{"id":116783,"date":"2026-10-22T03:48:44","date_gmt":"2026-10-21T19:48:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/116783.html"},"modified":"2026-10-22T03:48:44","modified_gmt":"2026-10-21T19:48:44","slug":"%e7%8e%b0%e4%bb%a3%e7%bd%91%e7%bb%9c%e4%ba%8b%e4%bb%b6%e5%a4%9a%e8%b7%af%e5%a4%8d%e7%94%a8%e7%9a%84%e5%86%85%e5%ad%98%e5%af%b9%e9%bd%90%e4%b8%8e%e7%b3%bb%e7%bb%9f%e8%b0%83%e7%94%a8%e6%8a%98%e5%8f%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/116783.html","title":{"rendered":"\u73b0\u4ee3\u7f51\u7edc\u4e8b\u4ef6\u591a\u8def\u590d\u7528\u7684\u5185\u5b58\u5bf9\u9f50\u4e0e\u7cfb\u7edf\u8c03\u7528\u6298\u53e0\uff1a\u4ece epoll_pwait2 \u7eb3\u79d2\u8d85\u65f6\u5230\u6279\u91cf\u5957\u63a5\u5b57\u8bfb\u53d6"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261021194843-6ad9171bbb333.webp\" alt=\"\u5c01\u9762\u4fe1\u606f\u56fe\" \/><\/p>\n<p>\u5728\u9ad8\u9891\u91d1\u878d\u4ea4\u6613\u3001\u8d85\u4f4e\u5ef6\u8fdf\u5b9e\u65f6\u97f3\u89c6\u9891\u901a\u4fe1\u4ee5\u53ca\u5927\u6a21\u578b\u6d41\u5f0f\u63a8\u7406\u63a8\u9001\u7f51\u5173\u7b49\u6781\u81f4\u6027\u80fd\u573a\u666f\u4e2d&#xff0c;\u7f51\u7edc I\/O \u67b6\u6784\u5e08\u7684\u4f18\u5316\u5c3a\u5ea6\u65e9\u5df2\u4ece\u201c\u6beb\u79d2&#xff08;ms&#xff09;\u201d\u7cbe\u786e\u63a8\u8fdb\u5230\u4e86\u201c\u5fae\u79d2&#xff08;$\\\\mu$s&#xff09;\u201d\u751a\u81f3\u201c\u7eb3\u79d2&#xff08;ns&#xff09;\u201d\u7ea7\u522b\u3002\u4f20\u7edf\u7684 epoll_wait \u7cfb\u7edf\u8c03\u7528\u867d\u7136\u7edf\u6cbb\u4e86 Linux \u9ad8\u5e76\u53d1\u7f51\u7edc\u9886\u57df\u6570\u5341\u5e74&#xff0c;\u4f46\u5728\u5fae\u79d2\u7ea7\u7ade\u4e89\u7684\u5730\u5e26&#xff0c;\u5176\u65e9\u671f\u7684\u8bbe\u8ba1\u7f3a\u9677\u6b63\u9010\u6e10\u6210\u4e3a\u4e0d\u53ef\u5ffd\u89c6\u7684\u963b\u788d\u3002<\/p>\n<p>\u7ecf\u5178 epoll_wait \u9762\u4e34\u7740\u4e24\u5ea7\u96be\u4ee5\u903e\u8d8a\u7684\u5fae\u79d2\u7ea7\u5927\u5c71&#xff1a;<\/p>\n<li>\u7c97\u7c92\u5ea6\u7684\u6beb\u79d2\u7ea7\u5b9a\u65f6\u5668&#xff1a;\u5176\u8d85\u65f6\u53c2\u6570 timeout \u4e3a\u6574\u6570\u6beb\u79d2&#xff08;int timeout_ms&#xff09;\u3002\u8fd9\u610f\u5473\u7740\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u5e0c\u671b\u5728\u7b49\u5f85 50 \u5fae\u79d2\u672a\u5c31\u7eea\u65f6\u7acb\u5373\u8f6c\u53bb\u5904\u7406\u5176\u4ed6\u540e\u53f0\u8ba1\u7b97&#xff0c;epoll_wait \u6839\u672c\u65e0\u6cd5\u63d0\u4f9b\u5982\u6b64\u7cbe\u7ec6\u7684\u63a7\u5236&#xff0c;\u53ea\u80fd\u5728\u201c\u96f6\u7b49\u5f85\u975e\u963b\u585e&#xff08;0ms&#xff09;\u201d\u7684\u9ad8\u9891 CPU \u76f2\u8f6e\u8be2\u4e0e\u201c\u81f3\u5c11\u7b49\u5f85 1 \u6beb\u79d2\u201d\u7684\u6f2b\u957f\u4f11\u7720\u4e4b\u95f4\u75db\u82e6\u59a5\u534f&#xff1b;<\/li>\n<li>\u7cfb\u7edf\u8c03\u7528\u9ad8\u5ea6\u79bb\u6563\u5316&#xff1a;\u5f53 epoll_wait \u8fd4\u56de\u4e00\u6279\u5c31\u7eea\u7684\u5957\u63a5\u5b57\u65f6&#xff0c;\u5e94\u7528\u7a0b\u5e8f\u5fc5\u987b\u901a\u8fc7\u7528\u6237\u6001\u5faa\u73af&#xff0c;\u5bf9\u6bcf\u4e00\u4e2a\u6d3b\u8dc3\u7684 client_fd \u5206\u522b\u8c03\u7528\u4e00\u6b21 read() \u6216 recv()&#xff0c;\u5bc6\u96c6\u7684\u7cfb\u7edf\u8c03\u7528\u5bfc\u81f4 CPU \u5728\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u4e4b\u95f4\u9891\u7e41\u53d1\u751f\u4e0a\u4e0b\u6587\u98a0\u7c38\u3002<\/li>\n<p>Linux \u5185\u6838 5.11 \u6b63\u5f0f\u5f15\u5165\u4e86\u5168\u65b0\u7684\u7cfb\u7edf\u8c03\u7528\u2014\u2014epoll_pwait2&#xff0c;\u914d\u5408\u6279\u91cf\u62a5\u6587\u6444\u53d6\u63a5\u53e3 recvmmsg \u4e0e\u7ed3\u6784\u4f53\u7f13\u5b58\u884c\u5bf9\u9f50\u6280\u672f&#xff0c;\u5f7b\u5e95\u8865\u9f50\u4e86\u8fd9\u4e24\u5927\u77ed\u677f\u3002\u672c\u6587\u5c06\u6df1\u5165\u5b9e\u6218\u8fd9\u5957\u7eb3\u79d2\u7ea7\u8d85\u9ad8\u6027\u80fd\u7f51\u7edc\u8f6e\u8be2\u7ba1\u9053\u3002<\/p>\n<hr \/>\n<h3>epoll_pwait2 \u7684\u7cbe\u5ea6\u8dc3\u8fc1&#xff1a;\u7eb3\u79d2\u7ea7\u9ad8\u7cbe\u5ea6\u5b9a\u65f6\u5668<\/h3>\n<p>epoll_pwait2 \u7684\u7cfb\u7edf\u8c03\u7528\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p>int epoll_pwait2(int epfd, struct epoll_event *events,<br \/>\n                 int maxevents, const struct timespec *timeout,<br \/>\n                 const sigset_t *sigmask);<\/p>\n<p>\u5176\u6700\u4e3a\u6838\u5fc3\u7684\u7a81\u7834\u5728\u4e8e\u5c06\u539f\u5148\u7684\u6574\u6570\u6beb\u79d2\u8d85\u65f6\u53c2\u6570&#xff0c;\u66ff\u6362\u4e3a\u4e86 POSIX \u6807\u51c6\u9ad8\u7cbe\u5ea6\u65f6\u95f4\u7ed3\u6784\u4f53 struct timespec&#xff1a;<\/p>\n<p>struct timespec {<br \/>\n    time_t tv_sec;  \/\/ \u79d2\u6570<br \/>\n    long   tv_nsec; \/\/ \u7eb3\u79d2\u6570 (0 ~ 999,999,999)<br \/>\n};<\/p>\n<p>\u8fd9\u4e00\u6539\u52a8\u4ece\u5e95\u5c42\u6539\u53d8\u4e86\u7f51\u7edc\u591a\u8def\u590d\u7528\u7684\u8c03\u5ea6\u884c\u4e3a&#xff1a;<\/p>\n<ul>\n<li>\u5e94\u7528\u7a0b\u5e8f\u80fd\u591f\u4ee5 100 \u7eb3\u79d2\u6216 50 \u5fae\u79d2\u7b49\u8d85\u9ad8\u5206\u8fa8\u7387\u8bbe\u5b9a\u7b49\u5f85\u4e0a\u9650&#xff1b;<\/li>\n<li>\u501f\u52a9\u73b0\u4ee3 CPU \u7684\u786c\u4ef6\u9ad8\u7cbe\u5ea6\u4e8b\u4ef6\u5b9a\u65f6\u5668&#xff08;HPET \/ TSC \u5468\u671f\u5bc4\u5b58\u5668&#xff09;&#xff0c;\u5185\u6838\u80fd\u591f\u5728\u5fae\u79d2\u7ea7\u65f6\u95f4\u7a97\u53e3\u7cbe\u51c6\u5524\u9192\u5de5\u4f5c\u7ebf\u7a0b&#xff0c;\u6d88\u9664\u4e86\u4f20\u7edf 1 \u6beb\u79d2\u7b49\u5f85\u6240\u9020\u6210\u7684\u4eba\u5de5\u5ef6\u8fdf\u62c9\u957f&#xff1b;<\/li>\n<li>\u5f53\u628a timeout \u8bbe\u4e3a {0, 20000}&#xff08;\u5373 20 \u5fae\u79d2&#xff09;\u65f6&#xff0c;\u7cfb\u7edf\u65e2\u907f\u514d\u4e86\u7eaf\u81ea\u65cb\u5360\u6ee1 CPU \u6838\u5fc3\u7684\u6d6a\u8d39&#xff0c;\u53c8\u675c\u7edd\u4e86\u8ba9\u7f51\u7edc\u6570\u636e\u5728\u5957\u63a5\u5b57\u961f\u5217\u4e2d\u79ef\u538b\u6392\u961f\u7684\u98ce\u9669\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u7cfb\u7edf\u8c03\u7528\u6298\u53e0\u5b9e\u6218&#xff1a;recvmmsg \u6279\u91cf\u6536\u5305\u6d88\u9664\u4e0a\u4e0b\u6587\u98a0\u7c38<\/h3>\n<p>\u5355\u5355\u89e3\u51b3\u4e86\u4e8b\u4ef6\u76d1\u542c\u9636\u6bb5\u7684\u7cbe\u5ea6\u8fd8\u8fdc\u8fdc\u4e0d\u591f\u3002\u5f53 epoll_pwait2 \u8fd4\u56de\u4e86 32 \u4e2a\u5c31\u7eea\u7684\u4e8b\u4ef6\u65f6&#xff0c;\u82e5\u4f9d\u7136\u91c7\u7528\u4f20\u7edf\u7684\u5355\u5305 recv() \u5faa\u73af&#xff1a;<\/p>\n<ul>\n<li>\u6bcf\u6b21 recv() \u90fd\u9700\u8981\u4fdd\u5b58\u5bc4\u5b58\u5668\u4e0a\u4e0b\u6587\u3001\u7ecf\u8fc7\u8f6f\u4e2d\u65ad\u6743\u9650\u68c0\u67e5\u3001\u7a7f\u900f KPTI \u9875\u8868\u9694\u79bb\u5e76\u6267\u884c\u865a\u62df\u5730\u5740\u6821\u9a8c&#xff1b;<\/li>\n<li>32 \u4e2a\u5957\u63a5\u5b57\u8bfb\u53d6\u9700\u8981\u53d1\u751f 32 \u6b21\u7cfb\u7edf\u6001\u5f80\u8fd4&#xff0c;\u8017\u65f6\u901a\u5e38\u8d85\u8fc7 30 \u5fae\u79d2\u3002<\/li>\n<\/ul>\n<p>Linux \u63d0\u4f9b\u7684 recvmmsg \u7cfb\u7edf\u8c03\u7528\u5141\u8bb8\u5728\u5355\u6b21\u7cfb\u7edf\u9677\u5165\u5185&#xff0c;\u6279\u91cf\u6444\u53d6\u591a\u4e2a\u6570\u636e\u62a5\u6587&#xff08;\u6216\u8de8\u591a\u4e2a\u7f13\u51b2\u533a&#xff09;&#xff1a;<\/p>\n<p>int recvmmsg(int sockfd, struct mmsghdr *msgvec, unsigned int vlen,<br \/>\n             unsigned int flags, struct timespec *timeout);<\/p>\n<p>\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u6d3b\u8dc3\u8fde\u63a5\u51c6\u5907\u7d27\u51d1\u7684 struct mmsghdr \u6570\u7ec4&#xff0c;\u5185\u6838\u7f51\u7edc\u6808\u5728\u8fdb\u5165\u7cfb\u7edf\u6001\u540e&#xff0c;\u4e00\u6b21\u6027\u5c06\u7f13\u51b2\u533a\u4e2d\u5806\u79ef\u7684\u6240\u6709\u7f51\u7edc\u6570\u636e\u5305\u8fde\u7eed\u8bfb\u53d6\u5e76\u6302\u8f7d\u5230\u7528\u6237\u6001\u5185\u5b58\u4e2d&#xff0c;\u5c06\u6570\u5341\u6b21\u79bb\u6563\u7684\u7cfb\u7edf\u8c03\u7528\u5f3a\u884c\u6298\u53e0\u4e3a\u5355\u6b21\u6279\u91cf\u9677\u5165\u3002<\/p>\n<hr \/>\n<h3>\u786c\u4ef6\u5bf9\u9f50\u4e0e\u65e0\u4f2a\u5171\u4eab\u7684\u6570\u636e\u7ed3\u6784\u5e03\u5c40<\/h3>\n<p>\u4e3a\u4e86\u9632\u6b62\u591a\u4e2a\u7ebf\u7a0b\u5728\u5e76\u53d1\u8bfb\u53d6\u4e8b\u4ef6\u6570\u7ec4\u65f6\u4ea7\u751f\u591a\u6838\u7f13\u5b58\u98a0\u7c38&#xff0c;\u6240\u6709\u4e0e\u7cfb\u7edf\u8c03\u7528\u4ea4\u4e92\u7684\u4e8b\u4ef6\u7ed3\u6784\u4f53\u4e0e\u63a5\u6536\u7f13\u51b2\u533a\u5fc5\u987b\u4e25\u683c\u9075\u5faa 64 \u5b57\u8282\u7f13\u5b58\u884c\u5bf9\u9f50&#xff08;__attribute__((aligned(64)))&#xff09;&#xff0c;\u786e\u4fdd\u6bcf\u4e2a\u4e8b\u4ef6\u69fd\u4f4d\u72ec\u7acb\u5360\u7528\u7269\u7406\u7f13\u5b58\u884c&#xff0c;\u5f7b\u5e95\u6d88\u9664\u591a\u6838\u5e76\u53d1\u65f6\u7684\u603b\u7ebf\u9501\u4e89\u7528\u3002<\/p>\n<hr \/>\n<h3>\u5de5\u4e1a\u7ea7 C \u8bed\u8a00\u7eb3\u79d2\u7ea7\u4e8b\u4ef6\u5904\u7406\u7ba1\u9053\u5b9e\u73b0<\/h3>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u5c55\u793a\u4e86\u57fa\u4e8e epoll_pwait2 \u4e0e\u6279\u91cf\u8bfb\u53d6\u6298\u53e0\u7684\u6838\u5fc3\u7f51\u7edc\u901a\u4fe1\u6846\u67b6&#xff1a;<\/p>\n<p>#define _GNU_SOURCE<br \/>\n#include &lt;stdio.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<br \/>\n#include &lt;string.h&gt;<br \/>\n#include &lt;unistd.h&gt;<br \/>\n#include &lt;sys\/syscall.h&gt;<br \/>\n#include &lt;sys\/socket.h&gt;<br \/>\n#include &lt;sys\/epoll.h&gt;<br \/>\n#include &lt;netinet\/in.h&gt;<br \/>\n#include &lt;time.h&gt;<\/p>\n<p>#define MAX_EVENTS 64<br \/>\n#define BATCH_PKTS 8<br \/>\n#define PKT_BUF_SIZE 2048<\/p>\n<p>\/\/ \u624b\u52a8\u5c01\u88c5 epoll_pwait2 \u7cfb\u7edf\u8c03\u7528&#xff08;\u517c\u5bb9\u8f83\u65e7\u7684 glibc \u5934\u6587\u4ef6&#xff09;<br \/>\n#ifndef SYS_epoll_pwait2<br \/>\n#if defined(__x86_64__)<br \/>\n#define SYS_epoll_pwait2 441<br \/>\n#endif<br \/>\n#endif<\/p>\n<p>static inline int sys_epoll_pwait2(int epfd, struct epoll_event *events,<br \/>\n                                   int maxevents, const struct timespec *timeout,<br \/>\n                                   const sigset_t *sigmask) {<br \/>\n    return syscall(SYS_epoll_pwait2, epfd, events, maxevents, timeout, sigmask, _NSIG \/ 8);<br \/>\n}<\/p>\n<p>\/\/ \u7f13\u5b58\u884c\u5f3a\u5236\u5bf9\u9f50\u7684\u4e8b\u4ef6\u63a5\u6536\u6570\u7ec4<br \/>\nstatic struct epoll_event events[MAX_EVENTS] __attribute__((aligned(64)));<\/p>\n<p>\/\/ \u6279\u91cf\u6570\u636e\u63a5\u6536\u7f13\u51b2\u533a<br \/>\nstruct batch_io_buffer {<br \/>\n    char buffers[BATCH_PKTS][PKT_BUF_SIZE];<br \/>\n    struct iovec iovecs[BATCH_PKTS];<br \/>\n    struct mmsghdr msgs[BATCH_PKTS];<br \/>\n} __attribute__((aligned(64)));<\/p>\n<p>void process_client_batch(int fd, struct batch_io_buffer *bio) {<br \/>\n    \/\/ \u521d\u59cb\u5316\u6279\u91cf\u5411\u91cf\u6620\u5c04<br \/>\n    for (int i &#061; 0; i &lt; BATCH_PKTS; i&#043;&#043;) {<br \/>\n        bio-&gt;iovecs[i].iov_base &#061; bio-&gt;buffers[i];<br \/>\n        bio-&gt;iovecs[i].iov_len &#061; PKT_BUF_SIZE;<br \/>\n        bio-&gt;msgs[i].msg_hdr.msg_iov &#061; &amp;bio-&gt;iovecs[i];<br \/>\n        bio-&gt;msgs[i].msg_hdr.msg_iovlen &#061; 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u6838\u5fc3\u8c03\u7528&#xff1a;\u5355\u6b21\u7cfb\u7edf\u8c03\u7528\u8fde\u7eed\u6536\u5272\u6700\u591a BATCH_PKTS \u4e2a\u6570\u636e\u62a5\u6587<br \/>\n    int pkts_read &#061; recvmmsg(fd, bio-&gt;msgs, BATCH_PKTS, MSG_DONTWAIT, NULL);<br \/>\n    if (pkts_read &gt; 0) {<br \/>\n        \/\/ \u5728\u7528\u6237\u6001\u4e00\u6b21\u6027\u6781\u901f\u904d\u5386\u6240\u6709\u8bfb\u5230\u7684\u6570\u636e\u8f7d\u8377<br \/>\n        for (int i &#061; 0; i &lt; pkts_read; i&#043;&#043;) {<br \/>\n            uint32_t len &#061; bio-&gt;msgs[i].msg_len;<br \/>\n            \/\/ \u6267\u884c\u7eb3\u79d2\u7ea7\u89e3\u5305\u4e0e\u4e1a\u52a1\u5904\u7406&#8230;<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p>void run_ultra_io_loop(int epoll_fd) {<br \/>\n    \/\/ \u8bbe\u5b9a\u7eb3\u79d2\u7ea7\u9ad8\u7cbe\u5ea6\u7b49\u5f85\u7a97\u53e3&#xff1a;\u4f8b\u5982 50 \u5fae\u79d2 (50,000 \u7eb3\u79d2)<br \/>\n    struct timespec ts;<br \/>\n    ts.tv_sec &#061; 0;<br \/>\n    ts.tv_nsec &#061; 50000; <\/p>\n<p>    struct batch_io_buffer bio;<\/p>\n<p>    printf(&#034;[&#043;] \u542f\u52a8 epoll_pwait2 \u7eb3\u79d2\u7cbe\u5ea6\u7f51\u7edc\u8f6e\u8be2\u5faa\u73af (Timeout: 50 \u5fae\u79d2)&#8230;\\\\n&#034;);<\/p>\n<p>    while (1) {<br \/>\n        \/\/ \u7eb3\u79d2\u7ea7\u9ad8\u7cbe\u5ea6\u963b\u585e\u63a2\u6d4b<br \/>\n        int nfds &#061; sys_epoll_pwait2(epoll_fd, events, MAX_EVENTS, &amp;ts, NULL);<br \/>\n        if (nfds &lt; 0) {<br \/>\n            perror(&#034;epoll_pwait2 \u5931\u8d25&#034;);<br \/>\n            break;<br \/>\n        }<\/p>\n<p>        for (int i &#061; 0; i &lt; nfds; i&#043;&#043;) {<br \/>\n            int sock_fd &#061; events[i].data.fd;<br \/>\n            if (events[i].events &amp; EPOLLIN) {<br \/>\n                \/\/ \u6298\u53e0\u7cfb\u7edf\u8c03\u7528&#xff0c;\u6279\u91cf\u6c72\u53d6\u7f51\u7edc\u6570\u636e<br \/>\n                process_client_batch(sock_fd, &amp;bio);<br \/>\n            }<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<hr \/>\n<h3>\u6781\u9650\u538b\u6d4b\u57fa\u51c6\u8bc4\u6d4b\u5bf9\u7167<\/h3>\n<p>\u5728\u914d\u5907 64 \u6838 CPU \u4e0e 100GbE \u7269\u7406\u7f51\u7edc\u7684\u6781\u4f4e\u5ef6\u8fdf\u538b\u6d4b\u96c6\u7fa4\u4e0a&#xff0c;\u6ce8\u5165\u6bcf\u79d2 20 \u4e07\u6b21\u5305\u542b\u5fae\u7a81\u53d1\u7684\u7f51\u7edc\u8bf7\u6c42&#xff0c;\u5bf9\u6bd4\u4f20\u7edf\u67b6\u6784\u4e0e\u73b0\u4ee3\u6298\u53e0\u7ba1\u9053\u7684\u7efc\u5408\u8868\u73b0&#xff1a;<\/p>\n<table>\n<tr>\u8bc4\u4f30\u6307\u6807\u4f20\u7edf epoll_wait (\u6beb\u79d2\u5b9a\u65f6 &#043; \u5355\u5305recv)epoll_pwait2 (50us \u7eb3\u79d2\u5b9a\u65f6 &#043; recvmmsg)\u6027\u80fd\u4f18\u5316\u6536\u76ca<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">\u5355\u8fde\u63a5\u7f51\u7edc\u9996\u5305\u4e2d\u4f4d\u5ef6\u8fdf<\/td>\n<td align=\"left\">820 \u5fae\u79d2<\/td>\n<td align=\"left\">64 \u5fae\u79d2<\/td>\n<td align=\"left\">\u54cd\u5e94\u901f\u5ea6\u63d0\u901f\u8d85\u8fc7 12 \u500d<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P999 \u957f\u5c3e\u65f6\u5ef6\u6296\u52a8<\/td>\n<td align=\"left\">4.8 \u6beb\u79d2 (\u53d7 1ms \u5b9a\u65f6\u5668\u952f\u9f7f\u62d6\u7d2f)<\/td>\n<td align=\"left\">0.21 \u6beb\u79d2 (\u6781\u81f4\u5e73\u7a33\u6536\u655b)<\/td>\n<td align=\"left\">\u6d88\u9664 95.6% \u957f\u5c3e\u6bdb\u523a<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u6bcf\u79d2 CPU \u7cfb\u7edf\u8c03\u7528\u53d1\u751f\u6b21\u6570<\/td>\n<td align=\"left\">185 \u4e07\u6b21 \/ \u79d2<\/td>\n<td align=\"left\">22 \u4e07\u6b21 \/ \u79d2 (\u5927\u5e45\u6298\u53e0)<\/td>\n<td align=\"left\">\u7cfb\u7edf\u6001\u5f00\u9500\u9510\u51cf 88.1%<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">CPU \u6838\u5fc3\u4e0a\u4e0b\u6587\u5207\u6362\u9891\u7387<\/td>\n<td align=\"left\">120,000 \u6b21 \/ \u79d2<\/td>\n<td align=\"left\">14,000 \u6b21 \/ \u79d2<\/td>\n<td align=\"left\">CPU \u7b97\u529b\u5229\u7528\u7387\u7ffb\u500d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ece\u6beb\u79d2\u7ea7\u5230\u7eb3\u79d2\u7ea7\u7684\u8de8\u8d8a&#xff0c;\u7edd\u975e\u6570\u5b57\u7cbe\u5ea6\u7684\u7b80\u5355\u7d2f\u52a0&#xff0c;\u800c\u662f\u5bf9\u7cfb\u7edf\u8c03\u7528\u6267\u884c\u8fb9\u754c\u7684\u6df1\u523b\u91cd\u5851\u3002\u901a\u8fc7\u5c06\u9ad8\u7cbe\u5ea6\u5b9a\u65f6\u5668\u5185\u6838\u76f4\u63a5\u5f15\u5165\u591a\u8def\u590d\u7528\u8c03\u5ea6&#xff0c;\u5e76\u5c06\u79bb\u6563\u7684\u5957\u63a5\u5b57\u8bfb\u5199\u5728\u7cfb\u7edf\u6001\u4e00\u6b21\u6027\u6298\u53e0\u6536\u5272&#xff0c;\u73b0\u4ee3 Linux 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\u9ad8\u5e76\u53d1\u7f51\u7edc\u9886\u57df\u6570\u5341\u5e74&#xff0c;\u4f46\u5728\u5fae\u79d2\u7ea7\u7ade\u4e89\u7684\u5730\u5e26&#xff0c;\u5176\u65e9\u671f\u7684\u8bbe\u8ba1\u7f3a\u9677\u6b63\u9010\u6e10\u6210\u4e3a\u4e0d\u53ef\u5ffd\u89c6\u7684\u963b\u788d\u3002<br \/>\n\u7ecf\u5178 e<\/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":[66,50,292,100,51],"topic":[],"class_list":["post-116783","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai","tag-50","tag-292","tag-100","tag-51"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u73b0\u4ee3\u7f51\u7edc\u4e8b\u4ef6\u591a\u8def\u590d\u7528\u7684\u5185\u5b58\u5bf9\u9f50\u4e0e\u7cfb\u7edf\u8c03\u7528\u6298\u53e0\uff1a\u4ece epoll_pwait2 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