請教關於php-fpm出現 SIGCHLD的問題

火星人 @ 2014-03-04 , reply:0
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請教關於php-fpm出現 SIGCHLD的問題

現一生產伺服器,連接數目一大就會出現如下信息。php-fpm.log裡面一直會有這樣的信息

# tail php-fpm.log
Apr 01 14:38:13.942822 fpm_children_make(), line 352: child 14084 (pool default) started
Apr 01 14:38:14.138072 fpm_got_signal(), line 48: received SIGCHLD
Apr 01 14:38:14.138153 fpm_children_bury(), line 215: child 13956 (pool default) exited with code 0 after 98.509143 seconds from start
Apr 01 14:38:14.138846 fpm_children_make(), line 352: child 14085 (pool default) started
Apr 01 14:38:16.545035 fpm_got_signal(), line 48: received SIGCHLD
Apr 01 14:38:16.545122 fpm_children_bury(), line 215: child 13958 (pool default) exited with code 0 after 96.974407 seconds from start
Apr 01 14:38:16.545674 fpm_children_make(), line 352: child 14086 (pool default) started
Apr 01 14:38:19.133433 fpm_got_signal(), line 48: received SIGCHLD
Apr 01 14:38:19.133512 fpm_children_bury(), line 215: child 13957 (pool default) exited with code 0 after 101.740640 seconds from start
Apr 01 14:38:19.134466 fpm_children_make(), line 352: child 14087 (pool default) started
#


採用的是nginx+php-cgi ,nginx 0.7.27 php-5.2.8

fcgi.conf 配置

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx;

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    $document_root$fastcgi_script_name;
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  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;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;




php-fpm.conf配置



<?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">60</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">www</value>   
  
      Unix group of processes   
        <value name="group">www</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">0s</value>   
  
      The log file for slow requests   
      <value name="slowlog">logs/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">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>   
  
      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>


連接狀態

# netstat -an | grep 80 | awk '{print $6}' | sort | uniq -c | sort -rn
  21182 ESTABLISHED
   4103 TIME_WAIT
   1571 FIN_WAIT2
   1465 FIN_WAIT1
    293 LAST_ACK
    134 SYN_RECV
     24 CONNECTED
     17 SYN_SENT
     12 CLOSING
      1 LISTEN
# netstat -an | grep 9000 | awk '{print $6}' | sort | uniq -c | sort -rn
   1522 TIME_WAIT
    270 SYN_SENT
     19 ESTABLISHED
      4 SYN_RECV
      1 LISTEN
      1 LAST_ACK
      1 FIN_WAIT1
      1 CLOSE_WAIT
#




請各位幫忙提下建議
《解決方案》

:em16: :em16: 頂
《解決方案》

<value name="max_requests">500</value>   

加大點
《解決方案》

回復 #3 myfreeke 的帖子

一樣不能夠解決問題哦
《解決方案》

原帖由 huzi1986 於 2009-4-1 20:49 發表 http://bbs3.chinaunix.net/images/common/back.gif
一樣不能夠解決問題哦
spawn-fcgi 用這個試試。我一直用,很穩定從來沒有出過問題
《解決方案》

我也碰到類似問題了
請問樓主解決沒啊~
《解決方案》

我也有這個問題,有時php無法響應
《解決方案》

我的也是,不知道怎麼弄 呢。
《解決方案》

我也是這樣的問題,有人幫忙嗎
《解決方案》

回復 9# slowhand

<value name="max_requests">1024</value>




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