{"id":57990,"date":"2023-10-21T06:14:17","date_gmt":"2023-10-20T22:14:17","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=57990"},"modified":"2023-10-21T06:14:17","modified_gmt":"2023-10-20T22:14:17","slug":"lybi","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/57990.html","title":{"rendered":"Linux\u5f02\u6b65IO"},"content":{"rendered":"

  Linux\u5f02\u6b65IO\u662f\u4e00\u79cd\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u66f4\u6709\u6548\u5730\u5b9e\u73b0\u7cfb\u7edfI\/O\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u7b49\u5f85I\/O\u64cd\u4f5c\u5b8c\u6210\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u963b\u585e\u7cfb\u7edf\u5176\u4ed6\u90e8\u5206\u7684\u60c5\u51b5\u4e0b\u5904\u7406I\/O\u64cd\u4f5c\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n

Linux\u5f02\u6b65IO\u7684\u4f18\u52bf<\/h2>\n

  Linux\u5f02\u6b65IO\u5177\u6709\u8bb8\u591a\u4f18\u52bf\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u7cfb\u7edf\u7684I\/O\u6027\u80fd\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u963b\u585e\u7cfb\u7edf\u5176\u4ed6\u90e8\u5206\u7684\u60c5\u51b5\u4e0b\u5904\u7406I\/O\u64cd\u4f5c\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u6b64\u5916\uff0cLinux\u5f02\u6b65IO\u8fd8\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u53d7\u5230\u7cfb\u7edf\u5176\u4ed6\u90e8\u5206\u7684\u5f71\u54cd\uff0c\u4e5f\u4e0d\u4f1a\u56e0\u4e3aI\/O\u64cd\u4f5c\u800c\u963b\u585e\u7cfb\u7edf\u5176\u4ed6\u90e8\u5206\u3002<\/p>\n

  Linux\u5f02\u6b65IO\u7684\u7f16\u7a0b\u6a21\u578b<\/h3>\n

  Linux\u5f02\u6b65IO\u7684\u7f16\u7a0b\u6a21\u578b\u662f\u4e00\u79cd\u975e\u963b\u585e\u7684\u6a21\u578b\uff0c\u5b83\u5141\u8bb8\u7a0b\u5e8f\u5458\u5728\u4e0d\u7b49\u5f85I\/O\u64cd\u4f5c\u5b8c\u6210\u7684\u60c5\u51b5\u4e0b\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u64cd\u4f5c\u3002\u5b83\u4f7f\u7528\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\uff0c\u5f53I\/O\u64cd\u4f5c\u5b8c\u6210\u65f6\uff0c\u7cfb\u7edf\u5c06\u8c03\u7528\u8be5\u56de\u8c03\u51fd\u6570\uff0c\u4ece\u800c\u4f7f\u7a0b\u5e8f\u5458\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5904\u7406I\/O\u64cd\u4f5c\u3002<\/p>\n

  Linux\u5f02\u6b65IO\u7684\u5b9e\u73b0<\/h3>\n

  Linux\u5f02\u6b65IO\u7684\u5b9e\u73b0\u4e3b\u8981\u4f9d\u8d56\u4e8eLinux\u7cfb\u7edf\u8c03\u7528\uff08system calls\uff09\u3002\u5b83\u53ef\u4ee5\u901a\u8fc7\u6807\u51c6\u7684Linux\u7cfb\u7edf\u8c03\u7528\uff0c\u5982open\u3001read\u3001write\u548cclose\u6765\u5b9e\u73b0\u5f02\u6b65I\/O\u64cd\u4f5c\u3002\u6b64\u5916\uff0cLinux\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9ad8\u7ea7\u7684\u7cfb\u7edf\u8c03\u7528\uff0c\u5982epoll\u548ckqueue\uff0c\u5b83\u4eec\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5b9e\u73b0\u5f02\u6b65I\/O\u64cd\u4f5c\u3002<\/p>\n

Linux\u5f02\u6b65IO\u7684\u5e94\u7528<\/h2>\n

  Linux\u5f02\u6b65IO\u7684\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6027\u80fd\u7684I\/O\u64cd\u4f5c\uff0c\u4f8b\u5982\u7f51\u7edcI\/O\u3001\u6587\u4ef6I\/O\u548c\u6570\u636e\u5e93I\/O\u7b49\u3002\u6b64\u5916\uff0cLinux\u5f02\u6b65IO\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u591a\u4efb\u52a1\u7f16\u7a0b\uff0c\u4f8b\u5982\u5b9e\u73b0\u591a\u7ebf\u7a0b\u5e94\u7528\u7a0b\u5e8f\u548c\u591a\u8fdb\u7a0b\u5e94\u7528\u7a0b\u5e8f\u7b49\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  Linux\u5f02\u6b65IO\u662f\u4e00\u79cd\u975e\u963b\u585e\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u66f4\u6709\u6548\u5730\u5b9e\u73b0\u7cfb\u7edfI\/O\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u7b49\u5f85I\/O\u64cd\u4f5c\u5b8c\u6210\u3002<\/strong>\u5b83\u5177\u6709\u591a\u79cd\u4f18\u52bf\uff0c\u5305\u62ec\u63d0\u9ad8\u7cfb\u7edf\u7684I\/O\u6027\u80fd\u3001\u7a33\u5b9a\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002Linux\u5f02\u6b65IO\u7684\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6027\u80fd\u7684I\/O\u64cd\u4f5c\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u591a\u4efb\u52a1\u7f16\u7a0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Linux\u5f02\u6b65IO\u662f\u4e00\u79cd\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u66f4\u6709\u6548\u5730\u5b9e\u73b0\u7cfb\u7edfI\/O\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u7b49\u5f85I\/O\u64cd\u4f5c\u5b8c\u6210\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u963b\u585e\u7cfb\u7edf\u5176\u4ed6\u90e8\u5206\u7684\u60c5\u51b5\u4e0b\u5904\u7406I\/O\u64cd\u4f5c\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[222],"class_list":["post-57990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ycio"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/57990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=57990"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/57990\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=57990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=57990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=57990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}