CHILDREN environment in original php.fcgi				Used with any pm_style.				<value name="max_children">5</value> <!--fastcgi 进程数默认5个，内存小于2g可设20个进程，大于4g可设200个进程，注意这不是唯一-->				Settings group for 'apache-like' pm style				<value name="apache_like">					Sets the number of server processes created on startup.					Used only when 'apache-like' pm_style is selected					<value name="StartServers">20</value>					Sets the desired minimum number of idle server processes.					Used only when 'apache-like' pm_style is selected					<value name="MinSpareServers">5</value>					Sets the desired maximum number of idle server processes.					Used only when 'apache-like' pm_style is selected					<value name="MaxSpareServers">35</value>				</value>			</value>			The timeout (in seconds) for serving a single request after which the worker process will be terminated			Should be used when 'max_execution_time' ini option does not stop script execution for some reason			'0s' means 'off'			<value name="request_terminate_timeout">0s</value><!-- fastcgi脚本 默认为0秒说明无限进行-->			The timeout (in seconds) for serving of single request after which a php backtrace will be dumped to slow.log file			'0s' means 'off'			<value name="request_slowlog_timeout">0s</value>			The log file for slow requests			<value name="slowlog">logs/slow.log</value>			Set open file desc rlimit			<value name="rlimit_files">1024</value>                        <!--打开文件描述符文件数量限制，可以与linux内核打开文件数关联起来，如执行命令：ulimit -Hsn 65536 -->			Set max core size rlimit			<value name="rlimit_core">0</value>			Chroot to this directory at the start, absolute path			<value name="chroot"></value>			Chdir to this directory at the start, absolute path			<value name="chdir"></value>			Redirect workers' stdout and stderr into main error log.			If not set, they will be redirected to /dev/null, according to FastCGI specs			<value name="catch_workers_output">yes</value>			How much requests each process should execute before respawn.			Useful to work around memory leaks in 3rd party libraries.			For endless request processing please specify 0			Equivalent to PHP_FCGI_MAX_REQUESTS			<value name="max_requests">500</value><!--请求数为500时关闭-->			Comma separated list of ipv4 addresses of FastCGI clients that allowed to connect.			Equivalent to FCGI_WEB_SERVER_ADDRS environment in original php.fcgi (5.2.2+)			Makes sense only with AF_INET listening socket.			<value name="allowed_clients">127.0.0.1</value> <!--访问fastcgi的ip,比如：nginx转过来的php请求ip为192.168.1.101那么此处必须修改为192.168.1.101-->                                     			Pass environment variables like LD_LIBRARY_PATH			All $VARIABLEs are taken from current environment			<value name="environment">				<value name="HOSTNAME">$HOSTNAME</value>				<value name="PATH">/usr/local/bin:/usr/bin:/bin</value>				<value name="TMP">/tmp</value>				<value name="TMPDIR">/tmp</value>				<value name="TEMP">/tmp</value>				<value name="OSTYPE">$OSTYPE</value>				<value name="MACHTYPE">$MACHTYPE</value>				<value name="MALLOC_CHECK_">2</value>			</value>		</section>	</workers></configuration>