\u6211\u4eec\u77e5\u9053\u5728Linux\u4e2d\u4e00\u5207\u7686\u6587\u4ef6\uff0c\u90a3\u4e48\u4e00\u53f0\u670d\u52a1\u5668\u6700\u5927\u80fd\u6253\u5f00\u591a\u5c11\u4e2a\u6587\u4ef6\u5462\uff1fLinux\u4e0a\u80fd\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u6570\u91cf\u53d7\u4e09\u4e2a\u53c2\u6570\u5f71\u54cd\uff0c\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n
\u2022fs.file-max \uff08\u7cfb\u7edf\u7ea7\u522b\u53c2\u6570\uff09\uff1a\u8be5\u53c2\u6570\u63cf\u8ff0\u4e86\u6574\u4e2a\u7cfb\u7edf\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u6570\u91cf\u3002\u4f46\u662froot\u7528\u6237\u4e0d\u4f1a\u53d7\u8be5\u53c2\u6570\u9650\u5236\uff08\u6bd4\u5982\uff1a\u73b0\u5728\u6574\u4e2a\u7cfb\u7edf\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u5df2\u8fbe\u5230fs.file-max \uff0c\u6b64\u65f6root\u7528\u6237\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528ps\u3001kill\u7b49\u547d\u4ee4\u6216\u6253\u5f00\u5176\u4ed6\u6587\u4ef6\u63cf\u8ff0\u7b26\uff09<\/p>\n\n\n\n
\u2022soft nofile\uff08\u8fdb\u7a0b\u7ea7\u522b\u53c2\u6570\uff09\uff1a\u9650\u5236\u5355\u4e2a\u8fdb\u7a0b\u4e0a\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u6570\u3002\u53ea\u80fd\u5728Linux\u4e0a\u914d\u7f6e\u4e00\u6b21\uff0c\u4e0d\u80fd\u9488\u5bf9\u4e0d\u540c\u7528\u6237\u914d\u7f6e\u4e0d\u540c\u7684\u503c<\/p>\n\n\n\n
\u2022fs.nr_open\uff08\u8fdb\u7a0b\u7ea7\u522b\u53c2\u6570\uff09\uff1a\u9650\u5236\u5355\u4e2a\u8fdb\u7a0b\u4e0a\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u6570\u3002\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7528\u6237\u914d\u7f6e\u4e0d\u540c\u7684\u503c<\/p>\n\n\n\n
\u8fd9\u4e09\u4e2a\u53c2\u6570\u4e4b\u95f4\u8fd8\u6709\u8026\u5408\u5173\u7cfb\uff0c\u6240\u4ee5\u914d\u7f6e\u503c\u7684\u65f6\u5019\u8fd8\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u4e09\u70b9\uff1a<\/p>\n\n\n\n
1.\u5982\u679c\u60f3\u52a0\u5927soft nofile\uff0c\u90a3\u4e48hard nofile\u53c2\u6570\u503c\u4e5f\u9700\u8981\u4e00\u8d77\u8c03\u6574\u3002\u5982\u679c\u56e0\u4e3ahard nofile\u53c2\u6570\u503c\u8bbe\u7f6e\u7684\u4f4e\uff0c\u90a3\u4e48soft nofile\u53c2\u6570\u7684\u503c\u8bbe\u7f6e\u7684\u518d\u9ad8\u4e5f\u6ca1\u6709\u7528\uff0c\u5b9e\u9645\u751f\u6548\u7684\u503c\u4f1a\u6309\u7167\u4e8c\u8005\u6700\u4f4e\u7684\u6765\u3002<\/p>\n\n\n\n
2.\u5982\u679c\u589e\u5927\u4e86hard nofile\uff0c\u90a3\u4e48fs.nr_open\u4e5f\u90fd\u9700\u8981\u8ddf\u7740\u4e00\u8d77\u8c03\u6574\uff08fs.nr_open\u53c2\u6570\u503c\u4e00\u5b9a\u8981\u5927\u4e8ehard nofile\u53c2\u6570\u503c\uff09\u3002\u5982\u679c\u4e0d\u5c0f\u5fc3\u628ahard nofile\u7684\u503c\u8bbe\u7f6e\u7684\u6bd4fs.nr_open\u8fd8\u5927\uff0c\u90a3\u4e48\u540e\u679c\u6bd4\u8f83\u4e25\u91cd\u3002\u4f1a\u5bfc\u81f4\u8be5\u7528\u6237\u65e0\u6cd5\u767b\u5f55\uff0c\u5982\u679c\u8bbe\u7f6e\u7684\u662f*\uff0c\u90a3\u4e48\u6240\u6709\u7528\u6237\u90fd\u65e0\u6cd5\u767b\u5f55<\/p>\n\n\n\n
3.\u5982\u679c\u52a0\u5927\u4e86fs.nr_open\uff0c\u4f46\u662f\u662f\u7528\u7684echo \"xxx\" > ..\/fs\/nr_open\u547d\u4ee4\u6765\u4fee\u6539\u7684fs.nr_open\u7684\u503c\uff0c\u90a3\u4e48\u521a\u6539\u5b8c\u53ef\u80fd\u4e0d\u4f1a\u6709\u95ee\u9898\uff0c\u4f46\u662f\u53ea\u8981\u673a\u5668\u4e00\u91cd\u542f\uff0c\u90a3\u4e48\u4e4b\u524d\u901a\u8fc7echo\u547d\u4ee4\u8bbe\u7f6e\u7684fs.nr_open\u503c\u4fbf\u4f1a\u5931\u6548\uff0c\u7528\u6237\u8fd8\u662f\u65e0\u6cd5\u767b\u5f55\u3002\u6240\u4ee5\u975e\u5e38\u4e0d\u5efa\u8bae\u4f7f\u7528echo\u7684\u65b9\u5f0f\u4fee\u6539\u5185\u6838\u53c2\u6570\uff01\uff01\uff01<\/p>\n\n\n\n
\u5047\u8bbe\u60f3\u8ba9\u8fdb\u7a0b\u53ef\u4ee5\u6253\u5f00100\u4e07\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u8fd9\u91cc\u7528\u4fee\u6539conf\u6587\u4ef6\u7684\u65b9\u5f0f\u7ed9\u51fa\u4e00\u4e2a\u5efa\u8bae\u3002\u5982\u679c\u65e5\u540e\u5de5\u4f5c\u91cc\u6709\u7c7b\u4f3c\u7684\u9700\u6c42\u53ef\u4ee5\u4f5c\u4e3a\u53c2\u8003\u3002<\/p>\n\n\n\n
\u2022vim \/etc\/sysctl.conf<\/p>\n\n\n\n
fs.file-max=1100000 \/\/ \u7cfb\u7edf\u7ea7\u522b\u8bbe\u7f6e\u6210110\u4e07\uff0c\u591a\u7559\u70b9buffer\nfs.nr_open=1100000 \/\/ \u8fdb\u7a0b\u7ea7\u522b\u4e5f\u8bbe\u7f6e\u6210110\u4e07\uff0c\u56e0\u4e3a\u8981\u4fdd\u8bc1\u6bd4 hard nofile\u5927<\/code><\/pre>\n\n\n\n\u2022\u4f7f\u4e0a\u9762\u7684\u914d\u7f6e\u751f\u6548sysctl -p<\/p>\n\n\n\n
\u2022vim \/etc\/security\/limits.conf<\/p>\n\n\n\n
\/\/ \u7528\u6237\u8fdb\u7a0b\u7ea7\u522b\u90fd\u8bbe\u7f6e\u6210100\u5b8c\nsoft nofile 1000000\nhard nofile 1000000<\/code><\/pre>\n\n\n\n\u4e8c\u3001\u4e00\u53f0\u670d\u52a1\u5668\u6700\u5927\u80fd\u652f\u6301\u591a\u5c11\u8fde\u63a5<\/h2>\n\n\n\n
\u6211\u4eec\u77e5\u9053TCP\u8fde\u63a5\uff0c\u4ece\u6839\u672c\u4e0a\u770b\u5176\u5b9e\u5c31\u662fclient\u548cserver\u7aef\u5728\u5185\u5b58\u4e2d\u7ef4\u62a4\u7684\u4e00\u7ec4\u3010socket\u5185\u6838\u5bf9\u8c61\u3011\uff08\u8fd9\u91cc\u4e5f\u5bf9\u5e94\u7740TCP\u56db\u5143\u7ec4\uff1a\u6e90IP\u3001\u6e90\u7aef\u53e3\u3001\u76ee\u6807IP\u3001\u76ee\u6807\u7aef\u53e3\uff09\uff0c\u4ed6\u4eec\u53ea\u8981\u80fd\u591f\u627e\u5230\u5bf9\u65b9\uff0c\u90a3\u4e48\u5c31\u7b97\u662f\u4e00\u6761\u8fde\u63a5\u3002\u90a3\u4e48\u4e00\u53f0\u670d\u52a1\u5668\u6700\u5927\u80fd\u5efa\u7acb\u591a\u5c11\u6761\u8fde\u63a5\u5462\uff1f<\/p>\n\n\n\n
\u2022\u7531\u4e8eTCP\u8fde\u63a5\u672c\u8d28\u4e0a\u53ef\u4ee5\u7406\u89e3\u4e3a\u662fclient-server\u7aef\u7684\u4e00\u5bf9socket\u5185\u6838\u5bf9\u8c61\uff0c\u90a3\u4e48\u4ece\u7406\u8bba\u4e0a\u5c06\u5e94\u8be5\u662f\u30102^32 (ip\u6570) * 2^16 (\u7aef\u53e3\u6570)\u3011\u6761\u8fde\u63a5\uff08\u7ea6\u7b49\u4e8e\u4e24\u767e\u591a\u4e07\u4ebf\uff09<\/p>\n\n\n\n
\u2022\u4f46\u662f\u5b9e\u9645\u4e0a\u7531\u4e8e\u53d7\u5176\u4ed6\u8f6f\u786c\u4ef6\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u4e00\u53f0\u670d\u52a1\u5668\u4e0d\u53ef\u80fd\u80fd\u5efa\u7acb\u8fd9\u4e48\u591a\u8fde\u63a5\uff08\u4e3b\u8981\u662f\u53d7CPU\u548c\u5185\u5b58\u9650\u5236\uff09\u3002<\/p>\n\n\n\n
\u5982\u679c\u53ea\u4ee5ESTABLISH\u72b6\u6001\u7684\u8fde\u63a5\u6765\u7b97\uff08\u8fd9\u4e9b\u8fde\u63a5\u53ea\u662f\u5efa\u7acb\uff0c\u4f46\u662f\u4e0d\u6536\u53d1\u6570\u636e\u4e5f\u4e0d\u5904\u7406\u76f8\u5173\u7684\u4e1a\u52a1\u903b\u8f91\uff09\u90a3\u4e48\u4e00\u53f0\u670d\u52a1\u5668\u6700\u5927\u80fd\u5efa\u7acb\u591a\u5c11\u8fde\u63a5\u5462\uff1f\u4ee5\u4e00\u53f04GB\u5185\u5b58\u7684\u670d\u52a1\u5668\u4e3a\u4f8b\uff01<\/p>\n\n\n\n
\u2022\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u90a3\u4e48\u80fd\u5efa\u7acb\u7684\u8fde\u63a5\u6570\u91cf\u4e3b\u8981\u53d6\u51b3\u4e8e\u3010\u5185\u5b58\u7684\u5927\u5c0f\u3011\uff08\u56e0\u4e3a\u5982\u679c\u662f\uff09ESTABLISH\u72b6\u6001\u7684\u7a7a\u95f2\u8fde\u63a5\uff0c\u4e0d\u4f1a\u6d88\u8017CPU\uff08\u867d\u7136\u6709TCP\u4fdd\u6d3b\u5305\u4f20\u8f93\uff0c\u4f46\u8fd9\u4e2a\u5f71\u54cd\u975e\u5e38\u5c0f\uff0c\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\uff09<\/p>\n\n\n\n
\u2022\u6211\u4eec\u77e5\u9053\u4e00\u6761ESTABLISH\u72b6\u6001\u7684\u8fde\u63a5\u5927\u7ea6\u6d88\u8017\u30103.3KB\u5185\u5b58\u3011\uff0c\u90a3\u4e48\u901a\u8fc7\u8ba1\u7b97\u5f97\u77e5\u4e00\u53f04GB\u5185\u5b58\u7684\u670d\u52a1\u5668\uff0c\u3010\u53ef\u4ee5\u5efa\u7acb100w+\u7684TCP\u8fde\u63a5\u3011\uff08\u5f53\u7136\u8fd9\u91cc\u53ea\u662f\u8ba1\u7b97\u6240\u6709\u7684\u8fde\u63a5\u90fd\u53ea\u5efa\u7acb\u8fde\u63a5\u4f46\u4e0d\u53d1\u9001\u548c\u5904\u7406\u6570\u636e\u7684\u60c5\u51b5\uff0c\u5982\u679c\u771f\u5b9e\u573a\u666f\u4e2d\u6709\u6570\u636e\u5f80\u6765\u548c\u5904\u7406\uff08\u6570\u636e\u63a5\u6536\u548c\u53d1\u9001\u90fd\u9700\u8981\u7533\u8bf7\u5185\u5b58\uff0c\u6570\u636e\u5904\u7406\u4fbf\u9700\u8981CPU\uff09\uff0c\u90a3\u4fbf\u4f1a\u6d88\u8017\u66f4\u9ad8\u7684\u5185\u5b58\u4ee5\u53ca\u5360\u7528\u66f4\u591a\u7684CPU\uff0c\u5e76\u53d1\u4e0d\u53ef\u80fd\u8fbe\u5230100w+\uff09<\/p>\n\n\n\n
\u4e0a\u9762\u8ba8\u8bba\u7684\u90fd\u662f\u8fdb\u5efa\u7acb\u8fde\u63a5\u7684\u7406\u60f3\u60c5\u51b5\uff0c\u5728\u73b0\u5b9e\u4e2d\u5982\u679c\u6709\u9891\u7e41\u7684\u6570\u636e\u6536\u53d1\u548c\u5904\u7406\uff08\u6bd4\u5982\uff1a\u538b\u7f29\u3001\u52a0\u5bc6\u7b49\uff09\uff0c\u90a3\u4e48\u4e00\u53f0\u670d\u52a1\u5668\u80fd\u652f\u64911000\u8fde\u63a5\u90fd\u7b97\u597d\u7684\u4e86\uff0c\u6240\u4ee5\u4e00\u53f0\u670d\u52a1\u5668\u80fd\u652f\u6491\u591a\u5c11\u8fde\u63a5\u8fd8\u8981\u7ed3\u5408\u5177\u4f53\u7684\u573a\u666f\u53bb\u5206\u6790\uff0c\u4e0d\u80fd\u5149\u9760\u7406\u8bba\u503c\u53bb\u7b97\u3002\u629b\u5f00\u4e1a\u52a1\u903b\u8f91\u5355\u7eaf\u7684\u8c08\u5e76\u53d1\u6ca1\u6709\u592a\u5927\u7684\u5b9e\u9645\u610f\u4e49\u3002<\/p>\n\n\n\n
\u670d\u52a1\u5668\u7684\u5f00\u9500\u5927\u5934\u5f80\u5f80\u5e76\u4e0d\u662f\u8fde\u63a5\u672c\u8eab\uff0c\u800c\u662f\u6bcf\u6761\u8fde\u63a5\u4e0a\u7684\u6570\u636e\u6536\u53d1\uff0c\u4ee5\u53ca\u8bf7\u6c42\u4e1a\u52a1\u903b\u8f91\u5904\u7406\uff01\uff01\uff01<\/p>\n\n\n\n
\u4e09\u3001\u4e00\u53f0\u5ba2\u6237\u7aef\u673a\u5668\u6700\u591a\u80fd\u53d1\u8d77\u591a\u5c11\u6761\u8fde\u63a5<\/h2>\n\n\n\n
\u6211\u4eec\u77e5\u9053\u5ba2\u6237\u7aef\u6bcf\u548c\u670d\u52a1\u7aef\u5efa\u7acb\u4e00\u4e2a\u8fde\u63a5\u4fbf\u4f1a\u6d88\u8017\u6389client\u7aef\u4e00\u4e2a\u7aef\u53e3\u3002\u4e00\u53f0\u673a\u5668\u7684\u7aef\u53e3\u8303\u56f4\u662f\u30100 ~ 65535\u3011\uff0c\u90a3\u4e48\u662f\u4e0d\u662f\u8bf4\u4e00\u53f0client\u673a\u5668\u6700\u591a\u548c\u4e00\u53f0\u670d\u52a1\u7aef\u673a\u5668\u5efa\u7acb65535\u4e2a\u8fde\u63a5\u5462\uff08\u8fd965535\u4e2a\u7aef\u53e3\u91cc\u8fd8\u6709\u5f88\u591a\u4fdd\u7559\u7aef\u53e3\uff0c\u53ef\u7528\u7aef\u53e3\u53ef\u80fd\u53ea\u670964000\u4e2a\u5de6\u53f3\uff09\uff1f<\/p>\n\n\n\n
\u7531TCP\u8fde\u63a5\u7684\u56db\u5143\u7ec4\u7279\u6027\u53ef\u77e5\uff0c\u53ea\u8981\u56db\u5143\u7ec4\u91cc\u67d0\u4e00\u4e2a\u5143\u7d20\u4e0d\u540c\uff0c\u90a3\u4e48\u5c31\u8ba4\u4e3a\u8fd9\u662f\u4e0d\u540c\u7684TCP\u8fde\u63a5\u3002\u6240\u4ee5\u9700\u8981\u5206\u60c5\u51b5\u8ba8\u8bba\uff1a<\/p>\n\n\n\n
\u2022\u3010\u60c5\u51b5\u4e00\u3011\u3001\u5982\u679c\u4e00\u53f0client\u4ec5\u6709\u4e00\u4e2aIP\uff0cserver\u7aef\u4e5f\u4ec5\u6709\u4e00\u4e2aIP\u5e76\u4e14\u4ec5\u542f\u52a8\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3\u7684\u60c5\u51b5\u4e0b\uff0cclient\u7aef\u548c\u8fd9\u53f0server\u7aef\u6700\u5927\u53ef\u5efa\u7acb\u7684\u8fde\u63a5\u6761\u6570\u5c31\u662f 65535 \u4e2a\u3002<\/p>\n\n\n\n
\u56e0\u4e3a\u6e90IP\u56fa\u5b9a\uff0c\u76ee\u6807IP\u548c\u7aef\u53e3\u56fa\u5b9a\uff0c\u56db\u5143\u7ec4\u4e2d\u552f\u4e00\u53ef\u53d8\u5316\u7684\u5c31\u662f\u3010\u6e90\u7aef\u53e3\u3011\uff0c\u3010\u6e90\u7aef\u53e3\u3011\u7684\u53ef\u7528\u8303\u56f4\u53c8\u662f\u30100 ~ 65535\u3011\uff0c\u6240\u4ee5\u4e00\u53f0client\u673a\u5668\u6700\u5927\u80fd\u5efa\u7acb65535\u4e2a\u8fde\u63a5<\/p>\n\n\n\n
\u2022\u3010\u60c5\u51b5\u4e8c\u3011\u3001\u5982\u679c\u4e00\u53f0client\u6709\u591a\u4e2aIP\uff08\u5047\u8bbe\u5ba2\u6237\u7aef\u6709 n \u4e2aIP\uff09\uff0cserver\u7aef\u4ec5\u6709\u4e00\u4e2aIP\u5e76\u4e14\u4ec5\u542f\u52a8\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3\u7684\u60c5\u51b5\u4e0b\uff0c\u4e00\u53f0client\u673a\u5668\u6700\u5927\u80fd\u5efa\u7acb\u7684\u8fde\u63a5\u6761\u6570\u662f\uff1an * 65535 \u4e2a<\/p>\n\n\n\n
\u56e0\u4e3a\u76ee\u6807IP\u548c\u7aef\u53e3\u56fa\u5b9a\uff0c\u6709 n \u4e2a\u6e90IP\uff0c\u56db\u5143\u7ec4\u4e2d\u53ef\u53d8\u5316\u7684\u5c31\u662f\u3010\u6e90\u7aef\u53e3\u3011+ \u3010\u6e90IP\u3011\uff0c\u3010\u6e90\u7aef\u53e3\u3011\u7684\u53ef\u7528\u8303\u56f4\u53c8\u662f\u30100 ~ 65535\u3011\uff0c\u6240\u4ee5\u4e00\u4e2aIP\u6700\u5927\u80fd\u5efa\u7acb65535\u4e2a\u8fde\u63a5\uff0c\u90a3\u4e48n\u4e2aIP\u6700\u5927\u5c31\u80fd\u5efa\u7acb n * 65535\u4e2a\u8fde\u63a5\u4e86<\/p>\n\n\n\n
\u4ee5\u73b0\u5728\u7684\u6280\u672f\uff0c\u7ed9\u4e00\u4e2aclient\u5206\u914d\u591a\u4e2aIP\u662f\u975e\u5e38\u5bb9\u6613\u7684\u4e8b\u60c5\uff0c\u53ea\u9700\u8981\u53bb\u8054\u7cfb\u4f60\u4eec\u7f51\u7ba1\u5c31\u53ef\u4ee5\u505a\u5230\u3002<\/p>\n\n\n\n
\u2022\u3010\u60c5\u51b5\u4e09\u3011\u3001\u5982\u679c\u4e00\u53f0client\u4ec5\u6709\u4e00\u4e2aIP\uff0cserver\u7aef\u4e5f\u4ec5\u6709\u4e00\u4e2aIP\u4f46\u662fserver\u7aef\u542f\u52a8\u591a\u4e2a\u7a0b\u5e8f\uff0c\u6bcf\u4e2a\u7a0b\u5e8f\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3\u7684\u60c5\u51b5\u4e0b\uff08\u6bd4\u5982server\u7aef\u542f\u52a8\u4e86m\u4e2a\u7a0b\u5e8f\uff0c\u76d1\u542c\u4e86m\u4e2a\u4e0d\u540c\u7aef\u53e3\uff09\uff0c\u4e00\u53f0client\u673a\u5668\u6700\u5927\u80fd\u5efa\u7acb\u7684\u8fde\u63a5\u6570\u91cf\u4e3a\uff1a65535 * m<\/p>\n\n\n\n
\u6e90IP\u56fa\u5b9a\uff0c\u76ee\u6807IP\u56fa\u5b9a\uff0c\u76ee\u6807\u7aef\u53e3\u6570\u91cf\u4e3am\u4e2a\uff0c\u53ef\u53d8\u5316\u7684\u662f\u6e90\u7aef\u53e3\uff0c\u800c\u6e90\u7aef\u53e3\u53d8\u5316\u8303\u56f4\u662f\u30100 ~ 65535\u3011\uff0c\u6240\u4ee5\u4e00\u53f0client\u673a\u5668\u6700\u5927\u80fd\u5efa\u7acb\u7684TCP\u8fde\u63a5\u6570\u91cf\u662f 65535 * m\u4e2a<\/p>\n\n\n\n
\u2022\u5176\u4f59\u60c5\u51b5\u7c7b\u63a8\uff0c\u4f46\u662f\u5ba2\u6237\u7aef\u7684\u53ef\u7528\u7aef\u53e3\u8303\u56f4\u4e00\u822c\u8fbe\u4e0d\u523065535\u4e2a\uff0c\u53d7\u5185\u6838\u53c2\u6570net.ipv4.ip_local_port_range\u9650\u5236\uff0c\u5982\u679c\u8981\u4fee\u6539client\u6240\u80fd\u4f7f\u7528\u7684\u7aef\u53e3\u8303\u56f4\uff0c\u53ef\u4ee5\u4fee\u6539\u8fd9\u4e2a\u5185\u6838\u53c2\u6570\u7684\u503c\u3002<\/p>\n\n\n\n
\u2022\u6240\u4ee5\uff0c\u4e0d\u5149\u662f\u4e00\u53f0server\u7aef\u53ef\u4ee5\u63a5\u6536100w+\u4e2aTCP\u8fde\u63a5\uff0c\u4e00\u53f0client\u7167\u6837\u80fd\u53d1\u51fa100w+\u4e2a\u8fde\u63a5<\/p>\n\n\n\n
\u56db\u3001\u5176\u4ed6<\/h2>\n\n\n\n
\u2022\u4e09\u6b21\u63e1\u624b\u91ccsocket\u7684\u5168\u8fde\u63a5\u961f\u5217\u957f\u5ea6\u7531\u53c2\u6570net.core.somaxconn\u6765\u63a7\u5236\uff0c\u9ed8\u8ba4\u5927\u5c0f\u662f128\uff0c\u5f53\u4e24\u53f0\u673a\u5668\u79bb\u7684\u975e\u5e38\u8fd1\uff0c\u4f46\u662f\u5efa\u7acb\u8fde\u63a5\u7684\u5e76\u53d1\u53c8\u975e\u5e38\u9ad8\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u534a\u8fde\u63a5\u961f\u5217\u6216\u5168\u8fde\u63a5\u961f\u5217\u6ea2\u51fa\uff0c\u8fdb\u800c\u5bfc\u81f4server\u7aef\u4e22\u5f03\u63e1\u624b\u5305\u3002\u7136\u540e\u9020\u6210client\u8d85\u65f6\u91cd\u4f20\u63e1\u624b\u5305\uff08\u81f3\u5c111s\u4ee5\u540e\u624d\u4f1a\u91cd\u4f20\uff09\uff0c\u5bfc\u81f4\u4e09\u6b21\u63e1\u624b\u8fde\u63a5\u5efa\u7acb\u8017\u65f6\u8fc7\u957f\u3002\u6211\u4eec\u53ef\u4ee5\u8c03\u6574\u53c2\u6570net.core.somaxconn\u6765\u589e\u52a0\u53bb\u6309\u8fde\u63a5\u961f\u5217\u7684\u957f\u5ea6\uff0c\u8fdb\u800c\u51cf\u5c0f\u4e22\u5305\u7684\u5f71\u54cd<\/p>\n\n\n\n
\u2022\u6709\u65f6\u5019\u6211\u4eec\u901a\u8fc7 ctrl + c\u65b9\u5f0f\u6765\u7ec8\u6b62\u4e86\u67d0\u4e2a\u8fdb\u7a0b\uff0c\u4f46\u662f\u5f53\u91cd\u542f\u8be5\u8fdb\u7a0b\u7684\u65f6\u5019\u53d1\u73b0\u62a5\u9519\u7aef\u53e3\u88ab\u5360\u7528\uff0c\u8fd9\u79cd\u95ee\u9898\u662f\u56e0\u4e3a\u3010\u64cd\u4f5c\u7cfb\u7edf\u8fd8\u6ca1\u6709\u6765\u5f97\u53ca\u56de\u6536\u8be5\u7aef\u53e3\uff0c\u7b49\u4e00\u4f1a\u513f\u91cd\u542f\u5e94\u7528\u5c31\u597d\u4e86\u3011<\/p>\n\n\n\n
\u2022client\u7a0b\u5e8f\u5728\u548cserver\u7aef\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u5982\u679cclient\u6ca1\u6709\u8c03\u7528bind\u65b9\u6cd5\u4f20\u5165\u6307\u5b9a\u7684\u7aef\u53e3\uff0c\u90a3\u4e48client\u5728\u548cserver\u7aef\u5efa\u7acb\u8fde\u63a5\u7684\u65f6\u5019\u4fbf\u4f1a\u81ea\u5df1\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u7aef\u53e3\u6765\u5efa\u7acb\u8fde\u63a5\u3002\u4e00\u65e6\u6211\u4eecclient\u7a0b\u5e8f\u8c03\u7528\u4e86bind\u65b9\u6cd5\u4f20\u5165\u4e86\u6307\u5b9a\u7684\u7aef\u53e3\uff0c\u90a3\u4e48client\u5c06\u4f1a\u4f7f\u7528\u6211\u4eecbind\u91cc\u6307\u5b9a\u7684\u7aef\u53e3\u6765\u548cserver\u5efa\u7acb\u8fde\u63a5\u3002\u6240\u4ee5\u4e0d\u5efa\u8baeclient\u8c03\u7528bind\u65b9\u6cd5\uff0cbind\u51fd\u6570\u4f1a\u6539\u53d8\u5185\u6838\u9009\u62e9\u7aef\u53e3\u7684\u7b56\u7565<\/p>\n\n\n\n
<\/p>\n\n\n\n
\u2022\u5728Linux\u4e00\u5207\u7686\u6587\u4ef6\uff0c\u5f53\u7136\u4e5f\u5305\u62ec\u4e4b\u524dTCP\u8fde\u63a5\u4e2d\u8bf4\u7684socket\u3002\u8fdb\u7a0b\u6253\u5f00\u4e00\u4e2asocket\u7684\u65f6\u5019\u9700\u8981\u521b\u5efa\u597d\u51e0\u4e2a\u5185\u6838\u5bf9\u8c61\uff0c\u6362\u4e00\u53e5\u76f4\u767d\u7684\u8bdd\u8bf4\u5c31\u662f\u6253\u5f00\u6587\u4ef6\u5bf9\u8c61\u5403\u5185\u5b58\uff0c\u6240\u4ee5Linux\u7cfb\u7edf\u57fa\u4e8e\u5b89\u5168\u89d2\u5ea6\u8003\u8651\uff08\u6bd4\u5982\uff1a\u6709\u7528\u6237\u8fdb\u7a0b\u6076\u610f\u7684\u6253\u5f00\u65e0\u6570\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u90a3\u4e0d\u5f97\u628a\u7cfb\u7edf\u641e\u5954\u6e83\u4e86\uff09\uff0c\u5728\u591a\u4e2a\u4f4d\u7f6e\u90fd\u9650\u5236\u4e86\u53ef\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u6570\u91cf\u3002<\/p>\n\n\n\n
\u2022\u5185\u6838\u662f\u901a\u8fc7\u3010hash\u8868\u3011\u7684\u65b9\u5f0f\u6765\u7ba1\u7406\u6240\u6709\u5df2\u7ecf\u5efa\u7acb\u597d\u8fde\u63a5\u7684socket\uff0c\u4ee5\u4fbf\u4e8e\u6709\u8bf7\u6c42\u5230\u8fbe\u65f6\u5feb\u901f\u7684\u901a\u8fc7\u3010TCP\u56db\u5143\u7ec4\u3011\u67e5\u627e\u5230\u5185\u6838\u4e2d\u5bf9\u5e94\u7684socket\u5bf9\u8c61<\/p>\n\n\n\n
\u5728epoll\u6a21\u578b\u4e2d\uff0c\u901a\u8fc7\u7ea2\u9ed1\u6811\u6765\u7ba1\u7406epoll\u5bf9\u8c61\u6240\u7ba1\u7406\u7684\u6240\u6709socket\uff0c\u7528\u7ea2\u9ed1\u6811\u7ed3\u6784\u6765\u5e73\u8861\u5feb\u901f\u5220\u9664\u3001\u63d2\u5165\u3001\u67e5\u627esocket\u7684\u6548\u7387<\/p>\n\n\n\n
\u4e94\u3001\u76f8\u5173\u5b9e\u9645\u95ee\u9898<\/h2>\n\n\n\n
\u5728\u7f51\u7edc\u5f00\u53d1\u4e2d\uff0c\u5f88\u591a\u4eba\u5bf9\u4e00\u4e2a\u57fa\u7840\u95ee\u9898\u59cb\u7ec8\u6ca1\u6709\u5f7b\u5e95\u641e\u660e\u767d\uff0c\u90a3\u5c31\u662f\u4e00\u53f0\u673a\u5668\u6700\u591a\u80fd\u652f\u6491\u591a\u5c11\u6761TCP\u8fde\u63a5\u3002\u4e0d\u8fc7\u7531\u4e8e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u5bf9\u7aef\u53e3\u4f7f\u7528\u65b9\u5f0f\u4e0d\u540c\uff0c\u8fd9\u4e2a\u95ee\u9898\u62c6\u5f00\u6765\u7406\u89e3\u8981\u5bb9\u6613\u4e00\u4e9b\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff0c\u8fd9\u91cc\u8bf4\u7684\u662f\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u90fd\u53ea\u662f\u89d2\u8272\uff0c\u5e76\u4e0d\u662f\u6307\u67d0\u4e00\u53f0\u5177\u4f53\u7684\u673a\u5668\u3002\u4f8b\u5982\u5bf9\u4e8e\u6211\u4eec\u81ea\u5df1\u5f00\u53d1\u7684\u5e94\u7528\u7a0b\u5e8f\u6765\u8bf4\uff0c\u5f53\u4ed6\u54cd\u5e94\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u4ed6\u5c31\u662f\u670d\u52a1\u7aef\u3002\u5f53\u4ed6\u5411MySQL\u8bf7\u6c42\u6570\u636e\u7684\u65f6\u5019\uff0c\u4ed6\u53c8\u53d8\u6210\u4e86\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n
1\u3001\"too many open files\" \u62a5\u9519\u662f\u600e\u4e48\u56de\u4e8b\uff0c\u8be5\u5982\u4f55\u89e3\u51b3<\/h3>\n\n\n\n
\u4f60\u5728\u7ebf\u4e0a\u53ef\u80fd\u9047\u5230\u8fc7too many open files\u8fd9\u4e2a\u9519\u8bef\uff0c\u90a3\u4e48\u4f60\u7406\u89e3\u8fd9\u4e2a\u62a5\u9519\u53d1\u751f\u7684\u539f\u7406\u5417\uff1f\u5982\u679c\u8ba9\u4f60\u4fee\u590d\u8fd9\u4e2a\u9519\u8bef\uff0c\u5e94\u8be5\u5982\u4f55\u5904\u7406\u5462\uff1f<\/p>\n\n\n\n
\u2022\u56e0\u4e3a\u6bcf\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6\uff08\u5305\u62ecsocket\uff09\uff0c\u90fd\u9700\u8981\u6d88\u8017\u4e00\u5b9a\u7684\u5185\u5b58\u8d44\u6e90\u3002\u4e3a\u4e86\u907f\u514d\u4e2a\u522b\u8fdb\u7a0b\u4e0d\u53d7\u63a7\u5236\u7684\u6253\u5f00\u4e86\u8fc7\u591a\u6587\u4ef6\u800c\u8ba9\u6574\u4e2a\u670d\u52a1\u5668\u5954\u6e83\uff0cLinux\u5bf9\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u6709\u9650\u5236\u3002\u5982\u679c\u4f60\u7684\u8fdb\u7a0b\u89e6\u53d1\u5230\u5185\u6838\u7684\u9650\u5236\uff0c\u90a3\u4e48\"too many open files\" \u62a5\u9519\u5c31\u4ea7\u751f\u4e86<\/p>\n\n\n\n
\u2022\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539fs.file-max \u3001soft nofile\u3001fs.nr_open\u8fd9\u4e09\u4e2a\u53c2\u6570\u7684\u503c\u6765\u4fee\u6539\u8fdb\u7a0b\u80fd\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf<\/p>\n\n\n\n
\u9700\u8981\u6ce8\u610f\u8fd9\u4e09\u4e2a\u53c2\u6570\u4e4b\u95f4\u7684\u8026\u5408\u5173\u7cfb\uff01<\/p>\n\n\n\n
2\u3001\u4e00\u53f0\u670d\u52a1\u7aef\u673a\u5668\u6700\u5927\u7a76\u7adf\u80fd\u652f\u6301\u591a\u5c11\u6761\u8fde\u63a5<\/h3>\n\n\n\n
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