{"id":80425,"date":"2026-03-05T03:49:56","date_gmt":"2026-03-04T19:49:56","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/80425.html"},"modified":"2026-03-05T03:49:56","modified_gmt":"2026-03-04T19:49:56","slug":"ubuntu%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%86%85%e5%ad%98%e5%91%8a%e6%80%a5%ef%bc%9f5%e5%88%86%e9%92%9f%e6%90%9e%e5%ae%9aswap%e5%88%86%e5%8c%ba%e6%89%a9%e5%ae%b9%ef%bc%88%e9%99%84%e6%80%a7%e8%83%bd%e4%bc%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/80425.html","title":{"rendered":"Ubuntu\u670d\u52a1\u5668\u5185\u5b58\u544a\u6025\uff1f5\u5206\u949f\u641e\u5b9aSwap\u5206\u533a\u6269\u5bb9\uff08\u9644\u6027\u80fd\u4f18\u5316\u5c0f\u6280\u5de7\uff09"},"content":{"rendered":"<h2>Ubuntu\u670d\u52a1\u5668\u5185\u5b58\u544a\u6025\uff1f5\u5206\u949f\u641e\u5b9aSwap\u5206\u533a\u6269\u5bb9\uff08\u9644\u6027\u80fd\u4f18\u5316\u5c0f\u6280\u5de7\uff09<\/h2>\n<p>\u6700\u8fd1\u5728\u5e2e\u51e0\u4e2a\u521d\u521b\u56e2\u961f\u505a\u670d\u52a1\u5668\u8fd0\u7ef4\u652f\u6301\uff0c\u53d1\u73b0\u4e00\u4e2a\u633a\u666e\u904d\u7684\u73b0\u8c61\uff1a\u5f88\u591a\u5f00\u53d1\u8005\u670b\u53cb\u5728\u672c\u5730\u5f00\u53d1\u73af\u5883\u8dd1\u5f97\u597d\u597d\u7684\u5e94\u7528\uff0c\u4e00\u90e8\u7f72\u5230\u4e91\u670d\u52a1\u5668\u4e0a\uff0c\u5185\u5b58\u4f7f\u7528\u7387\u5c31\u76f4\u7ebf\u98d9\u5347\uff0c\u751a\u81f3\u76f4\u63a5\u628a\u8fdb\u7a0b\u7ed9\u201c\u6740\u201d\u4e86\u3002\u5c24\u5176\u662f\u5728\u8dd1MySQL\u3001Redis\u6216\u8005\u7528Docker\u90e8\u7f72\u4e86\u51e0\u4e2a\u5fae\u670d\u52a1\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u5185\u5b58\u66f4\u662f\u6349\u895f\u89c1\u8098\u3002\u8fd9\u65f6\u5019\uff0c\u4e00\u4e2a\u914d\u7f6e\u5f97\u5f53\u7684Swap\u5206\u533a\uff0c\u5f80\u5f80\u80fd\u6210\u4e3a\u6551\u6025\u7684\u201c\u7f13\u51b2\u57ab\u201d\uff0c\u7ed9\u7cfb\u7edf\u4e89\u53d6\u5230\u5b9d\u8d35\u7684\u53cd\u5e94\u65f6\u95f4\uff0c\u907f\u514d\u670d\u52a1\u76f4\u63a5\u5d29\u6e83\u3002<\/p>\n<p>Swap\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684\u865a\u62df\u5185\u5b58\u6216\u4ea4\u6362\u5206\u533a\uff0c\u5b83\u7684\u672c\u8d28\u662f\u5f53\u7269\u7406\u5185\u5b58\uff08RAM\uff09\u4e0d\u591f\u7528\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5c06\u4e00\u90e8\u5206\u6682\u65f6\u4e0d\u6d3b\u8dc3\u7684\u5185\u5b58\u6570\u636e\u201c\u4ea4\u6362\u201d\u5230\u786c\u76d8\u4e0a\uff0c\u817e\u51faRAM\u7a7a\u95f4\u7ed9\u66f4\u7d27\u6025\u7684\u4efb\u52a1\u4f7f\u7528\u3002\u867d\u7136\u786c\u76d8\u7684\u8bfb\u5199\u901f\u5ea6\u8fdc\u4e0d\u53ca\u5185\u5b58\uff0c\u4f46\u5728\u5185\u5b58\u7a81\u53d1\u6027\u4e0d\u8db3\u7684\u573a\u666f\u4e0b\uff0c\u5b83\u786e\u5b9e\u662f\u4e00\u9053\u6709\u6548\u7684\u5b89\u5168\u9632\u7ebf\u3002\u4eca\u5929\uff0c\u6211\u4eec\u5c31\u629b\u5f00\u90a3\u4e9b\u6559\u79d1\u4e66\u5f0f\u7684\u7406\u8bba\uff0c\u76f4\u63a5\u4ece\u5b9e\u6218\u51fa\u53d1\uff0c\u804a\u804a\u5728Ubuntu\u670d\u52a1\u5668\u4e0a\uff0c\u5982\u4f55\u5feb\u901f\u3001\u5b89\u5168\u5730\u6269\u5bb9Swap\uff0c\u5e76\u4e14\u6839\u636e\u4f60\u7684\u5b9e\u9645\u8d1f\u8f7d\uff0c\u628a\u5b83\u8c03\u6821\u5f97\u66f4\u9ad8\u6548\uff0c\u800c\u4e0d\u662f\u7b80\u5355\u5730\u4e00\u5f00\u4e86\u4e4b\u3002<\/p>\n<h3>1. \u7406\u89e3Swap\uff1a\u4e0d\u53ea\u662f\u201c\u5185\u5b58\u4e0d\u591f\u201d\u7684\u5907\u80ce<\/h3>\n<p>\u5728\u52a8\u624b\u4e4b\u524d\uff0c\u6211\u4eec\u5f97\u5148\u641e\u6e05\u695aSwap\u5728\u73b0\u4ee3\u670d\u52a1\u5668\u8fd0\u7ef4\u4e2d\u7684\u771f\u5b9e\u5b9a\u4f4d\u3002\u5f88\u591a\u4eba\u628a\u5b83\u89c6\u4e3a\u6027\u80fd\u6740\u624b\uff0c\u8ba4\u4e3a\u4e00\u65e6\u7528\u4e0aSwap\uff0c\u7cfb\u7edf\u5c31\u4f1a\u5361\u987f\u4e0d\u582a\u3002\u8fd9\u79cd\u89c2\u70b9\u5176\u5b9e\u6709\u4e9b\u7247\u9762\u3002Swap\u7684\u4f5c\u7528\u66f4\u50cf\u662f\u4e00\u4e2a\u7cfb\u7edf\u5185\u5b58\u538b\u529b\u7684\u201c\u6cc4\u538b\u9600\u201d\u3002<\/p>\n<p>Swap\u7684\u6838\u5fc3\u4ef7\u503c\u4f53\u73b0\u5728\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n<ul>\n<li>\u9632\u6b62OOM Killer\u8bef\u6740\uff1aLinux\u5185\u6838\u5728\u7269\u7406\u5185\u5b58\u8017\u5c3d\u65f6\uff0c\u4f1a\u542f\u52a8\u201cOut-Of-Memory Killer\u201d\u6765\u5f3a\u5236\u7ec8\u6b62\u8fdb\u7a0b\u4ee5\u91ca\u653e\u5185\u5b58\u3002\u6709\u4e86Swap\uff0c\u7cfb\u7edf\u5728\u89e6\u53d1OOM\u4e4b\u524d\uff0c\u5c31\u6709\u4e86\u4e00\u4e2a\u7f13\u51b2\u5730\u5e26\uff0c\u80fd\u6709\u6548\u907f\u514d\u5173\u952e\u670d\u52a1\uff08\u6bd4\u5982\u4f60\u7684\u6570\u636e\u5e93\uff09\u88ab\u610f\u5916\u7ec8\u6b62\u3002<\/li>\n<li>\u5bb9\u7eb3\u4e0d\u6d3b\u8dc3\u7684\u5185\u5b58\u9875\uff1a\u7cfb\u7edf\u4e2d\u6709\u5927\u91cf\u5185\u5b58\u662f\u88ab\u5206\u914d\u4e86\u4f46\u957f\u671f\u4e0d\u7528\u7684\uff08\u6bd4\u5982\u4e00\u4e9b\u5b88\u62a4\u8fdb\u7a0b\u521d\u59cb\u5316\u540e\u5360\u7528\u7684\u5185\u5b58\uff09\u3002\u628a\u8fd9\u4e9b\u201c\u51b7\u6570\u636e\u201d\u79fb\u5230Swap\uff0c\u53ef\u4ee5\u91ca\u653e\u51fa\u5b9d\u8d35\u7684\u7269\u7406\u5185\u5b58\u7ed9\u771f\u6b63\u6d3b\u8dc3\u7684\u8fdb\u7a0b\u4f7f\u7528\u3002<\/li>\n<li>\u652f\u6301\u4f11\u7720\uff08Hibernate\uff09\uff1a\u5bf9\u4e8e\u684c\u9762\u7cfb\u7edf\uff0c\u4f11\u7720\u529f\u80fd\u9700\u8981\u5c06\u5185\u5b58\u5b8c\u6574\u955c\u50cf\u4fdd\u5b58\u5230Swap\u3002\u670d\u52a1\u5668\u867d\u7136\u901a\u5e38\u4e0d\u4f11\u7720\uff0c\u4f46\u8fd9\u4e2a\u673a\u5236\u8bf4\u660e\u4e86Swap\u53ef\u4ee5\u5b58\u50a8\u5b8c\u6574\u7684\u5185\u5b58\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u5f53\u7136\uff0cSwap\u4e0d\u662f\u4e07\u80fd\u7684\u3002\u5b83\u7684\u6027\u80fd\u74f6\u9888\u5728\u4e8e\u78c1\u76d8IO\u3002\u4e00\u4e2a\u9891\u7e41\u8fdb\u884cSwap\u4ea4\u6362\uff08Swapping\uff09\u7684\u7cfb\u7edf\uff0c\u5176\u6027\u80fd\u5fc5\u7136\u4f1a\u53d7\u5230\u4e25\u91cd\u5f71\u54cd\uff0c\u6b64\u65f6\u771f\u6b63\u7684\u89e3\u51b3\u65b9\u6848\u662f\u589e\u52a0\u7269\u7406\u5185\u5b58\u6216\u4f18\u5316\u5e94\u7528\u5185\u5b58\u4f7f\u7528\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u7684\u76ee\u6807\u4e0d\u662f\u4f9d\u8d56Swap\uff0c\u800c\u662f\u5408\u7406\u914d\u7f6eSwap\uff0c\u8ba9\u5b83\u53ea\u5728\u5173\u952e\u65f6\u523b\u3001\u4ee5\u6700\u5c0f\u7684\u6027\u80fd\u4ee3\u4ef7\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n<h3>2. \u5feb\u901f\u8bca\u65ad\uff1a\u4f60\u7684\u670d\u52a1\u5668\u771f\u7684\u9700\u8981\u66f4\u591aSwap\u5417\uff1f<\/h3>\n<p>\u76f2\u76ee\u6269\u5bb9Swap\u53ef\u80fd\u9002\u5f97\u5176\u53cd\u3002\u6211\u4eec\u5148\u82b1\u4e00\u5206\u949f\uff0c\u7528\u51e0\u4e2a\u547d\u4ee4\u770b\u770b\u7cfb\u7edf\u7684\u771f\u5b9e\u5185\u5b58\u72b6\u51b5\u3002<\/p>\n<p>\u6253\u5f00\u4f60\u7684\u7ec8\u7aef\uff0c\u8fde\u63a5\u4e0a\u670d\u52a1\u5668\u3002\u7b2c\u4e00\u4e2a\u5fc5\u770b\u7684\u547d\u4ee4\u662f free -h\u3002-h \u53c2\u6570\u4f1a\u8ba9\u8f93\u51fa\u4ee5\u4eba\u7c7b\u6613\u8bfb\u7684\u5355\u4f4d\uff08G\u3001M\uff09\u663e\u793a\u3002<\/p>\n<p>free -h<\/p>\n<p>\u4f60\u4f1a\u770b\u5230\u7c7b\u4f3c\u4e0b\u9762\u7684\u8f93\u51fa\uff1a<\/p>\n<p>               total        used        free      shared  buff\/cache   available<br \/>\nMem:           3.9Gi       1.2Gi       1.5Gi        16Mi       1.1Gi       2.4Gi<br \/>\nSwap:          2.0Gi       0.0Gi       2.0Gi<\/p>\n<p>\u8fd9\u91cc\u9700\u8981\u5173\u6ce8\u51e0\u4e2a\u5173\u952e\u6570\u636e\uff1a<\/p>\n<ul>\n<li>available\uff1a\u8fd9\u4e2a\u503c\u6bd4 free \u66f4\u6709\u53c2\u8003\u610f\u4e49\uff0c\u5b83\u8868\u793a\u7cfb\u7edf\u4f30\u8ba1\u7684\u3001\u53ef\u4f9b\u542f\u52a8\u65b0\u5e94\u7528\u7a0b\u5e8f\u800c\u65e0\u9700\u4ea4\u6362\u7684\u5185\u5b58\u5927\u5c0f\u3002\u5982\u679c\u8fd9\u4e2a\u503c\u957f\u671f\u5f88\u4f4e\uff08\u6bd4\u5982\u5c0f\u4e8e\u603b\u5185\u5b58\u768410%\uff09\uff0c\u5c31\u9700\u8981\u8b66\u60d5\u3002<\/li>\n<li>Swap used\uff1aSwap\u7684\u4f7f\u7528\u91cf\u3002\u5982\u679c\u8fd9\u4e2a\u503c\u6301\u7eed\u5927\u4e8e0\uff0c\u5e76\u4e14\u8fd8\u5728\u7f13\u6162\u589e\u957f\uff0c\u8bf4\u660e\u7269\u7406\u5185\u5b58\u5df2\u7ecf\u4e0d\u591f\u7528\uff0c\u7cfb\u7edf\u5f00\u59cb\u52a8\u7528Swap\u4e86\u3002<\/li>\n<\/ul>\n<p>\u4f46 free \u547d\u4ee4\u770b\u7684\u662f\u77ac\u65f6\u72b6\u6001\u3002\u8981\u4e86\u89e3\u8d8b\u52bf\uff0c\u6211\u4eec\u9700\u8981 vmstat\u3002\u8fd0\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff0c\u6bcf\u96942\u79d2\u5237\u65b0\u4e00\u6b21\uff0c\u89c2\u5bdf si (swap in) \u548c so (swap out) \u4e24\u5217\u3002<\/p>\n<p>vmstat 2 5<\/p>\n<p>\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u91c7\u68375\u6b21\uff0c\u6bcf\u6b21\u95f4\u96942\u79d2\u3002\u5982\u679c si \u548c <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ubuntu\u670d\u52a1\u5668\u5185\u5b58\u544a\u6025\uff1f5\u5206\u949f\u641e\u5b9aSwap\u5206\u533a\u6269\u5bb9\uff08\u9644\u6027\u80fd\u4f18\u5316\u5c0f\u6280\u5de7\uff09<br \/>\n\u6700\u8fd1\u5728\u5e2e\u51e0\u4e2a\u521d\u521b\u56e2\u961f\u505a\u670d\u52a1\u5668\u8fd0\u7ef4\u652f\u6301\uff0c\u53d1\u73b0\u4e00\u4e2a\u633a\u666e\u904d\u7684\u73b0\u8c61\uff1a\u5f88\u591a\u5f00\u53d1\u8005\u670b\u53cb\u5728\u672c\u5730\u5f00\u53d1\u73af\u5883\u8dd1\u5f97\u597d\u597d\u7684\u5e94\u7528\uff0c\u4e00\u90e8\u7f72\u5230\u4e91\u670d\u52a1\u5668\u4e0a\uff0c\u5185\u5b58\u4f7f\u7528\u7387\u5c31\u76f4\u7ebf\u98d9\u5347\uff0c\u751a\u81f3\u76f4\u63a5\u628a\u8fdb\u7a0b\u7ed9\u201c\u6740\u201d\u4e86\u3002\u5c24\u5176\u662f\u5728\u8dd1MySQL\u3001Redis\u6216\u8005\u7528Docker\u90e8\u7f72\u4e86\u51e0\u4e2a\u5fae\u670d\u52a1\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u5185\u5b58\u66f4\u662f\u6349\u895f\u89c1\u8098\u3002\u8fd9\u65f6\u5019\uff0c\u4e00\u4e2a\u914d\u7f6e\u5f97\u5f53\u7684Swap\u5206\u533a\uff0c\u5f80\u5f80\u80fd\u6210\u4e3a\u6551\u6025\u7684\u201c\u7f13\u51b2\u57ab\u201d\uff0c\u7ed9\u7cfb\u7edf\u4e89\u53d6\u5230\u5b9d\u8d35\u7684\u53cd\u5e94\u65f6\u95f4\uff0c\u907f\u514d\u670d\u52a1\u76f4\u63a5\u5d29\u6e83\u3002<br 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