{"id":52209,"date":"2024-10-09T00:43:16","date_gmt":"2024-10-08T16:43:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/52209\/"},"modified":"2024-11-14T10:39:54","modified_gmt":"2024-11-14T02:39:54","slug":"ubuntu-%e4%b8%8a%e5%a2%9e%e5%8a%a0-swap-%e4%ba%a4%e6%8f%9b%e7%a9%ba%e9%96%93%e5%85%b7%e9%ab%94%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/52209\/","title":{"rendered":"Ubuntu \u4e0a\u589e\u52a0 swap \u4ea4\u63db\u7a7a\u9593\u5177\u9ad4\u65b9\u6cd5"},"content":{"rendered":"

Ubuntu \u4e0a\u589e\u52a0 Swap \u4ea4\u63db\u7a7a\u9593\u5177\u9ad4\u65b9\u6cd5<\/h1>\n

\u5728\u4f7f\u7528 Ubuntu \u7cfb\u7d71\u6642\uff0c\u7576\u7cfb\u7d71\u5167\u5b58\u4e0d\u8db3\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u6216\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\u3002\u70ba\u4e86\u6539\u5584\u9019\u7a2e\u60c5\u6cc1\uff0c\u589e\u52a0 Swap \u4ea4\u63db\u7a7a\u9593\u662f\u4e00\u500b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002Swap \u662f\u4e00\u7a2e\u5c07\u5167\u5b58\u6578\u64da\u66ab\u6642\u5b58\u5132\u5728\u786c\u789f\u4e0a\u7684\u6280\u8853\uff0c\u7576\u7269\u7406\u5167\u5b58\u4e0d\u8db3\u6642\uff0c\u7cfb\u7d71\u53ef\u4ee5\u4f7f\u7528 Swap \u7a7a\u9593\u4f86\u91cb\u653e\u5167\u5b58\u8cc7\u6e90\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5728 Ubuntu \u4e0a\u589e\u52a0 Swap \u4ea4\u63db\u7a7a\u9593\u7684\u5177\u9ad4\u65b9\u6cd5\u3002<\/p>\n

\u6aa2\u67e5\u7576\u524d\u7684 Swap \u7a7a\u9593<\/h2>\n

\u5728\u589e\u52a0 Swap \u7a7a\u9593\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u7576\u524d\u7cfb\u7d71\u7684 Swap \u4f7f\u7528\u60c5\u6cc1\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u7576\u524d\u7684 Swap \u7a7a\u9593\uff1a<\/p>\n

sudo swapon --show<\/code><\/pre>\n
\u5982\u679c\u6c92\u6709\u986f\u793a\u4efb\u4f55\u5167\u5bb9\uff0c\u5247\u8868\u793a\u7cfb\u7d71\u76ee\u524d\u6c92\u6709\u555f\u7528 Swap \u7a7a\u9593\u3002\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u5167\u5b58\u7684\u7e3d\u9ad4\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n
free -h<\/code><\/pre>\n
\u5275\u5efa Swap \u6587\u4ef6<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u5275\u5efa\u4e00\u500b\u65b0\u7684 Swap \u6587\u4ef6\u3002\u5047\u8a2d\u6211\u5011\u5e0c\u671b\u5275\u5efa\u4e00\u500b\u5927\u5c0f\u70ba 2GB \u7684 Swap \u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo fallocate -l 2G \/swapfile<\/code><\/pre>\n
\u5982\u679c\u60a8\u7684\u7cfb\u7d71\u4e0d\u652f\u6301 fallocate \u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 dd \u547d\u4ee4\u4f86\u5275\u5efa Swap \u6587\u4ef6\uff1a<\/p>\n
sudo dd if=\/dev\/zero of=\/swapfile bs=1G count=2<\/code><\/pre>\n
\u8a2d\u7f6e Swap \u6587\u4ef6\u7684\u6b0a\u9650<\/h2>\n
\u70ba\u4e86\u5b89\u5168\u8d77\u898b\uff0c\u60a8\u9700\u8981\u8a2d\u7f6e Swap \u6587\u4ef6\u7684\u6b0a\u9650\uff0c\u4ee5\u9632\u6b62\u975e\u7279\u6b0a\u7528\u6236\u8a2a\u554f\uff1a<\/p>\n
sudo chmod 600 \/swapfile<\/code><\/pre>\n
\u5c07\u6587\u4ef6\u8a2d\u7f6e\u70ba Swap \u7a7a\u9593<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c07\u5275\u5efa\u7684\u6587\u4ef6\u8a2d\u7f6e\u70ba Swap \u7a7a\u9593\uff1a<\/p>\n
sudo mkswap \/swapfile<\/code><\/pre>\n
\u555f\u7528 Swap \u7a7a\u9593<\/h2>\n
\u73fe\u5728\u53ef\u4ee5\u555f\u7528 Swap \u7a7a\u9593\u4e86\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo swapon \/swapfile<\/code><\/pre>\n
\u60a8\u53ef\u4ee5\u518d\u6b21\u4f7f\u7528 sudo swapon --show<\/code> \u547d\u4ee4\u4f86\u78ba\u8a8d Swap \u7a7a\u9593\u662f\u5426\u5df2\u6210\u529f\u555f\u7528\u3002<\/p>\n
\u4f7f Swap \u7a7a\u9593\u5728\u555f\u52d5\u6642\u81ea\u52d5\u52a0\u8f09<\/h2>\n
\u70ba\u4e86\u78ba\u4fdd\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c Swap \u7a7a\u9593\u4ecd\u7136\u53ef\u7528\uff0c\u60a8\u9700\u8981\u5c07\u5176\u6dfb\u52a0\u5230 \/etc\/fstab<\/code> \u6587\u4ef6\u4e2d\u3002\u4f7f\u7528\u6587\u672c\u7de8\u8f2f\u5668\u6253\u958b\u8a72\u6587\u4ef6\uff1a<\/p>\n
sudo nano \/etc\/fstab<\/code><\/pre>\n
\u5728\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n
\/swapfile none swap sw 0 0<\/code><\/pre>\n
\u8abf\u6574 Swap \u4f7f\u7528\u7b56\u7565\uff08\u53ef\u9078\uff09<\/h2>\n
Ubuntu \u7cfb\u7d71\u4e2d\uff0c\u60a8\u53ef\u4ee5\u8abf\u6574 Swap \u7684\u4f7f\u7528\u7b56\u7565\u3002\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u6703\u5728\u5167\u5b58\u4f7f\u7528\u7387\u9054\u5230\u4e00\u5b9a\u7a0b\u5ea6\u6642\u624d\u958b\u59cb\u4f7f\u7528 Swap\u3002\u60a8\u53ef\u4ee5\u901a\u904e\u8abf\u6574 swappiness<\/code> \u53c3\u6578\u4f86\u6539\u8b8a\u9019\u4e00\u884c\u70ba\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u7576\u524d\u7684 swappiness \u503c\uff1a<\/p>\n
cat \/proc\/sys\/vm\/swappiness<\/code><\/pre>\n
\u5982\u679c\u60a8\u5e0c\u671b\u589e\u52a0 Swap \u7684\u4f7f\u7528\u983b\u7387\uff0c\u53ef\u4ee5\u5c07 swappiness \u503c\u8a2d\u7f6e\u70ba\u66f4\u9ad8\u7684\u6578\u5b57\uff08\u7bc4\u570d\u662f 0 \u5230 100\uff09\u3002\u4f8b\u5982\uff0c\u5c07\u5176\u8a2d\u7f6e\u70ba 10\uff1a<\/p>\n
sudo sysctl vm.swappiness=10<\/code><\/pre>\n
\u8981\u4f7f\u9019\u4e00\u66f4\u6539\u5728\u91cd\u555f\u5f8c\u4ecd\u7136\u6709\u6548\uff0c\u60a8\u53ef\u4ee5\u7de8\u8f2f \/etc\/sysctl.conf<\/code> \u6587\u4ef6\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n
vm.swappiness=10<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u589e\u52a0 Swap \u4ea4\u63db\u7a7a\u9593\u662f\u4e00\u500b\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e6b\u52a9\u6539\u5584 Ubuntu \u7cfb\u7d71\u7684\u6027\u80fd\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5275\u5efa\u548c\u914d\u7f6e Swap \u6587\u4ef6\uff0c\u4e26\u6839\u64da\u9700\u8981\u8abf\u6574\u5176\u4f7f\u7528\u7b56\u7565\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728 Ubuntu \u4e0a\u589e\u52a0 swap \u4ea4\u63db\u7a7a\u9593\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u7c21\u55ae\u6b65\u9a5f\u8f15\u9b06\u5b8c\u6210\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-52209","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52209","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=52209"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52209\/revisions"}],"predecessor-version":[{"id":52210,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52209\/revisions\/52210"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=52209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=52209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=52209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}