{"id":136404,"date":"2023-03-17T20:01:49","date_gmt":"2023-03-17T12:01:49","guid":{"rendered":"http:\/\/www.idc.net\/help\/136404\/"},"modified":"2023-03-17T20:01:49","modified_gmt":"2023-03-17T12:01:49","slug":"%e6%8e%8c%e6%8f%a1linux-tcp-%e7%aa%97%e5%8f%a3%e8%ae%be%e7%bd%ae%ef%bc%8c%e6%8f%90%e9%ab%98%e7%bd%91%e7%bb%9c%e4%bc%a0%e8%be%93%e6%95%88%e7%8e%87-linux-tcp-%e7%aa%97%e5%8f%a3%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/136404\/","title":{"rendered":"\u638c\u63e1Linux TCP \u7a97\u53e3\u8bbe\u7f6e\uff0c\u63d0\u9ad8\u7f51\u7edc\u4f20\u8f93\u6548\u7387 (linux tcp \u7a97\u53e3\u8bbe\u7f6e)"},"content":{"rendered":"<p>Linux \u7cfb\u7edf\u4e2d\u7684 TCP \u534f\u8bae\u662f\u7f51\u7edc\u4f20\u8f93\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u5b83\u8d1f\u8d23\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93\u6570\u636e\u5e76\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u6027\u548c\u6b63\u786e\u6027\u3002TCP \u7a97\u53e3\u5927\u5c0f\u5c31\u662f TCP \u534f\u8bae\u4e2d\u7684\u4e00\u4e2a\u53c2\u6570\uff0c\u638c\u63e1 TCP \u7a97\u53e3\u8bbe\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u3002\u672c\u6587\u5c06\u4ecb\u7ecd Linux TCP \u7a97\u53e3\u8bbe\u7f6e\u7684\u76f8\u5173\u77e5\u8bc6\u53ca\u5176\u4f18\u5316\u65b9\u5f0f\u3002<\/p>\n<p>\u4e00\u3001TCP \u7a97\u53e3\u5927\u5c0f\u7684\u4f5c\u7528<\/p>\n<p>TCP \u7a97\u53e3\u5927\u5c0f\u63a7\u5236\u6bcf\u6b21\u4f20\u8f93\u6570\u636e\u7684\u91cf\uff0c\u7a97\u53e3\u8d8a\u5927\uff0c\u6bcf\u6b21\u4f20\u8f93\u7684\u6570\u636e\u91cf\u5c31\u8d8a\u5927\uff0c\u4f20\u8f93\u6548\u7387\u4e5f\u5c31\u8d8a\u9ad8\u3002\u4f46\u662f\u7a97\u53e3\u5927\u5c0f\u8fc7\u5927\u4e5f\u4f1a\u5bfc\u81f4\u7f51\u7edc\u62e5\u585e\uff0c\u4f20\u8f93\u6548\u7387\u53cd\u800c\u4f1a\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u5728\u8bbe\u7f6e TCP \u7a97\u53e3\u5927\u5c0f\u65f6\u9700\u8981\u6839\u636e\u7f51\u7edc\u5e26\u5bbd\u548c\u4f20\u8f93\u8ddd\u79bb\u7b49\u56e0\u7d20\u8fdb\u884c\u5408\u7406\u8c03\u6574\u3002<\/p>\n<p>\u4e8c\u3001Linux \u4e2d\u7684 TCP \u7a97\u53e3\u8bbe\u7f6e\u65b9\u5f0f<\/p>\n<p>Linux \u4e2d\u901a\u8fc7\u4fee\u6539\u7cfb\u7edf\u5185\u6838\u53c2\u6570\u6765\u8bbe\u7f6e TCP \u7a97\u53e3\u5927\u5c0f\u3002\u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<p>1. \u6253\u5f00 \/etc\/sysctl.conf \u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<p>2. \u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<p>\u201c`<\/p>\n<p># \u8bbe\u7f6e TCP \u7a97\u53e3\u5927\u5c0f<\/p>\n<p>net.core.rmem_max = 16777216<\/p>\n<p>net.core.wmem_max = 16777216<\/p>\n<p>net.ipv4.tcp_rmem = 4096 87380 16777216<\/p>\n<p>net.ipv4.tcp_wmem = 4096 65536 16777216<\/p>\n<p>\u201c`<\/p>\n<p>\u5176\u4e2d\uff0cnet.core.rmem_max \u548c net.core.wmem_max \u8868\u793a\u7cfb\u7edf\u4e2d\u6bcf\u4e2a socket \u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f\u7684\u66f4\u5927\u503c\uff0c\u5355\u4f4d\u4e3a\u5b57\u8282\uff1bnet.ipv4.tcp_rmem \u548c net.ipv4.tcp_wmem \u8868\u793a TCP \u534f\u8bae\u4e2d\u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u7684\u9ed8\u8ba4\u3001\u6700\u5c0f\u548c\u66f4\u5927\u503c\uff0c\u5355\u4f4d\u4e3a\u5b57\u8282\u3002<\/p>\n<p>3. \u6267\u884c\u547d\u4ee4\u4f7f\u914d\u7f6e\u6587\u4ef6\u751f\u6548\uff1a<\/p>\n<p>\u201c`<\/p>\n<p>$ sudo sysctl -p<\/p>\n<p>\u201c`<\/p>\n<p>\u4e09\u3001\u4f18\u5316 Linux TCP \u7a97\u53e3\u8bbe\u7f6e<\/p>\n<p>1. \u6839\u636e\u7f51\u7edc\u5e26\u5bbd\u548c\u4f20\u8f93\u8ddd\u79bb\u8c03\u6574\u7a97\u53e3\u5927\u5c0f<\/p>\n<p>TCP \u7a97\u53e3\u5927\u5c0f\u7684\u5408\u7406\u8bbe\u7f6e\u9700\u8981\u6839\u636e\u7f51\u7edc\u5e26\u5bbd\u548c\u4f20\u8f93\u8ddd\u79bb\u7b49\u56e0\u7d20\u8fdb\u884c\u8003\u8651\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u53ef\u6839\u636e\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97 TCP \u7a97\u53e3\u5927\u5c0f\uff1a<\/p>\n<p>\u201c`<\/p>\n<p>\u7a97\u53e3\u5927\u5c0f (byte) = \u5e26\u5bbd (bit\/s) * \u5f80\u8fd4\u5ef6\u65f6 (s) \/ 8<\/p>\n<p>\u201c`<\/p>\n<p>\u5176\u4e2d\uff0c\u5e26\u5bbd\u4ee5\u4f4d\u6bcf\u79d2 (bit\/s) \u8868\u793a\uff0c\u5f80\u8fd4\u5ef6\u65f6\u4ee5\u79d2 (s) \u8868\u793a\u3002<\/p>\n<p>2. \u542f\u7528 TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5<\/p>\n<p>TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5\u53ef\u4ee5\u81ea\u52a8\u5730\u8c03\u6574 TCP \u7a97\u53e3\u5927\u5c0f\uff0c\u6839\u636e\u7f51\u7edc\u62e5\u585e\u60c5\u51b5\u52a8\u6001\u8c03\u6574\u4f20\u8f93\u901f\u7387\uff0c\u4ee5\u4fdd\u8bc1\u4f20\u8f93\u6548\u7387\u548c\u7f51\u7edc\u5bb9\u91cf\u4e4b\u95f4\u7684\u5e73\u8861\u3002Linux \u4e2d\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u53c2\u6570\u542f\u7528 TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5\uff0c\u5177\u4f53\u64cd\u4f5c\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p>1. \u6253\u5f00 \/etc\/sysctl.conf \u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<p>2. \u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<p>\u201c`<\/p>\n<p># \u542f\u7528 TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5<\/p>\n<p>net.ipv4.tcp_window_scaling = 1<\/p>\n<p>net.ipv4.tcp_moderate_rcvbuf = 1<\/p>\n<p>\u201c`<\/p>\n<p>\u5176\u4e2d\uff0cnet.ipv4.tcp_window_scaling \u8868\u793a\u662f\u5426\u542f\u7528 TCP \u7a97\u53e3\u7f29\u653e\u529f\u80fd\uff0c\u503c\u4e3a 1 \u8868\u793a\u542f\u7528\uff1bnet.ipv4.tcp_moderate_rcvbuf \u8868\u793a\u662f\u5426\u542f\u7528 TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5\uff0c\u503c\u4e3a 1 \u8868\u793a\u542f\u7528\u3002<\/p>\n<p>3. \u6267\u884c\u547d\u4ee4\u4f7f\u914d\u7f6e\u6587\u4ef6\u751f\u6548\uff1a<\/p>\n<p>\u201c`<\/p>\n<p>$ sudo sysctl -p<\/p>\n<p>\u201c`<\/p>\n<p>\u56db\u3001<\/p>\n<p>TCP \u7a97\u53e3\u5927\u5c0f\u662f\u7f51\u7edc\u4f20\u8f93\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u53c2\u6570\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u6765\u63d0\u9ad8\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u3002Linux \u4e2d\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u53c2\u6570\u6765\u8bbe\u7f6e TCP \u7a97\u53e3\u5927\u5c0f\u548c\u542f\u7528 TCP \u7a97\u53e3\u81ea\u9002\u5e94\u7b97\u6cd5\u3002\u5728\u8bbe\u7f6e TCP \u7a97\u53e3\u5927\u5c0f\u65f6\u9700\u8981\u6839\u636e\u7f51\u7edc\u5e26\u5bbd\u548c\u4f20\u8f93\u8ddd\u79bb\u7b49\u56e0\u7d20\u8fdb\u884c\u5408\u7406\u8c03\u6574\uff0c\u4ee5\u5145\u5206\u53d1\u6325 TCP \u7a97\u53e3\u5927\u5c0f\u7684\u4f18\u52bf\u3002<\/p>\n<p><strong>\u76f8\u5173\u95ee\u9898\u62d3\u5c55\u9605\u8bfb\uff1a<\/strong><\/p>\n<ul>\n<li>Linux\u589e\u52a0TCP\u548cUDP\u7684\u672c\u5730\u7aef\u53e3\u5206\u914d\u8303\u56f4<\/li>\n<\/ul>\n<h3>Linux\u589e\u52a0TCP\u548cUDP\u7684\u672c\u5730\u7aef\u53e3\u5206\u914d\u8303\u56f4<\/h3>\n<p>ip_local_port_range\uff0cTCP\u548cUDP\u672c\u5730\u7aef\u53e3\u8303\u56f4\uff0c\u9ed8\u8ba4\u6850\u778e\u51b2\u4e3a\u795e\u88c2\uff0c\u5176\u4e2d\uff0c\u6700\u5c0f\u503c\u8981\u6c42\u5927\u4e8e\u7b49\u4e8eip_unprivileged_port_start\u53c2\u6570\u3002<\/p>\n<\/p>\n<p> ip_unprivileged_port_start\uff0c\u975e\u7279\u6743\u7aef\u53e3\u5f00\u59cb\u503c\uff0c\u9ed8\u8ba4\u4e3a1024.\u5982\u679c\u5e94\u5c40\u6b7c\u7528\u7a0b\u5e8f\u9700\u8981\u7ed1\u5b9a\u5c0f\u4e8e\u6b64\u503c\u7684\u7aef\u53e3\u53f7\uff0c\u9700\u8981root\u6743\u9650\u3002<\/p>\n<p> \u4e34\u65f6\u8c03\u6574<\/p>\n<p> \u6c38\u4e45\u8c03\u6574<\/p>\n<p> \u5728\/etc\/sysctl.d\u76ee\u5f55\u4e0b\uff0c\u521b\u5efa\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06\u9700\u8981\u8c03\u6574\u7684\u53c2\u6570\u52a0\u5165\u5176\u4e2d\u5373\u53ef\u3002\u914d\u7f6e\u6587\u4ef6\u540d\u683c\u5f0f\u4e3a-.conf\u3002appname\u53ef\u4ee5\u76f4\u63a5\u7528\u5e94\u7528\u7cfb\u7edf\u8fd0\u884c\u65f6\u7684os\u7528\u6237\u540d\u3002<\/p>\n<p> \u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff0c\u4f7f\u4e4b\u751f\u6548\u3002\u66ff\u6362\u6389\u547d\u4ee4\u4e2d\u7684\u6587\u4ef6\u540d\u3002<\/p>\n<p>\u5173\u4e8elinux tcp \u7a97\u53e3\u8bbe\u7f6e\u7684\u4ecb\u7ecd\u5230\u6b64\u5c31\u7ed3\u675f\u4e86\uff0c\u4e0d\u77e5\u9053\u4f60\u4ece\u4e2d\u627e\u5230\u4f60\u9700\u8981\u7684\u4fe1\u606f\u4e86\u5417 \uff1f\u5982\u679c\u4f60\u8fd8\u60f3\u4e86\u89e3\u66f4\u591a\u8fd9\u65b9\u9762\u7684\u4fe1\u606f\uff0c\u8bb0\u5f97\u6536\u85cf\u5173\u6ce8\u672c\u7ad9\u3002<\/p>\n<p><a href=\"http:https:\/\/idc.net\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u9996\u9009\u540e\u6d6a\u4e91\uff0c2H2G\u9996\u670810\u5143\u5f00\u901a\u3002<br \/>\u540e\u6d6a\u4e91\uff08www.IDC.Net\uff09\u63d0\u4f9b\u7b80\u5355\u597d\u7528\uff0c\u4ef7\u683c\u539a\u9053\u7684\u9999\u6e2f\/\u7f8e\u56fd\u4e91\u670d\u52a1\u5668\u548c\u72ec\u7acb\u670d\u52a1\u5668\u3002IDC+ISP+ICP\u8d44\u8d28\u3002ARIN\u548cAPNIC\u4f1a\u5458\u3002\u6210\u719f\u6280\u672f\u56e2\u961f15\u5e74\u884c\u4e1a\u7ecf\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u7cfb\u7edf\u4e2d\u7684 TCP \u534f\u8bae\u662f\u7f51\u7edc\u4f20\u8f93\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u5b83\u8d1f\u8d23\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93\u6570\u636e\u5e76\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u6027 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-136404","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/136404","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=136404"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/136404\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=136404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=136404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=136404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}