{"id":78073,"date":"2026-02-26T06:19:16","date_gmt":"2026-02-25T22:19:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78073.html"},"modified":"2026-02-26T06:19:16","modified_gmt":"2026-02-25T22:19:16","slug":"%e4%bb%8e%e8%99%9a%e6%8b%9f%e5%9c%b0%e5%9d%80%e5%88%b0%e7%89%a9%e7%90%86%e9%a1%b5%e6%a1%86%ef%bc%9alinux-%e9%a1%b5%e8%a1%a8%e4%b8%8e%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86%e5%85%a8%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78073.html","title":{"rendered":"\u4ece\u865a\u62df\u5730\u5740\u5230\u7269\u7406\u9875\u6846\uff1aLinux 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punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n             k<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n             <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5b50\u8fdb\u7a0b&#xff1a;&amp;k&#061;%p,k&#061;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>k<span class=\"token punctuation\">,<\/span>k<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n             <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u4f11\u77201\u79d2<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token keyword\">else<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token keyword\">int<\/span> n<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span><br \/>\n          <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n              <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7236\u8fdb\u7a0b&#xff1a;&amp;k&#061;%p,k&#061;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>k<span class=\"token punctuation\">,<\/span>k<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n              <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a; \u200b\u200b<img decoding=\"async\" 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\u2003\u2003\u53ef\u4ee5\u8bf4&#xff0c;mm_struct\u7ed3\u6784\u662f\u5bf9\u6574\u4e2a\u7528\u6237\u7a7a\u95f4\u7684\u63cf\u8ff0\u3002\u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u6709\u2f83\u2f30\u72ec\u2f74\u7684mm_struct&#xff0c;\u8fd9\u6837\u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u6709\u2f83\u2f30\u72ec\u2f74\u7684\u5730\u5740\u7a7a\u95f4\u624d\u80fd\u4e92\u4e0d\u2f32\u6270\u3002<\/p>\n<h2>\u4e09\u3001\u9875\u8868\u7684\u4f18\u52bf<\/h2>\n<ul>\n<li>\u63d0\u4f9b\u8fde\u7eed\u3001\u6709\u5e8f\u7684\u865a\u62df\u5730\u5740\u89c6\u56fe&#xff0c;\u5c4f\u853d\u7269\u7406\u5185\u5b58\u7684\u788e\u7247\u5316&#xff1a;\u5728\u628a\u6570\u636e\u4ee3\u7801\u52a0\u8f7d\u5230\u5185\u5b58\u7684\u65f6\u5019&#xff0c;\u5e76\u4e0d\u662f\u6709\u5e8f\u50a8\u5b58\u7684\u800c\u662f\u6df7\u4e71\u7684&#xff0c;\u4e5f\u6ca1\u6709\u4ec0\u4e48\u6808\u533a&#xff0c;\u5806\u533a\u7b49\u7b49\u8fd9\u4e9b\u533a\u5206\u3002\u800c\u4f7f\u7528\u9875\u8868\u505a\u4e00\u4e2a\u6620\u5c04\u5173\u7cfb\u5219\u53ef\u4ee5\u628a\u8fd9\u4e9b\u7a7a\u95f4\u5728\u865a\u62df\u5730\u5740\u4e0a\u53d8\u5f97\u6709\u5e8f&#xff0c;\u65b9\u4fbf\u7ba1\u7406\u3002<\/li>\n<li>\u4fdd\u62a4\u7269\u7406\u5185\u5b58&#xff1a;\u9875\u8868\u9664\u4e86\u6709\u4e00\u4e2a\u6620\u5c04\u7684\u4f5c\u7528&#xff0c;\u5b83\u8fd8\u63a7\u5236\u4e86\u6bcf\u4e2a\u5730\u5740\u7a7a\u95f4\u7684rwx\u8fd9\u4e9b\u6743\u9650&#xff0c;\u4ece\u800c\u8fbe\u5230\u4fdd\u62a4\u7269\u7406\u5185\u5b58\u7684\u76ee\u7684\u3002<\/li>\n<li>\u89e3\u8026\u5408&#xff1a;\u4e0d\u76f4\u63a5\u4ece\u865a\u62df\u5185\u5b58\u53bb\u4e0e\u7269\u7406\u5185\u5b58\u5339\u914d&#xff0c;\u800c\u662f\u5728\u6b64\u4e4b\u95f4\u52a0\u4e00\u4e2a\u9875\u8868&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u4f7f\u5f97\u865a\u62df\u5185\u5b58\u548c\u7269\u7406\u5185\u5b58\u4fdd\u6301\u81ea\u5df1\u7684\u72ec\u7acb\u6027&#xff0c;\u4ece\u800c\u8d77\u5230\u4e00\u4e2a\u89e3\u8026\u5408\u7684\u4f5c\u7528\u3002<\/li>\n<\/ul>\n<p>\u2003\u2003\u89e3\u8026\u5408\u7684\u610f\u4e49\u6781\u5176\u91cd\u8981\u3002\u5b83\u4f7f\u5f97\u7a0b\u5e8f\u6267\u884c\u53d8\u5f97\u66f4\u52a0\u7075\u6d3b\u3002\u6bd4\u5982\u5728\u521b\u5efa\u8fdb\u7a0b\u7684\u65f6\u5019&#xff0c;\u53ea\u9700\u8981\u628a\u865a\u62df\u5730\u5740\u7a7a\u95f4\u548c\u9875\u8868\u642d\u5efa\u597d&#xff0c;\u53ef\u4ee5\u5148\u4e0d\u628a\u5185\u5b58\u52a0\u8f7d\u5165\u5185\u5b58&#xff0c;\u7b49\u6267\u884c\u5230\u8be5\u7a0b\u5e8f\u5728\u67e5\u8be2\u9875\u8868\u65f6\u53d1\u73b0\u4ee3\u7801\u6570\u636e\u5e76\u6ca1\u6709\u52a0\u8f7d\u5230\u7269\u7406\u5185\u5b58&#xff0c;\u8fd9\u4e2a\u65f6\u5019\u518d\u6570\u636e\u52a0\u8f7d\u5165\u5185\u5b58\u3002\u8fd9\u5c31\u662f<font color=\"red\">\u7f3a\u9875\u4e2d\u65ad<\/font>\u3002 \u2003\u2003\u90a3\u4e48\u540c\u7406&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u7406\u89e3<font color=\"red\">\u6302\u8d77<\/font>\u64cd\u4f5c\u4e86&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u5185\u5b58\u4e0d\u8db3&#xff0c;\u80fd\u591f\u5b9e\u73b0\u628a\u963b\u585e\u72b6\u6001\u6216\u4f18\u5148\u7ea7\u4f4e\u7684\u8fdb\u7a0b\u7684\u4ee3\u7801\u6570\u636e\u4ece\u5185\u5b58\u4e2d\u91ca\u653e&#xff0c;\u7559\u51fa\u66f4\u591a\u7684\u5185\u5b58\u7ed9\u5176\u5b83\u8fdb\u7a0b\u3002\u5c31\u662f\u56e0\u4e3a\u53ea\u8981\u4fdd\u7559\u4e86\u865a\u62df\u5185\u5b58\u5730\u5740\u548c\u9875\u8868&#xff0c;\u90a3\u4e48\u5bf9\u5e94\u7684\u4ee3\u7801\u6570\u636e\u5c31\u80fd\u518d\u6b21\u52a0\u8f7d\u5165\u5185\u5b58\u3002<\/p>\n<h2>\u56db\u3001\u865a\u62df\u5185\u5b58\u533a\u57df\u5212\u5206<\/h2>\n<p>\u2003\u2003\u5728\u4e0a\u9762\u6211\u4eec\u63d0\u5230\u865a\u62df\u5730\u5740\u7a7a\u95f4\u662f\u4f7f\u7528mm_struct\u6765\u63cf\u8ff0\u7684&#xff0c;\u800cmm_struct\u628a\u865a\u62df\u5185\u5b58\u5212\u5206\u4e3a\u5404\u4e2a\u5206\u533a&#xff0c;\u5b83\u6574\u4f53\u8bb0\u5f55\u4e86\u5404\u4e2a\u5206\u533a\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u5730\u5740&#xff0c;\u6bcf\u4e2a\u5206\u533a\u7684\u5927\u5c0f\u4e0d\u662f\u56fa\u5b9a\u7684&#xff0c;\u4e0d\u540c\u7a0b\u5e8f\u5bf9\u5404\u5185\u5b58\u533a\u57df\u7684\u5927\u5c0f\u9700\u6c42\u5404\u4e0d\u76f8\u540c\u3002\u5982\u4e0b\u4e3amm_struct\u7684\u90e8\u5206\u6e90\u7801\u3002<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">mm_struct<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/*&#8230;*\/<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">vm_area_struct<\/span> <span class=\"token operator\">*<\/span>mmap<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u6307\u5411\u865a\u62df\u533a\u95f4(VMA)\u94fe\u8868 *\/<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">rb_root<\/span> mm_rb<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* red_black\u6811 *\/<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> task_size<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/*\u5177\u6709\u8be5\u7ed3\u6784\u4f53\u7684\u8fdb\u7a0b\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\u7684\u2f24\u2f29*\/<\/span><br \/>\n    <span class=\"token comment\">\/*&#8230;*\/<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u6808\u6bb5\u3001\u53c2\u6570\u6bb5\u53ca\u73af\u5883\u6bb5\u7684\u8d77\u59cb\u548c\u7ed3\u675f\u5730\u5740\u3002<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> start_code<span class=\"token punctuation\">,<\/span> end_code<span class=\"token punctuation\">,<\/span> start_data<span class=\"token punctuation\">,<\/span> end_data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> start_brk<span class=\"token punctuation\">,<\/span> brk<span class=\"token punctuation\">,<\/span> start_stack<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> arg_start<span class=\"token punctuation\">,<\/span> arg_end<span class=\"token punctuation\">,<\/span> env_start<span class=\"token punctuation\">,<\/span> env_end<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/*&#8230;*\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u2003\u2003\u90a3\u65e2\u7136\u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u6709\u2f83\u2f30\u72ec\u2f74\u7684mm_struct&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u80af\u5b9a\u662f\u8981\u5c06\u8fd9\u4e48\u591a\u8fdb\u7a0b\u7684mm_struct\u7ec4\u7ec7\u8d77\u6765\u7684&#xff01;\u865a\u62df\u7a7a\u95f4\u7684\u7ec4\u7ec7\u2f45\u5f0f\u6709\u4e24\u79cd&#xff1a;<\/p>\n<ul>\n<li>\u5f53\u865a\u62df\u533a\u8f83\u5c11\u65f6\u91c7\u53d6\u5355\u94fe\u8868&#xff0c;\u7531mmap\u6307\u9488\u6307\u5411\u8fd9\u4e2a\u94fe\u8868\u3002<\/li>\n<li>\u5f53\u865a\u62df\u533a\u95f4\u591a\u65f6\u91c7\u53d6\u7ea2\u2fca\u6811\u8fdb\u2f8f\u7ba1\u7406&#xff0c;\u7531mm_rb\u6307\u5411\u8fd9\u68f5\u6811\u3002<\/li>\n<\/ul>\n<p>\u2003\u2003linux\u5185\u6838\u4f7f\u2f64 vm_area_struct \u7ed3\u6784\u6765\u8868\u2f70\u2f00\u4e2a\u72ec\u2f74\u7684\u865a\u62df\u5185\u5b58\u533a\u57df(VMA)&#xff0c;\u7531\u4e8e\u6bcf\u4e2a\u4e0d\u540c\u8d28\u7684\u865a\u62df\u5185\u5b58\u533a\u57df\u529f\u80fd\u548c\u5185\u90e8\u673a\u5236\u90fd\u4e0d\u540c&#xff0c;\u56e0\u6b64\u2f00\u4e2a\u8fdb\u7a0b\u4f7f\u2f64\u591a\u4e2avm_area_struct\u7ed3\u6784\u6765\u5206\u522b\u8868\u2f70\u4e0d\u540c\u7c7b\u578b\u7684\u865a\u62df\u5185\u5b58\u533a\u57df\u3002\u4e0a\u2faf\u63d0\u5230\u7684\u4e24\u79cd\u7ec4\u7ec7\u2f45\u5f0f\u4f7f\u2f64\u7684\u5c31\u662fvm_area_struct\u7ed3\u6784\u6765\u8fde\u63a5\u5404\u4e2aVMA&#xff0c;\u4ee5\u4fbf\u8fdb\u7a0b\u5feb\u901f\u8bbf\u95ee\u3002<\/p>\n<p>\u56fe\u89e3&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221912-699f75609cca1.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221913-699f75610ba28.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u4e94\u3001\u7269\u7406\u7a7a\u95f4\u7406\u89e3<\/h2>\n<p>\u2003\u2003\u78c1\u76d8\u662f\u63094KB\u6570\u636e\u5757\u5b58\u53d6\u7684&#xff0c;\u53ef\u6267\u884c\u6587\u4ef6\u672c\u8d28\u5c31\u662f\u6587\u4ef6&#xff0c;\u5b58\u50a8\u5728\u78c1\u76d8\u4e0a\u3002\u800c\u7269\u7406\u5185\u5b58\u5e76\u4e0d\u662f\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u8fdb\u884c\u7ba1\u7406\u7684&#xff0c;\u800c\u662f\u4ee54KB\u7684\u5185\u5b58\u5757\u6765\u7ba1\u7406&#xff08;\u8981\u4e0e\u78c1\u76d8\u7b49\u5916\u8bbe\u7edf\u4e00&#xff09;\u3002\u6240\u4ee5\u5185\u5b58\u548c\u78c1\u76d8\u7684\u6570\u636e\u662f\u4ee54KB\u4e3a\u5355\u4f4d\u8fdb\u884c\u4ea4\u4e92\u7684&#xff0c;\u8fd9\u4e2a4KB\u7a7a\u95f4\u79f0\u4e3a\u9875\u6846\u6216\u9875\u5e27&#xff08;\u8bb0\u4f4f\u8fd9\u4e2a\u6982\u5ff5&#xff0c;\u540e\u6587\u90fd\u7528\u9875\u6846\u6765\u63cf\u8ff0&#xff09;\u3002 \u5173\u4e8e\u78c1\u76d8\u5230\u7cfb\u7edf\u7684\u539f\u7406\u5b66\u4e60\u94fe\u63a5&#xff1a;https:\/\/blog.csdn.net\/2302_80105876\/article\/details\/157979876?spm&#061;1001.2014.3001.5501<\/p>\n<p>\u800c\u5982\u679c\u5185\u5b58\u7a7a\u95f4\u662f4GB&#xff0c;\u90a3\u4e48\u5c31\u9700\u8981\u5212\u5206<font color=\"orange\">4GB\/4KB&#061;1,048,576<\/font>\u4e2a\u6570\u636e\u5757\u3002<\/p>\n<ul>\n<li>\u6ce8\u610f&#xff1a;\u5185\u5b58\u6761\u662f\u4e00\u4e2a\u6574\u4f53\u4e0d\u662f\u4ec0\u4e48\u5c0f\u5757\u5212\u5206&#xff0c;\u8fd9\u91cc\u8bf4\u7684\u6570\u636e\u5757\u662f\u7cfb\u7edf\u5c42\u9762\u7684\u4e00\u4e2a\u903b\u8f91\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<p><font color=\"blue\">\u2003\u2003\u90a3\u4e48\u600e\u4e48\u77e5\u9053\u90a3\u4e9b\u5185\u5b58\u6ca1\u6709\u88ab\u5360\u7528&#xff1f;\u6709\u591a\u5c11\u7684\u5185\u5b58\u5757&#xff1f;\u90a3\u4e9b\u4e0d\u80fd\u88ab\u5237\u65b0\u5230\u78c1\u76d8&#xff1f;\u90a3\u4e9b\u51c6\u5907\u91ca\u653e\u4e86&#xff1f;\u90a3\u4e9b\u662f\u5171\u4eab\u5185\u5b58&#xff1f;<\/font> \u2003\u2003\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5bf9\u5185\u5b58&#xff08;\u9875\u6846&#xff09;\u6709\u4e00\u5957\u7ba1\u7406\u65b9\u6cd5&#xff0c;\u9700\u8981\u5c06\u5b83\u8fdb\u884c\u63cf\u8ff0\u548c\u7ec4\u7ec7&#xff0c;\u8fd9\u5c31\u662fstruct page&#xff0c;\u7528\u6765\u7ba1\u7406\u4e00\u4e2a\u9875\u6846&#xff0c;\u90a3\u4e48\u7ba1\u7406\u6574\u4e2a\u5185\u5b58\u5c31\u9700\u8981\u4e00\u4e2astruct page\u6570\u7ec4&#xff0c;\u5373struct page mem[1048576]\u3002\u5bf9\u5185\u5b58\u7684\u589e\u5220\u6539\u67e5&#xff0c;\u672c\u8d28\u5c31\u662f\u5bf9mem\u6570\u7ec4\u7684\u589e\u5220\u6539\u67e5\u3002 \u2003\u2003\u5185\u5b58\u662f\u8fde\u7eed\u7684&#xff0c;\u53ea\u8981\u77e5\u9053page\u7684\u4e0b\u6807\u5c31\u80fd\u67e5\u5230\u9875\u6846\u8d77\u59cb\u7269\u7406\u5730\u5740\u4e86&#xff0c;<font color=\"orange\">\u7269\u7406\u5730\u5740&#061;\u4e0b\u6807x4KB<\/font>\u3002\u6240\u4ee5page\u91cc\u9762\u5c31\u4e0d\u7528\u5b58\u50a8\u8d77\u59cb\u7269\u7406\u5730\u5740\u3002<font color=\"blue\">\u5982\u4f55\u901a\u8fc7\u7269\u7406\u5730\u5740\u77e5\u9053\u5b83\u662f\u90a3\u4e2apage&#xff1f;<\/font><font color=\"orange\">\u7269\u7406\u5730\u5740\/4KB&#061;page\u6570\u7ec4\u4e0b\u6807<\/font>\u3002<\/p>\n<ul>\n<li>\u6ce81&#xff1a;page\u5bf9\u9875\u6846\u7684\u7ba1\u7406&#xff0c;\u4e3b\u8981\u662f\u8bbe\u7f6e\u4e00\u4e9b\u6807\u8bb0\u4f4d\u3002<\/li>\n<li>\u6ce82&#xff1a;page\u672c\u8eab\u4e5f\u8981\u5360\u7528\u5185\u5b58&#xff0c;\u6240\u4ee5\u8fd9\u4e2a\u7ed3\u6784\u4f53\u5fc5\u987b\u7279\u522b\u5c0f\u3002<\/li>\n<li>\u6ce83&#xff1a;\u7269\u7406\u5185\u5b58\u662f\u4ee54KB\u4e3a\u5355\u4f4d\u7684&#xff0c;\u5c3d\u7ba1\u4f60\u53ea\u7533\u8bf7\u4e86size\u4e2a\u5b57\u8282\u5b83\u4f1a\u7ed94KB&#xff08;\u6216\u5b83\u7684\u6574\u6570\u500d&#xff09;\u7684\u7a7a\u95f4&#xff0c;\u53ea\u4e0d\u8fc7\u53ea\u8ba9\u4f60\u7528\u4f60\u7533\u8bf7\u7684\u90a3size\u4e2a\u5b57\u8282\u3002\u540c\u6837\u6bd4\u5982\u5b50\u8fdb\u7a0b\u770b\u4f3c\u53ea\u662f\u6539\u53d8\u4e00\u4e2a4\u5b57\u8282\u7684\u53d8\u91cf&#xff0c;\u4f46\u5b83\u5199\u65f6\u62f7\u8d1d\u7684\u662f\u6574\u4e2a4KB\u7684\u7a7a\u95f4\u3002\u5171\u4eab\u5185\u5b58\u53ea\u80fd\u4ee54KB\u7684\u6574\u6570\u500d\u7533\u8bf7\u7a7a\u95f4\u7684\u539f\u56e0\u3002<\/li>\n<\/ul>\n<p><font color=\"blue\">\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u505a&#xff1f;<\/font>\u8fd9\u662f\u5728\u8d44\u6e90\u6d6a\u8d39\u548c\u6548\u7387\u4e4b\u95f4\u627e\u5e73\u8861&#xff0c;\u6bd4\u5982STL\u5e93\u7684\u6269\u5bb9\u673a\u5236\u3002<\/p>\n<p><font color=\"blue\">\u4ece\u78c1\u76d8\u8f7d\u5165\u6570\u636e\u672c\u8d28\u662f\u4ec0\u4e48&#xff1f;<\/font>\u5728page\u6570\u7ec4\u4e2d\u68c0\u67e5\u6807\u5fd7\u4f4d\u627e\u5230\u6ca1\u6709\u88ab\u5360\u7528\u7684page&#xff0c;\u7136\u540e\u628a\u78c1\u76d8\u6570\u636e\u8f7d\u5165\u5230\u8be5page&#xff0c;\u7136\u540e\u628a\u76f8\u5e94\u6807\u8bc6\u4f4d\u8fdb\u884c\u8bbe\u7f6e&#xff0c;\u8868\u793a\u8be5page\u5df2\u7ecf\u88ab\u5360\u7528\u3002<\/p>\n<p>struct page\u6e90\u7801&#xff08;\u53d6\u81eaLinux-2.6.18\u7248\u672c&#xff09;&#xff1a;<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">page<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> flags<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Atomic flags, some possibly<br \/>\n * updated asynchronously *\/<\/span><br \/>\n<span class=\"token class-name\">atomic_t<\/span> _count<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Usage count, see below. *\/<\/span><br \/>\n<span class=\"token class-name\">atomic_t<\/span> _mapcount<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Count of ptes mapped in mms,<br \/>\n * to show when page is mapped<br \/>\n * &amp; limit reverse map searches.<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">union<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> private<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Mapping-private opaque data:<br \/>\n  * usually used for buffer_heads<br \/>\n * if PagePrivate set; used for<br \/>\n * swp_entry_t if PageSwapCache;<br \/>\n * indicates order in the buddy<br \/>\n * system if PG_buddy is set.<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">address_space<\/span> <span class=\"token operator\">*<\/span>mapping<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* If low bit clear, points to<br \/>\n * inode address_space, or NULL.<br \/>\n * If page mapped as anonymous<br \/>\n * memory, low bit is set, and<br \/>\n * it points to anon_vma object:<br \/>\n * see PAGE_MAPPING_ANON below.<br \/>\n *\/<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">if<\/span> <span class=\"token expression\">NR_CPUS <span class=\"token operator\">&gt;&#061;<\/span> CONFIG_SPLIT_PTLOCK_CPUS<\/span><\/span><br \/>\n    <span class=\"token class-name\">spinlock_t<\/span> ptl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span><\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">pgoff_t<\/span> index<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Our offset within mapping. *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">list_head<\/span> lru<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Pageout list, eg. active_list<br \/>\n * protected by zone-&gt;lru_lock !<br \/>\n *\/<\/span><br \/>\n<span class=\"token comment\">\/*<br \/>\n * On machines where all RAM is mapped into kernel address space,<br \/>\n * we can simply calculate the virtual address. On machines with<br \/>\n * highmem some memory is mapped into kernel virtual memory<br \/>\n * dynamically, so we need a place to store that address.<br \/>\n * Note that this field could be 16 bits on x86 &#8230; \ud83d\ude09<br \/>\n *<br \/>\n * Architectures with slow multiplication can define<br \/>\n * WANT_PAGE_VIRTUAL in asm\/page.h<br \/>\n *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">if<\/span> <span class=\"token expression\"><span class=\"token function\">defined<\/span><span class=\"token punctuation\">(<\/span>WANT_PAGE_VIRTUAL<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>virtual<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/* Kernel virtual address (NULL if<br \/>\n   not kmapped, ie. highmem) *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span> <span class=\"token comment\">\/* WANT_PAGE_VIRTUAL *\/<\/span><\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>page\u4e2d\u6bd4\u8f83\u91cd\u8981\u7684\u53c2\u6570<\/p>\n<ul>\n<li>flags &#xff1a;\u2f64\u6765\u5b58\u653e\u2eda\u7684\u72b6\u6001\u3002\u8fd9\u4e9b\u72b6\u6001\u5305\u62ec\u2eda\u662f\u4e0d\u662f\u810f\u7684&#xff0c;\u662f\u4e0d\u662f\u88ab\u9501\u5b9a\u5728\u5185\u5b58\u4e2d\u7b49\u3002flag\u7684\u6bcf\u2f00\u4f4d\u5355\u72ec\u8868\u793a\u2f00\u79cd\u72b6\u6001&#xff0c;\u6240\u4ee5\u5b83\u2f84\u5c11\u53ef\u4ee5\u540c\u65f6\u8868\u2f70\u51fa32\u79cd\u4e0d\u540c\u7684\u72b6\u6001\u3002\u8fd9\u4e9b\u6807\u5fd7\u5b9a\u4e49\u5728&lt;linux\/page-flags.h&gt;\u4e2d\u3002\u5176\u4e2d\u2f00\u4e9b\u2f50\u7279\u4f4d\u2fae\u5e38\u91cd\u8981&#xff0c;\u5982PG_locked\u2f64\u4e8e\u6307\u5b9a\u2eda\u662f\u5426\u9501\u5b9a&#xff0c;PG_uptodate\u2f64\u4e8e\u8868\u793a\u2eda\u7684\u6570\u636e\u5df2\u7ecf\u4ece\u5757\u8bbe\u5907\u8bfb\u53d6\u5e76\u4e14\u6ca1\u6709\u51fa\u73b0\u9519\u8bef\u3002<\/li>\n<li>_mapcount &#xff1a;\u8868\u793a\u5728\u2eda\u8868\u4e2d\u6709\u591a\u5c11\u9879\u6307\u5411\u8be5\u2eda&#xff08;\u8ba1\u6570\u5668&#xff09;&#xff0c;\u4e5f\u5c31\u662f\u8fd9\u2f00\u2eda\u88ab\u5f15\u2f64\u4e86\u591a\u5c11\u6b21\u3002\u5f53\u8ba1\u6570\u503c\u53d8\u4e3a-1\u65f6&#xff0c;\u5c31\u8bf4\u660e\u5f53\u524d\u5185\u6838\u5e76\u6ca1\u6709\u5f15\u2f64\u8fd9\u2f00\u2eda&#xff0c;\u4e8e\u662f\u5728\u65b0\u7684\u5206\u914d\u4e2d\u5c31\u53ef\u4ee5\u4f7f\u2f64\u5b83\u3002<\/li>\n<li>virtual &#xff1a;\u662f\u2eda\u7684\u865a\u62df\u5730\u5740\u3002\u901a\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u5b83\u5c31\u662f\u2eda\u5728\u865a\u62df\u5185\u5b58\u4e2d\u7684\u5730\u5740\u3002\u6709\u4e9b\u5185\u5b58&#xff08;\u5373\u6240\u8c13\u7684\u2fbc\u7aef\u5185\u5b58&#xff09;\u5e76\u4e0d\u6c38\u4e45\u5730\u6620\u5c04\u5230\u5185\u6838\u5730\u5740\u7a7a\u95f4\u4e0a\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b&#xff0c;\u8fd9\u4e2a\u57df\u7684\u503c\u4e3aNULL&#xff0c;\u9700\u8981\u7684\u65f6\u5019&#xff0c;\u5fc5\u987b\u52a8\u6001\u5730\u6620\u5c04\u8fd9\u4e9b\u2eda\u3002<\/li>\n<\/ul>\n<p>\u2003\u2003\u8981\u6ce8\u610f\u7684\u662f struct page \u4e0e\u7269\u7406\u2eda\u76f8\u5173&#xff0c;\u2f7d\u5e76\u2fae\u4e0e\u865a\u62df\u2eda\u76f8\u5173\u3002\u2f7d\u7cfb\u7edf\u4e2d\u7684\u6bcf\u4e2a\u7269\u7406\u2eda\u90fd\u8981\u5206\u914d\u2f00\u4e2a\u8fd9\u6837\u7684\u7ed3\u6784\u4f53&#xff0c;\u5047\u8bbe struct page \u536040\u4e2a\u5b57\u8282\u7684\u5185\u5b58\u3001\u7cfb\u7edf\u7684\u7269\u7406\u2eda\u4e3a 4KB \u2f24\u2f29\u3001\u7cfb\u7edf\u6709 4GB \u7269\u7406\u5185\u5b58\u3002\u8fd9\u4e48\u591a\u2eda\u2faf\u7684page\u7ed3\u6784\u4f53\u6d88\u8017\u7684\u5185\u5b58\u53ea\u4e0d\u8fc740MB &#xff0c;\u76f8\u5bf9\u2f7d\u2f94&#xff0c;\u4ec5\u662f\u5f88\u2f29\u7684\u2f00\u90e8\u5206\u7f62\u4e86\u3002\u56e0\u6b64&#xff0c;\u8981\u7ba1\u7406\u7cfb\u7edf\u4e2d\u8fd9\u4e48\u591a\u7269\u7406\u2eda\u2faf&#xff0c;\u8fd9\u4e2a\u4ee3\u4ef7\u5e76\u4e0d\u7b97\u592a\u2f24\u3002 \u2003\u2003\u8981\u77e5\u9053\u7684\u662f&#xff0c;\u2eda\u7684\u2f24\u2f29\u5bf9\u4e8e\u5185\u5b58\u5229\u2f64\u548c\u7cfb\u7edf\u5f00\u9500\u6765\u8bf4\u2fae\u5e38\u91cd\u8981&#xff0c;\u2eda\u592a\u2f24&#xff0c;\u2eda\u5185\u5fc5\u7136\u4f1a\u5269\u4f59\u8f83\u2f24\u4e0d\u80fd\u5229\u2f64\u7684\u7a7a\u95f4&#xff08;\u2eda\u5185\u788e\u2f5a&#xff09;\u3002\u2eda\u592a\u2f29&#xff0c;\u867d\u7136\u53ef\u4ee5\u51cf\u2f29\u2eda\u5185\u788e\u2f5a\u7684\u2f24\u2f29&#xff0c;\u4f46\u662f\u2eda\u592a\u591a&#xff0c;\u4f1a\u4f7f\u5f97\u2eda\u8868\u592a\u2ed3\u2f7d\u5360\u2f64\u5185\u5b58&#xff0c;\u540c\u65f6\u7cfb\u7edf\u9891\u7e41\u5730\u8fdb\u2f8f\u2eda\u8f6c\u5316&#xff0c;\u52a0\u91cd\u7cfb\u7edf\u5f00\u9500\u3002\u56e0\u6b64&#xff0c;\u2eda\u7684\u2f24\u2f29\u5e94\u8be5\u9002\u4e2d&#xff0c;\u901a\u5e38\u4e3a 512B &#8211; 8KB &#xff0c;Windows\/Linux\u7cfb\u7edf\u7684\u2eda\u6846\u2f24\u2f29\u4e3a4KB\u3002<\/p>\n<p>\u6ce8&#xff1a;\u5185\u5b58\u7684\u7533\u8bf7\u901a\u5e38\u7531\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u53d1\u8d77\u3002\u4f8b\u5982&#xff0c;\u6253\u5f00\u6587\u4ef6\u3001\u7533\u8bf7\u5730\u5740\u7a7a\u95f4\u7b49\u64cd\u4f5c\u90fd\u9700\u8981\u6d88\u8017\u5185\u5b58\u8d44\u6e90\u3002<\/p>\n<p>\u5173\u4e8e\u6587\u4ef6\u7f13\u51b2\u533a&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221913-699f7561af7ed.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u2003\u2003\u8fd9\u4e2aslots\u5b58\u50a8\u7684\u5c31\u662fpage\u7684\u5730\u5740&#xff0c;<font color=\"orange\">page\u5730\u5740\/4KB&#061;page\u6240\u5728\u7684\u6570\u7ec4\u4e0b\u6807<\/font>&#xff0c;<font color=\"orange\">\u6570\u7ec4\u4e0b\u6807x4KB&#061;\u7269\u7406\u5730\u5740<\/font>\u3002\u6240\u4ee5\u6587\u4ef6\u7f13\u51b2\u533a\u672c\u8d28\u662f\u5185\u5b58\u4e0a\u7684\u9875\u6846\u3002 \u2003\u2003\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u7684page\u662f\u6811\u5f62\u7ed3\u6784&#xff0c;\u5176\u5b9epage\u4e0d\u6b62\u662f\u6570\u7ec4\u7ed3\u6784&#xff0c;\u4e3a\u4e86\u65b9\u4fbf\u7ba1\u7406\u5b83\u5728\u4e0d\u540c\u6a21\u5757\u91cc\u88ab\u4e0d\u540c\u7684\u7ed3\u6784\u5b58\u50a8\u3002<\/p>\n<p>\u5173\u4e8e\u5171\u4eab\u5185\u5b58&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221914-699f75626c717.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6240\u4ee5\u5171\u4eab\u5185\u5b58\u7684\u672c\u8d28\u662f\u4e00\u5757\u6587\u4ef6\u7f13\u51b2\u533a\u3002<\/p>\n<h2>\u516d\u3001\u9875\u8868\u6620\u5c04\u539f\u7406<\/h2>\n<p>\u865a\u62df\u5730\u5740\u662f\u9762\u5411\u7a0b\u5e8f\u5458\u7684&#xff0c;\u662f\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u5bf9\u7269\u7406\u5185\u5b58\u7684\u6620\u5c04\u3002<\/p>\n<ul>\n<li>\u6ce8\u610f&#xff1a;\u9875\u8868\u672c\u8eab\u4e5f\u8981\u5360\u5185\u5b58\u7a7a\u95f4&#xff01;&#xff01;<\/li>\n<\/ul>\n<p>\u2003\u2003\u5047\u8bbe\u6211\u4eec\u7528\u9875\u8868\u7ed9\u865a\u62df\u5730\u5740\u4e0e\u7269\u7406\u5730\u5740\u4e00\u5bf9\u4e00\u7684\u76f4\u63a5\u6620\u5c04&#xff0c;\u5982\u679c\u662f64\u4f4d\u673a\u5668&#xff0c;\u90a3\u4e48\u5730\u5740\u8981\u75288\u5b57\u8282\u6765\u50a8\u5b58&#xff0c;\u6574\u4e2a\u5185\u5b58\u67094GB&#xff0c;\u5b58\u50a8\u6240\u6709\u6620\u5c04\u5c31\u9700\u8981<font color=\"orange\">4GBx8&#061;32GB<\/font>\u7684\u7a7a\u95f4\u6765\u5b58\u50a8\u9875\u8868&#xff0c;\u8fd9\u5c31\u592a\u79bb\u8c31&#xff1f;\u5f88\u660e\u663e\u4e0d\u5408\u7406&#xff01;<\/p>\n<p>\u9875\u8868\u7684\u8bbe\u8ba1<\/p>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u8bb2\u89e3&#xff0c;\u8fd9\u91cc\u6211\u4eec\u4f7f\u752832\u4e3a\u673a\u5668\u4e3a\u4f8b&#xff1a;<\/p>\n<ul>\n<li>\u865a\u62df\u5730\u5740 <font color=\"blue\">00000000 00<\/font> <font color=\"green\">000000 00<\/font><font color=\"red\">000000 00000000<\/font><\/li>\n<\/ul>\n<p>\u628a\u5b83\u5212\u5206\u4e3a3\u90e8\u5206&#xff0c;\u5206\u522b\u662f10bite\u300110bite\u300112bite\u3002<\/p>\n<p>\u4e24\u4e2a\u9875\u7ed3\u6784&#xff1a;<\/p>\n<ul>\n<li>\u9875\u76ee\u5f55&#xff08;\u6570\u7ec4\u7ed3\u6784&#xff0c;\u53ea\u6709\u4e00\u4e2a&#xff09;&#xff1a;\u5b58\u50a8\u4e00\u7ea7\u9875\u8868\u5730\u5740\u3002<\/li>\n<li>\u9875\u8868&#xff08;\u6570\u7ec4\u7ed3\u6784&#xff0c;\u67091024\u4e2a&#xff09;&#xff1a;\u5b58\u50a8\u76ee\u6807\u9875\u6846\u7684\u8d77\u59cb\u5730\u5740\u3002&#xff08;\u9875\u8868\u53ef\u4ee5\u6709\u5206\u591a\u7ea7&#xff0c;\u8fd9\u91cc\u53ea\u8bb2\u6ca1\u6709\u5206\u7ea7\u7684&#xff09;<\/li>\n<\/ul>\n<p>\u865a\u62df\u5730\u5740\u600e\u4e48\u67e5\u7269\u7406\u5730\u5740&#xff1a;<\/p>\n<ul>\n<li>\u524d10\u4e2abite\u4f4d&#xff1a;\u4f5c\u4e3a\u9875\u76ee\u5f55\u6570\u7ec4\u4e0b\u6807\u7684\u7d22\u5f15&#xff0c;\u627e\u5230\u9875\u8868\u7684\u5730\u5740\u3002<\/li>\n<li>\u4e2d\u95f410\u4e2abite\u4f4d&#xff1a;\u4f5c\u4e3a\u9875\u8868\u6570\u7ec4\u7684\u4e0b\u6807\u7d22\u5f15&#xff0c;\u627e\u5230\u9875\u6846\u5730\u5740&#xff08;\u8fd9\u91cc\u53ea\u5b58\u5b83\u7684\u524d20\u4e2abite\u4f4d&#xff09;\u3002<\/li>\n<li>\u6700\u540e12\u4e2abite\u4f4d&#xff1a;\u4f5c\u4e3a\u9875\u6846\u5185\u504f\u79fb\u91cf&#xff0c;\u627e\u5230\u76ee\u6807\u5b57\u8282\u7684\u7269\u7406\u5730\u5740\u3002<\/li>\n<\/ul>\n<p>\u56fe\u89e3&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221914-699f7562a55fc.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<ul>\n<li>\u6ce8\u610f&#xff1a;\u9875\u8868\u4e2d\u4e00\u4e2a\u5143\u7d20\u768432bite\u4f4d\u53ea\u6709\u524d20\u4f4d\u662f\u76ee\u6807\u7269\u7406\u5730\u5740&#xff0c;<font color=\"blue\">\u5728\u627e\u7269\u7406\u9875\u65f6&#xff0c;\u4f4620\u4e2abite\u4f4d\u53c8\u600e\u4e48\u80fd\u627e\u5230\u7269\u7406\u5730\u5740\u5462&#xff1f;<\/font>\u5b83\u628a\u540e\u9762\u768412\u4f4d\u75280\u586b\u5145\u53bb\u627e\u7269\u7406\u9875\u8d77\u59cb\u5730\u5740\u3002\u800c\u9875\u8868\u7684\u5143\u7d20\u7684\u540e12\u4f4d\u4e5f\u6ca1\u95f2\u7740&#xff0c;\u5b83\u662f\u7528\u6765\u505a\u8bbf\u95ee\u7ba1\u7406&#xff0c;\u6bd4\u5982\u9274\u6743&#xff0c;\u68c0\u6d4b\u5730\u5740\u5408\u6cd5\u6027\u7b49\u7b49\u3002<\/li>\n<\/ul>\n<p>\u9875\u76ee\u5f55 \u2192 \u5b58\u7684\u662f\u9875\u8868\u7684\u7269\u7406\u5730\u5740 \u9875\u8868 \u2192 \u5b58\u7684\u662f\u76ee\u6807\u7269\u7406\u9875\u6846\u7684\u5730\u5740 <font color=\"orange\">\u9875\u8868\u9879\u4e2d\u7684\u5730\u5740 &#043; 12\u4f4d\u504f\u79fb &#061; \u6700\u7ec8\u7269\u7406\u5730\u5740<\/font> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221914-699f7562e7ac8.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u2003\u2003\u73b0\u5728\u53ef\u4ee5\u5728\u6765\u770b\u770b\u6574\u4e2a\u9875\u7ed3\u6784\u5360\u591a\u5c11\u7a7a\u95f4&#xff0c;<font color=\"orange\">\u4e00\u4e2a\u76ee\u5f55\u9875\u5360\u7684\u5927\u5c0f&#061;1024&#215;4\u5b57\u8282<\/font>&#xff0c;<font color=\"orange\">\u4e00\u4e2a\u9875\u8868\u5927\u5c0f&#061;1024&#215;4\u5b57\u8282<\/font>\u3002<font color=\"orange\">\u6574\u4e2a\u9875\u7ed3\u6784\u5927\u5c0f&#061;4096&#043;4096&#215;1024\u4e2a\u9875&#061;4,198,400\u5b57\u8282<\/font>&#xff0c;\u53734MB\u3002 \u2003\u20034MB\u5df2\u7ecf\u5f88\u4f4e\u4e86&#xff0c;\u4f46\u5b9e\u9645\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u4e0d\u53ef\u80fd\u628a\u6574\u4e2a\u9875\u8868\u7ed3\u6784\u5b8c\u5168\u586b\u5145&#xff0c;\u90fd\u662f\u7528\u5230\u624d\u521b\u5efa&#xff0c;\u4e0d\u7528\u5c31\u9500\u6bc1&#xff0c;\u5360\u7528\u7a7a\u95f4\u8fdc\u8fdc\u4f4e\u4e8e4MB&#xff0c;\u8fd9\u4e5f\u662f20\u591aGB\u7684\u5185\u5b58\u80fd\u8fd0\u884c\u4e0a\u767eGB\u6e38\u620f\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/p>\n<ul>\n<li>\u6ce8&#xff1a;\u5355\u7ea7\u2eda\u8868\u5bf9\u8fde\u7eed\u5185\u5b58\u8981\u6c42\u2fbc&#xff0c;\u4e8e\u662f\u5f15\u2f0a\u4e86\u591a\u7ea7\u2eda\u8868&#xff0c;\u4f46\u662f\u591a\u7ea7\u2eda\u8868\u4e5f\u662f\u2f00\u628a\u53cc\u5203\u5251&#xff0c;\u5728\u51cf\u5c11\u8fde\u7eed\u5b58\u50a8\u8981\u6c42\u4e14\u51cf\u5c11\u5b58\u50a8\u7a7a\u95f4\u7684\u540c\u65f6\u964d\u4f4e\u4e86\u67e5\u8be2\u6548\u7387\u3002<\/li>\n<\/ul>\n<p><font color=\"blue\">\u4e3a\u4ec0\u4e48\u8981\u7528\u540e12\u4f4d\u4f5c\u4e3a\u9875\u504f\u79fb\u91cf\u5462&#xff1f;<\/font> \u2003\u200312\u4e2abite\u4f4d\u80fd\u8868\u793a<font color=\"orange\"><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          2<\/p>\n<p>          12<\/p>\n<p>         &#061;<\/p>\n<p>         4096<\/p>\n<p>        2^{12}&#061;4096<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8141em\"><\/span><span class=\"mord\"><span class=\"mord\">2<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">12<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">4096<\/span><\/span><\/span><\/span><\/span><\/font>\u4e2a\u5b57\u8282&#xff0c;\u800c\u4e00\u4e2a\u9875\u6846&#xff08;\u6570\u636e\u5757&#xff09;\u7684\u5927\u5c0f\u521a\u597d\u662f4096\u5b57\u8282\u3002\u90a3\u4e48\u53ea\u8981\u662f\u9ad820\u4f4d\u7684\u865a\u62df\u5730\u5740\u76f8\u540c&#xff0c;\u5c31\u5fc5\u7136\u4f7f\u5f97\u865a\u62df\u5730\u5740\u6620\u5c04\u5230\u540c\u4e00\u4e2a\u5730\u5740\u5757\u4e2d\u3002\u6709\u5f88\u597d\u7684\u805a\u96c6\u6548\u679c&#xff0c;\u6839\u636e\u5c40\u90e8\u6027\u539f\u7406&#xff0c;\u80fd\u4f7f\u5f97\u6570\u636e\u8bbf\u95ee\u66f4\u9ad8\u6548\u3002<\/p>\n<p>\u2003\u2003\u73b0\u5728\u77e5\u9053\u865a\u62df\u5730\u5740\u600e\u4e48\u901a\u8fc7\u9875\u8868\u627e\u5230\u7269\u7406\u5730\u5740\u4e86\u3002\u4f46\u95ee\u9898\u6709\u6765\u4e86&#xff0c;\u9875\u76ee\u5f55\u5730\u5740\u662f\u5728\u7269\u7406\u5185\u5b58\u4e0a\u5b58\u50a8\u7684&#xff0c;\u6211\u4eec\u53c8<font color=\"blue\">\u600e\u4e48\u627e\u5230\u9875\u76ee\u5f55\u5462&#xff1f;<\/font>\u5728CPU\u5185\u5b58\u6709\u4e00\u4e2aCR3\u5bc4\u5b58\u5668&#xff0c;\u4fdd\u5b58\u4e86\u5f53\u524d\u8fdb\u7a0b\u4e0b\u9875\u8868\u76ee\u7684\u8d77\u59cb\u5730\u5740&#xff0c;\u901a\u8fc7CR3\u8bbf\u95ee\u9875\u76ee\u5f55\u3002 \u2003\u2003\u6b64\u5916CPU\u5185\u96c6\u6210\u4e86MMU&#xff08;\u5185\u5b58\u7ba1\u7406\u5355\u5143&#xff09;\u5b83\u7684\u5de5\u4f5c\u662f\u5c06\u865a\u62df\u5730\u5740\u901a\u8fc7\u9875\u8868\u627e\u7269\u7406\u5730\u5740&#xff0c;\u865a\u62df\u5730\u5740&#xff08;\u8fdb&#xff09;-&gt;CPU-&gt;\u7269\u7406\u5730\u5740&#xff08;\u51fa&#xff09;<\/p>\n<p>\u2003\u2003MMU\u9996\u5148\u4e0d\u4f1a\u76f4\u63a5\u53bb\u901a\u8fc7\u9875\u8868\u627e\u7269\u7406\u5730\u5740&#xff0c;\u6bcf\u6b21\u90fd\u8fd9\u4e48\u627e\u8fd8\u662f\u6709\u4e9b\u6162&#xff0c;\u800c\u662f\u5148\u67e5\u8be2\u4e00\u4e2a\u9ad8\u901f\u7f13\u5b58\u7ed3\u6784 \u2014\u2014TLB&#xff08;Translation Lookaside Buffer&#xff0c;\u4e5f\u79f0\u4e3a\u5feb\u8868&#xff09;&#xff0c;\u5f53 CPU \u7ed9 MMU \u4f20\u65b0\u865a\u62df\u5730\u5740\u4e4b\u540e&#xff0c; MMU \u5148\u53bb\u95ee TLB \u90a3\u8fb9\u6709\u6ca1\u6709&#xff0c;\u5982\u679c\u6709\u5c31\u76f4\u63a5\u62ff\u5230\u7269\u7406\u5730\u5740\u53d1\u5230\u603b\u7ebf\u7ed9\u5185\u5b58\u3002MMU\u4f1a\u53bb\u2eda\u8868\u4e2d\u627e\u5230\u7269\u7406\u5730\u5740\u4e4b\u540e&#xff0c;\u4f1a\u628a\u8fd9\u6761\u6620\u5c04\u5173\u7cfb\u7ed9\u5230TLB\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221915-699f756307d89.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u2003\u2003\u5982\u679cCPU\u7ed9MMU\u7684\u865a\u62df\u5730\u5740&#xff0c;\u5728 TLB \u548c\u2eda\u8868\u90fd\u6ca1\u6709\u627e\u5230\u5bf9\u5e94\u7684\u7269\u7406\u2eda&#xff0c;\u5c31\u662f\u7f3a\u2eda\u5f02\u5e38 Page Fault &#xff0c;\u5b83\u662f\u2f00\u4e2a\u7531\u786c\u4ef6\u4e2d\u65ad\u89e6\u53d1\u7684\u53ef\u4ee5\u7531\u8f6f\u4ef6\u903b\u8f91\u7ea0\u6b63\u7684\u9519\u8bef&#xff1b;\u5982\u679c\u2f6c\u6807\u5185\u5b58\u2eda\u5728\u7269\u7406\u5185\u5b58\u4e2d\u6ca1\u6709\u5bf9\u5e94\u7684\u7269\u7406\u2eda\u6216\u8005\u5b58\u5728\u4f46\u2f46\u5bf9\u5e94\u6743\u9650&#xff0c;CPU\u5c31\u2f46\u6cd5\u83b7\u53d6\u6570\u636e&#xff0c;\u8fd9\u79cd\u60c5\u51b5\u4e0bCPU\u5c31\u4f1a\u62a5\u544a\u2f00\u4e2a\u7f3a\u2eda\u9519\u8bef&#xff1b;\u7531\u4e8eCPU\u6ca1\u6709\u6570\u636e\u5c31\u2f46\u6cd5\u8fdb\u2f8f\u8ba1\u7b97&#xff0c;CPU\u7f62\u2f2f\u4e86\u7528\u6237\u8fdb\u7a0b\u4e5f\u5c31\u51fa\u73b0\u4e86\u7f3a\u2eda\u4e2d\u65ad&#xff0c;\u8fdb\u7a0b\u4f1a\u4ece\u7528\u6237\u6001\u5207\u6362\u5230\u5185\u6838\u6001&#xff0c;\u5e76\u5c06\u7f3a\u2eda\u4e2d\u65ad\u4ea4\u7ed9\u5185\u6838\u7684Page Fault Handler \u5904\u7406\u3002<\/p>\n<p>\u5176\u6839\u636e\u7f3a\u2eda\u4e2d\u65ad\u7684\u4e0d\u540c\u7c7b\u578b\u4f1a\u8fdb\u2f8f\u4e0d\u540c\u7684\u5904\u7406&#xff1a;<\/p>\n<ul>\n<li>Hard Page Fault \u4e5f\u88ab\u79f0\u4e3a Major Page Fault &#xff0c;\u7ffb\u8bd1\u4e3a\u786c\u7f3a\u2eda\u9519\u8bef\/\u4e3b\u8981\u7f3a\u2eda\u9519\u8bef&#xff0c;\u8fd9\u65f6\u7269\u7406\u5185\u5b58\u4e2d\u6ca1\u6709\u5bf9\u5e94\u7684\u7269\u7406\u2eda&#xff0c;\u9700\u8981CPU\u6253\u5f00\u78c1\u76d8\u8bbe\u5907\u8bfb\u53d6\u5230\u7269\u7406\u5185\u5b58\u4e2d&#xff0c;\u518d\u8ba9MMU\u5efa\u2f74\u865a\u62df\u5730\u5740\u548c\u7269\u7406\u5730\u5740\u7684\u6620\u5c04\u3002<\/li>\n<li>Soft Page Fault \u4e5f\u88ab\u79f0\u4e3a Minor Page Fault &#xff0c;\u7ffb\u8bd1\u4e3a\u8f6f\u7f3a\u2eda\u9519\u8bef\/\u6b21\u8981\u7f3a\u2eda\u9519\u8bef&#xff0c;\u8fd9\u65f6\u7269\u7406\u5185\u5b58\u4e2d\u662f\u5b58\u5728\u5bf9\u5e94\u7269\u7406\u2eda\u7684&#xff0c;\u53ea\u4e0d\u8fc7\u53ef\u80fd\u662f\u5176\u4ed6\u8fdb\u7a0b\u8c03\u2f0a\u7684&#xff0c;\u53d1\u51fa\u7f3a\u2eda\u5f02\u5e38\u7684\u8fdb\u7a0b\u4e0d\u77e5\u9053\u2f7d\u5df2&#xff0c;\u6b64\u65f6MMU\u53ea\u9700\u8981\u5efa\u2f74\u6620\u5c04\u5373\u53ef&#xff0c;\u2f46\u9700\u4ece\u78c1\u76d8\u8bfb\u53d6\u5199\u2f0a\u5185\u5b58&#xff0c;\u2f00\u822c\u51fa\u73b0\u5728\u591a\u8fdb\u7a0b\u5171\u4eab\u5185\u5b58\u533a\u57df\u3002<\/li>\n<li>Invalid Page Fault \u7ffb\u8bd1\u4e3a\u2f46\u6548\u7f3a\u2eda\u9519\u8bef&#xff0c;\u2f50\u5982\u8fdb\u7a0b\u8bbf\u95ee\u7684\u5185\u5b58\u5730\u5740\u8d8a\u754c\u8bbf\u95ee&#xff0c;\u2f1c\u2f50\u5982\u5bf9\u7a7a\u6307\u9488\u89e3\u5f15\u2f64\u5185\u6838\u5c31\u4f1a\u62a5 segment fault \u9519\u8bef\u4e2d\u65ad\u8fdb\u7a0b\u76f4\u63a5\u6302\u6389\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221915-699f756331ee5.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <font color=\"blue\">\u5982\u4f55\u7406\u89e3\u6211\u4eec\u4e4b\u524d\u7684 new\u548cmalloc &#xff1f;<\/font> \u2003\u2003\u5185\u5b58\u7533\u8bf7\u7684\u672c\u8d28\u5c31\u662f\u5206\u914d\u865a\u62df\u5730\u5740\u7a7a\u95f4&#xff08;\u5373\u6539\u53d8\u6307\u9488\u6307\u5411&#xff09;&#xff0c;\u4f46\u5e76\u4e0d\u76f4\u63a5\u5728\u7269\u7406\u5185\u5b58\u4e2d\u5f00\u8f9f\u7a7a\u95f4&#xff0c;\u53ea\u6709\u5728\u7528\u8be5\u5185\u5b58\u65f6\u624d\u4f1a\u5f00\u8f9f\u7a7a\u95f4\u5efa\u7acb\u9875\u8868\u6620\u5c04\u3002\u5373\u5ef6\u8fdf\u7533\u8bf7&#xff0c;\u4f60\u7533\u8bf7\u4e86\u4e0d\u7528&#xff0c;\u53ef\u4ee5\u5148\u7ed9\u522b\u4eba\u7528&#xff0c;\u63d0\u9ad8\u5185\u5b58\u4f7f\u7528\u7684\u5145\u5206\u5ea6\u3002<\/p>\n<ul>\n<li>\u603b\u7ed31&#xff1a;\u8fdb\u7a0b\u53ef\u4ee5\u770b\u505a\u4e00\u5f20\u9875\u76ee&#043;n\u5f20\u9875\u8868\u6784\u5efa\u7684\u6620\u5c04\u4f53\u73b0&#xff0c;\u4ee5\u865a\u62df\u5730\u5740\u4f5c\u4e3a\u7d22\u5f15&#xff0c;\u7269\u7406\u5730\u5740\u9875\u6846\u662f\u76ee\u6807\u3002<\/li>\n<li>\u603b\u7ed32&#xff1a;\u8d44\u6e90\u5212\u5206\/\u5171\u4eab\u672c\u8d28\u662f\u9875\u8868\u6761\u76ee\u7684\u5212\u5206\/\u5171\u4eab\u3002<\/li>\n<\/ul>\n<p>\u975e\u5e38\u611f\u8c22\u60a8\u80fd\u8010\u5fc3\u8bfb\u5b8c\u8fd9\u7bc7\u6587\u7ae0\u3002\u5018\u82e5\u60a8\u4ece\u4e2d\u6709\u6240\u6536\u83b7&#xff0c;\u8fd8\u671b\u591a\u591a\u652f\u6301\u5440&#xff01; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260225221915-699f756360425.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00&#xff1a;\u865a\u62df\u5185\u5b58\u3001\u7269\u7406\u5185\u5b58\u4e0e\u9875\u8868&#xff0c;\u662f\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u5185\u5b58\u7ba1\u7406\u7684\u4e09\u5927\u6838\u5fc3\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u7ed3\u6784\u3001\u6620\u5c04\u673a\u5236\u7b49\u89d2\u5ea6&#xff0c;\u7cfb\u7edf\u8bb2\u89e3\u865a\u62df\u5730\u5740\u7a7a\u95f4\u3001\u9875\u8868\u5de5\u4f5c\u65b9\u5f0f\u3001\u7269\u7406\u5185\u5b58\u7ba1\u7406&#xff0c;\u5e26\u4f60\u5f7b\u5e95\u7406\u89e3\u7a0b\u5e8f\u80cc\u540e\u7684\u5185\u5b58\u4e16\u754c\u3002 \u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u4ec0\u4e48\u662f\u865a\u62df\u5185\u5b58\u4e8c\u3001\u865a\u62df\u5185\u5b58\u7684\u63cf\u8ff0\u4e0e\u7ec4\u7ec7\u4e09\u3001\u9875\u8868\u7684\u4f18\u52bf\u56db\u3001\u865a\u62df\u5185\u5b58\u533a\u57df\u5212\u5206\u4e94\u3001\u7269\u7406\u7a7a\u95f4\u7406\u89e3\u516d\u3001\u9875\u8868\u6620\u5c04\u539f\u7406\u95ee\u9898\u5f15\u5165\u4e3a\u5f15\u5165\u4eca\u5929\u7684\u8bdd\u9898&#xff0c;\u6211\u4eec\u5148\u6765\u770b\u4e0b\u9762\u4e00\u6bb5\u7a0b\u5e8f&#xff1a;#include#incl<\/p>\n","protected":false},"author":2,"featured_media":78062,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,398,44],"topic":[],"class_list":["post-78073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-398","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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