{"id":208371,"date":"2025-08-01T15:50:41","date_gmt":"2025-08-01T07:50:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/?p=208371"},"modified":"2025-08-01T15:50:41","modified_gmt":"2025-08-01T07:50:41","slug":"linux%e8%a8%98%e6%86%b6%e9%ab%94%e7%9a%84%e5%8b%95%e6%85%8b%e7%94%b3%e8%ab%8b%e8%88%87%e9%87%8b%e6%94%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208371\/","title":{"rendered":"Linux\u8a18\u61b6\u9ad4\u7684\u52d5\u614b\u7533\u8acb\u8207\u91cb\u653e"},"content":{"rendered":"<h4><strong>\u5f15\u8a00<\/strong><\/h4>\n<blockquote>\n<p class=\"ds-markdown-paragraph\">\u672c\u6587\u65e8\u5728\u63a2\u8a0eLinux\u8a18\u61b6\u9ad4\u7ba1\u7406\u7684\u6838\u5fc3\u6a5f\u5236\uff0c\u4e26\u7d50\u5408<a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u7684\u5be6\u969b\u61c9\u7528\u5834\u666f\uff0c\u5206\u6790\u5982\u4f55\u512a\u5316\u8a18\u61b6\u9ad4\u4f7f\u7528\u3002\u9999\u6e2f\u4f5c\u70ba\u4e9e\u592a\u5730\u5340\u7684\u91cd\u8981\u4e92\u806f\u7db2\u6a1e\u7d10\uff0c\u5176\u4f3a\u670d\u5668\u9700\u8655\u7406\u9ad8\u8ca0\u8f09\u548c\u9ad8\u4f75\u767c\u8acb\u6c42\uff0c\u8a18\u61b6\u9ad4\u7ba1\u7406\u7684\u512a\u5316\u5c0d\u6548\u80fd\u8207\u7a69\u5b9a\u6027\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<\/blockquote>\n<hr \/>\n<h4><strong>1. Linux\u8a18\u61b6\u9ad4\u5206\u914d\u57fa\u790e\uff1a\u5925\u4f34\u7cfb\u7d71 (Buddy System)<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Linux \u4f7f\u7528\u00a0<strong>\u5925\u4f34\u7cfb\u7d71<\/strong>\u00a0\u7ba1\u7406\u5be6\u9ad4\u8a18\u61b6\u9ad4\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u7cfb\u7d71\u5c07\u8a18\u61b6\u9ad4\u5283\u5206\u70ba\u4e0d\u540c\u5927\u5c0f\u7684\u584a\uff08\u901a\u5e38\u4ee5\u00a0<strong>4KB<\/strong>\u00a0\u70ba\u55ae\u4f4d\uff09\uff0c\u900f\u904e\u00a0<strong>\u5408\u4f75\u8207\u5206\u5272<\/strong>\u00a0\u6eff\u8db3\u8a18\u61b6\u9ad4\u8acb\u6c42\u3002<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u7bc4\u4f8b\uff1a<\/em>\u00a0\u7533\u8acb 8KB \u8a18\u61b6\u9ad4\u6642\uff0c\u7cfb\u7d71\u53ef\u80fd\u5f9e 16KB \u584a\u4e2d\u5206\u5272\u51fa\u6240\u9700\u90e8\u5206\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u7814\u7a76\u986f\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u8a72\u65b9\u6cd5\u5728\u7ba1\u7406\u8a18\u61b6\u9ad4\u788e\u7247\u4e0a\u6709\u6548\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u4f46\u8f03\u5927\u7c92\u5ea6\u53ef\u80fd\u5c0e\u81f4\u6d6a\u8cbb\uff0c\u5c24\u5176\u5728\u5c0f\u8a18\u61b6\u9ad4\u5206\u914d\u983b\u7e41\u7684\u5834\u666f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u7406\u89e3\u5925\u4f34\u7cfb\u7d71\u6709\u52a9\u65bc\u7ba1\u7406\u54e1\u76e3\u63a7\u8207\u512a\u5316\u8a18\u61b6\u9ad4\u4f7f\u7528\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u9ad8\u8ca0\u8f09\u4e0b\uff0c\u4f3a\u670d\u5668\u983b\u7e41\u5206\u914d\/\u91cb\u653e\u8a18\u61b6\u9ad4\uff0c\u5925\u4f34\u7cfb\u7d71\u6548\u7387\u76f4\u63a5\u5f71\u97ff\u6548\u80fd\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u61c9\u7528\u5834\u666f\uff1a<\/em>\u00a0Web \u4f3a\u670d\u5668\u8655\u7406\u5927\u91cf\u77ed\u66ab\u9023\u7dda\u6642\uff0c\u8a18\u61b6\u9ad4\u5206\u914d\u5ef6\u9072\u53ef\u80fd\u5c0e\u81f4\u56de\u61c9\u6642\u9593\u5ef6\u9577\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>2. \u6838\u5fc3\u7a7a\u9593\u7684\u8a18\u61b6\u9ad4\u5206\u914d\uff1aSlab \u5206\u914d\u5668<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u89e3\u6c7a\u554f\u984c\uff1a<\/strong>\u00a0\u6838\u5fc3\u7a7a\u9593\u7684\u5c0f\u8a18\u61b6\u9ad4\u5206\u914d\uff08\u5982 8 \u4f4d\u5143\u7d44\uff09\u975e\u5e38\u5e38\u898b\uff0c\u76f4\u63a5\u4f7f\u7528\u5925\u4f34\u7cfb\u7d71\u6548\u7387\u4f4e\u4e0b\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u6a5f\u5236\uff1a<\/strong>\u00a0Slab \u5206\u914d\u5668\u5c07\u8a18\u61b6\u9ad4\u5283\u5206\u70ba\u00a0<strong>\u5feb\u53d6\u5340<\/strong>\uff0c\u6bcf\u500b\u5feb\u53d6\u5340\u5c0d\u61c9\u7279\u5b9a\u8cc7\u6599\u7d50\u69cb\u6216\u5927\u5c0f\u7bc4\u570d\uff08\u5982\u00a0<code>kmalloc-32<\/code>\u00a0\u7528\u65bc 32 \u4f4d\u5143\u7d44\u5206\u914d\uff09\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u4e09\u7a2e\u5be6\u73fe\uff1a<\/strong>\u00a0<code>slab<\/code>\u3001<code>slub<\/code>\u3001<code>slob<\/code>\uff0c\u5206\u5225\u91dd\u5c0d\u4e0d\u540c\u5834\u666f\u512a\u5316\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u8b49\u64da\u986f\u793a\uff1a<\/strong>\u00a0Slab \u5206\u914d\u5668\u986f\u8457\u63d0\u5347\u5c0f\u8a18\u61b6\u9ad4\u5206\u914d\u6548\u7387\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u6838\u5fc3\u5c0f\u8a18\u61b6\u9ad4\u5206\u914d\u76f4\u63a5\u5f71\u97ff\u6574\u9ad4\u6548\u80fd\uff0c\u5c24\u5176\u5728\u8655\u7406\u9ad8\u4f75\u767c\u8acb\u6c42\u6642\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u61c9\u7528\u5834\u666f\uff1a<\/em>\u00a0\u7db2\u8def\u4f3a\u670d\u5668\u6bcf\u500b\u9023\u7dda\u53ef\u80fd\u9700\u5206\u914d\u5c0f\u8a18\u61b6\u9ad4\u584a\uff0c\u9ad8\u6548\u7684 Slab \u5206\u914d\u5668\u80fd\u6e1b\u5c11\u958b\u92b7\uff0c\u63d0\u5347\u56de\u61c9\u901f\u5ea6\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u8207\u5925\u4f34\u7cfb\u7d71\u7684\u95dc\u4fc2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Slab \u5f9e\u5925\u4f34\u7cfb\u7d71\u7372\u53d6\u5927\u584a\u8a18\u61b6\u9ad4\uff08\u5982 4KB\uff09\uff0c\u518d\u5207\u5272\u70ba\u5c0f\u584a\u7ba1\u7406\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u5169\u8005\u5728\u6f14\u7b97\u6cd5\u4e0a\u662f\u5e73\u7b49\u7684\uff0cSlab \u4f5c\u70ba\u00a0<strong>\u4e8c\u7d1a\u7ba1\u7406\u5668<\/strong>\uff0c\u5c08\u6ce8\u65bc\u5c0f\u8a18\u61b6\u9ad4\u5206\u914d\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>3. \u6838\u5fc3\u8a18\u61b6\u9ad4\u7533\u8acb\u51fd\u5f0f\uff1a<code>kmalloc<\/code>\u00a0vs.\u00a0<code>vmalloc<\/code><\/strong><\/h4>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th>\u7279\u6027<\/th>\n<th><code>kmalloc<\/code><\/th>\n<th><code>vmalloc<\/code><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u8a18\u61b6\u9ad4\u9023\u7e8c\u6027<\/strong><\/td>\n<td><strong>\u5be6\u9ad4\u4f4d\u5740\u9023\u7e8c<\/strong><\/td>\n<td><strong>\u865b\u64ec\u4f4d\u5740\u9023\u7e8c\uff0c\u5be6\u9ad4\u4f4d\u5740\u53ef\u80fd\u4e0d\u9023\u7e8c<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>\u5178\u578b\u5927\u5c0f<\/strong><\/td>\n<td>\u5c0f\u584a\uff08\u6578\u767e\u4f4d\u5143\u7d44 ~ \u6578\u5343\u4f4d\u5143\u7d44\uff09<\/td>\n<td>\u5927\u584a\uff08\u6578 MB \u4ee5\u4e0a\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6620\u5c04\u72c0\u614b<\/strong><\/td>\n<td>\u5206\u914d\u5f8c\u5df2\u6620\u5c04\uff0c<strong>\u7121\u9700<\/strong>\u984d\u5916\u9801\u8868\u64cd\u4f5c<\/td>\n<td>\u5206\u914d\u5f8c<strong>\u9700<\/strong>\u8a2d\u5b9a\u9801\u8868\u6620\u5c04<\/td>\n<\/tr>\n<tr>\n<td><strong>\u9069\u7528\u5340\u57df<\/strong><\/td>\n<td>\u9069\u5408<strong>\u4f4e\u7aef\u8a18\u61b6\u9ad4\u5340<\/strong><\/td>\n<td>\u9069\u5408<strong>\u9ad8\u7aef\u8a18\u61b6\u9ad4\u5340<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u4f3a\u670d\u5668\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u9078\u64c7\u5408\u9069\u65b9\u6cd5\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u61c9\u7528\u5834\u666f\uff1a<\/em><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Web \u4f3a\u670d\u5668\u9700\u5927\u91cf\u5c0f\u584a\u8a18\u61b6\u9ad4 \u2192\u00a0<code>kmalloc<\/code>\u00a0\u66f4\u9ad8\u6548\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u8cc7\u6599\u5eab\u4f3a\u670d\u5668\u8655\u7406\u5927\u584a\u8cc7\u6599 \u2192\u00a0<code>vmalloc<\/code>\u00a0\u66f4\u9069\u5408\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u7ba1\u7406\u54e1\u9700\u6839\u64da\u61c9\u7528\u9700\u6c42\uff0c\u6b0a\u8861\u6548\u80fd\u8207\u8a18\u61b6\u9ad4\u9023\u7e8c\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>4. \u4f7f\u7528\u8005\u7a7a\u9593\u7684\u8a18\u61b6\u9ad4\u5206\u914d\uff1a<code>malloc<\/code>\u00a0\u8207\u60f0\u6027\u5206\u914d (Lazy Allocation)<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u6a5f\u5236\uff1a<\/strong><\/p>\n<ol start=\"1\">\n<li>\n<p class=\"ds-markdown-paragraph\">\u4f7f\u7528\u8005\u7a7a\u9593\u900f\u904e\u00a0<code>malloc<\/code>\u00a0\u7533\u8acb\u8a18\u61b6\u9ad4\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Linux \u63a1\u7528\u00a0<strong>\u60f0\u6027\u5206\u914d<\/strong>\uff1a<code>malloc<\/code>\u00a0\u6210\u529f\u6642\u50c5\u5206\u914d<strong>\u865b\u64ec\u4f4d\u5740\u7a7a\u9593<\/strong>\uff0c<strong>\u4e0d\u7acb\u5373<\/strong>\u5206\u914d\u5be6\u9ad4\u8a18\u61b6\u9ad4\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u5be6\u969b\u5b58\u53d6\u8a18\u61b6\u9ad4\u6642\u89f8\u767c<strong>\u9801\u932f\u8aa4 (Page Fault)<\/strong>\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u6838\u5fc3\u624d\u5206\u914d\u5be6\u9ad4\u8a18\u61b6\u9ad4\u9801\u9762\u3002<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u7814\u7a76\u986f\u793a\uff1a<\/strong>\u00a0\u6b64\u6a5f\u5236\u63d0\u9ad8\u8a18\u61b6\u9ad4\u5229\u7528\u7387\uff0c\u5c24\u5176\u5728\u8a18\u61b6\u9ad4\u7dca\u5f35\u6642\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u4f3a\u670d\u5668\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u6b64\u6a5f\u5236\u975e\u5e38\u5be6\u7528\uff0c\u5141\u8a31\u4f3a\u670d\u5668\u5feb\u901f\u5206\u914d\u5927\u91cf\u8a18\u61b6\u9ad4\u800c\u4e0d\u7acb\u5373\u4f54\u7528\u8cc7\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u61c9\u7528\u5834\u666f\uff1a<\/em>\u00a0\u670d\u52d9\u555f\u52d5\u6642\u5ba3\u544a\u5206\u914d 100MB\uff0c\u5be6\u969b\u4f7f\u7528\u6642\u624d\u5206\u914d\u5be6\u9ad4\u9801\u9762\uff0c\u975e\u5e38\u9069\u5408\u9ad8\u4f75\u767c\u5834\u666f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>5. Linux \u4f3a\u670d\u5668\u8a18\u61b6\u9ad4\u5feb\u53d6\u7ba1\u7406<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u6311\u6230\uff1a<\/strong>\u00a0\u5feb\u53d6\u662f\u63d0\u5347\u6548\u80fd\u7684\u91cd\u8981\u6a5f\u5236\uff0c\u4f46\u904e\u591a\u5feb\u53d6\u53ef\u80fd\u4f54\u7528\u8a18\u61b6\u9ad4\uff0c\u5f71\u97ff\u6548\u80fd\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u5e38\u898b\u5feb\u53d6\u6e05\u7406\u65b9\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83d\udcc1 \u6e05\u7406\u9801\u9762\u5feb\u53d6\u3001\u76ee\u9304\u9805\u5feb\u53d6\u8207 inode \u5feb\u53d6\uff1a<\/strong><\/p>\n<div class=\"md-code-block md-code-block-light\">\n<div class=\"md-code-block-banner-wrap\">\n<div class=\"md-code-block-banner md-code-block-banner-lite\">\n<div class=\"_121d384\">\n<div class=\"d2a24f03\"><span class=\"d813de27\">bash<\/span><\/div>\n<div class=\"d2a24f03\">\n<div class=\"efa13877\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<pre><span class=\"token function\">sudo<\/span> <span class=\"token function\">sync<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token builtin class-name\">echo<\/span> <span class=\"token number\">3<\/span> <span class=\"token operator\">&gt;<\/span> \/proc\/sys\/vm\/drop_caches<\/pre>\n<\/div>\n<p class=\"ds-markdown-paragraph\">(<em>\u5148\u540c\u6b65\u78c1\u789f\u8cc7\u6599\u518d\u91cb\u653e\u5feb\u53d6<\/em>)<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83d\udcca \u76e3\u63a7\u8a18\u61b6\u9ad4\u4f7f\u7528\uff1a<\/strong>\u00a0\u4f7f\u7528\u00a0<code>htop<\/code>\u00a0\u6216\u00a0<code>top<\/code>\u00a0\u5de5\u5177\uff0c\u5373\u6642\u6aa2\u8996\u8a18\u61b6\u9ad4\u4f54\u7528\uff0c\u8b58\u5225\u9ad8\u8a18\u61b6\u9ad4\u884c\u7a0b\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u2699\ufe0f \u8abf\u6574\u61c9\u7528\u5feb\u53d6\u8a2d\u5b9a\uff1a<\/strong>\u00a0\u5982 Apache\u3001Nginx \u7684\u5feb\u53d6\u7b56\u7565\uff0c\u63a7\u5236\u5feb\u53d6\u5927\u5c0f\u8207\u904e\u671f\u6642\u9593\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83d\udcbe \u8cc7\u6599\u5eab\u512a\u5316\uff1a<\/strong>\u00a0\u8abf\u6574 MySQL \u7684\u00a0<code>innodb_buffer_pool_size<\/code>\u00a0\u6216 PostgreSQL \u5feb\u53d6\u53c3\u6578\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u8a18\u61b6\u9ad4\u512a\u5316\u65b9\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83d\udda5\ufe0f \u589e\u52a0\u5be6\u9ad4\u8a18\u61b6\u9ad4\uff1a<\/strong>\u00a0\u82e5\u983b\u7e41\u4f7f\u7528 swap\uff0c\u8003\u616e\u786c\u9ad4\u5347\u7d1a\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u2699\ufe0f \u8abf\u6574\u8a18\u61b6\u9ad4\u9801\u9762\u5feb\u53d6\u7b56\u7565\uff1a<\/strong>\u00a0\u4fee\u6539\u00a0<code>vm.swappiness<\/code>\u00a0\u53c3\u6578\uff08\u4f8b\u5982\u8a2d\u70ba\u00a0<code>10<\/code>\uff09\u4ee5\u6e1b\u5c11\u4ea4\u63db\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83e\udde9 \u8a18\u61b6\u9ad4\u5206\u914d\u512a\u5316\uff1a<\/strong>\u00a0\u4f7f\u7528<strong>\u8a18\u61b6\u9ad4\u6c60 (Memory Pool)<\/strong>\u00a0\u6280\u8853\u6e1b\u5c11\u788e\u7247\uff0c\u907f\u514d\u983b\u7e41\u00a0<code>malloc<\/code>\/<code>free<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\ud83d\udd0d \u8a18\u61b6\u9ad4\u6d29\u6f0f\u76e3\u63a7\uff1a<\/strong>\u00a0\u4f7f\u7528\u00a0<code>valgrind<\/code>\u00a0\u6216\u00a0<code>heaptrack<\/code>\u00a0\u6aa2\u6e2c\u4e26\u4fee\u5fa9\u8a18\u61b6\u9ad4\u6d29\u6f0f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u4f3a\u670d\u5668\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u8655\u7406\u9ad8\u8ca0\u8f09\u8207\u9ad8\u4f75\u767c\u8acb\u6c42\u6642\uff0c\u512a\u5316\u8a18\u61b6\u9ad4\u4f7f\u7528\u53ef\u986f\u8457\u63d0\u5347\u6548\u80fd\u8207\u7a69\u5b9a\u6027\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u4e0a\u8ff0\u65b9\u6cd5\u5728\u6b64\u985e\u74b0\u5883\u4e2d\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>6. \u8a18\u61b6\u9ad4\u4e0d\u8db3\u6642\u7684\u8655\u7406\uff1aOOM \u6a5f\u5236<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u6a5f\u5236\uff1a<\/strong>\u00a0\u7576\u8a18\u61b6\u9ad4\u56b4\u91cd\u4e0d\u8db3\u6642\uff0cLinux \u6838\u5fc3\u555f\u52d5\u00a0<strong>OOM Killer (Out-Of-Memory Killer)<\/strong>\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u904b\u4f5c\u65b9\u5f0f\uff1a<\/strong>\u00a0\u6839\u64da\u884c\u7a0b\u7684\u8a18\u61b6\u9ad4\u4f7f\u7528\u91cf\u548c\u512a\u5148\u9806\u5e8f\u8a08\u7b97\u00a0<strong>OOM \u8a55\u5206<\/strong>\uff0c<strong>\u8a55\u5206\u8d8a\u9ad8<\/strong>\u7684\u884c\u7a0b\u8d8a<strong>\u512a\u5148<\/strong>\u88ab\u7d42\u6b62\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u7ba1\u7406\u4ecb\u5165\uff1a<\/strong>\u00a0\u7ba1\u7406\u54e1\u53ef\u900f\u904e\u8abf\u6574\u00a0<code>\/proc\/&lt;pid&gt;\/oom_score_adj<\/code>\u00a0\u7684\u503c\u4f86<strong>\u4fdd\u8b77<\/strong>\u95dc\u9375\u884c\u7a0b\uff08\u8a2d\u5b9a\u70ba\u8ca0\u503c\uff09\u6216<strong>\u6a19\u8a18<\/strong>\u512a\u5148\u7d42\u6b62\u7684\u884c\u7a0b\uff08\u8a2d\u5b9a\u70ba\u6b63\u503c\uff09\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u4f3a\u670d\u5668\u8996\u89d2\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">\u7ba1\u7406 OOM \u6a5f\u5236\u81f3\u95dc\u91cd\u8981\uff0c\u56e0\u4f3a\u670d\u5668\u901a\u5e38\u57f7\u884c\u591a\u500b\u95dc\u9375\u670d\u52d9\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">\u7d42\u6b62\u91cd\u8981\u884c\u7a0b\u53ef\u80fd\u5c0e\u81f4\u670d\u52d9\u4e2d\u65b7\u751a\u81f3\u7cfb\u7d71\u7671\u7613\u3002<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><em>\u61c9\u7528\u5834\u666f\uff1a<\/em>\u00a0\u82e5 Web \u670d\u52d9\u884c\u7a0b\u88ab\u610f\u5916\u7d42\u6b62\uff0c\u5c07\u4e2d\u65b7\u4f7f\u7528\u8005\u5b58\u53d6\uff1b\u9700\u8abf\u6574\u8a2d\u5b9a\u78ba\u4fdd\u95dc\u9375\u670d\u52d9\u7a69\u5b9a\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>\u7d50\u8ad6<\/strong><\/h4>\n<blockquote>\n<p class=\"ds-markdown-paragraph\">\u7d9c\u4e0a\u6240\u8ff0\uff0cLinux \u8a18\u61b6\u9ad4\u7ba1\u7406\u6a5f\u5236\u6db5\u84cb\u5ee3\u6cdb\uff0c\u5f9e\u5e95\u5c64\u7684\u00a0<strong>\u5925\u4f34\u7cfb\u7d71<\/strong>\u00a0\u5230\u5c08\u7cbe\u5c0f\u8a18\u61b6\u9ad4\u7684\u00a0<strong>Slab \u5206\u914d\u5668<\/strong>\uff0c\u5f9e\u6838\u5fc3\u7684\u00a0<code>kmalloc<\/code>\/<code>vmalloc<\/code>\u00a0\u5230\u4f7f\u7528\u8005\u7a7a\u9593\u7684\u00a0<strong>\u60f0\u6027\u5206\u914d<\/strong>\uff0c\u518d\u5230\u7dca\u6025\u60c5\u6cc1\u7684\u00a0<strong>OOM \u6a5f\u5236<\/strong>\u3002\u7d50\u5408\u00a0<a href=\"https:\/\/server.hk\/\"><strong>\u9999\u6e2f\u4f3a\u670d\u5668<\/strong><\/a>\u00a0\u9762\u5c0d\u9ad8\u8ca0\u8f09\u3001\u9ad8\u4f75\u767c\u7684\u7279\u6027\uff0c\u512a\u5316\u8a18\u61b6\u9ad4\u4f7f\u7528\u9700\u8457\u91cd\u65bc\uff1a<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u5feb\u53d6\u7ba1\u7406\u7b56\u7565<\/strong><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>\u8a18\u61b6\u9ad4\u5206\u914d\u65b9\u6cd5\u9078\u64c7<\/strong><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>OOM \u6a5f\u5236\u8abf\u6574<\/strong><\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">\u900f\u904e\u5408\u7406\u914d\u7f6e\u8207\u512a\u5316\uff0c\u7ba1\u7406\u54e1\u80fd\u6700\u5927\u5316\u5229\u7528\u6709\u9650\u8cc7\u6e90\uff0c\u70ba\u4f7f\u7528\u8005\u63d0\u4f9b<strong>\u9ad8\u6548\u4e14\u7a69\u5b9a<\/strong>\u7684\u670d\u52d9\u3002<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00 \u672c\u6587\u65e8\u5728\u63a2\u8a0eLinux\u8a18\u61b6&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-208371","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208371"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208371\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}