{"id":474,"date":"2015-11-26T13:51:42","date_gmt":"2015-11-26T13:51:42","guid":{"rendered":"25ddc0f8c9d3e22e03d3076f98d83cb2"},"modified":"2015-11-26T13:51:42","modified_gmt":"2015-11-26T13:51:42","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/474","title":{"rendered":"Netty \u79fb\u52a8\u5f00\u53d1\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"<p><b>1. \u6700\u5927\u53e5\u67c4\u6570\u4fee\u6539<\/b><\/p>\n<p>\u767e\u4e07\u957f\u8fde\u63a5\u63a5\u5165\uff0c\u9996\u5148\u9700\u8981\u4f18\u5316\u7684\u5c31\u662fLinux\u5185\u6838\u53c2\u6570\uff0c\u5176\u4e2dLinux\u6700\u5927\u6587\u4ef6\u53e5\u67c4\u6570\u662f\u6700\u91cd\u8981\u7684\u8c03\u4f18\u53c2\u6570\u4e4b\u4e00\uff0c\u9ed8\u8ba4\u5355\u8fdb\u7a0b\u6253\u5f00\u7684\u6700\u5927\u53e5\u67c4\u6570\u662f1024\uff0c\u901a\u8fc7ulimit -a\u53ef\u4ee5\u67e5\u770b\u76f8\u5173\u53c2\u6570\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<p>[root@lilinfeng ~]# ulimit -a<br \/>\ncore file size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (blocks, -c) 0<br \/>\ndata seg size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (kbytes, -d) unlimited<br \/>\nscheduling priority&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (-e) 0<br \/>\nfile size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (blocks, -f) unlimited<br \/>\npending signals&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (-i) 256324<br \/>\nmax locked memory&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (kbytes, -l) 64<br \/>\nmax memory size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (kbytes, -m) unlimited<br \/>\nopen files&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (-n) 1024<\/p>\n<p>......\u540e\u7eed\u8f93\u51fa\u7701\u7565<\/p>\n<p>\u5f53\u5355\u4e2a\u63a8\u9001\u670d\u52a1\u63a5\u6536\u5230\u7684\u94fe\u63a5\u8d85\u8fc7\u4e0a\u9650\u540e\uff0c\u5c31\u4f1a\u62a5\u201ctoo many open files\u201d\uff0c\u6240\u6709\u65b0\u7684\u5ba2\u6237\u7aef\u63a5\u5165\u5c06\u5931\u8d25\u3002<\/p>\n<p>\u901a\u8fc7vi \/etc\/security\/limits.conf \u6dfb\u52a0\u5982\u4e0b\u914d\u7f6e\u53c2\u6570\uff1a\u4fee\u6539\u4e4b\u540e\u4fdd\u5b58\uff0c\u6ce8\u9500\u5f53\u524d\u7528\u6237\uff0c\u91cd\u65b0\u767b\u5f55\uff0c\u901a\u8fc7ulimit -a \u67e5\u770b\u4fee\u6539\u7684\u72b6\u6001\u662f\u5426\u751f\u6548\u3002<\/p>\n<p>*&nbsp; soft\u3000\u3000nofile\u3000\u30001000000<br \/>\n*&nbsp; hard\u3000\u3000nofile\u3000\u30001000000<\/p>\n<p>\u9700\u8981\u6307\u51fa\u7684\u662f\uff0c\u5c3d\u7ba1\u6211\u4eec\u53ef\u4ee5\u5c06\u5355\u4e2a\u8fdb\u7a0b\u6253\u5f00\u7684\u6700\u5927\u53e5\u67c4\u6570\u4fee\u6539\u7684\u975e\u5e38\u5927\uff0c\u4f46\u662f\u5f53\u53e5\u67c4\u6570\u8fbe\u5230\u4e00\u5b9a\u6570\u91cf\u7ea7\u4e4b\u540e\uff0c\u5904\u7406\u6548\u7387\u5c06\u51fa\u73b0\u660e\u663e\u4e0b\u964d\uff0c\u56e0\u6b64\uff0c\u9700\u8981\u6839\u636e\u670d\u52a1\u5668\u7684\u786c\u4ef6\u914d\u7f6e\u548c\u5904\u7406\u80fd\u529b\u8fdb\u884c\u5408\u7406\u8bbe\u7f6e\u3002\u5982\u679c\u5355\u4e2a\u670d\u52a1\u5668\u6027\u80fd\u4e0d\u884c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u96c6\u7fa4\u7684\u65b9\u5f0f\u5b9e\u73b0\u3002<\/p>\n<p><b><br \/>\n<\/b><\/p>\n<p><b>2. \u5f53\u5fc3CLOSE_WAIT<\/b><\/p>\n<p>\u4ece\u4e8b\u79fb\u52a8\u63a8\u9001\u670d\u52a1\u5f00\u53d1\u7684\u540c\u5b66\u53ef\u80fd\u90fd\u6709\u4f53\u4f1a\uff0c\u79fb\u52a8\u65e0\u7ebf\u7f51\u7edc\u53ef\u9760\u6027\u975e\u5e38\u5dee\uff0c\u7ecf\u5e38\u5b58\u5728\u5ba2\u6237\u7aef\u91cd\u7f6e\u8fde\u63a5\uff0c\u7f51\u7edc\u95ea\u65ad\u7b49\u3002<\/p>\n<p>\u5728\u767e\u4e07\u957f\u8fde\u63a5\u7684\u63a8\u9001\u7cfb\u7edf\u4e2d\uff0c\u670d\u52a1\u7aef\u9700\u8981\u80fd\u591f\u6b63\u786e\u5904\u7406\u8fd9\u4e9b\u7f51\u7edc\u5f02\u5e38\uff0c\u8bbe\u8ba1\u8981\u70b9\u5982\u4e0b\uff1a<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u5ba2\u6237\u7aef\u7684\u91cd\u8fde\u95f4\u9694\u9700\u8981\u5408\u7406\u8bbe\u7f6e\uff0c\u9632\u6b62\u8fde\u63a5\u8fc7\u4e8e\u9891\u7e41\u5bfc\u81f4\u7684\u8fde\u63a5\u5931\u8d25\uff08\u4f8b\u5982\u7aef\u53e3\u8fd8\u6ca1\u6709\u88ab\u91ca\u653e\uff09\uff1b<br \/>\n&nbsp;&nbsp;&nbsp; \u5ba2\u6237\u7aef\u91cd\u590d\u767b\u9646\u62d2\u7edd\u673a\u5236\uff1b<br \/>\n&nbsp;&nbsp;&nbsp; \u670d\u52a1\u7aef\u6b63\u786e\u5904\u7406I\/O\u5f02\u5e38\u548c\u89e3\u7801\u5f02\u5e38\u7b49\uff0c\u9632\u6b62\u53e5\u67c4\u6cc4\u9732\u3002<\/p>\n<p>\u6700\u540e\u7279\u522b\u9700\u8981\u6ce8\u610f\u7684\u4e00\u70b9\u5c31\u662fclose_wait \u8fc7\u591a\u95ee\u9898\uff0c\u7531\u4e8e\u7f51\u7edc\u4e0d\u7a33\u5b9a\u7ecf\u5e38\u4f1a\u5bfc\u81f4\u5ba2\u6237\u7aef\u65ad\u8fde\uff0c\u5982\u679c\u670d\u52a1\u7aef\u6ca1\u6709\u80fd\u591f\u53ca\u65f6\u5173\u95edsocket\uff0c\u5c31\u4f1a\u5bfc\u81f4\u5904\u4e8eclose_wait\u72b6\u6001\u7684\u94fe\u8def\u8fc7\u591a\u3002close_wait\u72b6\u6001\u7684\u94fe\u8def\u5e76\u4e0d\u91ca\u653e\u53e5\u67c4\u548c\u5185\u5b58\u7b49\u8d44\u6e90\uff0c\u5982\u679c\u79ef\u538b\u8fc7\u591a\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u53e5\u67c4\u8017\u5c3d\uff0c\u53d1\u751f\u201cToo many open files\u201d\u5f02\u5e38\uff0c\u65b0\u7684\u5ba2\u6237\u7aef\u65e0\u6cd5\u63a5\u5165\uff0c\u6d89\u53ca\u521b\u5efa\u6216\u8005\u6253\u5f00\u53e5\u67c4\u7684\u64cd\u4f5c\u90fd\u5c06\u5931\u8d25\u3002<\/p>\n<p>\u4e0b\u9762\u5bf9close_wait\u72b6\u6001\u8fdb\u884c\u4e0b\u7b80\u5355\u4ecb\u7ecd\uff0c\u88ab\u52a8\u5173\u95edTCP\u8fde\u63a5\u72b6\u6001\u8fc1\u79fb\u56fe\u5982\u4e0b\u6240\u793a\uff1a<br \/>\n<a target=\"_blank\" href=\"\/notes\/content\/uploadfile\/201511\/4a471448517410.png\" id=\"ematt:371\"><img decoding=\"async\" src=\"\/notes\/content\/uploadfile\/201511\/4a471448517410.png\" alt=\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\" border=\"0\" \/><\/a><br \/>\n\u56fe3-1 \u88ab\u52a8\u5173\u95edTCP\u8fde\u63a5\u72b6\u6001\u8fc1\u79fb\u56fe<\/p>\n<p>close_wait\u662f\u88ab\u52a8\u5173\u95ed\u8fde\u63a5\u662f\u5f62\u6210\u7684\uff0c\u6839\u636eTCP\u72b6\u6001\u673a\uff0c\u670d\u52a1\u5668\u7aef\u6536\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u7684FIN\uff0cTCP\u534f\u8bae\u6808\u4f1a\u81ea\u52a8\u53d1\u9001ACK\uff0c\u94fe\u63a5\u8fdb\u5165close_wait\u72b6\u6001\u3002\u4f46\u5982\u679c\u670d\u52a1\u5668\u7aef\u4e0d\u6267\u884csocket\u7684close()\u64cd\u4f5c\uff0c\u72b6\u6001\u5c31\u4e0d\u80fd\u7531close_wait\u8fc1\u79fb\u5230last_ack\uff0c\u5219\u7cfb\u7edf\u4e2d\u4f1a\u5b58\u5728\u5f88\u591aclose_wait\u72b6\u6001\u7684\u8fde\u63a5\u3002\u901a\u5e38\u6765\u8bf4\uff0c\u4e00\u4e2aclose_wait\u4f1a\u7ef4\u6301\u81f3\u5c112\u4e2a\u5c0f\u65f6\u7684\u65f6\u95f4\uff08\u7cfb\u7edf\u9ed8\u8ba4\u8d85\u65f6\u65f6\u95f4\u7684\u662f7200\u79d2\uff0c\u4e5f\u5c31\u662f2\u5c0f\u65f6\uff09\u3002\u5982\u679c\u670d\u52a1\u7aef\u7a0b\u5e8f\u56e0\u67d0\u4e2a\u539f\u56e0\u5bfc\u81f4\u7cfb\u7edf\u9020\u6210\u4e00\u5806close_wait\u6d88\u8017\u8d44\u6e90\uff0c\u90a3\u4e48\u901a\u5e38\u662f\u7b49\u4e0d\u5230\u91ca\u653e\u90a3\u4e00\u523b\uff0c\u7cfb\u7edf\u5c31\u5df2\u5d29\u6e83\u3002<\/p>\n<p>\u5bfc\u81f4close_wait\u8fc7\u591a\u7684\u53ef\u80fd\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u7a0b\u5e8f\u5904\u7406Bug\uff0c\u5bfc\u81f4\u63a5\u6536\u5230\u5bf9\u65b9\u7684fin\u4e4b\u540e\u6ca1\u6709\u53ca\u65f6\u5173\u95edsocket\uff0c\u8fd9\u53ef\u80fd\u662fNetty\u7684Bug\uff0c\u4e5f\u53ef\u80fd\u662f\u4e1a\u52a1\u5c42Bug\uff0c\u9700\u8981\u5177\u4f53\u95ee\u9898\u5177\u4f53\u5206\u6790\uff1b<br \/>\n&nbsp;&nbsp;&nbsp; \u5173\u95edsocket\u4e0d\u53ca\u65f6\uff1a\u4f8b\u5982I\/O\u7ebf\u7a0b\u88ab\u610f\u5916\u963b\u585e\uff0c\u6216\u8005I\/O\u7ebf\u7a0b\u6267\u884c\u7684\u7528\u6237\u81ea\u5b9a\u4e49Task\u6bd4\u4f8b\u8fc7\u9ad8\uff0c\u5bfc\u81f4I\/O\u64cd\u4f5c\u5904\u7406\u4e0d\u53ca\u65f6\uff0c\u94fe\u8def\u4e0d\u80fd\u88ab\u53ca\u65f6\u91ca\u653e\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u7ed3\u5408Netty\u7684\u539f\u7406\uff0c\u5bf9\u6f5c\u5728\u7684\u6545\u969c\u70b9\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p>\u8bbe\u8ba1\u8981\u70b91\uff1a\u4e0d\u8981\u5728Netty\u7684I\/O\u7ebf\u7a0b\u4e0a\u5904\u7406\u4e1a\u52a1\uff08\u5fc3\u8df3\u53d1\u9001\u548c\u68c0\u6d4b\u9664\u5916\uff09\u3002Why? \u5bf9\u4e8eJava\u8fdb\u7a0b\uff0c\u7ebf\u7a0b\u4e0d\u80fd\u65e0\u9650\u589e\u957f\uff0c\u8fd9\u5c31\u610f\u5473\u7740Netty\u7684Reactor\u7ebf\u7a0b\u6570\u5fc5\u987b\u6536\u655b\u3002Netty\u7684\u9ed8\u8ba4\u503c\u662fCPU\u6838\u6570 * 2\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cI\/O\u5bc6\u96c6\u578b\u5e94\u7528\u5efa\u8bae\u7ebf\u7a0b\u6570\u5c3d\u91cf\u8bbe\u7f6e\u5927\u4e9b\uff0c\u4f46\u8fd9\u4e3b\u8981\u662f\u9488\u5bf9\u4f20\u7edf\u540c\u6b65I\/O\u800c\u8a00\uff0c\u5bf9\u4e8e\u975e\u963b\u585eI\/O\uff0c\u7ebf\u7a0b\u6570\u5e76\u4e0d\u5efa\u8bae\u8bbe\u7f6e\u592a\u5927\uff0c\u5c3d\u7ba1\u6ca1\u6709\u6700\u4f18\u503c\uff0c\u4f46\u662fI\/O\u7ebf\u7a0b\u6570\u7ecf\u9a8c\u503c\u662f[CPU\u6838\u6570 + 1\uff0cCPU\u6838\u6570*2 ]\u4e4b\u95f4\u3002<\/p>\n<p>\u5047\u5982\u5355\u4e2a\u670d\u52a1\u5668\u652f\u6491100\u4e07\u4e2a\u957f\u8fde\u63a5\uff0c\u670d\u52a1\u5668\u5185\u6838\u6570\u4e3a32\uff0c\u5219\u5355\u4e2aI\/O\u7ebf\u7a0b\u5904\u7406\u7684\u94fe\u63a5\u6570L = 100\/(32 * 2) = 15625\u3002 \u5047\u5982\u6bcf5S\u6709\u4e00\u6b21\u6d88\u606f\u4ea4\u4e92\uff08\u65b0\u6d88\u606f\u63a8\u9001\u3001\u5fc3\u8df3\u6d88\u606f\u548c\u5176\u5b83\u7ba1\u7406\u6d88\u606f\uff09\uff0c\u5219\u5e73\u5747CAPS = 15625 \/ 5 = 3125\u6761\/\u79d2\u3002\u8fd9\u4e2a\u6570\u503c\u76f8\u6bd4\u4e8eNetty\u7684\u5904\u7406\u6027\u80fd\u800c\u8a00\u538b\u529b\u5e76\u4e0d\u5927\uff0c\u4f46\u662f\u5728\u5b9e\u9645\u4e1a\u52a1\u5904\u7406\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u6709\u4e00\u4e9b\u989d\u5916\u7684\u590d\u6742\u903b\u8f91\u5904\u7406\uff0c\u4f8b\u5982\u6027\u80fd\u7edf\u8ba1\u3001\u8bb0\u5f55\u63a5\u53e3\u65e5\u5fd7\u7b49\uff0c\u8fd9\u4e9b\u4e1a\u52a1\u64cd\u4f5c\u6027\u80fd\u5f00\u9500\u4e5f\u6bd4\u8f83\u5927\uff0c\u5982\u679c\u5728I\/O\u7ebf\u7a0b\u4e0a\u76f4\u63a5\u505a\u4e1a\u52a1\u903b\u8f91\u5904\u7406\uff0c\u53ef\u80fd\u4f1a\u963b\u585eI\/O\u7ebf\u7a0b\uff0c\u5f71\u54cd\u5bf9\u5176\u5b83\u94fe\u8def\u7684\u8bfb\u5199\u64cd\u4f5c\uff0c\u8fd9\u5c31\u4f1a\u5bfc\u81f4\u88ab\u52a8\u5173\u95ed\u7684\u94fe\u8def\u4e0d\u80fd\u53ca\u65f6\u5173\u95ed\uff0c\u9020\u6210close_wait\u5806\u79ef\u3002<\/p>\n<p>\u8bbe\u8ba1\u8981\u70b92\uff1a\u5728I\/O\u7ebf\u7a0b\u4e0a\u6267\u884c\u81ea\u5b9a\u4e49Task\u8981\u5f53\u5fc3\u3002Netty\u7684I\/O\u5904\u7406\u7ebf\u7a0bNioEventLoop\u652f\u6301\u4e24\u79cd\u81ea\u5b9a\u4e49Task\u7684\u6267\u884c\uff1a<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u666e\u901a\u7684Runnable: \u901a\u8fc7\u8c03\u7528NioEventLoop\u7684execute(Runnable task)\u65b9\u6cd5\u6267\u884c\uff1b<br \/>\n&nbsp;&nbsp;&nbsp; \u5b9a\u65f6\u4efb\u52a1ScheduledFutureTask:\u901a\u8fc7\u8c03\u7528NioEventLoop\u7684schedule(Runnable command, long delay, TimeUnit unit)\u7cfb\u5217\u63a5\u53e3\u6267\u884c\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48NioEventLoop\u8981\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49Runnable\u548cScheduledFutureTask\u7684\u6267\u884c\uff0c\u5e76\u4e0d\u662f\u672c\u6587\u8981\u8ba8\u8bba\u7684\u91cd\u70b9\uff0c\u540e\u7eed\u4f1a\u6709\u4e13\u9898\u6587\u7ae0\u8fdb\u884c\u4ecb\u7ecd\u3002\u672c\u6587\u91cd\u70b9\u5bf9\u5b83\u4eec\u7684\u5f71\u54cd\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p>\u5728NioEventLoop\u4e2d\u6267\u884cRunnable\u548cScheduledFutureTask\uff0c\u610f\u5473\u7740\u5141\u8bb8\u7528\u6237\u5728NioEventLoop\u4e2d\u6267\u884c\u975eI\/O\u64cd\u4f5c\u7c7b\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u8fd9\u4e9b\u4e1a\u52a1\u903b\u8f91\u901a\u5e38\u7528\u6d88\u606f\u62a5\u6587\u7684\u5904\u7406\u548c\u534f\u8bae\u7ba1\u7406\u76f8\u5173\u3002\u5b83\u4eec\u7684\u6267\u884c\u4f1a\u62a2\u5360NioEventLoop I\/O\u8bfb\u5199\u7684CPU\u65f6\u95f4\uff0c\u5982\u679c\u7528\u6237\u81ea\u5b9a\u4e49Task\u8fc7\u591a\uff0c\u6216\u8005\u5355\u4e2aTask\u6267\u884c\u5468\u671f\u8fc7\u957f\uff0c\u4f1a\u5bfc\u81f4I\/O\u8bfb\u5199\u64cd\u4f5c\u88ab\u963b\u585e\uff0c\u8fd9\u6837\u4e5f\u95f4\u63a5\u5bfc\u81f4close_wait\u5806\u79ef\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u5982\u679c\u7528\u6237\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u5230\u4e86Runnable\u548cScheduledFutureTask\uff0c\u8bf7\u5408\u7406\u8bbe\u7f6eioRatio\u7684\u6bd4\u4f8b\uff0c\u901a\u8fc7NioEventLoop\u7684setIoRatio(int ioRatio)\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e\u8be5\u503c\uff0c\u9ed8\u8ba4\u503c\u4e3a50\uff0c\u5373I\/O\u64cd\u4f5c\u548c\u7528\u6237\u81ea\u5b9a\u4e49\u4efb\u52a1\u7684\u6267\u884c\u65f6\u95f4\u6bd4\u4e3a1\uff1a1\u3002<\/p>\n<p>\u6211\u7684\u5efa\u8bae\u662f\u5f53\u670d\u52a1\u7aef\u5904\u7406\u6d77\u91cf\u5ba2\u6237\u7aef\u957f\u8fde\u63a5\u7684\u65f6\u5019\uff0c\u4e0d\u8981\u5728NioEventLoop\u4e2d\u6267\u884c\u81ea\u5b9a\u4e49Task\uff0c\u6216\u8005\u975e\u5fc3\u8df3\u7c7b\u7684\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<p>\u8bbe\u8ba1\u8981\u70b93\uff1aIdleStateHandler\u4f7f\u7528\u8981\u5f53\u5fc3\u3002\u5f88\u591a\u7528\u6237\u4f1a\u4f7f\u7528IdleStateHandler\u505a\u5fc3\u8df3\u53d1\u9001\u548c\u68c0\u6d4b\uff0c\u8fd9\u79cd\u7528\u6cd5\u503c\u5f97\u63d0\u5021\u3002\u76f8\u6bd4\u4e8e\u81ea\u5df1\u542f\u5b9a\u65f6\u4efb\u52a1\u53d1\u9001\u5fc3\u8df3\uff0c\u8fd9\u79cd\u65b9\u5f0f\u66f4\u9ad8\u6548\u3002\u4f46\u662f\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u5fc3\u8df3\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u4e2d\uff0c\u65e0\u8bba\u662f\u6b63\u5e38\u8fd8\u662f\u5f02\u5e38\u573a\u666f\uff0c\u5904\u7406\u65f6\u5ef6\u8981\u53ef\u63a7\uff0c\u9632\u6b62\u65f6\u5ef6\u4e0d\u53ef\u63a7\u5bfc\u81f4\u7684NioEventLoop\u88ab\u610f\u5916\u963b\u585e\u3002\u4f8b\u5982\uff0c\u5fc3\u8df3\u8d85\u65f6\u6216\u8005\u53d1\u751fI\/O\u5f02\u5e38\u65f6\uff0c\u4e1a\u52a1\u8c03\u7528Email\u53d1\u9001\u63a5\u53e3\u544a\u8b66\uff0c\u7531\u4e8eEmail\u670d\u52a1\u7aef\u5904\u7406\u8d85\u65f6\uff0c\u5bfc\u81f4\u90ae\u4ef6\u53d1\u9001\u5ba2\u6237\u7aef\u88ab\u963b\u585e\uff0c\u7ea7\u8054\u5f15\u8d77IdleStateHandler\u7684AllIdleTimeoutTask\u4efb\u52a1\u88ab\u963b\u585e\uff0c\u6700\u7ec8NioEventLoop\u591a\u8def\u590d\u7528\u5668\u4e0a\u5176\u5b83\u7684\u94fe\u8def\u8bfb\u5199\u88ab\u963b\u585e\u3002<\/p>\n<p>\u5bf9\u4e8eReadTimeoutHandler\u548cWriteTimeoutHandler\uff0c\u7ea6\u675f\u540c\u6837\u5b58\u5728<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>1. \u6700\u5927\u53e5\u67c4\u6570\u4fee\u6539<\/b><\/p>\n<p>\u767e\u4e07\u957f\u8fde\u63a5\u63a5\u5165\uff0c\u9996\u5148\u9700\u8981\u4f18\u5316\u7684\u5c31\u662fLinux\u5185\u6838\u53c2\u6570\uff0c\u5176\u4e2dLinux\u6700\u5927\u6587\u4ef6\u53e5\u67c4\u6570\u662f\u6700\u91cd\u8981\u7684\u8c03\u4f18\u53c2\u6570\u4e4b\u4e00\uff0c\u9ed8\u8ba4\u5355\u8fdb\u7a0b\u6253\u5f00\u7684\u6700\u5927\u53e5\u67c4\u6570\u662f1024\uff0c\u901a\u8fc7ulimit -a\u53ef\u4ee5\u67e5\u770b\u76f8\u5173\u53c2\u6570\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<p>[root@lilinfeng ~]# ulimit -a<br \/>\ncore file size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (blocks, -c) 0<br \/>\ndata seg size&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;... <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/474\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[291],"tags":[222],"class_list":["post-474","post","type-post","status-publish","format-standard","hentry","category-network","tag-netty"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=474"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/474\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}