\u4e00\u3001\u4e00\u822c\u6765\u8bf4nginx \u914d\u7f6e\u6587\u4ef6\u4e2d\u5bf9\u4f18\u5316\u6bd4\u8f83\u6709\u4f5c\u7528\u7684\u4e3a\u4ee5\u4e0b\u51e0\u9879\uff1a<\/p>\n
1. worker_processes 8;
\nnginx \u8fdb\u7a0b\u6570\uff0c\u5efa\u8bae\u6309\u7167cpu \u6570\u76ee\u6765\u6307\u5b9a\uff0c\u4e00\u822c\u4e3a\u5b83\u7684\u500d\u6570 (\u5982,2\u4e2a\u56db\u6838\u7684cpu\u8ba1\u4e3a8)\u3002<\/p>\n
2. worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;
\n\u4e3a\u6bcf\u4e2a\u8fdb\u7a0b\u5206\u914dcpu\uff0c\u4e0a\u4f8b\u4e2d\u5c068 \u4e2a\u8fdb\u7a0b\u5206\u914d\u52308 \u4e2acpu\uff0c\u5f53\u7136\u53ef\u4ee5\u5199\u591a\u4e2a\uff0c\u6216\u8005\u5c06\u4e00
\n\u4e2a\u8fdb\u7a0b\u5206\u914d\u5230\u591a\u4e2acpu\u3002<\/p>\n
3. worker_rlimit_nofile 65535;
\n\u8fd9\u4e2a\u6307\u4ee4\u662f\u6307\u5f53\u4e00\u4e2anginx \u8fdb\u7a0b\u6253\u5f00\u7684\u6700\u591a\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u76ee\uff0c\u7406\u8bba\u503c\u5e94\u8be5\u662f\u6700\u591a\u6253\u5f00\u6587
\n\u4ef6\u6570\uff08ulimit -n\uff09\u4e0enginx \u8fdb\u7a0b\u6570\u76f8\u9664\uff0c\u4f46\u662fnginx \u5206\u914d\u8bf7\u6c42\u5e76\u4e0d\u662f\u90a3\u4e48\u5747\u5300\uff0c\u6240\u4ee5\u6700\u597d\u4e0eulimit -n \u7684\u503c\u4fdd\u6301\u4e00\u81f4\u3002
\n\u73b0\u5728\u5728linux 2.6\u5185\u6838\u4e0b\u5f00\u542f\u6587\u4ef6\u6253\u5f00\u6570\u4e3a65535\uff0cworker_rlimit_nofile\u5c31\u76f8\u5e94\u5e94\u8be5\u586b\u519965535\u3002
\n\u8fd9\u662f\u56e0\u4e3anginx\u8c03\u5ea6\u65f6\u5206\u914d\u8bf7\u6c42\u5230\u8fdb\u7a0b\u5e76\u4e0d\u662f\u90a3\u4e48\u7684\u5747\u8861\uff0c\u6240\u4ee5\u5047\u5982\u586b\u519910240\uff0c\u603b\u5e76\u53d1\u91cf\u8fbe\u52303-4\u4e07\u65f6\u5c31\u6709\u8fdb\u7a0b\u53ef\u80fd\u8d85\u8fc710240\u4e86\uff0c\u8fd9\u65f6\u4f1a\u8fd4\u56de502\u9519\u8bef\u3002
\n\u67e5\u770blinux\u7cfb\u7edf\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u65b9\u6cd5\uff1a<\/p>\n
[root@web001 ~]# sysctl -a | grep fs.file\r\n\r\nfs.file-max = 789972\r\n\r\nfs.file-nr = 510 0 789972<\/pre>\n<\/p>\n
4. use epoll;
\n\u4f7f\u7528epoll \u7684I\/O \u6a21\u578b<\/p>\n\u8865\u5145\u8bf4\u660e:\r\n\r\n\u4e0eapache\u76f8\u7c7b\uff0cnginx\u9488\u5bf9\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u6709\u4e0d\u540c\u7684\u4e8b\u4ef6\u6a21\u578b\r\n\r\nA\uff09\u6807\u51c6\u4e8b\u4ef6\u6a21\u578b\r\nSelect\u3001poll\u5c5e\u4e8e\u6807\u51c6\u4e8b\u4ef6\u6a21\u578b\uff0c\u5982\u679c\u5f53\u524d\u7cfb\u7edf\u4e0d\u5b58\u5728\u66f4\u6709\u6548\u7684\u65b9\u6cd5\uff0cnginx\u4f1a\u9009\u62e9select\u6216poll\r\nB\uff09\u9ad8\u6548\u4e8b\u4ef6\u6a21\u578b\r\nKqueue\uff1a\u4f7f\u7528\u4e8e FreeBSD 4.1+, OpenBSD 2.9+, NetBSD 2.0 \u548c MacOS X. \u4f7f\u7528\u53cc\u5904\u7406\u5668\u7684MacOS X\u7cfb\u7edf\u4f7f\u7528kqueue\u53ef\u80fd\u4f1a\u9020\u6210\u5185\u6838\u5d29\u6e83\u3002\r\nEpoll: \u4f7f\u7528\u4e8eLinux\u5185\u68382.6\u7248\u672c\u53ca\u4ee5\u540e\u7684\u7cfb\u7edf\u3002\r\n\r\n\/dev\/poll\uff1a\u4f7f\u7528\u4e8e Solaris 7 11\/99+, HP\/UX 11.22+ (eventport), IRIX 6.5.15+ \u548c Tru64 UNIX 5.1A+\u3002\r\n\r\nEventport\uff1a\u4f7f\u7528\u4e8e Solaris 10. \u4e3a\u4e86\u9632\u6b62\u51fa\u73b0\u5185\u6838\u5d29\u6e83\u7684\u95ee\u9898\uff0c \u6709\u5fc5\u8981\u5b89\u88c5\u5b89\u5168\u8865\u4e01\u3002<\/pre>\n<\/p>\n
5. worker_connections 65535;
\n\u6bcf\u4e2a\u8fdb\u7a0b\u5141\u8bb8\u7684\u6700\u591a\u8fde\u63a5\u6570\uff0c \u7406\u8bba\u4e0a\u6bcf\u53f0nginx \u670d\u52a1\u5668\u7684\u6700\u5927\u8fde\u63a5\u6570\u4e3aworker_processes*worker_connections\u3002<\/p>\n6. keepalive_timeout 60;
\nkeepalive \u8d85\u65f6\u65f6\u95f4\u3002<\/p>\n7. client_header_buffer_size 4k;
\n\u5ba2\u6237\u7aef\u8bf7\u6c42\u5934\u90e8\u7684\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u6839\u636e\u4f60\u7684\u7cfb\u7edf\u5206\u9875\u5927\u5c0f\u6765\u8bbe\u7f6e\uff0c\u4e00\u822c\u4e00\u4e2a\u8bf7\u6c42\u5934\u7684\u5927\u5c0f\u4e0d\u4f1a\u8d85\u8fc71k\uff0c\u4e0d\u8fc7\u7531\u4e8e\u4e00\u822c\u7cfb\u7edf\u5206\u9875\u90fd\u8981\u5927\u4e8e1k\uff0c\u6240\u4ee5\u8fd9\u91cc\u8bbe\u7f6e\u4e3a\u5206\u9875\u5927\u5c0f\u3002
\n\u5206\u9875\u5927\u5c0f\u53ef\u4ee5\u7528\u547d\u4ee4getconf PAGESIZE \u53d6\u5f97\u3002<\/p>\n[root@web001 ~]# getconf PAGESIZE\r\n4096<\/pre>\n\u4f46\u4e5f\u6709client_header_buffer_size\u8d85\u8fc74k\u7684\u60c5\u51b5\uff0c\u4f46\u662fclient_header_buffer_size\u8be5\u503c\u5fc5\u987b\u8bbe\u7f6e\u4e3a\u201c\u7cfb\u7edf\u5206\u9875\u5927\u5c0f\u201d\u7684\u6574\u500d\u6570\u3002<\/p>\n
8. open_file_cache max=65535 inactive=60s;
\n\u8fd9\u4e2a\u5c06\u4e3a\u6253\u5f00\u6587\u4ef6\u6307\u5b9a\u7f13\u5b58\uff0c\u9ed8\u8ba4\u662f\u6ca1\u6709\u542f\u7528\u7684\uff0cmax \u6307\u5b9a\u7f13\u5b58\u6570\u91cf\uff0c\u5efa\u8bae\u548c\u6253\u5f00\u6587\u4ef6\u6570\u4e00\u81f4\uff0cinactive \u662f\u6307\u7ecf\u8fc7\u591a\u957f\u65f6\u95f4\u6587\u4ef6\u6ca1\u88ab\u8bf7\u6c42\u540e\u5220\u9664\u7f13\u5b58\u3002<\/p>\n9. open_file_cache_valid 80s;
\n\u8fd9\u4e2a\u662f\u6307\u591a\u957f\u65f6\u95f4\u68c0\u67e5\u4e00\u6b21\u7f13\u5b58\u7684\u6709\u6548\u4fe1\u606f\u3002<\/p>\n10. open_file_cache_min_uses 1;
\nopen_file_cache \u6307\u4ee4\u4e2d\u7684inactive \u53c2\u6570\u65f6\u95f4\u5185\u6587\u4ef6\u7684\u6700\u5c11\u4f7f\u7528\u6b21\u6570\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u6570\u5b57\uff0c\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e00\u76f4\u662f\u5728\u7f13\u5b58\u4e2d\u6253\u5f00\u7684\uff0c\u5982\u4e0a\u4f8b\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u6587\u4ef6\u5728inactive \u65f6\u95f4\u5185\u4e00\u6b21\u6ca1\u88ab\u4f7f\u7528\uff0c\u5b83\u5c06\u88ab\u79fb\u9664\u3002<\/p>\n\u4e8c\u3001\u5173\u4e8e\u5185\u6838\u53c2\u6570\u7684\u4f18\u5316\uff1a<\/p>\n
net.ipv4.tcp_max_tw_buckets = 6000\r\ntimewait \u7684\u6570\u91cf\uff0c\u9ed8\u8ba4\u662f180000\u3002\r\n\r\nnet.ipv4.ip_local_port_range = 1024 65000\r\n\u5141\u8bb8\u7cfb\u7edf\u6253\u5f00\u7684\u7aef\u53e3\u8303\u56f4\u3002\r\n\r\nnet.ipv4.tcp_tw_recycle = 1\r\n\u542f\u7528timewait \u5feb\u901f\u56de\u6536\u3002\r\n\r\nnet.ipv4.tcp_tw_reuse = 1\r\n\u5f00\u542f\u91cd\u7528\u3002\u5141\u8bb8\u5c06TIME-WAIT sockets \u91cd\u65b0\u7528\u4e8e\u65b0\u7684TCP \u8fde\u63a5\u3002\r\n\r\nnet.ipv4.tcp_syncookies = 1\r\n\u5f00\u542fSYN Cookies\uff0c\u5f53\u51fa\u73b0SYN \u7b49\u5f85\u961f\u5217\u6ea2\u51fa\u65f6\uff0c\u542f\u7528cookies \u6765\u5904\u7406\u3002\r\n\r\nnet.core.somaxconn = 262144\r\nweb \u5e94\u7528\u4e2dlisten \u51fd\u6570\u7684backlog \u9ed8\u8ba4\u4f1a\u7ed9\u6211\u4eec\u5185\u6838\u53c2\u6570\u7684net.core.somaxconn \u9650\u5236\u5230128\uff0c\u800cnginx \u5b9a\u4e49\u7684NGX_LISTEN_BACKLOG \u9ed8\u8ba4\u4e3a511\uff0c\u6240\u4ee5\u6709\u5fc5\u8981\u8c03\u6574\u8fd9\u4e2a\u503c\u3002\r\n\r\nnet.core.netdev_max_backlog = 262144\r\n\u6bcf\u4e2a\u7f51\u7edc\u63a5\u53e3\u63a5\u6536\u6570\u636e\u5305\u7684\u901f\u7387\u6bd4\u5185\u6838\u5904\u7406\u8fd9\u4e9b\u5305\u7684\u901f\u7387\u5feb\u65f6\uff0c\u5141\u8bb8\u9001\u5230\u961f\u5217\u7684\u6570\u636e\u5305\u7684\u6700\u5927\u6570\u76ee\u3002\r\n\r\nnet.ipv4.tcp_max_orphans = 262144\r\n\u7cfb\u7edf\u4e2d\u6700\u591a\u6709\u591a\u5c11\u4e2aTCP \u5957\u63a5\u5b57\u4e0d\u88ab\u5173\u8054\u5230\u4efb\u4f55\u4e00\u4e2a\u7528\u6237\u6587\u4ef6\u53e5\u67c4\u4e0a\u3002\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u6570\u5b57\uff0c\u5b64\u513f\u8fde\u63a5\u5c06\u5373\u523b\u88ab\u590d\u4f4d\u5e76\u6253\u5370\u51fa\u8b66\u544a\u4fe1\u606f\u3002\u8fd9\u4e2a\u9650\u5236\u4ec5\u4ec5\u662f\u4e3a\u4e86\u9632\u6b62\u7b80\u5355\u7684DoS \u653b\u51fb\uff0c\u4e0d\u80fd\u8fc7\u5206\u4f9d\u9760\u5b83\u6216\u8005\u4eba\u4e3a\u5730\u51cf\u5c0f\u8fd9\u4e2a\u503c\uff0c\u66f4\u5e94\u8be5\u589e\u52a0\u8fd9\u4e2a\u503c(\u5982\u679c\u589e\u52a0\u4e86\u5185\u5b58\u4e4b\u540e)\u3002\r\n\r\nnet.ipv4.tcp_max_syn_backlog = 262144\r\n\u8bb0\u5f55\u7684\u90a3\u4e9b\u5c1a\u672a\u6536\u5230\u5ba2\u6237\u7aef\u786e\u8ba4\u4fe1\u606f\u7684\u8fde\u63a5\u8bf7\u6c42\u7684\u6700\u5927\u503c\u3002\u5bf9\u4e8e\u6709128M \u5185\u5b58\u7684\u7cfb\u7edf\u800c\u8a00\uff0c\u7f3a\u7701\u503c\u662f1024\uff0c\u5c0f\u5185\u5b58\u7684\u7cfb\u7edf\u5219\u662f128\u3002\r\n\r\nnet.ipv4.tcp_timestamps = 0\r\n\u65f6\u95f4\u6233\u53ef\u4ee5\u907f\u514d\u5e8f\u5217\u53f7\u7684\u5377\u7ed5\u3002\u4e00\u4e2a1Gbps \u7684\u94fe\u8def\u80af\u5b9a\u4f1a\u9047\u5230\u4ee5\u524d\u7528\u8fc7\u7684\u5e8f\u5217\u53f7\u3002\u65f6\u95f4\u6233\u80fd\u591f\u8ba9\u5185\u6838\u63a5\u53d7\u8fd9\u79cd\u201c\u5f02\u5e38\u201d\u7684\u6570\u636e\u5305\u3002\u8fd9\u91cc\u9700\u8981\u5c06\u5176\u5173\u6389\u3002\r\n\r\nnet.ipv4.tcp_synack_retries = 1\r\n\u4e3a\u4e86\u6253\u5f00\u5bf9\u7aef\u7684\u8fde\u63a5\uff0c\u5185\u6838\u9700\u8981\u53d1\u9001\u4e00\u4e2aSYN \u5e76\u9644\u5e26\u4e00\u4e2a\u56de\u5e94\u524d\u9762\u4e00\u4e2aSYN \u7684ACK\u3002\u4e5f\u5c31\u662f\u6240\u8c13\u4e09\u6b21\u63e1\u624b\u4e2d\u7684\u7b2c\u4e8c\u6b21\u63e1\u624b\u3002\u8fd9\u4e2a\u8bbe\u7f6e\u51b3\u5b9a\u4e86\u5185\u6838\u653e\u5f03\u8fde\u63a5\u4e4b\u524d\u53d1\u9001SYN+ACK \u5305\u7684\u6570\u91cf\u3002\r\n\r\nnet.ipv4.tcp_syn_retries = 1\r\n\u5728\u5185\u6838\u653e\u5f03\u5efa\u7acb\u8fde\u63a5\u4e4b\u524d\u53d1\u9001SYN \u5305\u7684\u6570\u91cf\u3002\r\n\r\nnet.ipv4.tcp_fin_timeout = 1\r\n\u5982\u679c\u5957\u63a5\u5b57\u7531\u672c\u7aef\u8981\u6c42\u5173\u95ed\uff0c\u8fd9\u4e2a\u53c2\u6570\u51b3\u5b9a\u4e86\u5b83\u4fdd\u6301\u5728FIN-WAIT-2 \u72b6\u6001\u7684\u65f6\u95f4\u3002\u5bf9\u7aef\u53ef\u4ee5\u51fa\u9519\u5e76\u6c38\u8fdc\u4e0d\u5173\u95ed\u8fde\u63a5\uff0c\u751a\u81f3\u610f\u5916\u5f53\u673a\u3002\u7f3a\u7701\u503c\u662f60 \u79d2\u30022.2 \u5185\u6838\u7684\u901a\u5e38\u503c\u662f180 \u79d2\uff0c3\u4f60\u53ef\u4ee5\u6309\u8fd9\u4e2a\u8bbe\u7f6e\uff0c\u4f46\u8981\u8bb0\u4f4f\u7684\u662f\uff0c\u5373\u4f7f\u4f60\u7684\u673a\u5668\u662f\u4e00\u4e2a\u8f7b\u8f7d\u7684WEB \u670d\u52a1\u5668\uff0c\u4e5f\u6709\u56e0\u4e3a\u5927\u91cf\u7684\u6b7b\u5957\u63a5\u5b57\u800c\u5185\u5b58\u6ea2\u51fa\u7684\u98ce\u9669\uff0cFIN- WAIT-2 \u7684\u5371\u9669\u6027\u6bd4FIN-WAIT-1 \u8981\u5c0f\uff0c\u56e0\u4e3a\u5b83\u6700\u591a\u53ea\u80fd\u5403\u63891.5K \u5185\u5b58\uff0c\u4f46\u662f\u5b83\u4eec\u7684\u751f\u5b58\u671f\u957f\u4e9b\u3002\r\n\r\nnet.ipv4.tcp_keepalive_time = 30\r\n\u5f53keepalive \u8d77\u7528\u7684\u65f6\u5019\uff0cTCP \u53d1\u9001keepalive \u6d88\u606f\u7684\u9891\u5ea6\u3002\u7f3a\u7701\u662f2 \u5c0f\u65f6\u3002<\/pre>\n\u4e09\u3001\u4e0b\u9762\u8d34\u4e00\u4e2a\u5b8c\u6574\u7684\u5185\u6838\u4f18\u5316\u8bbe\u7f6e:<\/p>\n
vi \/etc\/sysctl.conf CentOS5.5\u4e2d\u53ef\u4ee5\u5c06\u6240\u6709\u5185\u5bb9\u6e05\u7a7a\u76f4\u63a5\u66ff\u6362\u4e3a\u5982\u4e0b\u5185\u5bb9:<\/p>\n
net.ipv4.ip_forward = 0\r\nnet.ipv4.conf.default.rp_filter = 1\r\nnet.ipv4.conf.default.accept_source_route = 0\r\nkernel.sysrq = 0\r\nkernel.core_uses_pid = 1\r\nnet.ipv4.tcp_syncookies = 1\r\nkernel.msgmnb = 65536\r\nkernel.msgmax = 65536\r\nkernel.shmmax = 68719476736\r\nkernel.shmall = 4294967296\r\nnet.ipv4.tcp_max_tw_buckets = 6000\r\nnet.ipv4.tcp_sack = 1\r\nnet.ipv4.tcp_window_scaling = 1\r\nnet.ipv4.tcp_rmem = 4096 87380 4194304\r\nnet.ipv4.tcp_wmem = 4096 16384 4194304\r\nnet.core.wmem_default = 8388608\r\nnet.core.rmem_default = 8388608\r\nnet.core.rmem_max = 16777216\r\nnet.core.wmem_max = 16777216\r\nnet.core.netdev_max_backlog = 262144\r\nnet.core.somaxconn = 262144\r\nnet.ipv4.tcp_max_orphans = 3276800\r\nnet.ipv4.tcp_max_syn_backlog = 262144\r\nnet.ipv4.tcp_timestamps = 0\r\nnet.ipv4.tcp_synack_retries = 1\r\nnet.ipv4.tcp_syn_retries = 1\r\nnet.ipv4.tcp_tw_recycle = 1\r\nnet.ipv4.tcp_tw_reuse = 1\r\nnet.ipv4.tcp_mem = 94500000 915000000 927000000\r\nnet.ipv4.tcp_fin_timeout = 1\r\nnet.ipv4.tcp_keepalive_time = 30\r\nnet.ipv4.ip_local_port_range = 1024 65000<\/pre>\n\u4f7f\u914d\u7f6e\u7acb\u5373\u751f\u6548\u53ef\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\uff1a
\n\/sbin\/sysctl -p<\/p>\n\u56db\u3001\u4e0b\u9762\u662f\u5173\u4e8e\u7cfb\u7edf\u8fde\u63a5\u6570\u7684\u4f18\u5316<\/p>\n
linux \u9ed8\u8ba4\u503c open files \u548c max user processes \u4e3a 1024
\n#ulimit -n
\n1024
\n#ulimit \u2013u
\n1024
\n\u95ee\u9898\u63cf\u8ff0\uff1a \u8bf4\u660e server \u53ea\u5141\u8bb8\u540c\u65f6\u6253\u5f00 1024 \u4e2a\u6587\u4ef6\uff0c\u5904\u7406 1024 \u4e2a\u7528\u6237\u8fdb\u7a0b
\n\u4f7f\u7528ulimit -a \u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u7cfb\u7edf\u7684\u6240\u6709\u9650\u5236\u503c\uff0c\u4f7f\u7528ulimit -n \u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u7684\u6700\u5927\u6253\u5f00\u6587\u4ef6\u6570\u3002
\n\u65b0\u88c5\u7684linux \u9ed8\u8ba4\u53ea\u67091024 \uff0c\u5f53\u4f5c\u8d1f\u8f7d\u8f83\u5927\u7684\u670d\u52a1\u5668\u65f6\uff0c\u5f88\u5bb9\u6613\u9047\u5230error: too many open files \u3002\u56e0\u6b64\uff0c\u9700\u8981\u5c06\u5176\u6539\u5927\u3002<\/p>\n\u89e3\u51b3\u65b9\u6cd5\uff1a
\n\u4f7f\u7528 ulimit \u2013n 65535 \u53ef\u5373\u65f6\u4fee\u6539\uff0c\u4f46\u91cd\u542f\u540e\u5c31\u65e0\u6548\u4e86\u3002\uff08\u6ce8ulimit -SHn 65535 \u7b49\u6548 ulimit -n 65535 \uff0c-S \u6307soft \uff0c-H \u6307hard)
\n\u6709\u5982\u4e0b\u4e09\u79cd\u4fee\u6539\u65b9\u5f0f\uff1a
\n1. \u5728\/etc\/rc.local \u4e2d\u589e\u52a0\u4e00\u884c ulimit -SHn 65535
\n2. \u5728\/etc\/profile \u4e2d\u589e\u52a0\u4e00\u884c ulimit -SHn 65535
\n3. \u5728\/etc\/security\/limits.conf \u6700\u540e\u589e\u52a0\uff1a<\/p>\n* soft nofile 65535\r\n* hard nofile 65535\r\n* soft nproc 65535\r\n* hard nproc 65535<\/pre>\n\u5177\u4f53\u4f7f\u7528\u54ea\u79cd\uff0c\u5728 CentOS \u4e2d\u4f7f\u7528\u7b2c1 \u79cd\u65b9\u5f0f\u65e0\u6548\u679c\uff0c\u4f7f\u7528\u7b2c3 \u79cd\u65b9\u5f0f\u6709\u6548\u679c\uff0c\u800c\u5728Debian \u4e2d\u4f7f\u7528\u7b2c2 \u79cd\u6709\u6548\u679c
\n# ulimit -n
\n65535
\n# ulimit -u
\n65535
\n\u5907\u6ce8\uff1aulimit \u547d\u4ee4\u672c\u8eab\u5c31\u6709\u5206\u8f6f\u786c\u8bbe\u7f6e\uff0c\u52a0-H \u5c31\u662f\u786c\uff0c\u52a0-S \u5c31\u662f\u8f6f\u9ed8\u8ba4\u663e\u793a\u7684\u662f\u8f6f\u9650\u5236
\nsoft \u9650\u5236\u6307\u7684\u662f\u5f53\u524d\u7cfb\u7edf\u751f\u6548\u7684\u8bbe\u7f6e\u503c\u3002 hard \u9650\u5236\u503c\u53ef\u4ee5\u88ab\u666e\u901a\u7528\u6237\u964d\u4f4e\u3002\u4f46\u662f\u4e0d\u80fd\u589e\u52a0\u3002 soft \u9650\u5236\u4e0d\u80fd\u8bbe\u7f6e\u7684\u6bd4 hard \u9650\u5236\u66f4\u9ad8\u3002 \u53ea\u6709 root \u7528\u6237\u624d\u80fd\u591f\u589e\u52a0 hard \u9650\u5236\u503c\u3002<\/p>\n\u4e94\u3001\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684nginx \u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n
user www www;\r\nworker_processes 8;\r\nworker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000\r\n01000000;\r\nerror_log \/www\/log\/nginx_error.log crit;\r\npid \/usr\/local\/nginx\/nginx.pid;\r\nworker_rlimit_nofile 204800;\r\nevents\r\n{\r\nuse epoll;\r\nworker_connections 204800;\r\n}\r\nhttp\r\n{\r\ninclude mime.types;\r\ndefault_type application\/octet-stream;\r\ncharset utf-8;\r\nserver_names_hash_bucket_size 128;\r\nclient_header_buffer_size 2k;\r\nlarge_client_header_buffers 4 4k;\r\nclient_max_body_size 8m;\r\nsendfile on;\r\ntcp_nopush on;\r\nkeepalive_timeout 60;\r\nfastcgi_cache_path \/usr\/local\/nginx\/fastcgi_cache levels=1:2\r\nkeys_zone=TEST:10m\r\ninactive=5m;\r\nfastcgi_connect_timeout 300;\r\nfastcgi_send_timeout 300;\r\nfastcgi_read_timeout 300;\r\nfastcgi_buffer_size 4k;\r\nfastcgi_buffers 8 4k;\r\nfastcgi_busy_buffers_size 8k;\r\nfastcgi_temp_file_write_size 8k;\r\nfastcgi_cache TEST;\r\nfastcgi_cache_valid 200 302 1h;\r\nfastcgi_cache_valid 301 1d;\r\nfastcgi_cache_valid any 1m;\r\nfastcgi_cache_min_uses 1;\r\nfastcgi_cache_use_stale error timeout invalid_header http_500;\r\nopen_file_cache max=204800 inactive=20s;\r\nopen_file_cache_min_uses 1;\r\nopen_file_cache_valid 30s;\r\ntcp_nodelay on;\r\ngzip on;\r\ngzip_min_length 1k;\r\ngzip_buffers 4 16k;\r\ngzip_http_version 1.0;\r\ngzip_comp_level 2;\r\ngzip_types text\/plain application\/x-javascript text\/css application\/xml;\r\ngzip_vary on;\r\nserver\r\n{\r\nlisten 8080;\r\nserver_name backup.aiju.com;\r\nindex index.php index.htm;\r\nroot \/www\/html\/;\r\nlocation \/status\r\n{\r\nstub_status on;\r\n}\r\nlocation ~ .*\\.(php|php5)?$\r\n{\r\nfastcgi_pass 127.0.0.1:9000;\r\nfastcgi_index index.php;\r\ninclude fcgi.conf;\r\n}\r\nlocation ~ .*\\.(gif|jpg|jpeg|png|bmp|swf|js|css)$\r\n{\r\nexpires 30d;\r\n}\r\nlog_format access \u2018$remote_addr \u2014 $remote_user [$time_local] \u201c$request\u201d \u2018\r\n\u2018$status $body_bytes_sent \u201c$http_referer\u201d \u2018\r\n\u2018\u201d$http_user_agent\u201d $http_x_forwarded_for\u2019;\r\naccess_log \/www\/log\/access.log access;\r\n}\r\n}<\/pre>\n\u516d\u3001\u5173\u4e8eFastCGI \u7684\u51e0\u4e2a\u6307\u4ee4\uff1a<\/p>\n
fastcgi_cache_path \/usr\/local\/nginx\/fastcgi_cache levels=1:2 keys_zone=TEST:10minactive=5m;
\n\u8fd9\u4e2a\u6307\u4ee4\u4e3aFastCGI \u7f13\u5b58\u6307\u5b9a\u4e00\u4e2a\u8def\u5f84\uff0c\u76ee\u5f55\u7ed3\u6784\u7b49\u7ea7\uff0c\u5173\u952e\u5b57\u533a\u57df\u5b58\u50a8\u65f6\u95f4\u548c\u975e\u6d3b\u52a8\u5220\u9664\u65f6\u95f4\u3002<\/p>\nfastcgi_connect_timeout 300;
\n\u6307\u5b9a\u8fde\u63a5\u5230\u540e\u7aefFastCGI \u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\nfastcgi_send_timeout 300;
\n\u5411FastCGI \u4f20\u9001\u8bf7\u6c42\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u8fd9\u4e2a\u503c\u662f\u6307\u5df2\u7ecf\u5b8c\u6210\u4e24\u6b21\u63e1\u624b\u540e\u5411FastCGI \u4f20\u9001\u8bf7\u6c42\u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\nfastcgi_read_timeout 300;
\n\u63a5\u6536FastCGI \u5e94\u7b54\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u8fd9\u4e2a\u503c\u662f\u6307\u5df2\u7ecf\u5b8c\u6210\u4e24\u6b21\u63e1\u624b\u540e\u63a5\u6536FastCGI \u5e94\u7b54\u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\nfastcgi_buffer_size 4k;
\n\u6307\u5b9a\u8bfb\u53d6FastCGI \u5e94\u7b54\u7b2c\u4e00\u90e8\u5206\u9700\u8981\u7528\u591a\u5927\u7684\u7f13\u51b2\u533a\uff0c\u4e00\u822c\u7b2c\u4e00\u90e8\u5206\u5e94\u7b54\u4e0d\u4f1a\u8d85\u8fc71k\uff0c\u7531\u4e8e\u9875\u9762\u5927\u5c0f\u4e3a4k\uff0c\u6240\u4ee5\u8fd9\u91cc\u8bbe\u7f6e\u4e3a4k\u3002<\/p>\nfastcgi_buffers 8 4k;
\n\u6307\u5b9a\u672c\u5730\u9700\u8981\u7528\u591a\u5c11\u548c\u591a\u5927\u7684\u7f13\u51b2\u533a\u6765\u7f13\u51b2FastCGI \u7684\u5e94\u7b54\u3002<\/p>\nfastcgi_busy_buffers_size 8k;
\n\u8fd9\u4e2a\u6307\u4ee4\u6211\u4e5f\u4e0d\u77e5\u9053\u662f\u505a\u4ec0\u4e48\u7528\uff0c\u53ea\u77e5\u9053\u9ed8\u8ba4\u503c\u662ffastcgi_buffers \u7684\u4e24\u500d\u3002<\/p>\nfastcgi_temp_file_write_size 8k;
\n\u5728\u5199\u5165fastcgi_temp_path \u65f6\u5c06\u7528\u591a\u5927\u7684\u6570\u636e\u5757\uff0c\u9ed8\u8ba4\u503c\u662ffastcgi_buffers \u7684\u4e24\u500d\u3002<\/p>\nfastcgi_cache TEST
\n\u5f00\u542fFastCGI \u7f13\u5b58\u5e76\u4e14\u4e3a\u5176\u5236\u5b9a\u4e00\u4e2a\u540d\u79f0\u3002\u4e2a\u4eba\u611f\u89c9\u5f00\u542f\u7f13\u5b58\u975e\u5e38\u6709\u7528\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4eCPU \u8d1f\u8f7d\uff0c\u5e76\u4e14\u9632\u6b62502 \u9519\u8bef\u3002<\/p>\nfastcgi_cache_valid 200 302 1h;
\nfastcgi_cache_valid 301 1d;
\nfastcgi_cache_valid any 1m;
\n\u4e3a\u6307\u5b9a\u7684\u5e94\u7b54\u4ee3\u7801\u6307\u5b9a\u7f13\u5b58\u65f6\u95f4\uff0c\u5982\u4e0a\u4f8b\u4e2d\u5c06200\uff0c302 \u5e94\u7b54\u7f13\u5b58\u4e00\u5c0f\u65f6\uff0c301 \u5e94\u7b54\u7f13\u5b581 \u5929\uff0c\u5176\u4ed6\u4e3a1 \u5206\u949f\u3002<\/p>\nfastcgi_cache_min_uses 1;
\n\u7f13\u5b58\u5728fastcgi_cache_path \u6307\u4ee4inactive \u53c2\u6570\u503c\u65f6\u95f4\u5185\u7684\u6700\u5c11\u4f7f\u7528\u6b21\u6570\uff0c\u5982\u4e0a\u4f8b\uff0c\u5982\u679c\u57285 \u5206\u949f\u5185\u67d0\u6587\u4ef61 \u6b21\u4e5f\u6ca1\u6709\u88ab\u4f7f\u7528\uff0c\u90a3\u4e48\u8fd9\u4e2a\u6587\u4ef6\u5c06\u88ab\u79fb\u9664\u3002<\/p>\nfastcgi_cache_use_stale error timeout invalid_header http_500;
\n\u4e0d\u77e5\u9053\u8fd9\u4e2a\u53c2\u6570\u7684\u4f5c\u7528\uff0c\u731c\u60f3\u5e94\u8be5\u662f\u8ba9nginx \u77e5\u9053\u54ea\u4e9b\u7c7b\u578b\u7684\u7f13\u5b58\u662f\u6ca1\u7528\u7684\u3002\u4ee5\u4e0a\u4e3anginx \u4e2dFastCGI \u76f8\u5173\u53c2\u6570\uff0c\u53e6\u5916\uff0cFastCGI \u81ea\u8eab\u4e5f\u6709\u4e00\u4e9b\u914d\u7f6e\u9700\u8981\u8fdb\u884c\u4f18\u5316\uff0c\u5982\u679c\u4f60\u4f7f\u7528php-fpm \u6765\u7ba1\u7406FastCGI\uff0c\u53ef\u4ee5\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u4ee5\u4e0b\u503c\uff1a<\/p>\n60
\n\u540c\u65f6\u5904\u7406\u7684\u5e76\u53d1\u8bf7\u6c42\u6570\uff0c\u5373\u5b83\u5c06\u5f00\u542f\u6700\u591a60 \u4e2a\u5b50\u7ebf\u7a0b\u6765\u5904\u7406\u5e76\u53d1\u8fde\u63a5\u3002<\/p>\n102400
\n\u6700\u591a\u6253\u5f00\u6587\u4ef6\u6570\u3002<\/p>\n204800
\n\u6bcf\u4e2a\u8fdb\u7a0b\u5728\u91cd\u7f6e\u4e4b\u524d\u80fd\u591f\u6267\u884c\u7684\u6700\u591a\u8bf7\u6c42\u6570\u3002<\/p>\n\u901a\u8fc7\u6d4f\u89c8\u5668\u67e5\u770b\u72b6\u6001<\/p>\n
\u901a\u8fc7web\u754c\u9762\u67e5\u770b\u65f6Nginx\u9700\u8981\u5f00\u542fstatus\u6a21\u5757\uff0c\u4e5f\u5c31\u662f\u5b89\u88c5Nginx\u65f6\u52a0\u4e0a
\n–with-http_stub_status_module \u7136\u540e\u914d\u7f6eNginx.conf\uff0c\u5728server\u70b9\u91cc\u9762\u52a0\u5165\u5982\u4e0b\u5185\u5bb9<\/p>\nlocation \/status {\r\nstub_status on;\r\naccess_log \/usr\/local\/nginx\/logs\/status.log;\r\nauth_basic NginxStatus;\r\n}<\/pre>\n\u914d\u7f6e\u5b8c\u540e\u91cd\u65b0\u542f\u52a8Nginx\u540e\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95eehttp:\/\/localhost\/status
\nActive connections \/\/\u5f53\u524d Nginx \u6b63\u5904\u7406\u7684\u6d3b\u52a8\u8fde\u63a5\u6570\u3002
\nserver accepts handledrequests \/\/\u603b\u5171\u5904\u7406\u4e868 \u4e2a\u8fde\u63a5 , \u6210\u529f\u521b\u5efa 8 \u6b21\u63e1\u624b,\u603b\u5171\u5904\u7406\u4e86500\u4e2a\u8bf7\u6c42\u3002
\nReading \/\/nginx \u8bfb\u53d6\u5230\u5ba2\u6237\u7aef\u7684 Header \u4fe1\u606f\u6570\u3002
\nWriting \/\/nginx \u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684 Header \u4fe1\u606f\u6570\u3002
\nWaiting \/\/\u5f00\u542f keep-alive \u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u503c\u7b49\u4e8e active – (reading + writing)\uff0c\u610f\u601d\u5c31\u662f Nginx \u5df2\u7ecf\u5904\u7406\u5b8c\u6b63\u5728\u7b49\u5019\u4e0b\u4e00\u6b21\u8bf7\u6c42\u6307\u4ee4\u7684\u9a7b\u7559\u8fde\u63a5<\/p>\n\u901a\u8fc7\u547d\u4ee4\u67e5\u770b<\/p>\n
#netstat -n | awk '\/^tcp\/ {++S[$NF]} END {for(a in S) print a, S[a]}'<\/pre>\n<\/p>\n
TIME_WAIT 17
\nESTABLISHED 3254
\nLAST_ACK 236
\nFIN_WAIT_1 648
\nFIN_WAIT_2 581
\nCLOSING 7
\nCLOSE_WAIT 4916
\n\u89e3\u6790\uff1a
\nCLOSED \/\/\u65e0\u8fde\u63a5\u662f\u6d3b\u52a8\u7684\u6216\u6b63\u5728\u8fdb\u884c
\nLISTEN \/\/\u670d\u52a1\u5668\u5728\u7b49\u5f85\u8fdb\u5165\u547c\u53eb
\nSYN_RECV \/\/\u4e00\u4e2a\u8fde\u63a5\u8bf7\u6c42\u5df2\u7ecf\u5230\u8fbe\uff0c\u7b49\u5f85\u786e\u8ba4
\nSYN_SENT \/\/\u5e94\u7528\u5df2\u7ecf\u5f00\u59cb\uff0c\u6253\u5f00\u4e00\u4e2a\u8fde\u63a5
\nESTABLISHED \/\/\u6b63\u5e38\u6570\u636e\u4f20\u8f93\u72b6\u6001\/\u5f53\u524d\u5e76\u53d1\u8fde\u63a5\u6570
\nFIN_WAIT1 \/\/\u5e94\u7528\u8bf4\u5b83\u5df2\u7ecf\u5b8c\u6210
\nFIN_WAIT2 \/\/\u53e6\u4e00\u8fb9\u5df2\u540c\u610f\u91ca\u653e
\nITMED_WAIT \/\/\u7b49\u5f85\u6240\u6709\u5206\u7ec4\u6b7b\u6389
\nCLOSING \/\/\u4e24\u8fb9\u540c\u65f6\u5c1d\u8bd5\u5173\u95ed
\nTIME_WAIT \/\/\u53e6\u4e00\u8fb9\u5df2\u521d\u59cb\u5316\u4e00\u4e2a\u91ca\u653e
\nLAST_ACK \/\/\u7b49\u5f85\u6240\u6709\u5206\u7ec4\u6b7b\u6389<\/div><\/p>\n<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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