{"id":70234,"date":"2026-08-04T08:00:12","date_gmt":"2026-08-04T00:00:12","guid":{"rendered":"https:\/\/www.dataplugs.com\/?p=70234"},"modified":"2026-08-03T15:09:16","modified_gmt":"2026-08-03T07:09:16","slug":"optimize-swap-memory-servers","status":"publish","type":"post","link":"https:\/\/www.dataplugs.com\/tc\/optimize-swap-memory-servers\/","title":{"rendered":"\u5982\u4f55\u5728\u9ad8\u8a18\u61b6\u9ad4\u9700\u6c42\u4f3a\u670d\u5668\u4e0a\u6700\u4f73\u5316 Swap \u8a2d\u5b9a\uff1f"},"content":{"rendered":"<div class=\"section-blog-2025\">\n\u7576\u4e00\u53f0\u9ad8\u8a18\u61b6\u9ad4\u8ca0\u8f09\u7684\u4f3a\u670d\u5668\u958b\u59cb\u8b8a\u6162\u6642\uff0c\u554f\u984c\u901a\u5e38\u4e0d\u53ea\u662f\u5be6\u9ad4\u8a18\u61b6\u9ad4\u7e3d\u91cf\u4e0d\u8db3\uff0c\u66f4\u95dc\u9375\u7684\u662f Linux \u5728\u5be6\u969b\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u5982\u4f55\u5e73\u8861 RAM\u3001Swap\u3001\u5feb\u53d6\u8207\u78c1\u789f I\/O \u4e4b\u9593\u7684\u8cc7\u6e90\u5206\u914d\u3002\u5373\u4f7f\u7cfb\u7d71\u986f\u793a\u4ecd\u6709\u53ef\u7528\u8a18\u61b6\u9ad4\uff0c\u6548\u80fd\u4ecd\u53ef\u80fd\u4e0b\u964d\u3001\u7a0b\u5e8f\u958b\u59cb\u505c\u9813\uff0c\u800c\u80cc\u666f\u4e2d\u7684 Swap \u6d3b\u52d5\u4e5f\u53ef\u80fd\u9010\u6b65\u589e\u52a0\u3002\u9019\u6b63\u662f\u70ba\u4ec0\u9ebc Swap \u8abf\u6821\u5982\u6b64\u91cd\u8981\u3002\u76ee\u6a19\u4e0d\u662f\u5b8c\u5168\u505c\u7528 Swap\uff0c\u800c\u662f\u78ba\u4fdd\u5b83\u80fd\u5e6b\u52a9\u7cfb\u7d71\u7dad\u6301\u7a69\u5b9a\uff0c\u800c\u4e0d\u662f\u628a\u8a18\u61b6\u9ad4\u58d3\u529b\u9032\u4e00\u6b65\u653e\u5927\u6210\u5ef6\u9072\u3001\u5132\u5b58\u74f6\u9838\uff0c\u751a\u81f3\u539f\u672c\u53ef\u907f\u514d\u7684\u670d\u52d9\u4e2d\u65b7\u3002<\/p>\n<h2><strong>Swap \u6700\u4f73\u5316\u771f\u6b63\u4ee3\u8868\u4ec0\u9ebc\uff1f<\/strong><\/h2>\n<p>Swap \u662f\u4e00\u7a2e\u4ee5\u78c1\u789f\u7a7a\u9593\u4f5c\u70ba\u5ef6\u4f38\u7684\u865b\u64ec\u8a18\u61b6\u9ad4\u6a5f\u5236\u3002\u7576 Linux \u5224\u65b7\u67d0\u4e9b\u8a18\u61b6\u9ad4\u9801\u9762\u66ab\u6642\u4e0d\u9700\u8981\u4fdd\u7559\u5728 RAM \u4e2d\u6642\uff0c\u5c31\u6703\u5c07\u5b83\u5011\u79fb\u5230 Swap\u3002\u5c0d\u7e41\u5fd9\u7684\u4f3a\u670d\u5668\u4f86\u8aaa\uff0c\u9019\u6709\u52a9\u65bc\u628a RAM \u512a\u5148\u7559\u7d66\u6d3b\u8e8d\u4e2d\u7684\u7a0b\u5e8f\u8207\u6a94\u6848\u7cfb\u7d71\u5feb\u53d6\u3002\u9019\u7a2e\u884c\u70ba\u672c\u8eab\u4e26\u4e0d\u7570\u5e38\u3002<\/p>\n<p>\u771f\u6b63\u7684\u554f\u984c\u5728\u65bc\uff0c\u7576 Swap \u6d3b\u52d5\u8b8a\u5f97\u904e\u65bc\u983b\u7e41\u6642\uff0c\u4f3a\u670d\u5668\u6703\u82b1\u8cbb\u904e\u591a\u6642\u9593\u5728 RAM \u8207\u5132\u5b58\u88dd\u7f6e\u4e4b\u9593\u642c\u79fb\u8a18\u61b6\u9ad4\u9801\u9762\uff0c\u9032\u800c\u9020\u6210\u56de\u61c9\u901f\u5ea6\u8b8a\u6162\u3001I\/O \u8ca0\u64d4\u52a0\u91cd\uff0c\u6700\u7d42\u5f71\u97ff\u6574\u9ad4\u670d\u52d9\u6548\u80fd\u3002<\/p>\n<p>\u5c0d\u9ad8\u8a18\u61b6\u9ad4\u9700\u6c42\u7684\u5de5\u4f5c\u8ca0\u8f09\u800c\u8a00\uff0cSwap \u6700\u4f73\u5316\u7684\u6838\u5fc3\uff0c\u5728\u65bc\u63a7\u5236\u6838\u5fc3\u4f7f\u7528 Swap \u7684\u7a4d\u6975\u7a0b\u5ea6\u3001\u8a2d\u5b9a\u9069\u7576\u7684 Swap \u5bb9\u91cf\uff0c\u4ee5\u53ca\u7576\u8a18\u61b6\u9ad4\u58d3\u529b\u5347\u9ad8\u6642\uff0c\u8b93\u4f3a\u670d\u5668\u4ee5\u66f4\u7a69\u5b9a\u7684\u65b9\u5f0f\u56de\u61c9\u3002\u9019\u985e\u8abf\u6574\u5c0d\u8cc7\u6599\u5eab\u4f3a\u670d\u5668\u3001PHP-FPM \u884c\u7a0b\u6c60\u3001\u5206\u6790\u578b\u5de5\u4f5c\u3001\u641c\u5c0b\u670d\u52d9\uff0c\u4ee5\u53ca\u9ad8\u6d41\u91cf\u61c9\u7528\u4f3a\u670d\u5668\u5c24\u5176\u91cd\u8981\u3002<\/p>\n<h2><strong>\u70ba\u4ec0\u9ebc\u5728\u9084\u6709\u53ef\u7528 RAM \u7684\u60c5\u6cc1\u4e0b\u4ecd\u7136\u6703\u4f7f\u7528 Swap\uff1f<\/strong><\/h2>\n<p>\u5f88\u591a\u7cfb\u7d71\u7ba1\u7406\u8005\u6703\u4ee5\u70ba\uff0c\u53ea\u6709\u5728 RAM \u5373\u5c07\u8017\u76e1\u6642\uff0cLinux \u624d\u61c9\u8a72\u958b\u59cb\u4f7f\u7528 Swap\u3002\u5be6\u969b\u4e0a\u4e26\u4e0d\u662f\u9019\u6a23\u3002Linux \u6838\u5fc3\u53ef\u80fd\u6703\u4e3b\u52d5\u628a\u8f03\u5c11\u4f7f\u7528\u7684\u533f\u540d\u8a18\u61b6\u9ad4\u79fb\u5230 Swap\uff0c\u85c9\u6b64\u9a30\u51fa\u66f4\u591a RAM \u7d66\u6d3b\u8e8d\u5de5\u4f5c\u8ca0\u8f09\u8207\u9801\u9762\u5feb\u53d6\u4f7f\u7528\u3002\u63db\u53e5\u8a71\u8aaa\uff0c\u51fa\u73fe\u4e00\u5b9a\u7a0b\u5ea6\u7684 Swap \u4f7f\u7528\u91cf\uff0c\u672c\u8eab\u4e26\u4e0d\u4ee3\u8868\u7cfb\u7d71\u7570\u5e38\uff0c\u53cd\u800c\u53ef\u80fd\u662f\u6b63\u5e38\u7684\u8a18\u61b6\u9ad4\u7ba1\u7406\u7b56\u7565\u3002<\/p>\n<p>\u771f\u6b63\u9700\u8981\u7559\u610f\u7684\uff0c\u662f\u7cfb\u7d71\u662f\u5426\u6301\u7e8c\u9032\u884c Swap in \u8207 Swap out\u3002Swap \u4f7f\u7528\u91cf\u7a69\u5b9a\u901a\u5e38\u554f\u984c\u4e0d\u5927\uff0c\u4f46\u5982\u679c Swap \u6d3b\u52d5\u983b\u7e41\u4e14\u53cd\u8986\u767c\u751f\uff0c\u5f80\u5f80\u5c31\u662f\u6548\u80fd\u958b\u59cb\u4e0b\u6ed1\u7684\u8a0a\u865f\u3002<\/p>\n<h2><strong>\u5982\u4f55\u5224\u65b7 Swap \u662f\u5426\u5df2\u7d93\u6210\u70ba\u6548\u80fd\u554f\u984c\uff1f<\/strong><\/h2>\n<p>\u5efa\u8b70\u5148\u9032\u884c\u57fa\u672c\u6aa2\u67e5\uff1a<\/p>\n<p>bash<\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">free -h<\/span><\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">swapon &#8211;show<\/span><\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">vmstat 1 5<\/span><\/p>\n<p><span style=\"color: #008000;\">free -h<\/span> \u53ef\u7528\u4f86\u67e5\u770b\u6574\u9ad4 RAM \u8207 Swap \u7684\u4f7f\u7528\u60c5\u6cc1\u3002<br \/>\n<span style=\"color: #008000;\">swapon &#8211;show<\/span> \u53ef\u78ba\u8a8d\u76ee\u524d\u555f\u7528\u7684 Swap \u88dd\u7f6e\u6216 Swap \u6a94\u6848\u3002<br \/>\n<span style=\"color: #008000;\">vmstat 1 5<\/span> \u5247\u80fd\u63d0\u4f9b\u66f4\u6709\u50f9\u503c\u7684\u52d5\u614b\u8cc7\u8a0a\u3002<\/p>\n<p>\u5176\u4e2d\u6700\u503c\u5f97\u89c0\u5bdf\u7684\u662f <span style=\"color: #008000;\">si<\/span> \u8207 <span style=\"color: #008000;\">so<\/span> \u6b04\u4f4d\uff0c\u4e5f\u5c31\u662f Swap in \u8207 Swap out\u3002\u5982\u679c\u5728\u6b63\u5e38\u8ca0\u8f09\u4e0b\u9019\u5169\u500b\u6578\u503c\u4ecd\u6301\u7e8c\u589e\u52a0\uff0c\u5c31\u4ee3\u8868\u7cfb\u7d71\u6b63\u627f\u53d7\u8a18\u61b6\u9ad4\u58d3\u529b\uff0c\u4e26\u53ef\u80fd\u9010\u6b65\u9032\u5165\u61c9\u7528\u56de\u61c9\u8b8a\u6162\u7684\u72c0\u614b\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> Swap \u4f7f\u7528\u91cf\u9ad8\u4e0d\u4e00\u5b9a\u662f\u554f\u984c\uff0c\u771f\u6b63\u503c\u5f97\u8b66\u89ba\u7684\u901a\u5e38\u662f Swap \u6d3b\u52d5\u904e\u65bc\u983b\u7e41\u3002<\/p>\n<h2><strong>\u8a2d\u5b9a\u5408\u9069\u7684 Swap \u5bb9\u91cf<\/strong><\/h2>\n<p>\u5408\u7406\u7684 Swap \u5bb9\u91cf\u80fd\u70ba Linux \u63d0\u4f9b\u5fc5\u8981\u7684\u7de9\u885d\u7a7a\u9593\uff0c\u540c\u6642\u907f\u514d\u4f3a\u670d\u5668\u5728\u771f\u6b63\u767c\u751f\u8a18\u61b6\u9ad4\u4e0d\u8db3\u4e4b\u524d\uff0c\u9577\u6642\u9593\u9677\u5165\u6548\u80fd\u7de9\u6162\u60e1\u5316\u7684\u60c5\u6cc1\u3002\u5f88\u591a\u60c5\u6cc1\u4e0b\uff0c\u8f03\u5c0f\u578b\u7684\u7cfb\u7d71\u9069\u5408\u914d\u7f6e\u8207 RAM \u76f8\u8fd1\u7684 Swap\uff0c\u800c\u7576\u5be6\u9ad4\u8a18\u61b6\u9ad4\u8d85\u904e 8GB \u6642\uff0c\u5e38\u898b\u505a\u6cd5\u662f\u5efa\u7acb\u4f8b\u5982 4GB \u7684\u4e2d\u7b49\u5bb9\u91cf Swap \u6a94\u6848\u3002<\/p>\n<p>\u5982\u679c\u7cfb\u7d71\u4e0d\u9700\u8981\u4f11\u7720\u529f\u80fd\uff0c\u751f\u7522\u74b0\u5883\u7684\u4f3a\u670d\u5668\u901a\u5e38\u6c92\u6709\u5fc5\u8981\u914d\u7f6e\u904e\u5927\u7684 Swap \u7a7a\u9593\u3002\u56e0\u70ba\u904e\u5927\u7684 Swap \u6709\u6642\u53ea\u6703\u8b93\u7cfb\u7d71\u5728\u8cc7\u6e90\u4e0d\u8db3\u6642\u62d6\u5f97\u66f4\u4e45\uff0c\u800c\u4e0d\u662f\u771f\u6b63\u6539\u5584\u6548\u80fd\u3002<\/p>\n<p>\u5728\u73fe\u4ee3 Linux \u7cfb\u7d71\u4e2d\uff0cSwap \u6a94\u6848\u901a\u5e38\u6bd4\u7368\u7acb\u7684 Swap \u5206\u5272\u5340\u66f4\u53d7\u6b61\u8fce\uff0c\u539f\u56e0\u662f\u5b83\u66f4\u5bb9\u6613\u8abf\u6574\u5927\u5c0f\uff0c\u4e5f\u66f4\u65b9\u4fbf\u65e5\u5f8c\u7ba1\u7406\u3002<\/p>\n<h2><strong>\u91dd\u5c0d\u6b63\u5f0f\u74b0\u5883\u5de5\u4f5c\u8ca0\u8f09\u8abf\u6574 swappiness<\/strong><\/h2>\n<p><span style=\"color: #008000;\">swappiness<\/span> \u7528\u4f86\u63a7\u5236 Linux \u5728\u4f7f\u7528 Swap \u8207\u56de\u6536\u5feb\u53d6\u4e4b\u9593\u7684\u50be\u5411\u3002\u9810\u8a2d\u503c 60 \u5c0d\u5ef6\u9072\u654f\u611f\u7684\u4f3a\u670d\u5668\u4f86\u8aaa\u901a\u5e38\u504f\u9ad8\u3002\u5c0d\u9ad8\u8a18\u61b6\u9ad4\u9700\u6c42\u7684\u61c9\u7528\u4f3a\u670d\u5668\u8207\u8cc7\u6599\u5eab\u4f3a\u670d\u5668\u800c\u8a00\uff0c\u8f03\u4f4e\u7684\u8a2d\u5b9a\u901a\u5e38\u66f4\u5408\u9069\u3002<\/p>\n<p>\u4e00\u500b\u5e38\u898b\u800c\u5be6\u7528\u7684\u8d77\u59cb\u503c\u662f\uff1a<\/p>\n<p>bash<\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">sudo sysctl vm.swappiness=10<\/span><\/p>\n<p>\u82e5\u8981\u6c38\u4e45\u751f\u6548\uff0c\u53ef\u5728\u7cfb\u7d71\u8a2d\u5b9a\u6a94\u4e2d\u52a0\u5165\uff1a<\/p>\n<p>bash<\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">vm.swappiness=10<\/span><\/p>\n<p>\u5c0d\u6975\u5ea6\u91cd\u8996\u5ef6\u9072\u8868\u73fe\u7684\u74b0\u5883\uff0c\u4e5f\u53ef\u4ee5\u9032\u4e00\u6b65\u6e2c\u8a66 1\u3002\u8f03\u4f4e\u7684\u6578\u503c\u53ef\u4ee5\u964d\u4f4e\u6d3b\u8e8d\u61c9\u7528\u8a18\u61b6\u9ad4\u904e\u65e9\u88ab\u79fb\u5165\u8f03\u6162 Swap \u7684\u6a5f\u7387\uff0c\u4f46\u9019\u4e0d\u4ee3\u8868 Linux \u6703\u5b8c\u5168\u505c\u6b62\u4f7f\u7528 Swap\u3002<\/p>\n<h2><strong>\u8abf\u6574\u5feb\u53d6\u58d3\u529b\u8207\u56de\u5beb\u884c\u70ba<\/strong><\/h2>\n<p>\u9664\u4e86 <span style=\"color: #008000;\">swappiness<\/span> \u4e4b\u5916\uff0c\u53e6\u5916\u5169\u985e\u8a2d\u5b9a\u5c0d\u8a18\u61b6\u9ad4\u6548\u80fd\u4e5f\u6709\u660e\u986f\u5f71\u97ff\u3002<span style=\"color: #008000;\">vm.vfs_cache_pressure<\/span> \u7528\u4f86\u63a7\u5236 Linux \u56de\u6536\u6a94\u6848\u7cfb\u7d71\u4e2d\u7e7c\u8cc7\u6599\u5feb\u53d6\u7684\u7a4d\u6975\u7a0b\u5ea6\uff0c\u800c <span style=\"color: #008000;\">vm.dirty_ratio<\/span> \u8207\u76f8\u95dc\u53c3\u6578\uff0c\u5247\u6703\u5f71\u97ff\u672a\u5beb\u56de\u8cc7\u6599\u53ef\u4ee5\u5728 RAM \u4e2d\u7d2f\u7a4d\u5230\u4ec0\u9ebc\u7a0b\u5ea6\uff0c\u624d\u958b\u59cb\u9032\u884c\u8cc7\u6599\u56de\u5beb\u3002<\/p>\n<p>\u4e00\u7d44\u76f8\u5c0d\u5e73\u8861\u7684\u57fa\u6e96\u8a2d\u5b9a\u901a\u5e38\u5982\u4e0b\uff1a<\/p>\n<p>bash<\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">vm.vfs_cache_pressure=50<\/span><\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">vm.dirty_ratio=15<\/span><\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">vm.dirty_background_ratio=5<\/span><\/p>\n<p>\u9019\u4e9b\u8a2d\u5b9a\u6709\u52a9\u65bc\u6838\u5fc3\u5728\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u4e0b\uff0c\u66f4\u7a69\u5b9a\u5730\u5e73\u8861\u5feb\u53d6\u4fdd\u7559\u8207\u78c1\u789f\u5beb\u5165\u884c\u70ba\uff0c\u7279\u5225\u9069\u5408\u57f7\u884c\u7db2\u7ad9\u61c9\u7528\u3001\u8cc7\u6599\u5eab\uff0c\u4ee5\u53ca\u9ad8\u5132\u5b58 I\/O \u6d3b\u52d5\u670d\u52d9\u7684\u4f3a\u670d\u5668\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> \u5982\u679c\u7cfb\u7d71\u5728\u5927\u91cf\u5beb\u5165\u671f\u9593\u51fa\u73fe\u6548\u80fd\u4e0b\u6ed1\uff0c\u9664\u4e86\u89c0\u5bdf Swap \u884c\u70ba\uff0c\u4e5f\u61c9\u4e00\u4f75\u6aa2\u67e5 dirty page \u76f8\u95dc\u8a2d\u5b9a\u3002<\/p>\n<h2><strong>\u6aa2\u67e5 Transparent Huge Pages \u8207 zram<\/strong><\/h2>\n<p>Transparent Huge Pages\uff08\u900f\u660e\u5927\u9801\u8a18\u61b6\u9ad4\uff09\u5c0d\u67d0\u4e9b\u5de5\u4f5c\u8ca0\u8f09\u53ef\u80fd\u6709\u5e6b\u52a9\uff0c\u4f46\u5c0d\u4e0d\u5c11\u8cc7\u6599\u5eab\u4f86\u8aaa\uff0c\u505c\u7528\u5f8c\u53cd\u800c\u80fd\u5e36\u4f86\u66f4\u7a69\u5b9a\u7684\u8868\u73fe\uff0c\u56e0\u70ba\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7531\u8a18\u61b6\u9ad4\u788e\u7247\u9020\u6210\u7684\u5ef6\u9072\u5c16\u5cf0\u3002\u9019\u9805\u8abf\u6574\u4e0d\u61c9\u4e00\u6982\u800c\u8ad6\uff0c\u800c\u61c9\u6839\u64da\u5be6\u969b\u5de5\u4f5c\u8ca0\u8f09\u9032\u884c\u6e2c\u8a66\u3002<\/p>\n<p>\u53e6\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u9078\u9805\u662f zram\u3002zram \u6703\u5728 RAM \u4e2d\u5efa\u7acb\u58d3\u7e2e\u578b\u7684 Swap \u7a7a\u9593\uff0c\u901f\u5ea6\u901a\u5e38\u6bd4\u78c1\u789f\u578b Swap \u5feb\u5f97\u591a\u3002\u5c0d\u65bc\u6703\u51fa\u73fe\u7a81\u767c\u8a18\u61b6\u9ad4\u9700\u6c42\u7684\u7cfb\u7d71\u4f86\u8aaa\uff0czram \u53ef\u4ee5\u5148\u5438\u6536\u77ed\u66ab\u5c16\u5cf0\uff0c\u964d\u4f4e\u4f3a\u670d\u5668\u904e\u65e9\u4f9d\u8cf4\u8f03\u6162\u5132\u5b58\u88dd\u7f6e\u7684\u6a5f\u7387\u3002<\/p>\n<h2><strong>\u6aa2\u67e5\u54ea\u4e9b\u7a0b\u5e8f\u6b63\u5728\u9020\u6210\u8a18\u61b6\u9ad4\u58d3\u529b<\/strong><\/h2>\n<p>\u5982\u679c Swap \u4f7f\u7528\u91cf\u6301\u7e8c\u589e\u52a0\uff0c\u4e0b\u4e00\u6b65\u4e0d\u61c9\u53ea\u662f\u6301\u7e8c\u8abf\u6574\u6838\u5fc3\u53c3\u6578\uff0c\u800c\u662f\u627e\u51fa\u771f\u6b63\u6d88\u8017\u8a18\u61b6\u9ad4\u7684\u670d\u52d9\u6216\u7a0b\u5e8f\u3002<\/p>\n<p>\u5e38\u7528\u6307\u4ee4\u5305\u62ec\uff1a<\/p>\n<p>bash<\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">ps aux &#8211;sort=-%mem | head -6<\/span><\/p>\n<p><span style=\"color: #ffffff; background-color: #000000;\">smem -tp<\/span><\/p>\n<p>\u9019\u985e\u6aa2\u67e5\u5f80\u5f80\u80fd\u627e\u51fa\u4e00\u4e9b\u5178\u578b\u554f\u984c\uff0c\u4f8b\u5982 PHP-FPM \u884c\u7a0b\u6c60\u8a2d\u5b9a\u904e\u5927\u3001MySQL \u8a18\u61b6\u9ad4\u5206\u914d\u904e\u9ad8\u3001Elasticsearch \u8a18\u61b6\u9ad4\u81a8\u8139\uff0c\u6216\u61c9\u7528\u7a0b\u5f0f\u7684\u5de5\u4f5c\u7a0b\u5e8f\u6578\u91cf\u672c\u8eab\u5c31\u8d85\u51fa\u73fe\u6709 RAM \u53ef\u627f\u53d7\u7684\u7bc4\u570d\u3002<\/p>\n<p>\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0cSwap \u8abf\u6821\u6216\u8a31\u80fd\u6539\u5584\u8868\u9762\u75c7\u72c0\uff0c\u4f46\u771f\u6b63\u7684\u89e3\u6cd5\u4ecd\u7136\u662f\u670d\u52d9\u5c64\u7d1a\u7684\u6700\u4f73\u5316\u8207\u8cc7\u6e90\u898f\u5283\u3002<\/p>\n<h2><strong>\u907f\u514d OOM \u767c\u751f\u6642\u9020\u6210\u66f4\u56b4\u91cd\u7684\u5f8c\u679c<\/strong><\/h2>\n<p>\u7576\u8a18\u61b6\u9ad4\u5fb9\u5e95\u8017\u76e1\u6642\uff0cLinux \u7684 OOM Killer \u6703\u6c7a\u5b9a\u7d42\u6b62\u54ea\u500b\u7a0b\u5e8f\u3002\u5c0d\u6b63\u5f0f\u74b0\u5883\u4f3a\u670d\u5668\u4f86\u8aaa\uff0c\u9069\u5ea6\u8abf\u6574\u7a0b\u5e8f\u7684 OOM \u512a\u5148\u9806\u5e8f\u662f\u503c\u5f97\u8003\u616e\u7684\u505a\u6cd5\uff0c\u9019\u6a23\u50cf SSH \u6216\u95dc\u9375\u7cfb\u7d71\u670d\u52d9\u5c31\u4e0d\u6703\u6210\u70ba\u6700\u5148\u88ab\u7d42\u6b62\u7684\u5c0d\u8c61\u3002<\/p>\n<p>\u9019\u7576\u7136\u7121\u6cd5\u53d6\u4ee3\u6b63\u78ba\u7684\u5bb9\u91cf\u898f\u5283\uff0c\u4f46\u5728\u767c\u751f\u8a18\u61b6\u9ad4\u4e8b\u4ef6\u6642\uff0c\u78ba\u5be6\u53ef\u4ee5\u964d\u4f4e\u7cfb\u7d71\u6574\u9ad4\u5931\u53bb\u53ef\u7ba1\u7406\u6027\u7684\u98a8\u96aa\u3002<\/p>\n<h2><strong>\u76e3\u63a7\u91cd\u9ede\u61c9\u653e\u5728\u58d3\u529b\uff0c\u800c\u4e0d\u53ea\u662f\u8a18\u61b6\u9ad4\u7e3d\u91cf<\/strong><\/h2>\n<p>\u6700\u5e38\u898b\u7684\u932f\u8aa4\u4e4b\u4e00\uff0c\u5c31\u662f\u53ea\u770b\u5269\u9918 RAM \u6216\u7e3d Swap \u4f7f\u7528\u91cf\u3002\u8a18\u61b6\u9ad4\u58d3\u529b\u5fc5\u9808\u653e\u5728\u6574\u9ad4\u7cfb\u7d71\u60c5\u5883\u4e2d\u4e00\u8d77\u5224\u65b7\u3002\u4f60\u61c9\u540c\u6642\u76e3\u63a7 Swap I\/O\u3001\u78c1\u789f\u5ef6\u9072\u3001\u61c9\u7528\u56de\u61c9\u6642\u9593\u3001\u4e3b\u8981\u8a18\u61b6\u9ad4\u6d88\u8017\u7a0b\u5e8f\uff0c\u4ee5\u53ca OOM \u4e8b\u4ef6\uff0c\u624d\u80fd\u66f4\u6e96\u78ba\u5224\u65b7\u4f3a\u670d\u5668\u5728\u9ad8\u5cf0\u8ca0\u8f09\u4e0b\u662f\u5426\u771f\u6b63\u5065\u5eb7\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> \u5982\u679c Swap \u6d3b\u52d5\u8207\u78c1\u789f\u5ef6\u9072\u540c\u6642\u4e0a\u5347\uff0c\u901a\u5e38\u61c9\u8996\u70ba\u57fa\u790e\u67b6\u69cb\u5c64\u9762\u7684\u8b66\u8a0a\uff0c\u800c\u4e0d\u53ea\u662f\u55ae\u7d14\u7684\u8a18\u61b6\u9ad4\u53c3\u6578\u554f\u984c\u3002<\/p>\n<h2><strong>\u7576\u8abf\u6821\u5df2\u7d93\u4e0d\u8db3\u4ee5\u89e3\u6c7a\u554f\u984c\u6642<\/strong><\/h2>\n<p>Swap \u8abf\u6821\u80fd\u8655\u7406\u7684\u554f\u984c\u5176\u5be6\u6709\u9650\u3002\u5982\u679c\u5728\u8abf\u6574 <span style=\"color: #008000;\">swappiness<\/span> \u8207\u8a18\u61b6\u9ad4\u7b56\u7565\u4e4b\u5f8c\uff0c\u4f3a\u670d\u5668\u4ecd\u6301\u7e8c\u51fa\u73fe\u983b\u7e41\u7684 Swap in\u3001Swap out\u3001\u9ad8\u5ef6\u9072\u8207\u5de5\u4f5c\u8ca0\u8f09\u505c\u6eef\uff0c\u90a3\u9ebc\u554f\u984c\u901a\u5e38\u66f4\u6df1\u5c64\u3002\u53ef\u80fd\u662f\u5de5\u4f5c\u8ca0\u8f09\u672c\u8eab\u9700\u8981\u66f4\u591a RAM\u3001\u5de5\u4f5c\u7a0b\u5e8f\u6578\u91cf\u904e\u591a\u3001\u61c9\u7528\u7a0b\u5f0f\u6548\u7387\u4e0d\u8db3\uff0c\u6216\u5132\u5b58\u88dd\u7f6e\u6548\u80fd\u7121\u6cd5\u8ddf\u4e0a\u9700\u6c42\u3002<\/p>\n<p>\u5c0d\u6b63\u5f0f\u904b\u884c\u7684\u7cfb\u7d71\u4f86\u8aaa\uff0c\u8abf\u6821\u7684\u76ee\u7684\u662f\u6539\u5584\u7cfb\u7d71\u884c\u70ba\uff0c\u800c\u4e0d\u662f\u63a9\u84cb\u4f3a\u670d\u5668\u898f\u683c\u5df2\u7d93\u4e0d\u8db3\u7684\u4e8b\u5be6\u3002<\/p>\n<h2><strong>\u7d50\u8ad6<\/strong><\/h2>\n<p>\u8981\u5728\u9ad8\u8a18\u61b6\u9ad4\u9700\u6c42\u4f3a\u670d\u5668\u4e0a\u6700\u4f73\u5316 Swap \u8a2d\u5b9a\uff0c\u91cd\u9ede\u5728\u65bc\u8b93 Linux \u5728\u627f\u53d7\u58d3\u529b\u6642\u4ecd\u80fd\u7dad\u6301\u7a69\u5b9a\u56de\u61c9\uff0c\u800c\u4e0d\u662f\u5f37\u8feb\u7cfb\u7d71\u5b8c\u5168\u4e0d\u4f7f\u7528 Swap\u3002\u6b63\u78ba\u505a\u6cd5\u662f\u89c0\u5bdf\u771f\u5be6\u7684 Swap \u6d3b\u52d5\uff0c\u9069\u5ea6\u8abf\u6574 <span style=\"color: #008000;\">swappiness<\/span> \u8207\u5feb\u53d6\u884c\u70ba\uff0c\u8a55\u4f30 Transparent Huge Pages \u8207 zram \u7b49\u8f14\u52a9\u6a5f\u5236\uff0c\u4e26\u627e\u51fa\u771f\u6b63\u9020\u6210\u4e0d\u5fc5\u8981\u8a18\u61b6\u9ad4\u58d3\u529b\u7684\u670d\u52d9\u3002<\/p>\n<p>\u5982\u679c\u5728\u5b8c\u6210\u9019\u4e9b\u8abf\u6821\u5f8c\uff0c\u6548\u80fd\u554f\u984c\u4f9d\u7136\u5b58\u5728\uff0c\u4e0b\u4e00\u6b65\u901a\u5e38\u4e0d\u6703\u662f\u66f4\u6fc0\u9032\u7684\u6838\u5fc3\u53c3\u6578\uff0c\u800c\u662f\u5347\u7d1a\u5230\u66f4\u5408\u9069\u7684\u786c\u9ad4\u898f\u683c\u8207\u66f4\u5feb\u7684\u5132\u5b58\u67b6\u69cb\u3002<\/p>\n<p>Dataplugs \u63d0\u4f9b<a href=\"https:\/\/www.dataplugs.com\/tc\/product\/dedicated-server\/\"><strong>\u5c08\u5c6c\u4f3a\u670d\u5668<\/strong><\/a>\u3001<a href=\"https:\/\/www.dataplugs.com\/tc\/product\/nvme-ssd-all-flash-dedicated-server\/\"><strong>NVMe \u9ad8\u901f\u5132\u5b58\u4f3a\u670d\u5668<\/strong><\/a>\u3001\u512a\u8cea\u7db2\u8def\u9023\u7dda\u8207 <strong>24 \u5c0f\u6642\u5168\u5e74\u7121\u4f11\u6280\u8853\u652f\u63f4<\/strong>\uff0c\u9069\u5408\u9700\u8981\u7a69\u5b9a\u9ad8\u6548\u57fa\u790e\u67b6\u69cb\u7684\u4f01\u696d\u8207\u7db2\u7ad9\u670d\u52d9\u3002\u82e5\u4f60\u6b63\u5728\u8a55\u4f30<strong>\u5c08\u5c6c\u4f3a\u670d\u5668\u79df\u7528<\/strong>\u3001<strong>NVMe \u4f3a\u670d\u5668\u65b9\u6848<\/strong>\u6216\u76f8\u95dc\u57fa\u790e\u67b6\u69cb\u670d\u52d9\uff0c\u6b61\u8fce\u700f\u89bd Dataplugs \u7db2\u7ad9\u6216\u806f\u7d61 <a href=\"mailto:sales@dataplugs.com\">sales@dataplugs.com<\/a>\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7576\u4e00\u53f0\u9ad8\u8a18\u61b6\u9ad4\u8ca0\u8f09\u7684\u4f3a\u670d\u5668\u958b\u59cb\u8b8a\u6162\u6642\uff0c\u554f\u984c\u901a\u5e38\u4e0d\u53ea\u662f\u5be6\u9ad4\u8a18\u61b6\u9ad4\u7e3d\u91cf\u4e0d\u8db3\uff0c\u66f4\u95dc\u9375\u7684\u662f Linux \u5728\u5be6\u969b\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u5982\u4f55\u5e73\u8861 RAM\u3001Swap\u3001\u5feb\u53d6\u8207\u78c1\u789f 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