树莓派nginx优化

主要参考文献是这里:Tweaked.io—making your servers fly

1. 首先查看可用cpu有几个核: grep ^processor /proc/cpuinfo | wc -l, 输出表示我的pi 2是四核的, 哇咔咔~~
2. sudo vim /etc/nginx/nginx.conf 对比链接的代码发现树莓派的rasbian源已经做了相应的优化, 例如工作数设置为4, 开启gzip等
3. 开启缓存: 在你的server下, 例如sudo vim /etc/nginx/sites-available/default, 添加
   
   location ~* .(jpg|jpeg|gif|png|css|js|ico|xml)$ { access_log off; log_not_found off; expires 30d; }

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   location ~* .(jpg|jpeg|gif|png|css|js|ico|xml)$ {      access_log        off;      log_not_found     off;      expires           30d; }

1. php设置, 继续添加
   
   # execute all .php files via php-fpm location ~ .php$ { # connect to a unix domain-socket: fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php;<code>fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param SCRIPT_NAME $fastcgi_script_name;      fastcgi_buffer_size 128k;      fastcgi_buffers 256 16k;      fastcgi_busy_buffers_size 256k;      fastcgi_temp_file_write_size 256k;      # This file is present on Debian systems..      include fastcgi_params; }

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   # execute all .php files via php-fpm     location ~ .php$ {         # connect to a unix domain-socket:         fastcgi_pass   unix:/var/run/php5-fpm.sock;           fastcgi_index  index.php;<code>fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;           fastcgi_param   SCRIPT_NAME        $fastcgi_script_name;             fastcgi_buffer_size 128k;           fastcgi_buffers 256 16k;           fastcgi_busy_buffers_size 256k;           fastcgi_temp_file_write_size 256k;             # This file is present on Debian systems..           include fastcgi_params; }

2. 遇到问题自动重启: sudo vim /etc/php5/fpm/php-fpm.conf: 找到对应的地方, 修改成:
   
   emergency_restart_threshold =10 emergency_restart_interval =1m process_control_timeout =10s

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   emergency_restart_threshold =10 emergency_restart_interval =1m process_control_timeout =10s

3. 最后, 重启nginx以及php5-fpm:sudo service nginx restart, sudo service php5-fpm restart
4. 看看战绩, 测试下速度:
   index.php 平均耗时:2874ms, 最短耗时: 166ms
   wordpress/index.php 平均耗时:2484ms,最短耗时: 141ms
   对比dns, 平均耗时:1752ms, 最短耗时: 87ms
   因此总体来说, 不考虑dns延迟的话, 还是可以接受的?

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