{"id":15588,"date":"2024-11-18T08:47:05","date_gmt":"2024-11-18T00:47:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/15588\/"},"modified":"2024-11-18T08:47:05","modified_gmt":"2024-11-18T00:47:05","slug":"%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%e5%92%8c%e8%b0%83%e6%95%b4linux%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%86%85%e6%a0%b8%e5%8f%82%e6%95%b0%e4%bb%a5%e6%8f%90%e9%ab%98%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15588\/","title":{"rendered":"\u5982\u4f55\u4f18\u5316\u548c\u8c03\u6574Linux\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u4ee5\u63d0\u9ad8\u6027\u80fd"},"content":{"rendered":"<p>\u5982\u4f55\u4f18\u5316\u548c\u8c03\u6574linux\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u4ee5\u63d0\u9ad8\u6027\u80fd<\/p>\n<p>\u6458\u8981\uff1aLinux\u64cd\u4f5c\u7cfb\u7edf\u662f\u4e16\u754c\u4e0a\u6700\u6d41\u884c\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u4e00\uff0c\u62e5\u6709\u5f3a\u5927\u7684\u6027\u80fd\u548c\u7075\u6d3b\u7684\u914d\u7f6e\u9009\u9879\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u901a\u8fc7\u4f18\u5316\u548c\u8c03\u6574Linux\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u6765\u63d0\u9ad8\u6027\u80fd\u3002\u4ece\u7406\u89e3\u5185\u6838\u53c2\u6570\u7684\u542b\u4e49\u5f00\u59cb\uff0c\u5c06\u63a2\u8ba8\u5e38\u89c1\u7684\u6027\u80fd\u8c03\u4f18\u6280\u5de7\uff0c\u5305\u62ec\u5185\u5b58\u7ba1\u7406\u3001\u78c1\u76d8IO\u3001\u7f51\u7edc\u548c\u8c03\u5ea6\u5668\u7b49\u65b9\u9762\u3002\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\u548c\u8c03\u6574\uff0c\u7528\u6237\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528Linux\u7cfb\u7edf\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\u548c\u7cfb\u7edf\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n<ol>\n<li>\u5f15\u8a00<\/li>\n<\/ol>\n<p>Linux\u5185\u6838\u662f\u64cd\u4f5c\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u63a7\u5236\u7740\u7cfb\u7edf\u7684\u5404\u4e2a\u65b9\u9762\u3002\u901a\u8fc7\u4f18\u5316\u548c\u8c03\u6574\u5185\u6838\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u89c1\u7684\u5185\u6838\u53c2\u6570\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u4f18\u5316\u6280\u5de7\uff0c\u4ee5\u4fbf\u8bfb\u8005\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u5bf9\u5176\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<ol>\n<li>\u7406\u89e3\u5185\u6838\u53c2\u6570<\/li>\n<\/ol>\n<p>\u5728\u5f00\u59cb\u4f18\u5316\u548c\u8c03\u6574\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u7406\u89e3\u5185\u6838\u53c2\u6570\u7684\u542b\u4e49\u548c\u4f5c\u7528\u3002\u5185\u6838\u53c2\u6570\u662f\u5185\u6838\u901a\u8fc7\/sys\u3001\/proc\u7b49\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\u6587\u4ef6\u8fdb\u884c\u914d\u7f6e\u7684\u9009\u9879\u3002\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u8fd9\u4e9b\u6587\u4ef6\u7684\u503c\u6765\u6539\u53d8\u5185\u6838\u7684\u884c\u4e3a\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u7528\u6237\u6765\u8bf4\uff0c\u6700\u91cd\u8981\u7684\u5185\u6838\u53c2\u6570\u662f\u5728\u542f\u52a8\u7cfb\u7edf\u65f6\u901a\u8fc7\u5f15\u5bfc\u52a0\u8f7d\u7a0b\u5e8f\u4f20\u9012\u7ed9\u5185\u6838\u7684\u53c2\u6570\u3002<\/p>\n<ol>\n<li>\u5185\u5b58\u7ba1\u7406<\/li>\n<\/ol>\n<p>\u5185\u5b58\u662f\u7cfb\u7edf\u6027\u80fd\u7684\u4e00\u9879\u91cd\u8981\u6307\u6807\u3002\u4f18\u5316\u5185\u5b58\u7ba1\u7406\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u53c2\u6570\u6765\u4f18\u5316\u5185\u5b58\u7ba1\u7406\uff1a<\/p>\n<ul>\n<li>vm.swappiness\uff1a\u63a7\u5236\u5185\u6838\u5c06\u6570\u636e\u4ece\u5185\u5b58\u4ea4\u6362\u5230\u4ea4\u6362\u7a7a\u95f4\u7684\u9891\u7387\u3002\u5c06\u5176\u503c\u8bbe\u7f6e\u4e3a\u8f83\u4f4e\u7684\u503c\uff08\u598210\uff09\u53ef\u4ee5\u51cf\u5c11\u4ea4\u6362\uff0c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/li>\n<li>vm.vfs_cache_pressure\uff1a\u8bbe\u5b9a\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u4e0edentry\u548cinode\u7f13\u5b58\u7684\u6bd4\u4f8b\u3002\u589e\u5927\u5176\u503c\uff08\u59821000\uff09\u53ef\u4ee5\u51cf\u5c11\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u7684\u4f7f\u7528\uff0c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/li>\n<\/ul>\n<ol>\n<li>\u78c1\u76d8IO<\/li>\n<\/ol>\n<p>\u78c1\u76d8IO\u662f\u7cfb\u7edf\u6027\u80fd\u7684\u53e6\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u53c2\u6570\u6765\u4f18\u5316\u78c1\u76d8IO\uff1a<\/p>\n<ul>\n<li>elevator\uff1a\u9009\u62e9\u78c1\u76d8I\/O\u8c03\u5ea6\u5668\u3002\u5e38\u89c1\u7684\u8c03\u5ea6\u5668\u5305\u62ecCFQ\u3001NOOP\u548cDeadline\u3002\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u8c03\u5ea6\u5668\u53ef\u4ee5\u63d0\u9ad8\u78c1\u76d8IO\u6027\u80fd\u3002<\/li>\n<li>vm.dirty_ratio\u548cvm.dirty_background_ratio\uff1a\u63a7\u5236\u5185\u6838\u5728\u5f00\u59cb\u5199\u56de\u810f\u9875\uff08\u5df2\u4fee\u6539\u4f46\u5c1a\u672a\u5199\u56de\u78c1\u76d8\u7684\u9875\uff09\u4e4b\u524d\u4fdd\u7559\u591a\u5c11\u5185\u5b58\u3002\u589e\u5927\u5176\u503c\u53ef\u4ee5\u63d0\u9ad8\u5199\u5165\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u4f1a\u589e\u52a0\u5185\u5b58\u538b\u529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