{"id":35112,"date":"2025-05-02T13:50:44","date_gmt":"2025-05-02T05:50:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35112.html"},"modified":"2025-05-02T13:50:44","modified_gmt":"2025-05-02T05:50:44","slug":"%e3%80%90linux%e5%85%a5%e9%97%a8%e7%8e%af%e5%a2%83%e7%bc%96%e7%a8%8b%e3%80%91%e7%99%be%e4%b8%87%e5%b9%b6%e5%8f%91%e7%9a%84%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35112.html","title":{"rendered":"\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668"},"content":{"rendered":"<h3>\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668<\/h3>\n<h4>1 \u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668\u5b9e\u73b0<\/h4>\n<h5>tcp_server\u5b9e\u73b0\u767e\u4e07\u5e76\u53d1<\/h5>\n<ul>\n<li>\u5e76\u53d1\u2014\u2014\u4e00\u79d2\u949f\u7684\u8bf7\u6c42\u6570\u91cf&#xff08;qps&#xff09;<\/li>\n<\/ul>\n<h5>\u5b9e\u73b0\u6b65\u9aa4&#xff1a;<\/h5>\n<li>\n<p>\u51c6\u59074\u4e2a\u865a\u62df\u673a&#xff0c;\u6700\u5c0f\u8981\u6c42&#xff1a;<\/p>\n<ul>\n<li>\u81f3\u5c11\u4e00\u4e2a4G\u5185\u5b58&#xff0c;2\u6838CPU&#xff0c;\u4f5c\u4e3a\u670d\u52a1\u5668\u2014\u2014Server\u2014\u2014128<\/li>\n<li>\u53e6\u5916\u4e09\u4e2a2G\u5185\u5b58&#xff0c;1\u6838CPU&#xff0c;\u4f5c\u4e3a\u5ba2\u6237\u7aef\u2014\u2014Client\u2014\u2014129\u3001130\u3001131<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u670d\u52a1\u5668\u4ee3\u7801&#xff1a;tcp_server.c<\/p>\n<ul>\n<li>\u6ce8\u610f\u53d8\u5316&#xff1a;\u6bcf\u65b0\u589e\u4e00\u4e2a\u8fde\u63a5&#xff0c;\u65b0\u589e\u4e00\u4e2a\u7aef\u53e3<\/li>\n<\/ul>\n<p>\/\/\u989d\u5916\u5f15\u5165\u5934\u6587\u4ef6<\/p>\n<p>#include &lt;unistd.h&gt;<\/p>\n<\/li>\n<li>\n<p>\u5ba2\u6237\u7aef\u6d4b\u8bd5\u4ee3\u7801&#xff1a;mul_port_client_epoll.c<\/p>\n<ul>\n<li>\u6ce8\u610f\u6839\u636e\u670d\u52a1\u5668\u80fd\u63a5\u53d7\u7684\u7aef\u53e3\u6570\u91cf&#xff0c;\u8bbe\u7f6eMAX_PORT\u7684\u7aef\u53e3\u6570\u91cf<\/li>\n<\/ul>\n<p>\/\/\u989d\u5916\u5f15\u5165\u5934\u6587\u4ef6<\/p>\n<p>#include &lt;unistd.h&gt;<\/p>\n<p>#include &lt;sys\/time.h&gt;<\/p>\n<\/li>\n<h5>\u4ee3\u7801\u5b9e\u73b0<\/h5>\n<h6>tcp_server.c<\/h6>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;string.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<\/p>\n<p>#include &lt;netinet\/tcp.h&gt;<br \/>\n#include &lt;arpa\/inet.h&gt;<br \/>\n#include &lt;pthread.h&gt;<\/p>\n<p>#include &lt;errno.h&gt;<br \/>\n#include &lt;fcntl.h&gt;<\/p>\n<p>#include &lt;sys\/epoll.h&gt;<\/p>\n<p>#include &lt;unistd.h&gt;<\/p>\n<p>#define BUFFER_LENGTH1024<br \/>\n#define EPOLL_SIZE1024<\/p>\n<p>#define MAX_PORT100 \/\/ \u6700\u5927\u53ef\u590d\u7528\u7aef\u53e3\u6570\u91cf<\/p>\n<p>void *client_routine(void *arg) {<\/p>\n<p>int clientfd &#061; *(int *)arg;<\/p>\n<p>while (1) {<\/p>\n<p>char buffer[BUFFER_LENGTH] &#061; {0};<br \/>\nint len &#061; recv(clientfd, buffer, BUFFER_LENGTH, 0);<br \/>\nif (len &lt; 0) {<br \/>\nclose(clientfd);<br \/>\nbreak;<br \/>\n} else if (len &#061;&#061; 0) { \/\/ disconnect<br \/>\nclose(clientfd);<br \/>\nbreak;<br \/>\n} else {<br \/>\nprintf(&#034;Recv: %s, %d byte(s)\\\\n&#034;, buffer, len);<br \/>\n}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>\/\/ \u68c0\u67e5\u4f20\u5165\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26 fd \u662f\u5426\u5b58\u5728\u4e8e\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u7ec4 fds \u4e2d<br \/>\nint islistenfd(int fd, int *fds) {<\/p>\n<p>int i &#061; 0;<br \/>\nfor (i &#061; 0;i &lt; MAX_PORT;i &#043;&#043;) {<br \/>\nif (fd &#061;&#061; *(fds&#043;i)) return fd;<br \/>\n}<\/p>\n<p>return 0;<br \/>\n}<\/p>\n<p>\/\/ .\/tcp_server <\/p>\n<p>int main(int argc, char *argv[]) {<\/p>\n<p>if (argc &lt; 2) {<br \/>\nprintf(&#034;Param Error\\\\n&#034;);<br \/>\nreturn -1;<br \/>\n}<\/p>\n<p>int port &#061; atoi(argv[1]); \/\/ start<br \/>\nint sockfds[MAX_PORT] &#061; {0}; \/\/ listen fd<br \/>\nint epfd &#061; epoll_create(1);  <\/p>\n<p>int i &#061; 0;<br \/>\nfor (i &#061; 0;i &lt; MAX_PORT;i &#043;&#043;) { \/\/ \u6bcf\u521b\u5efa100\u4e2a\u7aef\u53e3<\/p>\n<p>int sockfd &#061; socket(AF_INET, SOCK_STREAM, 0);<\/p>\n<p>struct sockaddr_in addr;<br \/>\nmemset(&amp;addr, 0, sizeof(struct sockaddr_in));<br \/>\naddr.sin_family &#061; AF_INET;<br \/>\naddr.sin_port &#061; htons(port&#043;i); \/\/ 8888 8889 8890 8891 &#8230;. 8987<br \/>\naddr.sin_addr.s_addr &#061; INADDR_ANY; <\/p>\n<p>if (bind(sockfd, (struct sockaddr*)&amp;addr, sizeof(struct sockaddr_in)) &lt; 0) {<br \/>\nperror(&#034;bind&#034;);<br \/>\nreturn 2;<br \/>\n}<\/p>\n<p>if (listen(sockfd, 5) &lt; 0) {<br \/>\nperror(&#034;listen&#034;);<br \/>\nreturn 3;<br \/>\n}<br \/>\nprintf(&#034;tcp server listen on port : %d\\\\n&#034;, port &#043; i);<\/p>\n<p>\/\/<br \/>\nstruct epoll_event ev;<br \/>\nev.events &#061; EPOLLIN;<br \/>\nev.data.fd &#061; sockfd;<br \/>\nepoll_ctl(epfd, EPOLL_CTL_ADD, sockfd, &amp;ev);<\/p>\n<p>sockfds[i] &#061; sockfd;<br \/>\n}<br \/>\n\/\/ <\/p>\n<p>#if 0<\/p>\n<p>while (1) {<\/p>\n<p>struct sockaddr_in client_addr;<br \/>\nmemset(&amp;client_addr, 0, sizeof(struct sockaddr_in));<br \/>\nsocklen_t client_len &#061; sizeof(client_addr);<\/p>\n<p>int clientfd &#061; accept(sockfd, (struct sockaddr*)&amp;client_addr, &amp;client_len);<\/p>\n<p>pthread_t thread_id;<br \/>\npthread_create(&amp;thread_id, NULL, client_routine, &amp;clientfd);<\/p>\n<p>}<\/p>\n<p>#else<\/p>\n<p>struct epoll_event events[EPOLL_SIZE] &#061; {0};<\/p>\n<p>while (1) {<\/p>\n<p>int nready &#061; epoll_wait(epfd, events, EPOLL_SIZE, 5); \/\/ -1, 0, 5<br \/>\nif (nready &#061;&#061; -1) continue;<\/p>\n<p>int i &#061; 0;<br \/>\nfor (i &#061; 0;i &lt; nready;i &#043;&#043;) {<\/p>\n<p>int sockfd &#061; islistenfd(events[i].data.fd, sockfds);<br \/>\nif (sockfd) { \/\/ listen 2<\/p>\n<p>struct sockaddr_in client_addr;<br \/>\nmemset(&amp;client_addr, 0, sizeof(struct sockaddr_in));<br \/>\nsocklen_t client_len &#061; sizeof(client_addr);<\/p>\n<p>int clientfd &#061; accept(sockfd, (struct sockaddr*)&amp;client_addr, &amp;client_len);<\/p>\n<p>fcntl(clientfd, F_SETFL, O_NONBLOCK);<\/p>\n<p>int reuse &#061; 1;<br \/>\nsetsockopt(clientfd, SOL_SOCKET, SO_REUSEADDR, (char *)&amp;reuse, sizeof(reuse));<\/p>\n<p>struct epoll_event ev;<br \/>\nev.events &#061; EPOLLIN | EPOLLET;<br \/>\nev.data.fd &#061; clientfd;<br \/>\nepoll_ctl(epfd, EPOLL_CTL_ADD, clientfd, &amp;ev);<\/p>\n<p>} else {<\/p>\n<p>int clientfd &#061; events[i].data.fd;<\/p>\n<p>char buffer[BUFFER_LENGTH] &#061; {0};<br \/>\nint len &#061; recv(clientfd, buffer, BUFFER_LENGTH, 0);<br \/>\nif (len &lt; 0) {<br \/>\nclose(clientfd);<\/p>\n<p>struct epoll_event ev;<br \/>\nev.events &#061; EPOLLIN;<br \/>\nev.data.fd &#061; clientfd;<br \/>\nepoll_ctl(epfd, EPOLL_CTL_DEL, clientfd, &amp;ev);<\/p>\n<p>} else if (len &#061;&#061; 0) { \/\/ disconnect<br \/>\nclose(clientfd);<\/p>\n<p>struct epoll_event ev;<br \/>\nev.events &#061; EPOLLIN;<br \/>\nev.data.fd &#061; clientfd;<br \/>\nepoll_ctl(epfd, EPOLL_CTL_DEL, clientfd, &amp;ev);<\/p>\n<p>} else {<br \/>\nprintf(&#034;Recv: %s, %d byte(s), clientfd: %d\\\\n&#034;, buffer, len, clientfd);<br \/>\n}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>#endif<\/p>\n<p>return 0;<br \/>\n}<\/p>\n<h6>mul_port_client_epoll.c<\/h6>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;string.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<\/p>\n<p>#include &lt;sys\/types.h&gt;<br \/>\n#include &lt;sys\/socket.h&gt;<br \/>\n#include &lt;sys\/epoll.h&gt;<br \/>\n#include &lt;errno.h&gt;<br \/>\n#include &lt;netinet\/tcp.h&gt;<br \/>\n#include &lt;arpa\/inet.h&gt;<br \/>\n#include &lt;netdb.h&gt;<br \/>\n#include &lt;fcntl.h&gt;<\/p>\n<p>#include &lt;unistd.h&gt;<br \/>\n#include &lt;sys\/time.h&gt;<\/p>\n<p>#define MAX_BUFFER128<br \/>\n#define MAX_EPOLLSIZE(384*1024)<br \/>\n#define MAX_PORT100<\/p>\n<p>#define TIME_SUB_MS(tv1, tv2)  ((tv1.tv_sec &#8211; tv2.tv_sec) * 1000 &#043; (tv1.tv_usec &#8211; tv2.tv_usec) \/ 1000)<\/p>\n<p>int isContinue &#061; 0;<\/p>\n<p>static int ntySetNonblock(int fd) {<br \/>\nint flags;<\/p>\n<p>flags &#061; fcntl(fd, F_GETFL, 0);<br \/>\nif (flags &lt; 0) return flags;<br \/>\nflags |&#061; O_NONBLOCK;<br \/>\nif (fcntl(fd, F_SETFL, flags) &lt; 0) return -1;<br \/>\nreturn 0;<br \/>\n}<\/p>\n<p>static int ntySetReUseAddr(int fd) {<br \/>\nint reuse &#061; 1;<br \/>\nreturn setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&amp;reuse, sizeof(reuse));<br \/>\n}<\/p>\n<p>int main(int argc, char **argv) {<br \/>\nif (argc &lt;&#061; 2) {<br \/>\nprintf(&#034;Usage: %s ip port\\\\n&#034;, argv[0]);<br \/>\nexit(0);<br \/>\n}<\/p>\n<p>const char *ip &#061; argv[1];<br \/>\nint port &#061; atoi(argv[2]);<br \/>\nint connections &#061; 0;<br \/>\nchar buffer[128] &#061; {0};<br \/>\nint i &#061; 0, index &#061; 0;<\/p>\n<p>struct epoll_event events[MAX_EPOLLSIZE];<\/p>\n<p>int epoll_fd &#061; epoll_create(MAX_EPOLLSIZE);<\/p>\n<p>strcpy(buffer, &#034; Data From MulClient\\\\n&#034;);<\/p>\n<p>struct sockaddr_in addr;<br \/>\nmemset(&amp;addr, 0, sizeof(struct sockaddr_in));<\/p>\n<p>addr.sin_family &#061; AF_INET;<br \/>\naddr.sin_addr.s_addr &#061; inet_addr(ip);<\/p>\n<p>struct timeval tv_begin;<br \/>\ngettimeofday(&amp;tv_begin, NULL);<\/p>\n<p>while (1) {<br \/>\nif (&#043;&#043;index &gt;&#061; MAX_PORT) index &#061; 0;<\/p>\n<p>struct epoll_event ev;<br \/>\nint sockfd &#061; 0;<\/p>\n<p>if (connections &lt; 340000 &amp;&amp; !isContinue) {<br \/>\nsockfd &#061; socket(AF_INET, SOCK_STREAM, 0);<br \/>\nif (sockfd &#061;&#061; -1) {<br \/>\nperror(&#034;socket&#034;);<br \/>\ngoto err;<br \/>\n}<\/p>\n<p>\/\/ntySetReUseAddr(sockfd);<br \/>\naddr.sin_port &#061; htons(port&#043;index);<\/p>\n<p>if (connect(sockfd, (struct sockaddr*)&amp;addr, sizeof(struct sockaddr_in)) &lt; 0) {<br \/>\nprintf(&#034;port, index : %d, %d\\\\n&#034;, port, index);<br \/>\nperror(&#034;connect&#034;);<br \/>\ngoto err;<br \/>\n}<br \/>\nntySetNonblock(sockfd);<br \/>\nntySetReUseAddr(sockfd);<\/p>\n<p>sprintf(buffer, &#034;Hello Server: client &#8211;&gt; %d\\\\n&#034;, connections);<br \/>\nsend(sockfd, buffer, strlen(buffer), 0);<\/p>\n<p>ev.data.fd &#061; sockfd;<br \/>\nev.events &#061; EPOLLIN | EPOLLOUT;<br \/>\nepoll_ctl(epoll_fd, EPOLL_CTL_ADD, sockfd, &amp;ev);<\/p>\n<p>connections &#043;&#043;;<br \/>\n}<br \/>\n\/\/connections &#043;&#043;;<br \/>\nif (connections % 1000 &#061;&#061; 999 || connections &gt;&#061; 340000) {<br \/>\nstruct timeval tv_cur;<br \/>\nmemcpy(&amp;tv_cur, &amp;tv_begin, sizeof(struct timeval));<\/p>\n<p>gettimeofday(&amp;tv_begin, NULL);<\/p>\n<p>int time_used &#061; TIME_SUB_MS(tv_begin, tv_cur);<br \/>\nprintf(&#034;connections: %d, sockfd:%d, time_used:%d\\\\n&#034;, connections, sockfd, time_used);<\/p>\n<p>int nfds &#061; epoll_wait(epoll_fd, events, connections, 100);<br \/>\nfor (i &#061; 0;i &lt; nfds;i &#043;&#043;) {<br \/>\nint clientfd &#061; events[i].data.fd;<\/p>\n<p>if (events[i].events &amp; EPOLLOUT) {<br \/>\nsprintf(buffer, &#034;data from %d\\\\n&#034;, clientfd);<br \/>\nsend(sockfd, buffer, strlen(buffer), 0);<br \/>\n} else if (events[i].events &amp; EPOLLIN) {<br \/>\nchar rBuffer[MAX_BUFFER] &#061; {0};<br \/>\nssize_t length &#061; recv(sockfd, rBuffer, MAX_BUFFER, 0);<br \/>\nif (length &gt; 0) {<br \/>\nprintf(&#034; RecvBuffer:%s\\\\n&#034;, rBuffer);<\/p>\n<p>if (!strcmp(rBuffer, &#034;quit&#034;)) {<br \/>\nisContinue &#061; 0;<br \/>\n}<\/p>\n<p>} else if (length &#061;&#061; 0) {<br \/>\nprintf(&#034; Disconnect clientfd:%d\\\\n&#034;, clientfd);<br \/>\nconnections &#8211;;<br \/>\nclose(clientfd);<br \/>\n} else {<br \/>\nif (errno &#061;&#061; EINTR) continue;<\/p>\n<p>printf(&#034; Error clientfd:%d, errno:%d\\\\n&#034;, clientfd, errno);<br \/>\nclose(clientfd);<br \/>\n}<br \/>\n} else {<br \/>\nprintf(&#034; clientfd:%d, errno:%d\\\\n&#034;, clientfd, errno);<br \/>\nclose(clientfd);<br \/>\n}<br \/>\n}<br \/>\n}<\/p>\n<p>usleep(1 * 1000);<br \/>\n}<\/p>\n<p>return 0;<\/p>\n<p>err:<br \/>\nprintf(&#034;error : %s\\\\n&#034;, strerror(errno));<br \/>\nreturn 0;<\/p>\n<p>}<\/p>\n<h5>\u767e\u4e07\u5e76\u53d1\u670d\u52a1\u5668\u51fa\u73b0\u95ee\u9898&#xff1a;<\/h5>\n<h6>connection refused\u95ee\u9898&#xff1a;<\/h6>\n<p>sudo .\/2_mul_port_client_epoll 192.168.21.128 80<br \/>\nconnect: Connection refused<br \/>\nerror : Connection refused<\/p>\n<ul>\n<li>\n<p>\u670d\u52a1\u5668\u4e0d\u5141\u8bb8\u94fe\u63a5,\u53ef\u80fd\u539f\u56e01&#xff1a;\u6587\u4ef6\u7cfb\u7edf\u9ed8\u8ba4\u6bcf\u4e2a\u8fdb\u7a0b\u7684fd\u4e2a\u6570\u53ea\u67091024\u4e2a<\/p>\n<ul>\n<li>\n<p>\u4fee\u6539\u6587\u4ef6 \/etc\/security\/limits.conf,\u52a0\u5165<\/p>\n<p> *       soft    nofile  1048576<br \/>\n*       hard    nofile  1048576<\/p>\n<p>\u4fee\u6539\u5b8c\u6210\u540e\u91cd\u542f sudo reboot<\/p>\n<\/li>\n<li>\n<p>\u4e5f\u53ef\u4ee5\u901a\u8fc7 ulimit -a\u8fdb\u884c\u4fee\u6539&#xff1a;<\/p>\n<p> sudo su<br \/>\nsudo ulimit -n 1048576\n <\/li>\n<li>\n<p>\u51fa\u73b0\u95ee\u9898&#xff1a;\u5728 Ubuntu 20 \u4e2d\u65e0\u6cd5\u4fee\u6539open files (-n)\u9650\u5236<\/p>\n<ul>\n<li>\n<p>\u67e5\u627e\u539f\u56e0&#xff1a;Ubuntu 20 \u53ef\u80fd\u4f7f\u7528\u4e86systemd\u7684\u8d44\u6e90\u63a7\u5236\u529f\u80fd<\/p>\n<\/li>\n<li>\n<p>\u8fdb\u5165\/etc\/systemd\/system.conf\u68c0\u67e5\u662f\u5426\u6709\u5bf9LimitNOFILE&#xff08;\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236&#xff09;\u7684\u8bbe\u7f6e&#xff0c;\u53d1\u73b0<\/p>\n<p> #DefaultLimitNOFILE&#061;1024:52428<\/p>\n<p>\u627e\u5230\u539f\u56e0&#xff0c;\u4fee\u6539\u6210&#xff1a;<\/p>\n<p> #DefaultLimitNOFILE&#061;1024:1048576\n <\/li>\n<li>\n<p>\u518d\u6b21\u6267\u884c\u4ee5\u4e0a\u4fee\u6539&#xff0c;\u4fee\u6539\u6210\u529f&#xff01;<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6>request address\u95ee\u9898&#xff1a;<\/h6>\n<ul>\n<li>\n<h6>\u5ba2\u6237\u7aef\u62a5\u9519request address\u95ee\u9898&#xff0c;\u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u8fbe\u523027000\u4e4b\u524d\u8fde\u63a5\u65ad\u5f00&#xff0c;\u53ef\u80fd\u95ee\u9898&#xff1a;\u5ba2\u6237\u7aef\u7aef\u53e3\u5730\u5740\u8017\u5c3d<\/h6>\n<ul>\n<li>\u7aef\u53e3\u5730\u5740\u53ea\u670965535\u4e2a&#xff0c;\u5982\u4f55\u5f00\u542f\u591a\u4e2a\u7aef\u53e3\u5b9e\u73b0\u76d1\u542c<\/li>\n<li>\u89e3\u51b3\u65b9\u6cd5&#xff1a;\u628a\u670d\u52a1\u5668\u7684\u76d1\u542c\u7aef\u53e3\u589e\u52a0\u5230100\u4e2a&#xff0c;\u9488\u5bf9\u4e0d\u540c\u7684<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6>connection timed out\u95ee\u9898<\/h6>\n<ul>\n<li>\n<p>\u5ba2\u6237\u7aef\u53c8\u62a5\u9519connection timed out\u95ee\u9898&#xff0c;\u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u8fbe\u523065000\u4e4b\u524d\u65ad\u5f00&#xff0c;\u53ef\u80fd\u95ee\u9898&#xff1a; \u6587\u4ef6\u7cfb\u7edf\u8fbe\u5230\u6700\u5927\u503c&#xff0c;\u9632\u706b\u5899\u8fde\u63a5\u8fbe\u5230\u6700\u5927\u503c<\/p>\n<ul>\n<li>\n<p>\u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf\u6700\u5927\u503c fs.file-max&#xff1a;<\/p>\n<p> cat \/proc\/sys\/fs\/file-max<\/p>\n<p>\u670d\u52a1\u5668\u8fd4\u56de&#xff1a;9223372036854775807&#xff0c;\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de&#xff1a;397322<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u5185\u6838\u4e2d\u9632\u706b\u5899\u5bf9\u5916\u8fde\u63a5\u6700\u5927\u503c nf_conntrack_max<\/p>\n<p> cat \/proc\/sys\/net\/netfilter\/nf_ \/\/\u7528tab\u67e5\u627e\u4f60\u60f3\u8981\u7684\u4fe1\u606f<\/p>\n<p>\u670d\u52a1\u5668\u8fd4\u56de&#xff1a;65535&#xff0c;\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de&#xff1a;65535<\/p>\n<p>\u5982\u679c\u6ca1\u6709nf_conntrack_max\u53ef\u4ee5\u52a0\u8f7d\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p> sudo modprobe ip_conntrack<\/p>\n<p>\u5185\u6838\u4e2d\u7684\u53c2\u6570\u8bbe\u7f6e\u90fd\u53ef\u4ee5\u8fdb\u5165 \/etc\/sysctl.conf<\/p>\n<p> sudo vim \/etc\/sysctl.conf<\/p>\n<p>\u589e\u52a0&#xff1a;<\/p>\n<p> fs.file-max &#061; 1048576<br \/>\nnet.netfilter.nf_conntrack_max&#061;1048576 \/\/ubuntu20\\\\16\u53ef\u7528<\/p>\n<p>\u547d\u4ee4\u751f\u6548&#xff1a;<\/p>\n<p> sudo sysctl -p<\/p>\n<p>\u5982\u679c\u51fa\u73b0\u62a5\u9519&#xff1a;<\/p>\n<p> sysctl: cannot stat \/proc\/sys\/net\/netfilter\/nf_conntrack max: No such file or directory<\/p>\n<p>\u53ef\u4ee5\u52a0\u8f7d\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p> sudo modprobe ip_conntrack\n <\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6>\u670d\u52a1\u5668\u5185\u5b58\u5d29\u6e83&#xff0c;\u5185\u5b58\u56de\u6536<\/h6>\n<ul>\n<li>\n<p>\u8dd1\u523079w\u5de6\u53f3\u65f6&#xff0c;\u670d\u52a1\u5668\u5185\u5b58\u5d29\u6e83&#xff0c;CPU\u5229\u7528\u7387\u8fbe\u5230100%<\/p>\n<\/li>\n<li>\n<p>\u572820w\u5de6\u53f3\u65f6&#xff0c;\u800c\u4e14\u8fde\u63a5\u4e00\u5f00\u59cb\u65f6\u670d\u52a1\u5668\u5185\u5b58\u5c31\u5df2\u7ecf\u8dd1\u6ee1&#xff0c;\u5f00\u59cb\u5185\u5b58\u56de\u6536<\/p>\n<\/li>\n<li>\n<p>\u6ce8\u610fCPU\u548c\u5185\u5b58\u4e0d\u8981\u8d85\u8fc780%<\/p>\n<\/li>\n<li>\n<p>\u6bcf\u6b21\u542f\u52a8\u65f6\u90fd\u8981\u91cd\u65b0\u6267\u884c sudo sysctl -p<\/p>\n<p> net.ipv4.tcp_mem  &#061; 252144 524288 786432<br \/>\nnet.ipv4.tcp_wmem &#061; 1024 1024 2048<br \/>\nnet.ipv4.tcp_rmem &#061; 1024 1024 2048<\/p>\n<p>\u8fd9\u662fTCP\u534f\u8bae\u6808\u7684\u914d\u7f6e&#xff0c;\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>tcp_mem &#061; 252144 524288 786432 \u6307TCP\u534f\u8bae\u6808\u7684\u603b\u5185\u5b58\u5bb9\u91cf\u4e3a 1G 2G 3G&#xff0c;\u5373\u5728\u5185\u5b581<sub>2G\u4e4b\u95f4\u65f6\u4e0d\u505a\u64cd\u4f5c&#xff0c;\u5728\u5185\u5b582<\/sub>3G\u4e4b\u95f4\u65f6\u51cf\u7f13\u5206\u914d&#xff0c;\u5728\u5185\u5b583G\u4e4b\u4e0a\u65f6\u505c\u6b62\u5206\u914d&#xff1b;<\/li>\n<li>tcp_wmem &#061; 1024 1024 2048\u6307socket\u53d1\u9001\u7f13\u51b2\u533a\u4e3a 1K 1K 2K&#xff0c;\u5206\u522b\u662f\u6700\u5c0f\u3001\u9ed8\u8ba4\u3001\u6700\u5927<\/li>\n<li>tcp_rmem &#061; 1024 1024 2048\u6307socket\u63a5\u6536\u7f13\u51b2\u533a\u4e3a 1K 1K 2K&#xff0c;\u5206\u522b\u662f\u6700\u5c0f\u3001\u9ed8\u8ba4\u3001\u6700\u5927<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6>\u670d\u52a1\u5668CPU\u5d29\u6e83&#xff0c;CPU\u4f7f\u7528\u7387\u5360\u6ee1<\/h6>\n<ul>\n<li>\u4e00\u65e6\u6570\u636e\u8fde\u63a5\u523080w&#xff08;804453\\\\804125&#xff09;&#xff0c;CPU\u6838\u5fc3\u4f1a\u5168\u90e8\u7a81\u7136\u5360\u7528100%&#xff08;8\u4e2a\u6838\u5fc3\u90fd\u4e0d\u7ba1\u7528&#xff09;&#xff0c;\u7136\u540e\u8fdb\u7a0b\u5d29\u6e83<\/li>\n<\/ul>\n<p>https:\/\/github.com\/0voice<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb655\u6b21\uff0c\u70b9\u8d5e15\u6b21\uff0c\u6536\u85cf9\u6b21\u3002\u5ba2\u6237\u7aef\u53c8\u62a5\u9519connection timed out\u95ee\u9898\uff0c\u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u8fbe\u523065000\u4e4b\u524d\u65ad\u5f00\uff0c\u53ef\u80fd\u95ee\u9898\uff1a \u6587\u4ef6\u7cfb\u7edf\u8fbe\u5230\u6700\u5927\u503c\uff0c\u9632\u706b\u5899\u8fde\u63a5\u8fbe\u5230\u6700\u5927\u503c\u3002\u670d\u52a1\u5668\u8fd4\u56de\uff1a9223372036854775807\uff0c\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de\uff1a397322\u3002\u572820w\u5de6\u53f3\u65f6\uff0c\u800c\u4e14\u8fde\u63a5\u4e00\u5f00\u59cb\u65f6\u670d\u52a1\u5668\u5185\u5b58\u5c31\u5df2\u7ecf\u8dd1\u6ee1\uff0c\u5f00\u59cb\u5185\u5b58\u56de\u6536\u3002\u5ba2\u6237\u7aef\u6d4b\u8bd5\u4ee3\u7801\uff1amul_port_client_epoll.c\u3002\u8dd1\u523079w\u5de6\u53f3\u65f6\uff0c\u670d\u52a1\u5668\u5185\u5b58\u5d29\u6e83\uff0cCPU\u5229\u7528\u7387\u8fbe\u5230100%\u670d\u52a1\u5668\u8fd4\u56de\uff1a65535\uff0c\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de\uff1a65535\u3002\u518d\u6b21\u6267\u884c\u4ee5\u4e0a\u4fee\u6539\uff0c\u4fee\u6539\u6210\u529f\uff01<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2990,58,43,78],"topic":[],"class_list":["post-35112","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-linux","tag-43","tag-78"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/35112.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb655\u6b21\uff0c\u70b9\u8d5e15\u6b21\uff0c\u6536\u85cf9\u6b21\u3002\u5ba2\u6237\u7aef\u53c8\u62a5\u9519connection timed out\u95ee\u9898\uff0c\u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u8fbe\u523065000\u4e4b\u524d\u65ad\u5f00\uff0c\u53ef\u80fd\u95ee\u9898\uff1a \u6587\u4ef6\u7cfb\u7edf\u8fbe\u5230\u6700\u5927\u503c\uff0c\u9632\u706b\u5899\u8fde\u63a5\u8fbe\u5230\u6700\u5927\u503c\u3002\u670d\u52a1\u5668\u8fd4\u56de\uff1a9223372036854775807\uff0c\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de\uff1a397322\u3002\u572820w\u5de6\u53f3\u65f6\uff0c\u800c\u4e14\u8fde\u63a5\u4e00\u5f00\u59cb\u65f6\u670d\u52a1\u5668\u5185\u5b58\u5c31\u5df2\u7ecf\u8dd1\u6ee1\uff0c\u5f00\u59cb\u5185\u5b58\u56de\u6536\u3002\u5ba2\u6237\u7aef\u6d4b\u8bd5\u4ee3\u7801\uff1amul_port_client_epoll.c\u3002\u8dd1\u523079w\u5de6\u53f3\u65f6\uff0c\u670d\u52a1\u5668\u5185\u5b58\u5d29\u6e83\uff0cCPU\u5229\u7528\u7387\u8fbe\u5230100%\u670d\u52a1\u5668\u8fd4\u56de\uff1a65535\uff0c\u4e09\u4e2a\u5ba2\u6237\u7aef\u8fd4\u56de\uff1a65535\u3002\u518d\u6b21\u6267\u884c\u4ee5\u4e0a\u4fee\u6539\uff0c\u4fee\u6539\u6210\u529f\uff01\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/35112.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-02T05:50:44+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35112.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/35112.html\",\"name\":\"\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2025-05-02T05:50:44+00:00\",\"dateModified\":\"2025-05-02T05:50:44+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/35112.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/35112.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35112.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010Linux\u5165\u95e8\u73af\u5883\u7f16\u7a0b\u3011\u767e\u4e07\u5e76\u53d1\u7684\u670d\u52a1\u5668\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required 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