{"id":70233,"date":"2026-08-04T08:00:12","date_gmt":"2026-08-04T00:00:12","guid":{"rendered":"https:\/\/www.dataplugs.com\/?p=70233"},"modified":"2026-08-03T15:04:54","modified_gmt":"2026-08-03T07:04:54","slug":"optimize-swap-memory-servers","status":"publish","type":"post","link":"https:\/\/www.dataplugs.com\/sc\/optimize-swap-memory-servers\/","title":{"rendered":"\u5982\u4f55\u5728\u9ad8\u5185\u5b58\u9700\u6c42\u670d\u52a1\u5668\u4e0a\u4f18\u5316 Swap \u8bbe\u7f6e\uff1f"},"content":{"rendered":"<div class=\"section-blog-2025\">\n<p>\u5f53\u4e00\u53f0\u9ad8\u5185\u5b58\u8d1f\u8f7d\u670d\u52a1\u5668\u5f00\u59cb\u53d8\u6162\u65f6\uff0c\u95ee\u9898\u901a\u5e38\u4e0d\u53ea\u662f\u7269\u7406\u5185\u5b58\u603b\u91cf\u4e0d\u8db3\uff0c\u66f4\u5173\u952e\u7684\u662f Linux \u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5982\u4f55\u5e73\u8861 RAM\u3001Swap\u3001\u7f13\u5b58\u4e0e\u78c1\u76d8 I\/O \u4e4b\u95f4\u7684\u8d44\u6e90\u5206\u914d\u3002\u5373\u4f7f\u7cfb\u7edf\u663e\u793a\u4ecd\u6709\u53ef\u7528\u5185\u5b58\uff0c\u6027\u80fd\u4ecd\u53ef\u80fd\u4e0b\u964d\u3001\u8fdb\u7a0b\u5f00\u59cb\u5361\u987f\uff0c\u800c\u540e\u53f0\u4e2d\u7684 Swap \u6d3b\u52a8\u4e5f\u53ef\u80fd\u9010\u6b65\u589e\u52a0\u3002\u8fd9\u6b63\u662f\u4e3a\u4ec0\u4e48 Swap \u8c03\u4f18\u5982\u6b64\u91cd\u8981\u3002\u76ee\u6807\u4e0d\u662f\u5b8c\u5168\u5173\u95ed Swap\uff0c\u800c\u662f\u786e\u4fdd\u5b83\u5e2e\u52a9\u7cfb\u7edf\u7ef4\u6301\u7a33\u5b9a\uff0c\u800c\u4e0d\u4f1a\u628a\u5185\u5b58\u538b\u529b\u8fdb\u4e00\u6b65\u653e\u5927\u6210\u5ef6\u8fdf\u3001\u5b58\u50a8\u74f6\u9888\uff0c\u751a\u81f3\u539f\u672c\u53ef\u4ee5\u907f\u514d\u7684\u670d\u52a1\u4e2d\u65ad\u3002<\/p>\n<h2><strong>Swap \u4f18\u5316\u771f\u6b63\u4ee3\u8868\u4ec0\u4e48\uff1f<\/strong><\/h2>\n<p>Swap \u662f\u4e00\u79cd\u57fa\u4e8e\u78c1\u76d8\u7a7a\u95f4\u7684\u865a\u62df\u5185\u5b58\u673a\u5236\u3002\u5f53 Linux \u5224\u65ad\u67d0\u4e9b\u5185\u5b58\u9875\u6682\u65f6\u4e0d\u9700\u8981\u4fdd\u7559\u5728 RAM \u4e2d\u65f6\uff0c\u5c31\u4f1a\u5c06\u5b83\u4eec\u79fb\u5230 Swap\u3002\u5bf9\u7e41\u5fd9\u670d\u52a1\u5668\u6765\u8bf4\uff0c\u8fd9\u6709\u52a9\u4e8e\u628a RAM \u4f18\u5148\u7559\u7ed9\u6d3b\u8dc3\u8fdb\u7a0b\u548c\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u3002\u8fd9\u79cd\u884c\u4e3a\u672c\u8eab\u5e76\u4e0d\u5f02\u5e38\u3002<\/p>\n<p>\u771f\u6b63\u7684\u95ee\u9898\u5728\u4e8e\uff0c\u5f53 Swap \u6d3b\u52a8\u53d8\u5f97\u8fc7\u4e8e\u9891\u7e41\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u82b1\u8d39\u8fc7\u591a\u65f6\u95f4\u5728 RAM \u4e0e\u5b58\u50a8\u8bbe\u5907\u4e4b\u95f4\u642c\u79fb\u5185\u5b58\u9875\u9762\uff0c\u8fdb\u800c\u9020\u6210\u54cd\u5e94\u53d8\u6162\u3001I\/O \u8d1f\u62c5\u52a0\u91cd\uff0c\u6700\u7ec8\u5f71\u54cd\u6574\u4f53\u670d\u52a1\u6027\u80fd\u3002<\/p>\n<p>\u5bf9\u4e8e\u9ad8\u5185\u5b58\u9700\u6c42\u7684\u5de5\u4f5c\u8d1f\u8f7d\u800c\u8a00\uff0cSwap \u4f18\u5316\u7684\u91cd\u70b9\u5728\u4e8e\u63a7\u5236\u5185\u6838\u4f7f\u7528 Swap \u7684\u79ef\u6781\u7a0b\u5ea6\u3001\u8bbe\u7f6e\u5408\u9002\u7684 Swap \u5bb9\u91cf\uff0c\u4ee5\u53ca\u5728\u5185\u5b58\u538b\u529b\u5347\u9ad8\u65f6\uff0c\u8ba9\u670d\u52a1\u5668\u4ee5\u66f4\u7a33\u5b9a\u7684\u65b9\u5f0f\u54cd\u5e94\u3002\u8fd9\u7c7b\u8c03\u6574\u5bf9\u4e8e\u6570\u636e\u5e93\u670d\u52a1\u5668\u3001PHP-FPM \u8fdb\u7a0b\u6c60\u3001\u5206\u6790\u4efb\u52a1\u3001\u641c\u7d22\u670d\u52a1\uff0c\u4ee5\u53ca\u9ad8\u6d41\u91cf\u5e94\u7528\u670d\u52a1\u5668\u5c24\u5176\u91cd\u8981\u3002<\/p>\n<h2><strong>\u4e3a\u4ec0\u4e48\u5728\u8fd8\u6709\u53ef\u7528 RAM \u7684\u60c5\u51b5\u4e0b\u4ecd\u7136\u4f1a\u4f7f\u7528 Swap\uff1f<\/strong><\/h2>\n<p>\u5f88\u591a\u7cfb\u7edf\u7ba1\u7406\u5458\u4f1a\u4ee5\u4e3a\uff0c\u53ea\u6709\u5728 RAM \u5feb\u8981\u8017\u5c3d\u65f6\uff0cLinux \u624d\u5e94\u8be5\u5f00\u59cb\u4f7f\u7528 Swap\u3002\u5b9e\u9645\u4e0a\u5e76\u975e\u5982\u6b64\u3002Linux \u5185\u6838\u53ef\u80fd\u4f1a\u4e3b\u52a8\u628a\u8f83\u5c11\u4f7f\u7528\u7684\u533f\u540d\u5185\u5b58\u79fb\u5230 Swap\uff0c\u4ee5\u4fbf\u817e\u51fa\u66f4\u591a RAM \u7ed9\u6d3b\u8dc3\u5de5\u4f5c\u8d1f\u8f7d\u4e0e\u9875\u9762\u7f13\u5b58\u4f7f\u7528\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u51fa\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u7684 Swap \u4f7f\u7528\u91cf\uff0c\u672c\u8eab\u5e76\u4e0d\u4ee3\u8868\u7cfb\u7edf\u5f02\u5e38\uff0c\u53cd\u800c\u53ef\u80fd\u662f\u6b63\u5e38\u7684\u5185\u5b58\u7ba1\u7406\u7b56\u7565\u3002<\/p>\n<p>\u771f\u6b63\u9700\u8981\u5173\u6ce8\u7684\u662f\uff0c\u7cfb\u7edf\u662f\u5426\u6301\u7eed\u8fdb\u884c Swap in \u548c Swap out\u3002Swap \u4f7f\u7528\u91cf\u7a33\u5b9a\u901a\u5e38\u95ee\u9898\u4e0d\u5927\uff0c\u4f46\u5982\u679c Swap \u6d3b\u52a8\u9891\u7e41\u4e14\u53cd\u590d\u53d1\u751f\uff0c\u5f80\u5f80\u5c31\u662f\u6027\u80fd\u5f00\u59cb\u4e0b\u964d\u7684\u4fe1\u53f7\u3002<\/p>\n<h2><strong>\u5982\u4f55\u5224\u65ad Swap \u662f\u5426\u5df2\u7ecf\u6210\u4e3a\u6027\u80fd\u95ee\u9898\uff1f<\/strong><\/h2>\n<p>\u5efa\u8bae\u5148\u8fdb\u884c\u57fa\u672c\u68c0\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\u4e8e\u67e5\u770b\u6574\u4f53 RAM \u4e0e Swap \u7684\u4f7f\u7528\u60c5\u51b5\u3002<br \/><span style=\"color: #008000;\">swapon &#8211;show<\/span> \u53ef\u786e\u8ba4\u5f53\u524d\u542f\u7528\u7684 Swap \u8bbe\u5907\u6216 Swap \u6587\u4ef6\u3002<br \/><span style=\"color: #008000;\">vmstat 1 5<\/span> \u5219\u80fd\u63d0\u4f9b\u66f4\u6709\u4ef7\u503c\u7684\u52a8\u6001\u4fe1\u606f\u3002<\/p>\n<p>\u5176\u4e2d\u6700\u503c\u5f97\u89c2\u5bdf\u7684\u662f <span style=\"color: #008000;\">si<\/span> \u4e0e <span style=\"color: #008000;\">so<\/span> \u5b57\u6bb5\uff0c\u4e5f\u5c31\u662f Swap in \u548c Swap out\u3002\u5982\u679c\u5728\u6b63\u5e38\u8d1f\u8f7d\u4e0b\u8fd9\u4e24\u4e2a\u6570\u503c\u4ecd\u6301\u7eed\u589e\u52a0\uff0c\u5c31\u8bf4\u660e\u7cfb\u7edf\u6b63\u5728\u627f\u53d7\u5185\u5b58\u538b\u529b\uff0c\u5e76\u53ef\u80fd\u9010\u6b65\u8fdb\u5165\u5e94\u7528\u54cd\u5e94\u53d8\u5dee\u7684\u72b6\u6001\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> Swap \u4f7f\u7528\u91cf\u9ad8\u4e0d\u4e00\u5b9a\u662f\u95ee\u9898\uff0c\u771f\u6b63\u9700\u8981\u8b66\u60d5\u7684\u901a\u5e38\u662f Swap \u6d3b\u52a8\u8fc7\u4e8e\u9891\u7e41\u3002<\/p>\n<h2><strong>\u8bbe\u7f6e\u5408\u9002\u7684 Swap \u5bb9\u91cf<\/strong><\/h2>\n<p>\u5408\u7406\u7684 Swap \u5bb9\u91cf\u80fd\u4e3a Linux \u63d0\u4f9b\u5fc5\u8981\u7684\u7f13\u51b2\u7a7a\u95f4\uff0c\u540c\u65f6\u907f\u514d\u670d\u52a1\u5668\u5728\u771f\u6b63\u53d1\u751f\u5185\u5b58\u4e0d\u8db3\u4e4b\u524d\uff0c\u957f\u65f6\u95f4\u9677\u5165\u6027\u80fd\u7f13\u6162\u6076\u5316\u7684\u60c5\u51b5\u3002\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u8f83\u5c0f\u578b\u7cfb\u7edf\u9002\u5408\u914d\u7f6e\u4e0e RAM \u63a5\u8fd1\u7684 Swap\uff0c\u800c\u5f53\u7269\u7406\u5185\u5b58\u8d85\u8fc7 8GB \u65f6\uff0c\u5e38\u89c1\u505a\u6cd5\u662f\u5efa\u7acb\u4f8b\u5982 4GB \u7684\u4e2d\u7b49\u5bb9\u91cf Swap \u6587\u4ef6\u3002<\/p>\n<p>\u5982\u679c\u7cfb\u7edf\u4e0d\u9700\u8981\u4f11\u7720\u529f\u80fd\uff0c\u751f\u4ea7\u73af\u5883\u670d\u52a1\u5668\u901a\u5e38\u6ca1\u6709\u5fc5\u8981\u914d\u7f6e\u8fc7\u5927\u7684 Swap \u7a7a\u95f4\u3002\u56e0\u4e3a\u8fc7\u5927\u7684 Swap \u6709\u65f6\u53ea\u4f1a\u8ba9\u7cfb\u7edf\u5728\u8d44\u6e90\u4e0d\u8db3\u65f6\u62d6\u5f97\u66f4\u4e45\uff0c\u800c\u4e0d\u662f\u771f\u6b63\u6539\u5584\u6027\u80fd\u3002<\/p>\n<p>\u5728\u73b0\u4ee3 Linux \u7cfb\u7edf\u4e2d\uff0cSwap \u6587\u4ef6\u901a\u5e38\u6bd4\u72ec\u7acb\u7684 Swap \u5206\u533a\u66f4\u53d7\u6b22\u8fce\uff0c\u56e0\u4e3a\u5b83\u66f4\u5bb9\u6613\u8c03\u6574\u5927\u5c0f\uff0c\u4e5f\u66f4\u65b9\u4fbf\u540e\u7eed\u7ba1\u7406\u3002<\/p>\n<h2><strong>\u9488\u5bf9\u751f\u4ea7\u73af\u5883\u5de5\u4f5c\u8d1f\u8f7d\u8c03\u6574 swappiness<\/strong><\/h2>\n<p><span style=\"color: #008000;\">swappiness<\/span> \u7528\u6765\u63a7\u5236 Linux \u5728\u4f7f\u7528 Swap \u4e0e\u56de\u6536\u7f13\u5b58\u4e4b\u95f4\u7684\u503e\u5411\u3002\u9ed8\u8ba4\u503c 60 \u5bf9\u5ef6\u8fdf\u654f\u611f\u578b\u670d\u52a1\u5668\u6765\u8bf4\u901a\u5e38\u504f\u9ad8\u3002\u5bf9\u4e8e\u9ad8\u5185\u5b58\u9700\u6c42\u7684\u5e94\u7528\u670d\u52a1\u5668\u4e0e\u6570\u636e\u5e93\u670d\u52a1\u5668\u800c\u8a00\uff0c\u8f83\u4f4e\u7684\u8bbe\u7f6e\u901a\u5e38\u66f4\u5408\u9002\u3002<\/p>\n<p>\u4e00\u4e2a\u5e38\u89c1\u4e14\u5b9e\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>\u5982\u679c\u9700\u8981\u6c38\u4e45\u751f\u6548\uff0c\u53ef\u5728\u7cfb\u7edf\u914d\u7f6e\u6587\u4ef6\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>\u5bf9\u4e8e\u6781\u5ea6\u91cd\u89c6\u5ef6\u8fdf\u8868\u73b0\u7684\u73af\u5883\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u4e00\u6b65\u6d4b\u8bd5 1\u3002\u8f83\u4f4e\u7684\u6570\u503c\u53ef\u4ee5\u964d\u4f4e\u6d3b\u8dc3\u5e94\u7528\u5185\u5b58\u8fc7\u65e9\u88ab\u79fb\u5165\u8f83\u6162 Swap \u7684\u6982\u7387\uff0c\u4f46\u8fd9\u5e76\u4e0d\u4ee3\u8868 Linux \u4f1a\u5b8c\u5168\u505c\u6b62\u4f7f\u7528 Swap\u3002<\/p>\n<h2><strong>\u8c03\u6574\u7f13\u5b58\u538b\u529b\u4e0e\u56de\u5199\u884c\u4e3a<\/strong><\/h2>\n<p>\u9664\u4e86 <span style=\"color: #008000;\">swappiness<\/span> \u4e4b\u5916\uff0c\u53e6\u5916\u4e24\u7c7b\u8bbe\u7f6e\u5bf9\u5185\u5b58\u6027\u80fd\u4e5f\u6709\u660e\u663e\u5f71\u54cd\u3002<span style=\"color: #008000;\">vm.vfs_cache_pressure<\/span> \u7528\u6765\u63a7\u5236 Linux \u56de\u6536\u6587\u4ef6\u7cfb\u7edf\u5143\u6570\u636e\u7f13\u5b58\u7684\u79ef\u6781\u7a0b\u5ea6\uff0c\u800c <span style=\"color: #008000;\">vm.dirty_ratio<\/span> \u4e0e\u76f8\u5173\u53c2\u6570\uff0c\u5219\u4f1a\u5f71\u54cd\u672a\u5199\u56de\u6570\u636e\u53ef\u4ee5\u5728 RAM \u4e2d\u7d2f\u79ef\u5230\u4ec0\u4e48\u7a0b\u5ea6\uff0c\u624d\u5f00\u59cb\u8fdb\u884c\u6570\u636e\u56de\u5199\u3002<\/p>\n<p>\u4e00\u7ec4\u76f8\u5bf9\u5e73\u8861\u7684\u57fa\u51c6\u8bbe\u7f6e\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>\u8fd9\u4e9b\u8bbe\u7f6e\u6709\u52a9\u4e8e\u5185\u6838\u5728\u9ad8\u8d1f\u8f7d\u60c5\u51b5\u4e0b\uff0c\u66f4\u7a33\u5b9a\u5730\u5e73\u8861\u7f13\u5b58\u4fdd\u7559\u4e0e\u78c1\u76d8\u5199\u5165\u884c\u4e3a\uff0c\u7279\u522b\u9002\u5408\u8fd0\u884c\u7f51\u7ad9\u5e94\u7528\u3001\u6570\u636e\u5e93\uff0c\u4ee5\u53ca\u9ad8\u5b58\u50a8 I\/O \u6d3b\u52a8\u670d\u52a1\u7684\u670d\u52a1\u5668\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> \u5982\u679c\u7cfb\u7edf\u5728\u5927\u91cf\u5199\u5165\u671f\u95f4\u51fa\u73b0\u6027\u80fd\u4e0b\u964d\uff0c\u9664\u4e86\u89c2\u5bdf Swap \u884c\u4e3a\uff0c\u4e5f\u5e94\u540c\u65f6\u68c0\u67e5 dirty page \u76f8\u5173\u8bbe\u7f6e\u3002<\/p>\n<h2><strong>\u68c0\u67e5 Transparent Huge Pages \u4e0e zram<\/strong><\/h2>\n<p>Transparent Huge Pages\uff08\u900f\u660e\u5927\u9875\u5185\u5b58\uff09\u5bf9\u67d0\u4e9b\u5de5\u4f5c\u8d1f\u8f7d\u53ef\u80fd\u6709\u5e2e\u52a9\uff0c\u4f46\u5bf9\u4e0d\u5c11\u6570\u636e\u5e93\u6765\u8bf4\uff0c\u5173\u95ed\u540e\u53cd\u800c\u80fd\u5e26\u6765\u66f4\u7a33\u5b9a\u7684\u8868\u73b0\uff0c\u56e0\u4e3a\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u7531\u5185\u5b58\u788e\u7247\u9020\u6210\u7684\u5ef6\u8fdf\u5cf0\u503c\u3002\u8fd9\u9879\u8c03\u6574\u4e0d\u5e94\u4e00\u5200\u5207\uff0c\u800c\u5e94\u6839\u636e\u5b9e\u9645\u5de5\u4f5c\u8d1f\u8f7d\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u503c\u5f97\u8003\u8651\u7684\u9009\u9879\u662f zram\u3002zram \u4f1a\u5728 RAM \u4e2d\u5efa\u7acb\u538b\u7f29\u578b Swap \u7a7a\u95f4\uff0c\u901f\u5ea6\u901a\u5e38\u6bd4\u78c1\u76d8\u578b Swap \u5feb\u5f97\u591a\u3002\u5bf9\u4e8e\u4f1a\u51fa\u73b0\u7a81\u53d1\u5185\u5b58\u9700\u6c42\u7684\u7cfb\u7edf\u6765\u8bf4\uff0czram \u53ef\u4ee5\u5148\u5438\u6536\u77ed\u6682\u5cf0\u503c\uff0c\u964d\u4f4e\u670d\u52a1\u5668\u8fc7\u65e9\u4f9d\u8d56\u8f83\u6162\u5b58\u50a8\u8bbe\u5907\u7684\u6982\u7387\u3002<\/p>\n<h2><strong>\u68c0\u67e5\u54ea\u4e9b\u8fdb\u7a0b\u6b63\u5728\u9020\u6210\u5185\u5b58\u538b\u529b<\/strong><\/h2>\n<p>\u5982\u679c Swap \u4f7f\u7528\u91cf\u6301\u7eed\u589e\u52a0\uff0c\u4e0b\u4e00\u6b65\u4e0d\u5e94\u53ea\u662f\u7ee7\u7eed\u8c03\u6574\u5185\u6838\u53c2\u6570\uff0c\u800c\u662f\u627e\u51fa\u771f\u6b63\u6d88\u8017\u5185\u5b58\u7684\u670d\u52a1\u6216\u8fdb\u7a0b\u3002<\/p>\n<p>\u5e38\u7528\u547d\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>\u8fd9\u7c7b\u68c0\u67e5\u5f80\u5f80\u80fd\u53d1\u73b0\u4e00\u4e9b\u5178\u578b\u95ee\u9898\uff0c\u4f8b\u5982 PHP-FPM \u8fdb\u7a0b\u6c60\u8bbe\u7f6e\u8fc7\u5927\u3001MySQL \u5185\u5b58\u5206\u914d\u8fc7\u9ad8\u3001Elasticsearch \u5185\u5b58\u81a8\u80c0\uff0c\u6216\u5e94\u7528\u7a0b\u5e8f\u7684\u5de5\u4f5c\u8fdb\u7a0b\u6570\u91cf\u672c\u8eab\u5c31\u8d85\u51fa\u5f53\u524d RAM \u53ef\u627f\u53d7\u8303\u56f4\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cSwap \u8c03\u4f18\u4e5f\u8bb8\u80fd\u7f13\u89e3\u8868\u9762\u75c7\u72b6\uff0c\u4f46\u771f\u6b63\u7684\u89e3\u51b3\u65b9\u6848\u4ecd\u7136\u662f\u670d\u52a1\u5c42\u9762\u7684\u4f18\u5316\u4e0e\u8d44\u6e90\u89c4\u5212\u3002<\/p>\n<h2><strong>\u907f\u514d OOM \u53d1\u751f\u65f6\u9020\u6210\u66f4\u4e25\u91cd\u7684\u540e\u679c<\/strong><\/h2>\n<p>\u5f53\u5185\u5b58\u5f7b\u5e95\u8017\u5c3d\u65f6\uff0cLinux \u7684 OOM Killer \u4f1a\u51b3\u5b9a\u7ec8\u6b62\u54ea\u4e2a\u8fdb\u7a0b\u3002\u5bf9\u4e8e\u751f\u4ea7\u73af\u5883\u670d\u52a1\u5668\u6765\u8bf4\uff0c\u9002\u5ea6\u8c03\u6574\u8fdb\u7a0b\u7684 OOM \u4f18\u5148\u7ea7\u662f\u503c\u5f97\u8003\u8651\u7684\u505a\u6cd5\uff0c\u8fd9\u6837\u50cf SSH \u6216\u5173\u952e\u7cfb\u7edf\u670d\u52a1\u5c31\u4e0d\u4f1a\u6210\u4e3a\u6700\u5148\u88ab\u7ec8\u6b62\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u8fd9\u5f53\u7136\u4e0d\u80fd\u4ee3\u66ff\u6b63\u786e\u7684\u5bb9\u91cf\u89c4\u5212\uff0c\u4f46\u5728\u53d1\u751f\u5185\u5b58\u4e8b\u4ef6\u65f6\uff0c\u786e\u5b9e\u53ef\u4ee5\u964d\u4f4e\u7cfb\u7edf\u6574\u4f53\u5931\u53bb\u53ef\u7ba1\u7406\u6027\u7684\u98ce\u9669\u3002<\/p>\n<h2><strong>\u76d1\u63a7\u91cd\u70b9\u5e94\u653e\u5728\u538b\u529b\uff0c\u800c\u4e0d\u53ea\u662f\u5185\u5b58\u603b\u91cf<\/strong><\/h2>\n<p>\u6700\u5e38\u89c1\u7684\u9519\u8bef\u4e4b\u4e00\uff0c\u5c31\u662f\u53ea\u770b\u5269\u4f59 RAM \u6216\u603b Swap \u4f7f\u7528\u91cf\u3002\u5185\u5b58\u538b\u529b\u5fc5\u987b\u653e\u5728\u6574\u4f53\u7cfb\u7edf\u73af\u5883\u4e2d\u4e00\u8d77\u5224\u65ad\u3002\u4f60\u5e94\u8be5\u540c\u65f6\u76d1\u63a7 Swap I\/O\u3001\u78c1\u76d8\u5ef6\u8fdf\u3001\u5e94\u7528\u54cd\u5e94\u65f6\u95f4\u3001\u4e3b\u8981\u5185\u5b58\u6d88\u8017\u8fdb\u7a0b\uff0c\u4ee5\u53ca OOM \u4e8b\u4ef6\uff0c\u624d\u80fd\u66f4\u51c6\u786e\u5224\u65ad\u670d\u52a1\u5668\u5728\u9ad8\u5cf0\u8d1f\u8f7d\u4e0b\u662f\u5426\u771f\u6b63\u5065\u5eb7\u3002<\/p>\n<p class=\"alert-tip\"><strong>\u63d0\u793a\uff1a<\/strong> \u5982\u679c Swap \u6d3b\u52a8\u4e0e\u78c1\u76d8\u5ef6\u8fdf\u540c\u65f6\u4e0a\u5347\uff0c\u901a\u5e38\u5e94\u89c6\u4e3a\u57fa\u7840\u67b6\u6784\u5c42\u9762\u7684\u8b66\u8baf\uff0c\u800c\u4e0d\u53ea\u662f\u5355\u7eaf\u7684\u5185\u5b58\u53c2\u6570\u95ee\u9898\u3002<\/p>\n<h2><strong>\u5f53\u8c03\u4f18\u5df2\u7ecf\u4e0d\u8db3\u4ee5\u89e3\u51b3\u95ee\u9898\u65f6<\/strong><\/h2>\n<p>Swap \u8c03\u4f18\u80fd\u5904\u7406\u7684\u95ee\u9898\u5176\u5b9e\u6709\u9650\u3002\u5982\u679c\u5728\u8c03\u6574 <span style=\"color: #008000;\">swappiness<\/span> \u4e0e\u5185\u5b58\u7b56\u7565\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u4ecd\u6301\u7eed\u51fa\u73b0\u9891\u7e41\u7684 Swap in\u3001Swap out\u3001\u9ad8\u5ef6\u8fdf\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u505c\u6ede\uff0c\u90a3\u4e48\u95ee\u9898\u901a\u5e38\u66f4\u6df1\u5c42\u3002\u53ef\u80fd\u662f\u5de5\u4f5c\u8d1f\u8f7d\u672c\u8eab\u9700\u8981\u66f4\u591a RAM\u3001\u5de5\u4f5c\u8fdb\u7a0b\u6570\u91cf\u8fc7\u591a\u3001\u5e94\u7528\u7a0b\u5e8f\u6548\u7387\u4e0d\u8db3\uff0c\u6216\u5b58\u50a8\u8bbe\u5907\u6027\u80fd\u65e0\u6cd5\u8ddf\u4e0a\u9700\u6c42\u3002<\/p>\n<p>\u5bf9\u751f\u4ea7\u73af\u5883\u7cfb\u7edf\u6765\u8bf4\uff0c\u8c03\u4f18\u7684\u76ee\u7684\u5e94\u662f\u6539\u5584\u7cfb\u7edf\u884c\u4e3a\uff0c\u800c\u4e0d\u662f\u63a9\u76d6\u670d\u52a1\u5668\u914d\u7f6e\u5df2\u7ecf\u4e0d\u8db3\u7684\u4e8b\u5b9e\u3002<\/p>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u8981\u5728\u9ad8\u5185\u5b58\u9700\u6c42\u670d\u52a1\u5668\u4e0a\u4f18\u5316 Swap \u8bbe\u7f6e\uff0c\u91cd\u70b9\u5728\u4e8e\u8ba9 Linux \u5728\u627f\u53d7\u538b\u529b\u65f6\u4ecd\u80fd\u7ef4\u6301\u7a33\u5b9a\u54cd\u5e94\uff0c\u800c\u4e0d\u662f\u5f3a\u8feb\u7cfb\u7edf\u5b8c\u5168\u4e0d\u4f7f\u7528 Swap\u3002\u6b63\u786e\u505a\u6cd5\u662f\u89c2\u5bdf\u771f\u5b9e\u7684 Swap \u6d3b\u52a8\uff0c\u9002\u5ea6\u8c03\u6574 <span style=\"color: #008000;\">swappiness<\/span> \u4e0e\u7f13\u5b58\u884c\u4e3a\uff0c\u8bc4\u4f30 Transparent Huge Pages \u4e0e zram \u7b49\u8f85\u52a9\u673a\u5236\uff0c\u5e76\u627e\u51fa\u771f\u6b63\u9020\u6210\u4e0d\u5fc5\u8981\u5185\u5b58\u538b\u529b\u7684\u670d\u52a1\u3002<\/p>\n<p>\u5982\u679c\u5728\u5b8c\u6210\u8fd9\u4e9b\u8c03\u4f18\u540e\uff0c\u6027\u80fd\u95ee\u9898\u4f9d\u7136\u5b58\u5728\uff0c\u4e0b\u4e00\u6b65\u901a\u5e38\u4e0d\u662f\u66f4\u6fc0\u8fdb\u7684\u5185\u6838\u53c2\u6570\uff0c\u800c\u662f\u5347\u7ea7\u5230\u66f4\u5408\u9002\u7684\u786c\u4ef6\u914d\u7f6e\u4e0e\u66f4\u5feb\u7684\u5b58\u50a8\u67b6\u6784\u3002<\/p>\n<p>Dataplugs \u63d0\u4f9b<a href=\"https:\/\/www.dataplugs.com\/sc\/product\/dedicated-server-%e6%9c%8d%e5%8a%a1%e5%99%a8\/\"><strong>\u72ec\u7acb\u670d\u52a1\u5668<\/strong><\/a>\u3001<a href=\"https:\/\/www.dataplugs.com\/sc\/product\/nvme-ssd-all-flash-dedicated-server\/\"><strong>NVMe \u9ad8\u901f\u5b58\u50a8\u670d\u52a1\u5668<\/strong><\/a>\u3001\u4f18\u8d28\u7f51\u7edc\u8fde\u63a5\u4e0e <strong>24 \u5c0f\u65f6\u5168\u5e74\u65e0\u4f11\u6280\u672f\u652f\u6301<\/strong>\uff0c\u9002\u5408\u9700\u8981\u7a33\u5b9a\u9ad8\u6548\u57fa\u7840\u67b6\u6784\u7684\u4f01\u4e1a\u4e0e\u7f51\u7ad9\u670d\u52a1\u3002\u5982\u679c\u4f60\u6b63\u5728\u8bc4\u4f30<strong>\u72ec\u7acb\u670d\u52a1\u5668\u79df\u7528<\/strong>\u3001<strong>NVMe \u670d\u52a1\u5668\u65b9\u6848<\/strong>\u6216\u76f8\u5173\u57fa\u7840\u67b6\u6784\u670d\u52a1\uff0c\u6b22\u8fce\u6d4f\u89c8 Dataplugs \u7f51\u7ad9\u6216\u8054\u7cfb <a href=\"mailto:sales@dataplugs.com\">sales@dataplugs.com<\/a>\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u4e00\u53f0\u9ad8\u5185\u5b58\u8d1f\u8f7d\u670d\u52a1\u5668\u5f00\u59cb\u53d8\u6162\u65f6\uff0c\u95ee\u9898\u901a\u5e38\u4e0d\u53ea\u662f\u7269\u7406\u5185\u5b58\u603b\u91cf\u4e0d\u8db3\uff0c\u66f4\u5173\u952e\u7684\u662f Linux \u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5982\u4f55\u5e73\u8861 RAM\u3001Swap\u3001\u7f13\u5b58\u4e0e\u78c1\u76d8 I\/O 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