{"id":62768,"date":"2025-04-29T12:10:21","date_gmt":"2025-04-29T04:10:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62768\/"},"modified":"2025-04-29T12:10:21","modified_gmt":"2025-04-29T04:10:21","slug":"%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96linux%e7%b3%bb%e7%bb%9f%e7%9a%84tcp-ip%e6%80%a7%e8%83%bd%e5%92%8c%e7%bd%91%e7%bb%9c%e6%80%a7%e8%83%bd-3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62768\/","title":{"rendered":"\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684TCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd"},"content":{"rendered":"

\"\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684TCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd\u63d2\u56fe\"<\/p>\n

\u5728\u73b0\u4ee3\u8ba1\u7b97\u673a\u9886\u57df\uff0cTCP\/IP\u534f\u8bae\u662f\u5b9e\u73b0\u7f51\u7edc\u901a\u4fe1\u7684\u57fa\u7840\u3002Linux\u4f5c\u4e3a\u5f00\u653e\u6e90\u4ee3\u7801\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5df2\u6210\u4e3a\u8bb8\u591a\u4f01\u4e1a\u548c\u7ec4\u7ec7\u4f7f\u7528\u7684\u9996\u9009\u64cd\u4f5c\u7cfb\u7edf\u3002\u7136\u800c\uff0c\u968f\u7740\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u548c\u670d\u52a1\u8d8a\u6765\u8d8a\u6210\u4e3a\u4e1a\u52a1\u7684\u5173\u952e\u7ec4\u6210\u90e8\u5206\uff0c\u7ba1\u7406\u5458\u5f80\u5f80\u9700\u8981\u4f18\u5316\u7f51\u7edc\u6027\u80fd\uff0c\u4ee5\u786e\u4fdd\u5feb\u901f\u548c\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u3002<\/p>\n

\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7\u5bf9Linux\u7cfb\u7edf\u8fdb\u884cTCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u6765\u63d0\u9ad8Linux\u7cfb\u7edf\u7684\u7f51\u7edc\u4f20\u8f93\u901f\u5ea6\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u4e00\u4e9b\u5fc5\u8981\u7684TCP\u53c2\u6570\uff0c\u4ee5\u53ca\u5982\u4f55\u66f4\u6539\u8fd9\u4e9b\u53c2\u6570\u4ee5\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u3002\u672c\u6587\u8fd8\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u4e00\u4e9b\u5e38\u7528\u7684CLI\u548c\u5185\u6838\u5de5\u5177\u6765\u68c0\u67e5\u7cfb\u7edf\u4e2d\u7684\u7f51\u7edc\u6027\u80fd\uff0c\u5e76\u4e3a\u8bfb\u8005\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001\u4e86\u89e3tcp tw_reuse<\/p>\n

TCP\u8fde\u63a5\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u4f20\u8f93\u534f\u8bae\uff0c\u56e0\u6b64IP\u5730\u5740\u548c\u7aef\u53e3\u7ec4\u5408\u5fc5\u987b\u4e0d\u540c\u624d\u80fd\u521b\u5efa\u65b0\u8fde\u63a5\u3002\u5728\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u5df2\u7ecf\u5173\u95ed\uff0c\u4f46Linux\u4ecd\u5728\u7b49\u5f85\u53ef\u80fd\u6700\u8fd1\u521b\u5efa\u8fde\u63a5\u7684\u4e00\u6bb5\u65f6\u95f4\u4e4b\u540e\uff0c\u4f1a\u5c1d\u8bd5\u5efa\u7acbtcp\u8fde\u63a5\u3002\u8fd9\u4e00\u65f6\u95f4\u6bb5\u88ab\u79f0\u4e3a\u201cTIME_WAIT\u201d\u72b6\u6001\uff0c\u6b64\u72b6\u6001\u4e0b\u7684\u8fde\u63a5\u4e0d\u80fd\u88ab\u590d\u7528\u3002\u8fd9\u79cd\u884c\u4e3a\u4f1a\u51cf\u7f13\u670d\u52a1\u5668\u7684TCP\/IP\u6027\u80fd\u3002<\/p>\n

\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528tw_reuse\u53c2\u6570\u3002\u542f\u7528tw_reuse\u53ef\u4ee5\u5141\u8bb8\u5df2\u7ecf\u9000\u51fa\u7684\u8fde\u63a5\u88ab\u91cd\u7528\uff0c\u800c\u65e0\u9700\u7b49\u5f85\u4e00\u5b9a\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u542f\u7528\u8be5\u53c2\u6570\uff1a<\/p>\n

echo 1 &gt;\/proc\/sys\/net\/ipv4\/tcp_tw_reuse\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e8c\u3001\u9002\u5f53\u8c03\u6574TCP keepalive\u53c2\u6570<\/p>\n
TCP keepalive\u662f\u4e00\u79cd\u673a\u5236\uff0c\u80fd\u591f\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u4ecd\u7136\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u4ee5\u53ca\u9632\u6b62\u7531\u4e8e\u7f51\u7edc\u62e5\u585e\u95ee\u9898\u9020\u6210\u8fde\u63a5\u4e22\u5931\u3002TCP keepalive\u5b9a\u671f\u68c0\u67e5\u8fde\u63a5\u72b6\u6001\uff0c\u4ee5\u786e\u5b9a\u8fde\u63a5\u662f\u5426\u4ecd\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u5219\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n
\u8c03\u6574TCP keepalive\u53c2\u6570\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e09\u4e2a\u91cd\u8981\u7684TCP\u53c2\u6570\uff1a<\/p>\n
1.tcp_keepalive_time<\/p>\n
tcp_keepalive_time\u53c2\u6570\u5b9a\u4e49\u5728\u53d1\u9001\u4fdd\u6301\u6d3b\u52a8\u200b\u200b\u62a5\u6587\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u3002\u5982\u679c\u7f51\u7edc\u4e2d\u7684\u4e00\u4e2a\u8282\u70b9\u65e0\u6cd5\u54cd\u5e94\uff0c\u5219keepalive\u673a\u5236\u4f1a\u5c1d\u8bd5\u91cd\u65b0\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n
\u9ed8\u8ba4\u503c\u4e3a7200\u79d2\uff08\u53732\u5c0f\u65f6\uff09<\/p>\n
2.tcp_keepalive_intvl<\/p>\n
tcp_keepalive_intvl\u53c2\u6570\u5b9a\u4e49\u4e86\u53d1\u9001\u4fdd\u6301\u6d3b\u52a8\u62a5\u6587\u4e4b\u540e\u7684\u91cd\u8bd5\u65f6\u95f4\u95f4\u9694\u3002<\/p>\n
\u9ed8\u8ba4\u503c\u4e3a75\u79d2<\/p>\n
3.tcp_keepalive_probes<\/p>\n
tcp_keepalive_probes\u5b9a\u4e49\u4e86\u5728\u53d1\u9001keepalive\u62a5\u6587\u4e4b\u524d\u8fdb\u884c\u51e0\u6b21TCP\u63a2\u6d4b\u3002<\/p>\n
\u9ed8\u8ba4\u503c\u4e3a9\u6b21<\/p>\n
\u53ef\u4ee5\u66f4\u6539\u8fd9\u4e9b\u53c2\u6570\u4ee5\u63d0\u9ad8TCP\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u66f4\u6539\u4ee5\u4e0a\u4e09\u4e2a\u53c2\u6570\u7684\u547d\u4ee4\uff1a<\/p>\n
echo 600 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_time\necho 30 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_intvl\necho 5 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_probes\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e09\u3001\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879<\/p>\n
TCP\u7a97\u53e3\u6269\u5c55\uff08TCP Window Scaling\uff09\u662f\u4e00\u79cd\u6269\u5c55TCP\u5934\u90e8\u7684\u9009\u9879\uff0c\u4ee5\u652f\u6301\u9ad8\u901f\u7f51\u7edc\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cLinux\u5185\u6838\u4f1a\u81ea\u52a8\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879\uff0c\u4f46\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u8f83\u65e7\u7248\u672c\u7684\u5185\u6838\uff0c\u5219\u53ef\u80fd\u9700\u8981\u542f\u7528\u8be5\u9009\u9879\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879\u7684\u547d\u4ee4\uff1a<\/p>\n
echo 1 &gt;\/proc\/sys\/net\/ipv4\/tcp_window_scaling\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u56db\u3001\u4f7f\u7528ifconfig\u8c03\u6574MTU\u548cMRU\u503c<\/p>\n
MTU\uff08\u6700\u5927\u4f20\u8f93\u5355\u5143\uff09\u662f\u6570\u636e\u5305\u53ef\u4ee5\u4f20\u8f93\u7684\u6700\u5927\u5927\u5c0f\uff0c\u800cMRU\uff08\u6700\u5927\u63a5\u6536\u5355\u5143\uff09\u662f\u63a5\u6536\u7aef\u6240\u80fd\u63a5\u6536\u7684\u6700\u5927\u6570\u636e\u5305\u5927\u5c0f\u3002<\/p>\n
\u66f4\u6539MTU\u548cMRU\u503c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ifconfig\u547d\u4ee4\u6765\u66f4\u6539\u8fd9\u4e9b\u503c\u3002\u4ee5\u4e0b\u662f\u66f4\u6539MTU\u548cMRU\u7684\u547d\u4ee4\uff1a<\/p>\n
ifconfig eth0 mtu 9000\nifconfig eth0 mru 9000\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e94\u3001\u4f7f\u7528iperf3\u6d4b\u8bd5\u7f51\u7edc\u6027\u80fd<\/p>\n
iperf3\u662f\u4e00\u79cd\u6d41\u91cf\u68c0\u6d4b\u548c\u7f51\u7edc\u670d\u52a1\u8d28\u91cf\u6d4b\u8bd5\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u7ba1\u7406\u5458\u6d4b\u91cf\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\uff0c\u5e76\u68c0\u67e5\u7f51\u7edc\u62e5\u585e\u60c5\u51b5\u3002\u4f7f\u7528iperf3\u53ef\u4ee5\u5feb\u901f\u53d1\u73b0\u7f51\u7edc\u7684\u74f6\u9888\uff0c\u4ee5\u4fbf\u8fdb\u884c\u8c03\u4f18\u3002<\/p>\n
\u9996\u5148\uff0c\u5728\u670d\u52a1\u5668\u7aef\u542f\u52a8iperf3\u3002\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u542f\u52a8\u4e00\u4e2aTCP\u670d\u52a1\u5668\uff0c\u4ee5\u4fa6\u542c\u9ed8\u8ba4\u7aef\u53e3\uff1a<\/p>\n
iperf3 -s\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u7136\u540e\uff0c\u5728\u5ba2\u6237\u7aef\u4e0a\u8fd0\u884ciperf3\uff0c\u4ee5\u6d4b\u8bd5\u7f51\u7edc\u4fe1\u606f\u7684\u5e7f\u64ad\u901f\u5ea6\u3002\u5bf9\u4e8eTCP\u6d4b\u8bd5\uff0c\u60a8\u53ef\u4ee5\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
iperf3 -c <server-ip><\/server-ip><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u516d\u3001\u4f7f\u7528netstat\u547d\u4ee4\u76d1\u63a7\u7f51\u7edc\u6027\u80fd<\/p>\n
netstat\u547d\u4ee4\u662f\u4e00\u4e2a\u5e38\u7528\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u53ef\u7528\u4e8e\u68c0\u67e5Linux\u7cfb\u7edf\u4e2d\u7684\u7f51\u7edc\u8fde\u63a5\u548c\u4f20\u8f93\u6027\u80fd\u3002<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u68c0\u67e5Linux\u7cfb\u7edf\u4e2d\u7684TCP\u8fde\u63a5\u6570\u548c\u72b6\u6001\uff1a<\/p>\n
netstat -nat | grep -i \"tcp.*established\"\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8be5\u547d\u4ee4\u5c06\u8fd4\u56de\u5f53\u524d\u5efa\u7acb\u7684TCP\u8fde\u63a5\u7684\u6570\u91cf\u3002\u5efa\u7acb\u7684\u8fde\u63a5\u6570\u91cf\u8d8a\u591a\uff0c\u7cfb\u7edf\u7684TCP\/IP\u6027\u80fd\u5c31\u4f1a\u8d8a\u4f4e\u3002<\/p>\n
\u4e03\u3001\u4f7f\u7528sysctl\u67e5\u770bTCP\/IP\u53c2\u6570<\/p>\n
sysctl\u662f\u4e00\u4e2a\u7ba1\u7406\u5185\u6838\u53c2\u6570\u7684CLI\u5b9e\u7528\u7a0b\u5e8f\u3002\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u67e5\u770b\u548c\u66f4\u6539TCP\/IP\u53c2\u6570\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u67e5\u770bTCP\/IP\u53c2\u6570\u7684\u547d\u4ee4\uff1a<\/p>\n
sysctl -a | grep tcp\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u8981\u66f4\u6539\u8fd9\u4e9b\u53c2\u6570\uff0c\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sysctl -w <parameter><\/parameter><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4f8b\u5982\uff0c\u4ee5\u4e0b\u547d\u4ee4\u5c06\u66f4\u6539TCP\u5806\u6808\u7684\u6700\u5927\u5185\u5b58\u538b\u7f29\u5927\u5c0f\uff1a<\/p>\n
sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u516b\u3001\u4f7f\u7528tcpdump\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf<\/p>\n
tcpdump\u662f\u4e00\u79cd\u6293\u53d6\u7f51\u7edc\u6570\u636e\u5305\u7684\u547d\u4ee4\u884c\u5b9e\u7528\u5de5\u5177\u3002\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\uff0c\u4ee5\u67e5\u627e\u7f51\u7edc\u6545\u969c\u6216\u74f6\u9888\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528tcpdump\u547d\u4ee4\u6355\u83b7\u5165\u7ad9\u548c\u51fa\u7ad9TCP\u6d41\u91cf\u7684\u547d\u4ee4\uff1a<\/p>\n
tcpdump -i eth0 -vv tcp\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u53ef\u4ee5\u5c06\u5176\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\u4f7f\u7528wireshark\u67e5\u770b\uff1a<\/p>\n
tcpdump -i eth0 -vv tcp -w <filename>\nwireshark <filename><\/filename><\/filename><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u7ed3\u8bba<\/p>\n
\u901a\u8fc7\u9002\u5f53\u5730\u914d\u7f6eTCP\/IP\u548c\u7f51\u7edc\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8Linux\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\u3002\u901a\u8fc7\u672c\u6587\u63d0\u4f9b\u7684CLI\u548c\u5185\u6838\u5de5\u5177\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\u5e76\u8fdb\u884c\u4f18\u5316\u3002\u672c\u6587\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u7ba1\u7406\u5458\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u4f18\u5316TCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684TCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u73b0\u4ee3\u8ba1\u7b97\u673a\u9886\u57df\uff0cTCP\/IP\u534f\u8bae\u662f\u5b9e\u73b0\u7f51\u7edc\u901a\u4fe1\u7684\u57fa\u7840\u3002Linux\u4f5c\u4e3a\u5f00\u653e\u6e90\u4ee3\u7801\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5df2\u6210\u4e3a\u8bb8\u591a\u4f01\u4e1a\u548c\u7ec4\u7ec7\u4f7f\u7528\u7684\u9996\u9009\u64cd\u4f5c\u7cfb\u7edf\u3002\u7136\u800c\uff0c\u968f\u7740\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u548c\u670d\u52a1\u8d8a\u6765\u8d8a\u6210\u4e3a\u4e1a\u52a1\u7684\u5173\u952e\u7ec4\u6210\u90e8\u5206\uff0c\u7ba1\u7406\u5458\u5f80\u5f80\u9700\u8981\u4f18\u5316\u7f51\u7edc\u6027\u80fd\uff0c\u4ee5\u786e\u4fdd\u5feb\u901f\u548c\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u3002 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7\u5bf9Linux\u7cfb\u7edf\u8fdb\u884cTCP\/IP\u6027\u80fd\u548c\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u6765\u63d0\u9ad8Linux\u7cfb\u7edf\u7684\u7f51\u7edc\u4f20\u8f93\u901f\u5ea6\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u4e00\u4e9b\u5fc5\u8981\u7684TCP\u53c2\u6570\uff0c\u4ee5\u53ca\u5982\u4f55\u66f4\u6539\u8fd9\u4e9b\u53c2\u6570\u4ee5\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u3002\u672c\u6587\u8fd8\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u4e00\u4e9b\u5e38\u7528\u7684CLI\u548c\u5185\u6838\u5de5\u5177\u6765\u68c0\u67e5\u7cfb\u7edf\u4e2d\u7684\u7f51\u7edc\u6027\u80fd\uff0c\u5e76\u4e3a\u8bfb\u8005\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u4e86\u89e3tcp tw_reuse TCP\u8fde\u63a5\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u4f20\u8f93\u534f\u8bae\uff0c\u56e0\u6b64IP\u5730\u5740\u548c\u7aef\u53e3\u7ec4\u5408\u5fc5\u987b\u4e0d\u540c\u624d\u80fd\u521b\u5efa\u65b0\u8fde\u63a5\u3002\u5728\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u5df2\u7ecf\u5173\u95ed\uff0c\u4f46Linux\u4ecd\u5728\u7b49\u5f85\u53ef\u80fd\u6700\u8fd1\u521b\u5efa\u8fde\u63a5\u7684\u4e00\u6bb5\u65f6\u95f4\u4e4b\u540e\uff0c\u4f1a\u5c1d\u8bd5\u5efa\u7acbtcp\u8fde\u63a5\u3002\u8fd9\u4e00\u65f6\u95f4\u6bb5\u88ab\u79f0\u4e3a\u201cTIME_WAIT\u201d\u72b6\u6001\uff0c\u6b64\u72b6\u6001\u4e0b\u7684\u8fde\u63a5\u4e0d\u80fd\u88ab\u590d\u7528\u3002\u8fd9\u79cd\u884c\u4e3a\u4f1a\u51cf\u7f13\u670d\u52a1\u5668\u7684TCP\/IP\u6027\u80fd\u3002 \u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528tw_reuse\u53c2\u6570\u3002\u542f\u7528tw_reuse\u53ef\u4ee5\u5141\u8bb8\u5df2\u7ecf\u9000\u51fa\u7684\u8fde\u63a5\u88ab\u91cd\u7528\uff0c\u800c\u65e0\u9700\u7b49\u5f85\u4e00\u5b9a\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u542f\u7528\u8be5\u53c2\u6570\uff1a echo 1 &gt;\/proc\/sys\/net\/ipv4\/tcp_tw_reuse \u767b\u5f55\u540e\u590d\u5236 \u4e8c\u3001\u9002\u5f53\u8c03\u6574TCP keepalive\u53c2\u6570 TCP keepalive\u662f\u4e00\u79cd\u673a\u5236\uff0c\u80fd\u591f\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u4ecd\u7136\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u4ee5\u53ca\u9632\u6b62\u7531\u4e8e\u7f51\u7edc\u62e5\u585e\u95ee\u9898\u9020\u6210\u8fde\u63a5\u4e22\u5931\u3002TCP keepalive\u5b9a\u671f\u68c0\u67e5\u8fde\u63a5\u72b6\u6001\uff0c\u4ee5\u786e\u5b9a\u8fde\u63a5\u662f\u5426\u4ecd\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u5219\u5173\u95ed\u8fde\u63a5\u3002 \u8c03\u6574TCP keepalive\u53c2\u6570\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e09\u4e2a\u91cd\u8981\u7684TCP\u53c2\u6570\uff1a 1.tcp_keepalive_time tcp_keepalive_time\u53c2\u6570\u5b9a\u4e49\u5728\u53d1\u9001\u4fdd\u6301\u6d3b\u52a8\u200b\u200b\u62a5\u6587\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u3002\u5982\u679c\u7f51\u7edc\u4e2d\u7684\u4e00\u4e2a\u8282\u70b9\u65e0\u6cd5\u54cd\u5e94\uff0c\u5219keepalive\u673a\u5236\u4f1a\u5c1d\u8bd5\u91cd\u65b0\u5efa\u7acb\u8fde\u63a5\u3002 \u9ed8\u8ba4\u503c\u4e3a7200\u79d2\uff08\u53732\u5c0f\u65f6\uff09 2.tcp_keepalive_intvl tcp_keepalive_intvl\u53c2\u6570\u5b9a\u4e49\u4e86\u53d1\u9001\u4fdd\u6301\u6d3b\u52a8\u62a5\u6587\u4e4b\u540e\u7684\u91cd\u8bd5\u65f6\u95f4\u95f4\u9694\u3002 \u9ed8\u8ba4\u503c\u4e3a75\u79d2 3.tcp_keepalive_probes tcp_keepalive_probes\u5b9a\u4e49\u4e86\u5728\u53d1\u9001keepalive\u62a5\u6587\u4e4b\u524d\u8fdb\u884c\u51e0\u6b21TCP\u63a2\u6d4b\u3002 \u9ed8\u8ba4\u503c\u4e3a9\u6b21 \u53ef\u4ee5\u66f4\u6539\u8fd9\u4e9b\u53c2\u6570\u4ee5\u63d0\u9ad8TCP\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u66f4\u6539\u4ee5\u4e0a\u4e09\u4e2a\u53c2\u6570\u7684\u547d\u4ee4\uff1a echo 600 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_time echo 30 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_intvl echo 5 &gt;\/proc\/sys\/net\/ipv4\/tcp_keepalive_probes \u767b\u5f55\u540e\u590d\u5236 \u4e09\u3001\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879 TCP\u7a97\u53e3\u6269\u5c55\uff08TCP Window Scaling\uff09\u662f\u4e00\u79cd\u6269\u5c55TCP\u5934\u90e8\u7684\u9009\u9879\uff0c\u4ee5\u652f\u6301\u9ad8\u901f\u7f51\u7edc\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cLinux\u5185\u6838\u4f1a\u81ea\u52a8\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879\uff0c\u4f46\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u8f83\u65e7\u7248\u672c\u7684\u5185\u6838\uff0c\u5219\u53ef\u80fd\u9700\u8981\u542f\u7528\u8be5\u9009\u9879\u3002 \u4ee5\u4e0b\u662f\u542f\u7528TCP\u7a97\u53e3\u6269\u5c55\u9009\u9879\u7684\u547d\u4ee4\uff1a echo 1 &gt;\/proc\/sys\/net\/ipv4\/tcp_window_scaling \u767b\u5f55\u540e\u590d\u5236 \u56db\u3001\u4f7f\u7528ifconfig\u8c03\u6574MTU\u548cMRU\u503c MTU\uff08\u6700\u5927\u4f20\u8f93\u5355\u5143\uff09\u662f\u6570\u636e\u5305\u53ef\u4ee5\u4f20\u8f93\u7684\u6700\u5927\u5927\u5c0f\uff0c\u800cMRU\uff08\u6700\u5927\u63a5\u6536\u5355\u5143\uff09\u662f\u63a5\u6536\u7aef\u6240\u80fd\u63a5\u6536\u7684\u6700\u5927\u6570\u636e\u5305\u5927\u5c0f\u3002 \u66f4\u6539MTU\u548cMRU\u503c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ifconfig\u547d\u4ee4\u6765\u66f4\u6539\u8fd9\u4e9b\u503c\u3002\u4ee5\u4e0b\u662f\u66f4\u6539MTU\u548cMRU\u7684\u547d\u4ee4\uff1a ifconfig eth0 mtu 9000 ifconfig eth0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-62768","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=62768"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62768\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}