php fast cgi 模式有的函数执行速度很慢求助

kagomelee 2011-03-01 04:37:21

在程序中有用到 file_get_contents 这个函数来抓取别的网页的数据，执行速度就超级慢，但是是可以执行成功的

另外还有就是执行 smtp 发邮件的时候发信也很慢，但是也是可以发送成功的

写一个很普通的 php 循环输出一些东西会执行的很快，

服务器上有其他站点用到数据库，数据的读取也是挺快的。

查过日志日志显示
fsockopen()
smtp_sockopen_relay()
smtp_sockopen()
file_get_contents()
mail()
这些函数执行的会很慢，原因不明

服务器的负载几乎为 0 ，系统是 centos nginx fast-cgi mysql

从 phpinfo 里面看到是没有安装 curl 这个组件的。。。

情况就是这么些了，大家帮忙看看有没有什么方法处理一下

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lazyboy_wu 2011-03-07

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fsockopen()
smtp_sockopen_relay()
smtp_sockopen()
file_get_contents()
mail()

这些函数的共同之处，都是需要进行网络传输，并且是函数所在服务器a作为客户端与对方服务器b进行网络传输。

这就是牵涉到，找到对方服务器b，和对方服务器b进行连接，传输信息！

那么问题就存在3个地方

1. 寻找b时间过长，这就要看a的dns解析的时间，例如在a上执行nslooup，ping b等，看这个时间的长度

2. 连接的问题，拿fsockopen来说，执行前记录一个时间，执行后记录一个时间，验证下连接的时间，另外可以更改fsockopen的超时连接的时间，比如设定1秒，看是否有变化

3. 传输的问题，这才是我们常说的“网络问题”,这个也仅仅会发生在网络丢包严重的情况

所以不仅仅是你说的网络没有问题，网络就真的没有问题了，以上的措施你做了吗？

ImN1 2011-03-07

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瓶颈不在于运行函数的速度，而在于其他方面，get file就算是相距1米的两台机都慢，还好你没把传真也纳入，不然我真是无言了

kagomelee 2011-03-07

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执行慢的日志文件在 php-fpm.conf 文件里面设置的
具体代码为

<?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">/var/run/php-fpm.pid</value>



                Error log file

                <value name="error_log">/var/log/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>



                        <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>

                                <value name="group"></value>

                                <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">1</value>                                 



                         -->

                        </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">128</value>



                                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>



                        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">5s</value>



                        The log file for slow requests

                        <value name="slowlog">/var/log/slow.log</value>



                        Set open file desc rlimit

                        <value name="rlimit_files">51200</value>



                        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"></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">4096</value>



                        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>



                        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>