\u5185\u5b58\u6d6a\u8d39\u662f\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e2d\u7684\u4e3b\u8981\u6027\u80fd\u74f6\u9888\u2014\u2014\u5373\u4fbf\u914d\u7f6e32GB\u5185\u5b58\uff0c\u82e5\u65e0\u7528\u670d\u52a1\u5360\u7528\u8d44\u6e90\uff0c\u4ecd\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u53d8\u6162\u3002\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f18\u5316\uff1a<\/p>\n

\n
• \u8bca\u65ad\u5185\u5b58\u6cc4\u6f0f\uff1a\u8fd0\u884cfree -h<\/code>\u4e0evmstat 5 10<\/code>\u8ddf\u8e2abuff\/cache<\/code>\u589e\u957f\u60c5\u51b5\uff1b\u4f7f\u7528ps aux --sort=-%mem<\/code>\u5b9a\u4f4d\u5185\u5b58\u5360\u7528\u5927\u6237\uff08\u5982\u672a\u4f7f\u7528\u7684Java\u670d\u52a1\uff09\u3002<\/li>\n
• \u505c\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\uff1a\u901a\u8fc7systemctl disable --now avahi-daemon<\/code>\u7981\u7528avahi-daemon<\/code>\u3001bluetooth<\/code>\u6216postfix<\/code>\u7b49\u975e\u5fc5\u8981\u670d\u52a1\uff08\u6b64\u7c7b\u670d\u52a1\u5bf9\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u65e0\u5b9e\u9645\u4ef7\u503c\uff09\u3002<\/li>\n
• \u4f18\u5316\u9875\u7f13\u5b58\uff1a\u5728sysctl.conf<\/code>\u4e2d\u8bbe\u7f6evm.vfs_cache_pressure = 50<\/code>\uff0c\u4f18\u5148\u4fdd\u7559\u76ee\u5f55\/\u6587\u4ef6\u7f13\u5b58\uff08\u53ef\u52a0\u5feb\u7f8e\u56fd\u7535\u5546\u4ea7\u54c1\u9875\u9762\u7684\u91cd\u590d\u8bfb\u53d6\u901f\u5ea6\uff09\u3002<\/li>\n<\/ul>\n<\/h2>\n

  4. \u78c1\u76d8I\/O\u8c03\u4f18\uff1a\u9002\u914d\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u7684SSD\/HDD\u5b58\u50a8<\/strong><\/h2>\n

  \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u901a\u5e38\u63d0\u4f9b\u6df7\u5408\u5b58\u50a8\u65b9\u6848\uff08SSD\u7528\u4e8e\u64cd\u4f5c\u7cfb\u7edf\uff0cHDD\u7528\u4e8e\u6d77\u91cf\u6570\u636e\uff09\u2014\u2014I\/O\u914d\u7f6e\u4e0d\u5f53\u4f1a\u5f15\u53d1\u6027\u80fd\u74f6\u9888\uff0c\u53ef\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8c03\u4f18\uff1a<\/p>\n

  \n
  • \u5206\u6790I\/O\u8d1f\u8f7d\uff1a\u4f7f\u7528iostat -x 5<\/code>\u68c0\u67e5%util<\/code>\uff08\u76ee\u6807\u503c\u9700\u4f4e\u4e8e80%\uff09\uff1b\u901a\u8fc7iotop -o<\/code>\u8bc6\u522b\u5360\u7528\u78c1\u76d8\u8d44\u6e90\u7684\u8fdb\u7a0b\uff08\u5982\u65e5\u5fd7\u5199\u5165\u8fdb\u7a0b\uff09\u3002<\/li>\n
  • \u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\uff1a\n
    \n
    • SSD\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u7684\u7cfb\u7edf\u76d8\uff09\uff1a\u4f7f\u7528XFS\u6587\u4ef6\u7cfb\u7edf\uff0c\u642d\u914dnoatime,nodiratime,discard<\/code>\u6302\u8f7d\u53c2\u6570\uff08\u7981\u7528\u8bbf\u95ee\u65f6\u95f4\u65e5\u5fd7\uff0c\u542f\u7528TRIM\u529f\u80fd\uff09\u3002<\/li>\n
    • HDD\uff08\u6d77\u91cf\u5b58\u50a8\u76d8\uff09\uff1a\u4f7f\u7528ext4\u6587\u4ef6\u7cfb\u7edf\uff0c\u8bbe\u7f6edata=writeback<\/code>\u4ee5\u964d\u4f4e\u975e\u5173\u952e\u6570\u636e\u7684\u65e5\u5fd7\u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n
    • RAID\u914d\u7f6e\uff1a\u8bfb\u5bc6\u96c6\u578b\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\uff08\u5982CDN\uff09\u9009\u62e9RAID 0\uff1b\u5e73\u8861\u6027\u80fd\u4e0e\u6570\u636e\u5b89\u5168\u6027\u7684\u573a\u666f\uff08\u5982\u7f8e\u56fd\u670d\u52a1\u5668\u6258\u7ba1\u6570\u636e\u5e93\uff09\u9009\u62e9RAID 5\u3002<\/li>\n<\/ul>\n<\/h2>\n

      5. \u7f51\u7edc\u8c03\u4f18\uff1a\u6539\u5584\u7f8e\u56fd\u4e0e\u5168\u7403\u7684\u7f51\u7edc\u5ef6\u8fdf<\/strong><\/h2>\n

      \u670d\u52a1\u5168\u7403\u7528\u6237\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u9762\u4e34\u72ec\u7279\u7684\u7f51\u7edc\u6311\u6218\uff08\u5982\u8de8\u5927\u897f\u6d0b\u6570\u636e\u5305\u4e22\u5931\uff09\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u4f18\u5316\uff1a<\/p>\n

      \n
      • \u76d1\u63a7\u5e26\u5bbd\u4f7f\u7528\uff1a\u4f7f\u7528iftop -i eth0<\/code>\u8ddf\u8e2a\u6d41\u91cf\u60c5\u51b5\uff0c\u68c0\u67e5\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u76841Gbps\/10Gbps\u7aef\u53e3\u662f\u5426\u9971\u548c\u3002<\/li>\n
      • \u6269\u5927\u7f51\u7edc\u7f13\u51b2\u533a\uff1a\u5728sysctl.conf<\/code>\u4e2d\u8bbe\u7f6enet.core.somaxconn = 1024<\/code>\u4e0enet.core.netdev_max_backlog = 2048<\/code>\uff0c\u5e94\u5bf9\u6d41\u91cf\u5cf0\u503c\uff08\u5982\u7f8e\u56fd\u9ed1\u8272\u661f\u671f\u4e94\u4fc3\u9500\u6d3b\u52a8\uff09\u3002<\/li>\n
      • \u63d0\u5347\u9632\u706b\u5899\u6548\u7387\uff1a\u7b80\u5316iptables<\/code>\u89c4\u5219\uff0c\u4f7f\u7528-m conntrack --ctstate ESTABLISHED,RELATED<\/code>\u907f\u514d\u91cd\u590d\u5904\u7406\u5df2\u5efa\u7acb\u8fde\u63a5\uff08\u5bf9\u5904\u740610000+\u5e76\u53d1\u7528\u6237\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u81f3\u5173\u91cd\u8981\uff09\u3002<\/li>\n<\/ul>\n<\/h2>\n

        6. \u670d\u52a1\u4e13\u9879\u8c03\u4f18\uff08Nginx\/Apache\/MySQL\uff09<\/strong><\/h2>\n

        \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u4e2d\u5e38\u7528\u4e09\u5927\u6838\u5fc3\u670d\u52a1\u2014\u2014\u9700\u6839\u636e\u670d\u52a1\u5668\u786c\u4ef6\u8c03\u6574\u5176\u914d\u7f6e\uff1a<\/p>\n

        \n
        • Nginx\uff1a\n
          \n
          • worker_processes auto;<\/code>\uff1a\u4e0eCPU\u6838\u5fc3\u6570\u5339\u914d\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u901a\u5e38\u914d\u7f6e4-32\u6838\uff09\u3002<\/li>\n
          • worker_connections 10240;<\/code>\uff1a\u63d0\u9ad8\u5e76\u53d1\u8fde\u63a5\u6570\uff08\u6839\u636e\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u7684\u5e26\u5bbd\u914d\u7f6e\u8c03\u6574\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
          • Apache\uff1a\n
            \n
            • \u4f7f\u7528mpm_event_module<\/code>\uff08\u800c\u975eprefork\u6a21\u5757\uff09\u4ee5\u652f\u6301\u9ad8\u5e76\u53d1\u3002<\/li>\n
            • \u8bbe\u7f6eMaxRequestWorkers 512<\/code>\uff08\u907f\u514d\u8fc7\u8f7d8GB\u4ee5\u4e0a\u5185\u5b58\u7684\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
            • MySQL\uff1a\n
              \n
              • innodb_buffer_pool_size = 8G<\/code>\uff1a\u5206\u914d\u5185\u5b58\u768450%-70%\uff08\u598216GB\u5185\u5b58\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u5206\u914d8GB\uff09\u3002<\/li>\n
              • query_cache_type = 0<\/code>\uff1a\u7981\u7528\u8fc7\u65f6\u7684\u67e5\u8be2\u7f13\u5b58\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u5efa\u8bae\u4f7f\u7528Redis\u66ff\u4ee3\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/h2>\n

                7. \u4ea4\u6362\u5206\u533a\uff1a\u907f\u514d\u8fc7\u65e9\u4f7f\u7528<\/strong><\/h2>\n

                \u914d\u7f6e8GB\u4ee5\u4e0a\u5185\u5b58\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u901a\u5e38\u65e0\u9700\u9891\u7e41\u4f7f\u7528\u4ea4\u6362\u5206\u533a\uff0c\u4f46\u914d\u7f6e\u4e0d\u5f53\u4ecd\u4f1a\u964d\u4f4e\u6027\u80fd\uff1a<\/p>\n

                \n
                1. \u5408\u7406\u8bbe\u7f6e\u4ea4\u6362\u5206\u533a\u5927\u5c0f\uff1a16GB\u5185\u5b58\u670d\u52a1\u5668\u914d\u7f6e8GB\u4ea4\u6362\u5206\u533a\uff0c32GB\u4ee5\u4e0a\u5185\u5b58\u670d\u52a1\u5668\u914d\u7f6e16GB\u4ea4\u6362\u5206\u533a\uff08\u907f\u514d\u4e3a\u5927\u5185\u5b58\u7f8e\u56fd\u670d\u52a1\u5668\u8bbe\u7f6e2\u500d\u5185\u5b58\u7684\u4ea4\u6362\u5206\u533a\uff09\u3002<\/li>\n
                2. \u8c03\u6574vm.swappiness<\/code>\u53c2\u6570\uff1a\u8bbe\u7f6e\u4e3a5-10\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u5e94\u4f18\u5148\u4f7f\u7528\u5185\u5b58\uff0c\u4ec5\u5f53\u5185\u5b58\u4f7f\u7528\u7387\u8fbe95%\u4ee5\u4e0a\u65f6\u542f\u7528\u4ea4\u6362\u5206\u533a\uff09\u3002<\/li>\n
                3. \u53ef\u9009\u542f\u7528zram\uff1a\u5185\u5b58\u6709\u9650\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u6258\u7ba1\u573a\u666f\uff0c\u53ef\u901a\u8fc7zramctl<\/code>\u542f\u7528\u5185\u5b58\u4e2d\u7684\u538b\u7f29\u4ea4\u6362\u5206\u533a\uff08\u51cf\u5c11\u78c1\u76d8I\/O\uff09\u3002<\/li>\n<\/ol>\n<\/h2>\n

                   8. \u65e5\u5fd7\u7ba1\u7406\uff1a\u51cf\u5c11\u78c1\u76d8\u5360\u7528<\/strong><\/h2>\n

                   \u7f8e\u56fd\u670d\u52a1\u5668\u4f1a\u751f\u6210GB\u7ea7\u65e5\u5fd7\uff08\u8bbf\u95ee\u65e5\u5fd7\u3001\u9519\u8bef\u65e5\u5fd7\uff09\u2014\u2014\u672a\u53d7\u63a7\u7684\u65e5\u5fd7\u4f1a\u5360\u7528SSD\u7a7a\u95f4\uff1a<\/p>\n

                   \n
                   • \u914d\u7f6elogrotate<\/code>\uff1a\u9488\u5bf9Nginx\/Apache\uff0c\u8bbe\u7f6eweekly<\/code>\uff08\u6bcf\u5468\u8f6e\u8f6c\uff09\u3001maxsize 100M<\/code>\uff08\u6700\u5927\u65e5\u5fd7\u5927\u5c0f\uff09\u4e0erotate 4<\/code>\uff08\u4fdd\u75594\u5468\u65e5\u5fd7\uff09\u3002<\/li>\n
                   • \u5c06\u65e5\u5fd7\u8fc1\u79fb\u81f3HDD\uff1a\u5c06\/var\/log<\/code>\u6302\u8f7d\u5230\u4e13\u7528HDD\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u901a\u5e38\u5305\u542b1TB HDD\u7528\u4e8e\u6d77\u91cf\u5b58\u50a8\uff09\uff0c\u6267\u884c\u547d\u4ee4mount \/dev\/sdb1 \/var\/log<\/code>\u3002<\/li>\n
                   • \u7981\u7528\u5197\u4f59\u65e5\u5fd7\uff1a\u5173\u95edNginx\/MySQL\u7684debug<\/code>\u6a21\u5f0f\uff08\u7f8e\u56fd\u751f\u4ea7\u73af\u5883\u670d\u52a1\u5668\u65e0\u9700\u7ec6\u7c92\u5ea6\u8c03\u8bd5\u65e5\u5fd7\uff09\u3002<\/li>\n<\/ul>\n<\/h2>\n

                     9. \u5b9a\u65f6\u4efb\u52a1\uff1a\u907f\u5f00\u7f8e\u56fd\u4e1a\u52a1\u9ad8\u5cf0<\/strong><\/h2>\n

                     \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u5b58\u5728\u4e1a\u52a1\u9ad8\u5cf0\u65f6\u6bb5\uff08\u7f8e\u56fd\u4e1c\u90e8\u65f6\u95f49:00-17:00\uff09\u2014\u2014\u9ad8\u5cf0\u65f6\u6bb5\u6267\u884c\u5b9a\u65f6\u4efb\u52a1\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\uff1a<\/p>\n

                     \n
                     1. \u5217\u51fa\u5f53\u524d\u5b9a\u65f6\u4efb\u52a1\uff1a\u8fd0\u884ccrontab -l<\/code>\u8bc6\u522b\u9ad8\u8d44\u6e90\u6d88\u8017\u4efb\u52a1\uff08\u5982mysqldump<\/code>\u5907\u4efd\uff09\u3002<\/li>\n
                     2. \u8c03\u6574\u81f3\u975e\u9ad8\u5cf0\u65f6\u6bb5\u6267\u884c\uff1a\u5c06\u5907\u4efd\u4efb\u52a1\u8bbe\u7f6e\u5728\u7f8e\u4e1c\u65f6\u95f42:00-4:00\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u6d41\u91cf\u4f4e\u8c37\u671f\uff09\uff0c\u547d\u4ee4\u793a\u4f8b\uff1a0 2 * * * \/usr\/bin\/mysqldump > \/backup\/db.sql<\/code>\u3002<\/li>\n
                     3. \u6e05\u7406\u4e34\u65f6\u6587\u4ef6\uff1a\u6dfb\u52a00 3 * * * rm -rf \/tmp\/*<\/code>\u5b9a\u65f6\u4efb\u52a1\uff0c\u5b9a\u671f\u6e05\u7406\/tmp<\/code>\u76ee\u5f55\uff08\u907f\u514d\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u51fa\u73b0\u78c1\u76d8\u6ee1\u989d\u9519\u8bef\uff09\u3002<\/li>\n<\/ol>\n<\/h2>\n

                        10. \u76d1\u63a7\uff1a\u8ddf\u8e2a\u7f8e\u56fd\u670d\u52a1\u5668\u8fd0\u884c\u6307\u6807<\/strong><\/h2>\n

                        \u65e0\u76d1\u63a7\u7684\u8c03\u4f18\u7b49\u540c\u4e8e\u76f2\u76ee\u64cd\u4f5c\u2014\u2014\u9700\u90e8\u7f72\u5de5\u5177\u8ddf\u8e2a\u7f8e\u56fd\u670d\u52a1\u5668\u5065\u5eb7\u72b6\u6001\uff1a<\/p>\n

                        \n
                        • \u5b9e\u65f6\u4eea\u8868\u76d8\uff1a\u4f7f\u7528Prometheus+Grafana\u76d1\u63a7CPU\uff08node_cpu_usage<\/code>\uff09\u3001\u5185\u5b58\uff08node_memory_usage<\/code>\uff09\u4e0e\u7f51\u7edc\uff08node_network_transmit_bytes<\/code>\uff09\u6307\u6807\u3002<\/li>\n
                        • \u544a\u8b66\u914d\u7f6e\uff1a\u901a\u8fc7Zabbix\u8bbe\u7f6e\u9608\u503c\u544a\u8b66\uff08\u5982CPU\u4f7f\u7528\u7387\u8fde\u7eed5\u5206\u949f\u8d8590%\u3001\u78c1\u76d8\u5269\u4f59\u7a7a\u95f4\u4f4e\u4e8e10%\uff09\uff0c\u786e\u4fdd\u5728\u7528\u6237\u611f\u77e5\u524d\u89e3\u51b3\u95ee\u9898\u3002<\/li>\n
                        • \u957f\u671f\u5206\u6790\uff1a\u4f7f\u7528sar -o \/var\/log\/sar\/daily 5 720<\/code>\uff08\u6355\u83b71\u5c0f\u65f6\u6570\u636e\uff09\u8bc6\u522b\u8d8b\u52bf\uff08\u5982\u7f8e\u56fd\u7535\u5546\u670d\u52a1\u5668\u7684\u6bcf\u5468I\/O\u5cf0\u503c\uff09\u3002<\/li>\n<\/ul>\n<\/h2>\n

                          \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\/\u6258\u7ba1\uff1a\u7279\u6b8a\u8c03\u4f18\u6ce8\u610f\u4e8b\u9879<\/strong><\/h2>\n

                          \u7f8e\u56fd\u5730\u533a\u670d\u52a1\u5668\u5b58\u5728\u72ec\u7279\u7ea6\u675f\u2014\u2014\u9700\u9488\u5bf9\u6027\u8c03\u6574\u8c03\u4f18\u7b56\u7565\uff1a<\/p>\n

                          \n
                          • \u7f51\u7edc\u62d3\u6251\uff1a\u7f8e\u56fd\u4e1c\u897f\u6d77\u5cb8\u670d\u52a1\u5668\u7684\u7f51\u7edc\u5bf9\u7b49\u8fde\u63a5\u4e0d\u540c\uff08\u5982\u4e1c\u6d77\u5cb8\u4e0e\u6b27\u6d32\u8fde\u63a5\u66f4\u5feb\uff09\u3002\u4e1c\u6d77\u5cb8\u670d\u52a1\u5668\u5c06tcp_syn_retries<\/code>\u8bbe\u4e3a3\uff0c\u897f\u6d77\u5cb8\u8bbe\u4e3a4\uff08\u51cf\u5c11\u91cd\u4f20\u5ef6\u8fdf\uff09\u3002<\/li>\n
                          • \u786c\u4ef6\u5dee\u5f02\uff1a\u7f8e\u56fd\u670d\u52a1\u5668\u6258\u7ba1\u63d0\u4f9b\u5546\u4f7f\u7528\u6df7\u5408\u786c\u4ef6\uff08\u5982\u6234\u5c14R750\u3001\u60e0\u666eDL380\uff09\u3002\u9700\u9488\u5bf9\u5177\u4f53\u670d\u52a1\u5668\u578b\u53f7\u6d4b\u8bd5\u5185\u6838\u8865\u4e01\uff0c\u907f\u514d\u7a33\u5b9a\u6027\u95ee\u9898\u3002<\/li>\n
                          • \u5408\u89c4\u8981\u6c42\uff1a\u8c03\u4f18\u65f6\u9700\u786e\u4fdd\u65e5\u5fd7\uff08\u5982PCI-DSS\u5408\u89c4\u65e5\u5fd7\uff09\u7559\u5b58\u7b26\u5408\u7f8e\u56fd\u6570\u636e\u7559\u5b58\u6cd5\u89c4\uff0c\u540c\u65f6\u907f\u514d\u65e5\u5fd7\u8fc7\u5ea6\u81a8\u80c0\u2014\u2014\u9700\u5c06logrotate<\/code>\u914d\u7f6e\u4e0e\u5408\u89c4\u8981\u6c42\u5bf9\u9f50\u3002<\/li>\n<\/ul>\n<\/h2>\n

                            \u5e38\u89c1\u95ee\u9898\uff1a\u7f8e\u56fd\u670d\u52a1\u5668\u7684Linux\u8c03\u4f18<\/strong><\/h2>\n

                            \n
                            • \u7f8e\u56fd\u670d\u52a1\u5668\u8c03\u4f18\u540e\u6027\u80fd\u65e0\u63d0\u5347\uff0c\u95ee\u9898\u51fa\u5728\u54ea\uff1f<\/strong>\u901a\u8fc7dmesg<\/code>\u67e5\u770b\u5185\u6838\u9519\u8bef\uff08\u5982\u4e0d\u517c\u5bb9\u6a21\u5757\uff09\uff0c\u6216\u4f7f\u7528perf top<\/code>\u5b9a\u4f4dCPU\u5360\u7528\u5927\u6237\u3002\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u5e38\u4f7f\u7528\u5171\u4eab\u7f51\u7edc\u94fe\u8def\u2014\u2014\u9700\u4e0e\u670d\u52a1\u5546\u786e\u8ba4\u5e26\u5bbd\u662f\u5426\u8fbe\u6807\u3002<\/li>\n
                            • \u7f8e\u56fdLinux\u670d\u52a1\u5668\u8c03\u4f18\u7684\u5e38\u89c1\u65b0\u624b\u9519\u8bef\u662f\u4ec0\u4e48\uff1f<\/strong>\u5c06vm.swappiness<\/code>\u8bbe\u4e3a0\uff08\u5b8c\u5168\u7981\u7528\u4ea4\u6362\u5206\u533a\uff09\u3002\u5373\u4fbf16GB\u4ee5\u4e0a\u5185\u5b58\u7684\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u4ecd\u9700\u4fdd\u7559\u4ea4\u6362\u5206\u533a\u4ee5\u5e94\u5bf9\u5185\u5b58\u6ea2\u51fa\uff08OOM\uff09\u95ee\u9898\uff0c\u5efa\u8bae\u8bbe\u4e3a5-10\u3002<\/li>\n
                            • \u5982\u4f55\u4e3a\u7f8e\u56fd\u9ed1\u8272\u661f\u671f\u4e94\uff08\u9ad8\u5e76\u53d1\u573a\u666f\uff09\u8c03\u4f18\uff1f<\/strong>\u5c06Nginx\u7684worker_connections<\/code>\u63d0\u5347\u81f320480\uff0c\u542f\u7528Redis\u7f13\u5b58MySQL\u67e5\u8be2\uff0c\u9ad8\u5cf0\u65f6\u6bb5\u4e34\u65f6\u6682\u505c\u975e\u5173\u952e\u5b9a\u65f6\u4efb\u52a1\uff08\u5982\u5907\u4efd\uff09\u3002<\/li>\n<\/ul>\n<\/h2>\n

                              \u4e3a\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e0e\u6258\u7ba1\u573a\u666f\u4f18\u5316Linux\u670d\u52a1\u5668\uff0c\u5e76\u975e\u201c\u4e00\u5200\u5207\u201d\u7684\u53c2\u6570\u8c03\u6574\u2014\u2014\u800c\u662f\u9700\u5c06\u5185\u6838\u3001CPU\u3001\u5185\u5b58\u3001\u7f51\u7edc\u914d\u7f6e\u4e0e\u786c\u4ef6\u3001\u5de5\u4f5c\u8d1f\u8f7d\u53ca\u5168\u7403\u7528\u6237\u7fa4\u4f53\u5bf9\u9f50\u3002\u9075\u5faa\u8fd910\u4e2a\u6781\u5ba2\u7ea7\u6280\u5de7\uff0c\u53ef\u6709\u6548\u964d\u4f4e\u5ef6\u8fdf\u3001\u63d0\u5347\u53ef\u7528\u6027\uff0c\u786e\u4fdd\u7f8e\u56fd\u670d\u52a1\u5668\u5728\u6d41\u91cf\u5cf0\u503c\uff08\u5982\u9ed1\u8272\u661f\u671f\u4e94\uff09\u671f\u95f4\u7a33\u5b9a\u8fd0\u884c\u3002\u9700\u6ce8\u610f\uff1aLinux\u670d\u52a1\u5668\u6027\u80fd\u8c03\u4f18\u662f\u8fed\u4ee3\u8fc7\u7a0b\u2014\u2014\u968f\u7740\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u9700\u6c42\u589e\u957f\uff0c\u9700\u901a\u8fc7\u76d1\u63a7\u5de5\u5177\u6301\u7eed\u4f18\u5316\u914d\u7f6e\u3002\u65e0\u8bba\u8fd0\u884c\u5c0f\u578b\u670d\u52a1\u5668\u6258\u7ba1\u8282\u70b9\u8fd8\u662f\u5927\u578b\u670d\u52a1\u5668\u79df\u7528\u96c6\u7fa4\uff0c\u8fd9\u4e9b\u6280\u672f\u90fd\u80fd\u8ba9\u57fa\u7840\u8bbe\u65bd\u4fdd\u6301\u9ad8\u6548\u7cbe\u7b80\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                              Linux\u670d\u52a1\u5668\u662f\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e0e\u670d\u52a1\u5668\u6258\u7ba1\u57fa\u7840\u8bbe\u65bd\u7684\u6838\u5fc3\u652f\u67f1\u2014\u2014\u4ece\u8de8\u5883\u7535\u5546\u540e\u7aef\u5230\u5168\u7403\u6e38\u620f\u8282\u70b9\uff0c\u518d\u5230\u4f01\u4e1a\u4e91\u670d\u52a1\uff0c\u5747\u4f9d\u8d56\u5176\u7a33\u5b9a\u8fd0\u884c\u3002\u5bf9\u4e8e\u7ba1\u7406\u7f8e\u56fd\u5730\u533a\u90e8\u7f72\u7684\u6280\u672f\u56e2\u961f\u800c\u8a00\uff0cLinux\u6027\u80fd\u4e0d\u4f73\u4f1a\u76f4\u63a5\u5f71\u54cd\u5ef6\u8fdf\u3001\u53ef\u7528\u6027\u4e0e\u7528\u6237\u4f53\u9a8c\u3002\u672c\u6587\u62c6\u89e310\u4e2a\u53ef\u843d\u5730\u7684\u6781\u5ba2\u7ea7Linux\u670d\u52a1\u5668\u6027\u80fd\u8c03\u4f18\u6280\u5de7\uff0c\u4e13\u4e3a\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\/\u6258\u7ba1\u573a\u666f\u8bbe\u8ba1\uff0c\u91cd\u70b9\u805a\u7126\u786c\u4ef6\u9002\u914d\u3001\u7f51\u7edc\u97e7\u6027\u4e0e\u8d44\u6e90\u6548\u7387\u3002Linux\u670d\u52a1\u5668\u6027\u80fd\u8c03\u4f18\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u53ca\u670d\u52a1\u5668\u6258\u7ba1\u662f\u6700\u5927\u5316\u6b64\u7c7b\u57fa\u7840\u8bbe\u65bd\u4ef7\u503c\u7684\u6838\u5fc3\u73af\u8282\u3002 1. \u9488\u5bf9\u7f8e\u56fd\u670d\u52a1\u5668\u786c\u4ef6\u7684\u5185\u6838\u4f18\u5316 Linux\u5185\u6838\u662f\u7f8e\u56fd\u670d\u52a1\u5668\u786c\u4ef6\u4e0e\u8f6f\u4ef6\u4e4b\u95f4\u7684\u6865\u6881\u2014\u2014\u9009\u62e9\u5408\u9002\u7684\u5185\u6838\u7248\u672c\u5e76\u8c03\u6574\u53c2\u6570\uff0c\u662f\u5b9e\u73b0\u5cf0\u503c\u6027\u80fd\u7684\u5fc5\u8981\u524d\u63d0\u3002\u4ee5\u4e0b\u662f\u9002\u914d\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u786c\u4ef6\uff08\u5982\u82f1\u7279\u5c14\u81f3\u5f3a\u5904\u7406\u5668\u3001\u4f01\u4e1a\u7ea7\u4e3b\u677f\uff09\u7684\u4f18\u5316\u65b9\u6848\uff1a \u9009\u62e9\u786c\u4ef6\u4f18\u5316\u5185\u6838\uff1a\u4f7f\u7528CentOS Stream\u6216Ubuntu Server\u7b49\u53d1\u884c\u7248\uff0c\u642d\u914d\u9488\u5bf9\u82f1\u7279\u5c14\u81f3\u5f3a\u5904\u7406\u5668\u7684\u8865\u4e01\u5185\u6838\uff08\u5982AWS\u7f8e\u56fd\u533a\u57df\u4e13\u7528\u7684linux-image-aws\uff09\uff0c\u5145\u5206\u5229\u7528CPU\u6307\u4ee4\u96c6\uff08AVX-512\u3001Turbo Boost\uff09\u5e76\u964d\u4f4e\u6027\u80fd\u5f00\u9500\u3002 \u9488\u5bf9\u7f8e\u56fd\u7f51\u7edc\u9700\u6c42\u8c03\u6574sysctl.conf\uff1a net.ipv4.tcp_max_syn_backlog = 4096\uff1a\u5e94\u5bf9\u56fd\u9645TCP\u8fde\u63a5\u5cf0\u503c\uff08\u5bf9\u670d\u52a1\u5168\u7403\u7528\u6237\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u81f3\u5173\u91cd\u8981\uff09\u3002 net.ipv4.tcp_tw_reuse = 1\uff1a\u590d\u7528TIME_WAIT\u72b6\u6001\u7684\u5957\u63a5\u5b57\uff0c\u51cf\u5c11\u8de8\u5927\u897f\u6d0b\/\u592a\u5e73\u6d0b\u94fe\u8def\u7684\u8fde\u63a5\u5ef6\u8fdf\u3002 vm.swappiness = 10\uff1a\u6700\u5c0f\u5316\u4ea4\u6362\u5206\u533a\u4f7f\u7528\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u901a\u5e38\u914d\u7f6e16GB\u4ee5\u4e0a\u5185\u5b58\uff0c\u5e94\u4f18\u5148\u4f7f\u7528\u7269\u7406\u5185\u5b58\uff09\u3002 2. CPU\u8c03\u5ea6\uff1a\u5c06\u8fdb\u7a0b\u7ed1\u5b9a\u81f3\u6838\u5fc3 \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\uff08\u5c24\u5176\u662f\u670d\u52a1\u5668\u6258\u7ba1\u573a\u666f\uff09\u5e38\u8fd0\u884c\u6df7\u5408\u5de5\u4f5c\u8d1f\u8f7d\u2014\u2014\u6570\u636e\u5e93\u3001Web\u670d\u52a1\u5668\u4e0e\u7f13\u5b58\u5c42\u5e76\u5b58\u3002\u4e0d\u5408\u7406\u7684CPU\u8c03\u5ea6\u4f1a\u5bfc\u81f4\u4e0a\u4e0b\u6587\u5207\u6362\u5f00\u9500\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f18\u5316\uff1a \u76d1\u63a7CPU\u8d1f\u8f7d\uff1a\u4f7f\u7528top -b -n 1 | grep Cpu\u6216mpstat -P ALL 1\u8bc6\u522b\u672a\u5145\u5206\u5229\u7528\u7684\u6838\u5fc3\uff08\u57288\u6838\u4ee5\u4e0a\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u4e2d\u8f83\u4e3a\u5e38\u89c1\uff09\u3002 \u8bbe\u7f6eCPU\u4eb2\u548c\u6027\uff1a\u5c06\u5173\u952e\u8fdb\u7a0b\uff08\u5982MySQL\u3001Nginx\uff09\u7ed1\u5b9a\u5230\u4e13\u7528\u6838\u5fc3\uff0c\u4f8b\u5982taskset -c 0-3 \/usr\/sbin\/nginx\uff08\u5c06Nginx\u7ed1\u5b9a\u52300-3\u53f7\u6838\u5fc3\uff0c\u907f\u514d\u8de8\u6838\u5fc3\u8df3\u8f6c\uff09\u3002 \u8c03\u6574\u8fdb\u7a0b\u4f18\u5148\u7ea7\uff1a\u4f7f\u7528nice -n -5 \/usr\/sbin\/mysqld\u63d0\u5347\u6570\u636e\u5e93\u8fdb\u7a0b\u4f18\u5148\u7ea7\uff08nice\u503c\u8d8a\u4f4e\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8\uff09\uff0c\u9002\u914d\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e2d\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u5de5\u4f5c\u8d1f\u8f7d\u3002 3. \u5185\u5b58\u7ba1\u7406\uff1a\u7cbe\u7b80\u5197\u4f59\u8fdb\u7a0b\uff0c\u4f18\u5316\u7f13\u5b58\u7b56\u7565 \u5185\u5b58\u6d6a\u8d39\u662f\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e2d\u7684\u4e3b\u8981\u6027\u80fd\u74f6\u9888\u2014\u2014\u5373\u4fbf\u914d\u7f6e32GB\u5185\u5b58\uff0c\u82e5\u65e0\u7528\u670d\u52a1\u5360\u7528\u8d44\u6e90\uff0c\u4ecd\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u53d8\u6162\u3002\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f18\u5316\uff1a \u8bca\u65ad\u5185\u5b58\u6cc4\u6f0f\uff1a\u8fd0\u884cfree -h\u4e0evmstat 5 10\u8ddf\u8e2abuff\/cache\u589e\u957f\u60c5\u51b5\uff1b\u4f7f\u7528ps aux –sort=-%mem\u5b9a\u4f4d\u5185\u5b58\u5360\u7528\u5927\u6237\uff08\u5982\u672a\u4f7f\u7528\u7684Java\u670d\u52a1\uff09\u3002 \u505c\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\uff1a\u901a\u8fc7systemctl disable –now avahi-daemon\u7981\u7528avahi-daemon\u3001bluetooth\u6216postfix\u7b49\u975e\u5fc5\u8981\u670d\u52a1\uff08\u6b64\u7c7b\u670d\u52a1\u5bf9\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u65e0\u5b9e\u9645\u4ef7\u503c\uff09\u3002 \u4f18\u5316\u9875\u7f13\u5b58\uff1a\u5728sysctl.conf\u4e2d\u8bbe\u7f6evm.vfs_cache_pressure = 50\uff0c\u4f18\u5148\u4fdd\u7559\u76ee\u5f55\/\u6587\u4ef6\u7f13\u5b58\uff08\u53ef\u52a0\u5feb\u7f8e\u56fd\u7535\u5546\u4ea7\u54c1\u9875\u9762\u7684\u91cd\u590d\u8bfb\u53d6\u901f\u5ea6\uff09\u3002 […]<\/p>\n

                              Read More…<\/a><\/p>\n","protected":false},"author":2,"featured_media":26091,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[8385,8386,5232,4853,1906],"class_list":["post-26110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-linux-server-performance-tuning-sc","tag-linux-server-optimization-sc","tag-us-servers-sc","tag-us-hosting-sc","tag-1906"],"acf":[],"yoast_head":"\n