{"id":717,"date":"2026-07-18T22:35:54","date_gmt":"2026-07-18T14:35:54","guid":{"rendered":"https:\/\/tcsm.info\/?p=717"},"modified":"2026-07-18T22:35:54","modified_gmt":"2026-07-18T14:35:54","slug":"ubuntu-debian-%e9%85%8d%e7%bd%ae-swap-%e5%ae%8c%e6%95%b4%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/tcsm.info\/?p=717","title":{"rendered":"Ubuntu \/ Debian \u914d\u7f6e Swap \u5b8c\u6574\u6307\u5357"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Ubuntu \/ Debian \u914d\u7f6e Swap \u5b8c\u6574\u6307\u5357<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f Swap\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Swap\uff08\u4ea4\u6362\u7a7a\u95f4\uff09\u662f\u786c\u76d8\u4e0a\u7684\u4e00\u5757\u7a7a\u95f4\uff0c\u5f53\u7cfb\u7edf\u5185\u5b58\uff08RAM\uff09\u4e0d\u8db3\u65f6\uff0cLinux \u4f1a\u5c06\u6682\u65f6\u4e0d\u7528\u7684\u6570\u636e\u79fb\u5230 Swap \u4e2d\uff0c\u4ee5\u907f\u514d\u56e0\u5185\u5b58\u8017\u5c3d\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u6216\u7cfb\u7edf\u88ab OOM Killer \u6740\u6b7b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f18\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9632\u6b62\u5185\u5b58\u4e0d\u8db3\u5bfc\u81f4\u670d\u52a1\u5d29\u6e83<\/li>\n\n\n\n<li>\u63d0\u9ad8\u5c0f\u5185\u5b58 VPS \u7684\u7a33\u5b9a\u6027<\/li>\n\n\n\n<li>Docker\u3001MySQL\u3001Node.js\u3001Java \u7b49\u7a0b\u5e8f\u66f4\u5bb9\u6613\u6b63\u5e38\u8fd0\u884c<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u7f3a\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Swap \u4f4d\u4e8e\u786c\u76d8\u4e0a\uff0c\u901f\u5ea6\u8fdc\u4f4e\u4e8e\u5185\u5b58<\/li>\n\n\n\n<li>\u9891\u7e41\u4f7f\u7528 Swap \u4f1a\u964d\u4f4e\u6027\u80fd<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Swap \u7684\u4f5c\u7528\u662f\u63d0\u9ad8\u7cfb\u7edf\u7a33\u5b9a\u6027\uff0c\u800c\u4e0d\u662f\u66ff\u4ee3\u5185\u5b58\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u67e5\u770b\u5f53\u524d\u5185\u5b58\u548c Swap \u72b6\u6001<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u5185\u5b58\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>free -h\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b Swap\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapon --show\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u521b\u5efa 2GB Swap<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u521b\u5efa Swap \u6587\u4ef6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u521b\u5efa\u4e00\u4e2a 2GB \u7684 Swap \u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo fallocate -l 2G \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u63d0\u793a fallocate \u4e0d\u652f\u6301\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo dd if=\/dev\/zero of=\/swapfile bs=1M count=2048\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>2G<\/code> \u8868\u793a 2GB<\/li>\n\n\n\n<li><code>\/swapfile<\/code> \u4e3a Swap \u6587\u4ef6\u540d\u79f0<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u8bbe\u7f6e\u6743\u9650<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Swap \u6587\u4ef6\u5fc5\u987b\u4ec5\u5141\u8bb8 root \u8bbf\u95ee\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo chmod 600 \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ls -lh \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\u7c7b\u4f3c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-rw------- 1 root root 2.0G ...\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u683c\u5f0f\u5316 Swap \u6587\u4ef6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u666e\u901a\u6587\u4ef6\u8f6c\u6362\u4e3a Swap \u683c\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo mkswap \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6210\u529f\u540e\u4f1a\u663e\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Setting up swapspace version 1\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u542f\u7528 Swap<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7acb\u5373\u542f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo swapon \/swapfile\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u9a8c\u8bc1\u662f\u5426\u751f\u6548<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapon --show\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b63\u786e\u8f93\u51fa\u7c7b\u4f3c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>NAME      TYPE SIZE USED PRIO\n\/swapfile file   2G   0B   -2\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u53ca\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>free -h\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>               total        used        free\nMem:           403Mi       173Mi        12Mi\nSwap:          2.0Gi       0.0Ki       2.0Gi\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u660e Swap \u5df2\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u8bbe\u7f6e\u5f00\u673a\u81ea\u52a8\u52a0\u8f7d<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f16\u8f91\u7cfb\u7edf\u6302\u8f7d\u914d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo '\/swapfile none swap sw 0 0' | sudo tee -a \/etc\/fstab\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>grep swapfile \/etc\/fstab\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/swapfile none swap sw 0 0\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u660e\u7cfb\u7edf\u91cd\u542f\u540e\u4f1a\u81ea\u52a8\u542f\u7528 Swap\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4f18\u5316 Swap \u4f7f\u7528\u7b56\u7565<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u5f53\u524d\u53c2\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat \/proc\/sys\/vm\/swappiness\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u9ed8\u8ba4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>60\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e VPS \u6216\u670d\u52a1\u5668\uff0c\u63a8\u8350\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo sysctl vm.swappiness=10\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6c38\u4e45\u751f\u6548\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo 'vm.swappiness=10' | sudo tee -a \/etc\/sysctl.conf\nsudo sysctl -p\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat \/proc\/sys\/vm\/swappiness\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>10\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5220\u9664 Swap\uff08\u5982\u9700\u91cd\u5efa\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u5173\u95ed\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo swapoff \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5220\u9664\u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo rm \/swapfile\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f16\u8f91\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo nano \/etc\/fstab\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5220\u9664\u8fd9\u4e00\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/swapfile none swap sw 0 0\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u5b58\u9000\u51fa\u5373\u53ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u63a8\u8350\u914d\u7f6e<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7269\u7406\u5185\u5b58<\/th><th>\u63a8\u8350 Swap<\/th><\/tr><\/thead><tbody><tr><td>512MB<\/td><td>1~2GB<\/td><\/tr><tr><td>1GB<\/td><td>1~2GB<\/td><\/tr><tr><td>2GB<\/td><td>2GB<\/td><\/tr><tr><td>4GB<\/td><td>2~4GB<\/td><\/tr><tr><td>8GB+<\/td><td>2~8GB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4f60\u7684\u670d\u52a1\u5668\u914d\u7f6e<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u524d\u68c0\u6d4b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5185\u5b58\uff1a403MiB\nSwap\uff1a2GiB\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u914d\u7f6e\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x2705; \u5df2\u6210\u529f\u521b\u5efa 2GB Swap<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x2705; \u5df2\u542f\u7528 Swap<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x2705; \u9002\u5408 512MB VPS \u4f7f\u7528<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x2705; \u5efa\u8bae\u989d\u5916\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo 'vm.swappiness=10' | sudo tee -a \/etc\/sysctl.conf\nsudo sysctl -p\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u6837\u80fd\u591f\u51cf\u5c11\u5bf9 Swap \u7684\u4f9d\u8d56\uff0c\u63d0\u9ad8\u7cfb\u7edf\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ubuntu \/ Debian \u914d\u7f6e Swap \u5b8c\u6574\u6307\u5357 \u4ec0\u4e48\u662f Swap\uff1f Swap\uff08\u4ea4\u6362\u7a7a\u95f4\uff09\u662f\u786c\u76d8\u4e0a\u7684\u4e00 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/tcsm.info\/?p=717\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cUbuntu \/ Debian \u914d\u7f6e Swap \u5b8c\u6574\u6307\u5357\u201d<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-717","post","type-post","status-publish","format-standard","hentry","category-8"],"views":2,"_links":{"self":[{"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/posts\/717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tcsm.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=717"}],"version-history":[{"count":1,"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/posts\/717\/revisions"}],"predecessor-version":[{"id":718,"href":"https:\/\/tcsm.info\/index.php?rest_route=\/wp\/v2\/posts\/717\/revisions\/718"}],"wp:attachment":[{"href":"https:\/\/tcsm.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tcsm.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tcsm.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}