{"id":241,"date":"2011-06-11T13:16:59","date_gmt":"2011-06-11T13:16:59","guid":{"rendered":"http:\/\/hgtas.com\/?p=241"},"modified":"2011-06-11T13:16:59","modified_gmt":"2011-06-11T13:16:59","slug":"detailed-apache-server-optimization-centos-system","status":"publish","type":"post","link":"https:\/\/508.me\/?p=241","title":{"rendered":"CentOS\u7cfb\u7edfApache\u670d\u52a1\u5668\u4f18\u5316\u8be6\u89e3"},"content":{"rendered":"

Apache\u662f\u4e16\u754c\u4f7f\u7528\u6392\u540d\u7b2c\u4e00\u7684Web\u670d\u52a1\u5668\u8f6f\u4ef6\u3002\u5b83\u53ef\u4ee5\u8fd0\u884c\u5728\u51e0\u4e4e\u6240\u6709\u5e7f\u6cdb\u4f7f\u7528\u7684\u8ba1\u7b97\u673a\u5e73\u53f0\u4e0a\uff0c\u7531\u4e8e\u5176\u8de8\u5e73\u53f0\u548c\u5b89\u5168\u6027\u88ab\u5e7f\u6cdb\u4f7f\u7528\uff0c\u662f\u6700\u6d41\u884c\u7684Web\u670d\u52a1\u5668\u7aef\u8f6f\u4ef6\u4e4b\u4e00\u3002\u73b0\u5728\u6211\u4eec\u5c31\u6765\u770b\u770b\u5728CentOS\u7cfb\u7edf\u4e2dApache\u7684\u4f18\u5316\u3002<\/p>\n

1.Apache\u4f18\u5316<\/strong><\/p>\n

Apache\u80fd\u591f\u5728CentOS\u7cfb\u7edf\u6b63\u5e38\u8fd0\u884c\u3002\u4f46\u662f,\u5bf9\u4e8e\u8bbf\u95ee\u91cf\u7a0d\u5927\u7684\u7ad9\u70b9,Apache\u7684\u8fd9\u4e9b\u9ed8\u8ba4\u914d\u7f6e\u662f\u65e0\u6cd5\u6ee1\u8db3\u9700\u6c42\u7684,\u6211\u4eec\u4ecd\u9700\u8c03\u6574 Apache\u7684\u4e00\u4e9b\u53c2\u6570,\u4f7fApache\u80fd\u591f\u5728\u5927\u8bbf\u95ee\u91cf\u73af\u5883\u4e0b\u53d1\u6325\u51fa\u66f4\u597d\u7684\u6027\u80fd\u3002CentOS\u7cfb\u7edf\u4e2d\uff0c\u4ee5\u4e0b\u6211\u4eec\u5bf9Apache\u914d\u7f6e\u6587\u4ef6 httpd.conf\u4e2d\u5bf9\u6027\u80fd\u5f71\u54cd\u8f83\u5927\u7684\u53c2\u6570\u8fdb\u884c\u4e00\u4e9b\u8bf4\u660e\u3002<\/p>\n

(1)Timeout\u8be5\u53c2\u6570\u6307\u5b9aApache\u5728\u63a5\u6536\u8bf7\u6c42\u6216\u53d1\u9001\u6240\u8bf7\u6c42\u5185\u5bb9\u4e4b\u524d\u7684\u6700\u957f\u7b49\u5f85\u65f6\u95f4(\u79d2),\u82e5\u8d85\u8fc7\u8be5\u65f6\u95f4Apache\u5219\u653e\u5f03\u5904\u7406\u8be5\u8bf7\u6c42,\u5e76\u91ca\u653e\u8fde\u63a5\u3002\u8be5\u53c2\u6570\u9ed8\u8ba4\u503c\u4e3a120,\u63a8\u8350\u8bbe\u7f6e\u4e3a60,\u5bf9\u4e8e\u8bbf\u95ee\u91cf\u8f83\u5927\u7684\u7f51\u7ad9\u53ef\u4ee5\u8bbe\u7f6e\u4e3a30\u3002<\/p>\n

(2)KeepAlive\u8be5\u53c2\u6570\u63a7\u5236Apache\u662f\u5426\u5141\u8bb8\u5728\u4e00\u4e2a\u8fde\u63a5\u4e2d\u6709\u591a\u4e2a\u8bf7\u6c42,\u9ed8\u8ba4\u6253\u5f00\u3002\u4f46\u5bf9\u4e8e\u5927\u591a\u6570\u8bba\u575b\u7c7b\u578b\u7ad9\u70b9\u6765\u8bf4,\u901a\u5e38\u8bbe\u7f6e\u4e3aoff\u4ee5\u5173\u95ed\u8be5\u652f\u6301\u3002<\/p>\n

(3)MPM-prefork.c\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0bApache\u4f7f\u7528Prefork(\u8fdb\u7a0b)\u5de5\u4f5c\u6a21\u5f0f,\u53ef\u4ee5\u8bf4\u8fd9\u90e8\u5206\u7684\u53c2\u6570\u8bbe\u7f6e\u662f\u5bf9Apache\u6027\u80fd\u5f71\u54cd\u7684\u6838\u5fc3\u548c\u5173\u952e\u3002\u7528\u6237\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u6863\u4e2d\u627e\u5230\u4ee5\u4e0b\u914d\u7f6e\u6bb5:<\/p>\n

\r\n
    \r\n\t
  1. <IfModuleprefork.c><\/li>\r\n\t
  2. StartServers5<\/li>\r\n\t
  3. MinSpareServers5<\/li>\r\n\t
  4. MaxSpareServers10<\/li>\r\n\t
  5. MaxClients15<\/li>\r\n\t
  6. MaxRequestsPerChild0<\/li>\r\n\t
  7. IfModule><\/li>\r\n<\/ol>\r\n<\/pre>\n
    \u8fd9\u5c31\u662f\u63a7\u5236Apache\u8fdb\u7a0b\u5de5\u4f5c\u7684\u914d\u7f6e\u6bb5,\u4e3a\u4e86\u66f4\u597d\u7684\u7406\u89e3\u4e0a\u8ff0\u914d\u7f6e\u4e2d\u7684\u5404\u9879\u53c2\u6570,\u4e0b\u9762\u8ba9\u6211\u4eec\u5148\u4e86\u89e3\u4e00\u4e0bApache\u662f\u5982\u4f55\u63a7\u5236\u8fdb\u7a0b\u5de5\u4f5c\u7684\u3002\u6211\u4eec\u77e5 \u9053,\u5728Unix\u7cfb\u7edf\u4e2d,\u5f88\u591a\u670d\u52a1(Service)\u7684\u5b88\u62a4\u8fdb\u7a0b(Daemon)\u5728\u542f\u52a8\u65f6\u4f1a\u521b\u5efa\u4e00\u4e2a\u8fdb\u7a0b\u4ee5\u51c6\u5907\u5e94\u7b54\u53ef\u80fd\u7684\u8fde\u63a5\u8bf7\u6c42,\u670d\u52a1\u5373\u8fdb\u5165\u4e86\u7aef\u53e3\u76d1\u542c\u72b6 \u6001,\u5f53\u4e00\u4e2a\u6765\u81ea\u5ba2\u6237\u7aef(Client)\u7684\u8bf7\u6c42\u88ab\u53d1\u9001\u81f3\u670d\u52a1\u6240\u76d1\u542c\u7684\u7aef\u53e3\u65f6,\u8be5\u670d\u52a1\u8fdb\u7a0b\u5373\u4f1a\u5904\u7406\u8be5\u8bf7\u6c42,\u5728\u5904\u7406\u8fc7\u7a0b\u4e2d,\u8be5\u8fdb\u7a0b\u5904\u4e8e\u72ec\u5360\u72b6\u6001,\u4e5f\u5c31\u662f\u8bf4\u5982\u679c\u6b64 \u65f6\u6709\u5176\u4ed6\u8bf7\u6c42\u5230\u8fbe,\u8fd9\u4e9b\u8bf7\u6c42\u53ea\u80fd\u201c\u6392\u961f\u201d\u7b49\u5f85\u5f53\u524d\u8bf7\u6c42\u5904\u7406\u5b8c\u6210\u4e14\u670d\u52a1\u8fdb\u7a0b\u91ca\u653e\u3002<\/p>\n
    \u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u8d8a\u6765\u8d8a\u591a\u7684\u8bf7\u6c42\u5904\u4e8e\u961f\u5217\u7b49\u5f85\u72b6\u6001,\u5b9e\u9645\u8868\u73b0\u5c31\u662f\u8be5\u670d\u52a1\u5904\u7406\u80fd\u529b\u975e\u5e38\u4f4e\u4e0b\u3002Apache\u4f7f\u7528Prefork\u6a21\u5f0f\u5f88\u597d\u7684\u89e3\u51b3\u4e86\u8fd9\u4e00\u95ee\u9898\u3002\u4e0b\u9762\u6211\u4eec\u6765\u770b\u770bApache\u5b9e\u9645\u4e0a\u662f\u5982\u4f55\u9ad8\u6548\u7387\u5de5\u4f5c\u7684\u3002<\/p>\n
    \u5f53Apache\u542f\u52a8\u65f6,Apache\u4f1a\u542f\u52a8StartSpareServers\u4e2a\u7a7a\u95f2\u8fdb\u7a0b\u540c\u65f6\u51c6\u5907\u63a5\u6536\u5904\u7406\u8bf7\u6c42,\u5f53\u591a\u4e2a\u8bf7\u6c42\u5230\u6765 \u65f6,StarSpareServers\u8fdb\u884c\u4f1a\u8d8a\u6765\u8d8a\u5c11,\u5f53\u7a7a\u95f2\u8fdb\u7a0b\u51cf\u5c11\u5230MinSpareServers\u4e2a\u65f6,Apache\u4e3a\u4e86\u80fd\u591f\u7ee7\u7eed\u6709\u5145\u88d5\u7684\u8fdb\u7a0b\u5904\u7406 \u8bf7\u6c42,\u5b83\u4f1a\u518d\u542f\u52a8StartsServers\u4e2a\u8fdb\u7a0b\u5907\u7528,\u8fd9\u6837\u5c31\u5927\u5927\u51cf\u5c11\u4e86\u8bf7\u6c42\u961f\u5217\u7b49\u5f85\u7684\u53ef\u80fd,\u4f7f\u5f97\u670d\u52a1\u6548\u7387\u63d0\u9ad8,\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u53eb\u505aPre-fork\u7684\u539f \u56e0;\u8ba9\u6211\u4eec\u7ee7\u7eed\u8ddf\u8e2aApache\u7684\u5de5\u4f5c,\u6211\u4eec\u5047\u8bbeApache\u5df2\u7ecf\u542f\u52a8\u4e86200\u4e2a\u8fdb\u7a0b\u6765\u5904\u7406\u8bf7\u6c42,\u7406\u8bba\u4e0a\u6765\u8bf4,\u6b64\u65f6Apache\u4e00\u5171\u6709205\u4e2a\u8fdb\u7a0b,\u800c\u8fc7 \u4e86\u4e00\u6bb5\u65f6\u95f4,\u5047\u8bbe\u6709100\u4e2a\u8bf7\u6c42\u90fd\u5f97\u5230\u4e86Apache\u7684\u54cd\u5e94\u548c\u5904\u7406,\u90a3\u4e48\u6b64\u65f6\u8fd9100\u4e2a\u8fdb\u7a0b\u5c31\u88ab\u91ca\u653e\u6210\u4e3a\u7a7a\u95f2\u8fdb\u7a0b,\u90a3\u4e48\u6b64\u65f6Apache\u6709105\u4e2a\u7a7a\u95f2\u8fdb \u7a0b\u3002\u800c\u5bf9\u4e8e\u670d\u52a1\u800c\u8a00,\u542f\u52a8\u592a\u591a\u7684\u7a7a\u95f2\u8fdb\u7a0b\u65f6\u6ca1\u6709\u4efb\u4f55\u610f\u4e49\u7684,\u53cd\u800c\u4f1a\u964d\u4f4e\u670d\u52a1\u5668\u7684\u6574\u4f53\u6027\u80fd,\u90a3\u4e48Apache\u771f\u7684\u4f1a\u6709105\u4e2a\u7a7a\u95f2\u8fdb\u7a0b\u4e48?<\/p>\n
    \u5f53\u7136\u4e0d\u4f1a!\u5b9e\u9645\u4e0aApache\u968f\u65f6\u5728\u68c0\u67e5\u81ea\u5df1,\u5f53\u53d1\u73b0\u6709\u8d85\u8fc7MaxSpareServers\u4e2a\u7a7a\u95f2\u8fdb\u7a0b\u65f6,\u5219\u4f1a\u81ea\u52a8\u505c\u6b62\u5173\u95ed\u4e00\u4e9b\u8fdb\u7a0b,\u4ee5\u4fdd\u8bc1\u7a7a\u95f2\u8fdb \u7a0b\u4e0d\u8fc7\u8fc7\u591a\u3002\u8bf4\u5230\u8fd9\u91cc,\u7528\u6237\u5e94\u8be5\u5bf9Apache\u7684\u5de5\u4f5c\u65b9\u5f0f\u6709\u4e86\u4e00\u5b9a\u7684\u4e86\u89e3,\u5982\u679c\u60f3\u83b7\u5f97\u66f4\u591a\u66f4\u8be6\u7ec6\u7684\u8bf4\u660e\u8bf7\u53c2\u9605Apache\u624b\u518c\u6587\u6863\u3002<\/p>\n
    \u6211\u4eec\u8fd8\u6709\u4e24\u4e2aCentOS\u7cfb\u7edf\u53c2\u6570\u6ca1\u6709\u4ecb\u7ecd:MaxClients\u548cMaxRequestPerchild;MaxClients\u6307\u5b9aApache \u5728\u540c\u4e00\u65f6\u95f4\u5185\u6700\u591a\u5141\u8bb8\u6709\u591a\u5c11\u5ba2\u6237\u7aef\u80fd\u591f\u4e0e\u5176\u8fde\u63a5,\u5982\u679c\u8d85\u8fc7MaxClients\u4e2a\u8fde\u63a5,\u5ba2\u6237\u7aef\u5c06\u4f1a\u5f97\u5230\u4e00\u4e2a\u201c\u670d\u52a1\u5668\u7e41\u5fd9\u201d\u7684\u9519\u8bef\u9875\u9762\u3002\u6211\u4eec\u770b\u5230\u9ed8\u8ba4\u60c5\u51b5\u4e0b MaxClients\u8bbe\u7f6e\u4e3a15,\u8fd9\u5bf9\u4e00\u4e9b\u4e2d\u578b\u7ad9\u70b9\u548c\u5927\u578b\u7ad9\u70b9\u663e\u7136\u662f\u8fdc\u8fdc\u4e0d\u591f\u7684!\u4e5f\u8bb8\u60a8\u9700\u8981\u540c\u65f6\u5141\u8bb8512\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u624d\u80fd\u6ee1\u8db3\u5e94\u7528\u9700\u6c42,\u597d\u5427,\u90a3\u4e48\u5c31\u8ba9 \u6211\u4eec\u628aMaxClients\u4fee\u6539\u4e3a512,\u4fdd\u5b58httpd.conf\u5e76\u9000\u51fa,\u91cd\u542fApache,\u5f88\u9057\u61be,\u5728\u91cd\u542f\u8fc7\u7a0b\u5f53\u4e2d\u60a8\u770b\u5230\u4e86\u4e00\u4e9b\u9519\u8bef\u63d0 \u793a,Apache\u91cd\u542f\u5931\u8d25\u3002<\/p>\n
    \u9519\u8bef\u63d0\u793a\u4e2d\u544a\u8bc9\u60a8MaxClients\u6700\u5927\u53ea\u80fd\u8bbe\u5b9a\u4e3a256,\u76f8\u4fe1\u60a8\u4e00\u5b9a\u5f88\u5931\u671b\u3002\u4e0d\u8fc7\u4e0d\u8981\u6cae\u4e27,Apache\u4f5c\u4e3a\u4e16\u754c\u4e00\u6d41\u7684WebServer\u4e00\u5b9a \u4e0d\u4f1a\u5982\u6b64\u5355\u8584\u7684!\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b,MaxClients\u7684\u786e\u53ea\u80fd\u8bbe\u5b9a\u4e3a\u4e0d\u8d85\u8fc7256\u7684\u6574\u6570,\u4f46\u662f,\u5982\u679c\u60a8\u6709\u9700\u8981\u5b8c\u5168\u53ef\u4ee5\u968f\u610f\u5b9a\u5236,\u6b64\u65f6\u5c31\u9700\u8981\u4f7f\u7528 ServerLimit\u53c2\u6570\u6765\u914d\u5408\u4f7f\u7528,\u7b80\u5355\u7684\u8bf4ServerLimit\u5c31\u50cf\u662f\u6c34\u6876,\u800cMaxClients\u5c31\u50cf\u662f\u6c34,\u60a8\u53ef\u4ee5\u901a\u8fc7\u66f4\u6362\u66f4\u5927\u7684\u6c34\u6876(\u5c06 ServerLimit\u8bbe\u5b9a\u4e3a\u4e00\u4e2a\u8f83\u5927\u503c)\u6765\u5bb9\u7eb3\u66f4\u591a\u7684\u6c34(MaxClients),\u4f46\u8981\u6ce8\u610f,MaxClients\u7684\u8bbe\u5b9a\u6570\u503c\u662f\u4e0d\u80fd\u5927\u4e8e ServerLimit\u7684\u8bbe\u5b9a\u6570\u503c\u7684!<\/p>\n
    \u4e0b\u9762\u8ba9\u6211\u4eec\u4e86\u89e3\u4e00\u4e0bMaxRequestPerChild\u53c2\u6570,\u8be5\u53c2\u6570\u6307\u5b9a\u4e00\u4e2a\u8fde\u63a5\u8fdb\u7a0b\u4e2d\u53ef\u4ee5\u6709\u591a\u5c11\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5de5\u4f5c\u3002\u4e5f\u8bb8\u8fd9\u6837\u89e3\u91ca\u8fc7\u4e8e\u4e13\u4e1a,\u90a3\u4e48\u60a8 \u53ea\u8981\u60f3\u60f3\u201c\u7f51\u7edc\u8682\u8681\u201d\u3001\u201c\u7f51\u9645\u5feb\u8f66FlashGet\u201d\u4e2d\u7684\u201c\u591a\u70b9\u540c\u65f6\u4e0b\u8f7d\u201d\u5373\u53ef,\u8be5\u53c2\u6570\u5b9e\u9645\u4e0a\u5c31\u662f\u9650\u5236\u6700\u591a\u53ef\u4ee5\u7528\u51e0\u4e2a\u201c\u70b9\u201d\u3002\u9ed8\u8ba4\u8bbe\u7f6e\u4e3a0,\u5373\u4e3a:\u4e0d\u9650 \u5236\u3002\u4f46\u9700\u8981\u6ce8\u610f,\u5982\u679c\u5c06\u8be5\u503c\u8bbe\u7f6e\u7684\u8fc7\u5c0f\u4f1a\u5f15\u8d77\u8bbf\u95ee\u95ee\u9898,\u5982\u679c\u6ca1\u6709\u7279\u6b8a\u9700\u8981\u6216\u8005\u8bbf\u95ee\u91cf\u538b\u529b\u5e76\u975e\u5f88\u5927\u53ef\u4ee5\u4fdd\u6301\u9ed8\u8ba4\u503c,\u5982\u679c\u8bbf\u95ee\u91cf\u5f88\u5927\u5219\u63a8\u8350\u8bbe\u7f6e\u4e3a2048\u3002<\/p>\n
    \u597d\u4e86,\u89e3\u91ca\u4e86\u8fd9\u4e48\u591a,\u8ba9\u6211\u4eec\u770b\u770b\u7ecf\u8fc7\u4fee\u6539\u540ePerfork.c\u914d\u7f6e\u6bb5\u7684\u63a8\u8350\u914d\u7f6e:<\/p>\n
    \r\n
      \r\n\t
    1. <IfModuleprefork.c><\/li>\r\n\t
    2. StartServers5<\/li>\r\n\t
    3. MinSpareServers5<\/li>\r\n\t
    4. MaxSpareServers10<\/li>\r\n\t
    5. ServerLimit1024<\/li>\r\n\t
    6. MaxClients768<\/li>\r\n\t
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