{"id":36539,"date":"2026-10-09T08:00:45","date_gmt":"2026-10-09T00:00:45","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/how-to-fix-severe-server-memory-fragmentation\/"},"modified":"2026-10-12T09:20:45","modified_gmt":"2026-10-12T01:20:45","slug":"how-to-fix-severe-server-memory-fragmentation","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/knowledge\/how-to-fix-severe-server-memory-fragmentation\/","title":{"rendered":"\u5982\u4f55\u89e3\u51b3\u4e25\u91cd\u7684\u670d\u52a1\u5668\u5185\u5b58\u788e\u7247\u5316"},"content":{"rendered":"\n<p>\u5728\u771f\u5b9e\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/los-angeles\/\" target=\"_blank\">\u670d\u52a1\u5668\u79df\u7528\u73af\u5883<\/a>\u4e2d\uff0c<a href=\"https:\/\/www.varidata.com\/zh-cn\/blog\/the-relationship-between-memory-rank-bank-and-channel\/\" target=\"_blank\">\u670d\u52a1\u5668\u5185\u5b58<\/a>\u788e\u7247\u5316\u662f\u4e00\u7c7b\u5178\u578b\u7684\u5e95\u5c42\u95ee\u9898\uff0c\u5b83\u5f80\u5f80\u9690\u85cf\u5728\u4e00\u4e9b\u6a21\u7cca\u75c7\u72b6\u4e4b\u540e\uff1a\u5206\u914d\u505c\u987f\u3001\u5ef6\u8fdf\u4e0d\u7a33\u5b9a\u3001\u5927\u9875\u8bf7\u6c42\u5931\u8d25\uff0c\u4ee5\u53ca\u5de5\u4f5c\u8d1f\u8f7d\u6574\u4f53\u770b\u4f3c\u6b63\u5e38\u3001\u4f46\u5728\u538b\u529b\u4e0b\u8868\u73b0\u5f02\u5e38\u3002\u4e0e\u5355\u7eaf\u7684\u5185\u5b58\u8017\u5c3d\u4e0d\u540c\uff0c\u788e\u7247\u5316\u610f\u5473\u7740\u7cfb\u7edf\u4e2d\u786e\u5b9e\u8fd8\u6709\u7a7a\u95f2\u5185\u5b58\uff0c\u4f46\u8fd9\u4e9b\u7a7a\u95f2\u5185\u5b58\u88ab\u5207\u5272\u6210\u8fc7\u4e8e\u96f6\u6563\u3001\u6216\u8005\u4f4d\u7f6e\u4e0d\u5229\u7684\u5757\uff0c\u65e0\u6cd5\u6ee1\u8db3\u67d0\u4e9b\u5206\u914d\u8def\u5f84\u7684\u9700\u6c42\u3002\u5bf9\u4e8e\u8fd0\u7ef4\u957f\u65f6\u95f4\u5728\u7ebf\u7cfb\u7edf\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0c\u7406\u89e3\u788e\u7247\u5316\u5982\u4f55\u5f62\u6210\u3001\u4ee5\u53ca\u5982\u4f55\u964d\u4f4e\u788e\u7247\u5316\uff0c\u5bf9\u4e8e\u4fdd\u6301\u6027\u80fd\u7684\u53ef\u9884\u6d4b\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2><strong>\u670d\u52a1\u5668\u5185\u5b58\u788e\u7247\u5316\u5230\u5e95\u662f\u4ec0\u4e48<\/strong><\/h2>\n<p>\u4ece\u9ad8\u5c42\u89c6\u89d2\u770b\uff0c\u788e\u7247\u5316\u51fa\u73b0\u5728\u5185\u5b58\u88ab\u53cd\u590d\u7533\u8bf7\u548c\u91ca\u653e\u4e4b\u540e\uff0c\u8fd9\u79cd\u6a21\u5f0f\u4f1a\u8ba9\u5206\u914d\u5668\u7559\u4e0b\u5927\u91cf\u5f7c\u6b64\u65ad\u5f00\u7684\u7a7a\u95f2\u533a\u57df\u3002\u64cd\u4f5c\u7cfb\u7edf\u901a\u5e38\u80fd\u591f\u628a\u4e0d\u8fde\u7eed\u7684\u7269\u7406\u9875\u6620\u5c04\u5230\u8fde\u7eed\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\uff0c\u56e0\u6b64\u5e76\u4e0d\u662f\u6240\u6709\u670d\u52a1\u90fd\u4f1a\u7acb\u523b\u611f\u77e5\u8fd9\u4e2a\u95ee\u9898\u3002\u771f\u6b63\u7684\u9ebb\u70e6\u51fa\u73b0\u5728\u5185\u6838\u6216\u5de5\u4f5c\u8d1f\u8f7d\u9700\u8981\u8f83\u5927\u3001\u7269\u7406\u4e0a\u8fde\u7eed\u7684\u5185\u5b58\u533a\u57df\u65f6\uff0c\u6bd4\u5982\u66f4\u5927\u7684\u9875\u5206\u914d\u3001\u8fc1\u79fb\u76ee\u6807\u533a\u57df\uff0c\u6216\u8005\u67d0\u4e9b\u7279\u6b8a\u7f13\u51b2\u533a\u3002\u5185\u6838\u6587\u6863\u5c06 compaction \u63cf\u8ff0\u4e3a\u4e00\u79cd\u901a\u8fc7\u79fb\u52a8\u9875\u9762\u5e76\u805a\u5408\u7a7a\u95f2\u7a7a\u95f4\u3001\u8ba9\u66f4\u5927\u8fde\u7eed\u5206\u914d\u6210\u4e3a\u53ef\u80fd\u7684\u673a\u5236\uff0c\u8fd9\u6070\u6070\u8bf4\u660e\u788e\u7247\u5316\u672c\u8d28\u4e0a\u662f\u7269\u7406\u5e03\u5c40\u95ee\u9898\uff0c\u800c\u4e0d\u53ea\u662f\u7b80\u5355\u7684\u5bb9\u91cf\u95ee\u9898\u3002<\/p>\n<p>\u5bf9\u4e8e\u6280\u672f\u8bfb\u8005\u800c\u8a00\uff0c\u6700\u91cd\u8981\u7684\u533a\u5206\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u7a7a\u95f2\u5185\u5b58\u4e0d\u8db3<\/strong>\uff0c\u610f\u5473\u7740\u673a\u5668\u786e\u5b9e\u7f3a\u5c11\u53ef\u7528 RAM\u3002<\/li>\n<li><strong>\u788e\u7247\u5316\u4e25\u91cd<\/strong>\uff0c\u610f\u5473\u7740\u6574\u4f53\u5185\u5b58\u53ef\u80fd\u8db3\u591f\uff0c\u4f46\u5206\u914d\u5668\u65e0\u6cd5\u62fc\u51fa\u67d0\u4e2a\u5177\u4f53\u8bf7\u6c42\u6240\u9700\u7684\u5f62\u6001\u3002<\/li>\n<li><strong>\u6df7\u5408\u60c5\u51b5<\/strong>\u975e\u5e38\u5e38\u89c1\uff0c\u5c24\u5176\u662f\u5728\u90a3\u4e9b\u65e2\u63a5\u8fd1\u5bb9\u91cf\u4e0a\u9650\u3001\u53c8\u6574\u5929\u9ad8\u9891\u8fdb\u884c\u5185\u5b58\u7533\u8bf7\u548c\u91ca\u653e\u7684\u7e41\u5fd9\u8282\u70b9\u4e0a\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e5f\u6b63\u662f\u4e3a\u4ec0\u4e48\u4e00\u53f0\u670d\u52a1\u5668\u660e\u660e\u4ecd\u7136\u62a5\u544a\u6709\u53ef\u7528\u5185\u5b58\uff0c\u4f46\u67d0\u4e9b\u5185\u5b58\u7533\u8bf7\u4ecd\u7136\u4f1a\u5931\u8d25\u3001\u505c\u987f\uff0c\u6216\u8005\u89e6\u53d1\u5927\u91cf reclaim \u4e0e compaction \u6d3b\u52a8\u3002\u5185\u6838\u7684 buddy allocator \u6309 order \u8ddf\u8e2a\u7a7a\u95f2\u5757\uff0c\u5176 documented behavior \u975e\u5e38\u76f4\u63a5\uff1a\u4e00\u65e6\u9ad8\u9636\u7a7a\u95f2\u5757\u6d88\u5931\uff0c\u5927\u5757\u8fde\u7eed\u5185\u5b58\u5206\u914d\u5c31\u4f1a\u53d8\u5f97\u56f0\u96be\uff0c\u751a\u81f3\u4e0d\u53ef\u80fd\u3002<\/p>\n<h2><strong>\u4e3a\u4ec0\u4e48\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u670d\u52a1\u5668\u4f1a\u51fa\u73b0\u4e25\u91cd\u788e\u7247\u5316<\/strong><\/h2>\n<p>\u788e\u7247\u5316\u5f88\u5c11\u7531\u67d0\u4e00\u6b21\u7a81\u53d1\u4e8b\u4ef6\u76f4\u63a5\u5f15\u8d77\u3002\u66f4\u5e38\u89c1\u7684\u60c5\u51b5\u662f\uff0c\u5b83\u968f\u7740\u8fd0\u884c\u65f6\u957f\u3001\u5de5\u4f5c\u8d1f\u8f7d\u6296\u52a8\u4ee5\u53ca\u5206\u914d\u5668\u538b\u529b\u7684\u79ef\u7d2f\uff0c\u6162\u6162\u53d1\u5c55\u6210\u95ee\u9898\u3002\u90a3\u4e9b\u6301\u7eed\u521b\u5efa\u548c\u9500\u6bc1\u5de5\u4f5c\u8fdb\u7a0b\u3001\u7ebf\u7a0b\u3001\u7f13\u5b58\uff0c\u6216\u8005\u77ed\u751f\u547d\u5468\u671f\u5185\u5b58\u5bf9\u8c61\u7684\u7cfb\u7edf\uff0c\u5929\u7136\u66f4\u5bb9\u6613\u9047\u5230\u5b83\u3002\u518d\u53e0\u52a0\u4e0d\u5747\u8861\u7684 reclaim \u884c\u4e3a\u3001\u9875\u8fc1\u79fb\u4ee5\u53ca\u4e0d\u65ad\u53d8\u5316\u7684\u5de5\u4f5c\u96c6\uff0c\u5185\u5b58\u5e03\u5c40\u5c31\u4f1a\u9010\u6b65\u53d8\u5f97\u4e0d\u518d\u9002\u5408\u8f83\u5927\u7684\u5206\u914d\u8bf7\u6c42\u3002<\/p>\n<p>\u4ee5\u4e0b\u51e0\u7c7b\u6a21\u5f0f\u901a\u5e38\u4f1a\u8ba9\u95ee\u9898\u66f4\u4e25\u91cd\uff1a<\/p>\n<ol>\n<li><strong>\u9ad8\u9891\u5206\u914d\u4e0e\u91ca\u653e\uff1a<\/strong>\u4e0d\u540c\u5927\u5c0f\u5bf9\u8c61\u7684\u9891\u7e41\u7533\u8bf7\u548c\u91ca\u653e\uff0c\u4f1a\u7559\u4e0b\u4e0d\u89c4\u5219\u7684\u7a7a\u6d1e\u3002<\/li>\n<li><strong>\u957f\u670d\u52a1\u5468\u671f\uff1a<\/strong>\u5373\u4fbf\u884c\u4e3a\u826f\u597d\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u4e5f\u53ef\u80fd\u968f\u7740\u7cfb\u7edf\u201c\u8001\u5316\u201d\u800c\u8fdb\u5165\u788e\u7247\u5316\u72b6\u6001\u3002<\/li>\n<li><strong>\u540e\u53f0\u5185\u5b58\u538b\u529b\uff1a<\/strong>reclaim\u3001swap\u3001\u9875\u8fc1\u79fb\u4ee5\u53ca\u7f13\u5b58\u5468\u8f6c\uff0c\u90fd\u4f1a\u52a0\u5267\u5206\u914d\u5668\u538b\u529b\u3002<\/li>\n<li><strong>\u5927\u9875\u9700\u6c42\uff1a<\/strong>\u4f9d\u8d56\u8f83\u5927\u9875\u9762\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u5728 compaction \u53d8\u5f97\u66f4\u5403\u529b\u65f6\u66f4\u5bb9\u6613\u51fa\u73b0\u505c\u987f\u3002<\/li>\n<li><strong>\u865a\u62df\u5316\u6216\u9ad8\u5bc6\u5ea6\u5bb9\u5668\u8282\u70b9\uff1a<\/strong>\u591a\u4e2a\u79df\u6237\u6216\u591a\u4e2a\u5185\u5b58\u57df\u4f1a\u653e\u5927\u4e0d\u786e\u5b9a\u6027\u3002<\/li>\n<\/ol>\n<p>\u5185\u6838\u6587\u6863\u8fd8\u6307\u51fa\uff0c\u968f\u7740\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\u589e\u957f\uff0c\u66f4\u5927\u9875\u7684\u5206\u914d\u53ef\u80fd\u53d8\u5f97\u6602\u8d35\uff0c\u56e0\u4e3a compaction \u53ef\u80fd\u9700\u8981\u5728\u5185\u5b58\u4e2d\u590d\u5236\u6570\u636e\uff0c\u624d\u80fd\u817e\u51fa\u5408\u9002\u7684\u533a\u57df\u3002\u5bf9\u751f\u4ea7\u73af\u5883\u800c\u8a00\uff0c\u8fd9\u4e00\u70b9\u5f88\u5173\u952e\uff0c\u56e0\u4e3a\u6e05\u7406\u788e\u7247\u672c\u8eab\u7684\u6210\u672c\uff0c\u4e5f\u53ef\u80fd\u6210\u4e3a\u6027\u80fd\u95ee\u9898\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<h2><strong>\u4e25\u91cd\u788e\u7247\u5316\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4f1a\u5982\u4f55\u8868\u73b0<\/strong><\/h2>\n<p>\u788e\u7247\u5316\u901a\u5e38\u4e0d\u4f1a\u76f4\u63a5\u201c\u81ea\u62a5\u5bb6\u95e8\u201d\u3002\u5927\u591a\u6570\u56e2\u961f\u5e76\u4e0d\u662f\u56e0\u4e3a\u67d0\u4e2a\u4eea\u8868\u76d8\u660e\u786e\u5199\u7740\u201cfragmentation critical\u201d\u624d\u53d1\u73b0\u5b83\uff0c\u800c\u662f\u56e0\u4e3a\u5ef6\u8fdf\u5f00\u59cb\u53d8\u5f97\u6709\u566a\u58f0\u3001\u540e\u53f0\u7ef4\u62a4\u6210\u672c\u8d8a\u6765\u8d8a\u9ad8\uff0c\u6216\u8005\u5bf9\u5185\u5b58\u5206\u914d\u654f\u611f\u7684\u670d\u52a1\u53d8\u5f97\u8106\u5f31\u3002\u5728\u670d\u52a1\u5668\u79df\u7528\u96c6\u7fa4\u4e2d\uff0c\u8fd9\u4e9b\u8868\u73b0\u5f80\u5f80\u66f4\u50cf\u662f\u8fd0\u7ef4\u95ee\u9898\uff0c\u800c\u4e0d\u662f\u7eaf\u7406\u8bba\u95ee\u9898\u3002<\/p>\n<ul>\n<li>\u5373\u4f7f\u5e73\u5747\u5185\u5b58\u4f7f\u7528\u7387\u5e76\u4e0d\u5938\u5f20\uff0c\u4ecd\u4f1a\u51fa\u73b0\u95f4\u6b47\u6027\u7684\u5206\u914d\u5ef6\u8fdf<\/li>\n<li>\u5de5\u4f5c\u8d1f\u8f7d\u8fdb\u5165\u9ad8\u5185\u5b58\u9636\u6bb5\u65f6\uff0c\u51fa\u73b0\u610f\u5916\u505c\u987f<\/li>\n<li>\u5927\u9875\u5206\u914d\u5931\u8d25\uff0c\u6216\u8005\u5927\u9875\u673a\u5236\u7684\u6548\u679c\u4e0b\u964d<\/li>\n<li>\u5728\u4e1a\u52a1\u7e41\u5fd9\u7a97\u53e3\u671f\uff0ccompaction \u4e0e reclaim \u6d3b\u52a8\u660e\u663e\u589e\u591a<\/li>\n<li>\u770b\u8d77\u6765\u4e0e\u7a7a\u95f2\u5185\u5b58\u89c4\u6a21\u4e0d\u5339\u914d\u7684 out-of-memory \u4e8b\u4ef6<\/li>\n<\/ul>\n<p>\u5185\u6838\u6587\u6863\u672c\u8eab\u5c31\u5c06\u5916\u90e8\u788e\u7247\u5316\u4e0e\u5206\u914d\u5931\u8d25\u6a21\u5f0f\u8054\u7cfb\u8d77\u6765\uff0c\u5e76\u5efa\u8bae\u901a\u8fc7 <code>\/proc\/buddyinfo<\/code> \u548c <code>\/proc\/pagetypeinfo<\/code> \u7b49\u63a5\u53e3\u68c0\u67e5\u5206\u914d\u5668\u72b6\u6001\u3002\u8fd9\u4e9b\u89c6\u56fe\u53ef\u4ee5\u5e2e\u52a9\u786e\u8ba4\u9ad8\u9636\u7a7a\u95f2\u5757\u662f\u5426\u5df2\u88ab\u8017\u5c3d\uff0c\u4ee5\u53ca\u9875\u5757\u662f\u5426\u56e0\u6df7\u6742\u800c\u964d\u4f4e\u4e86 reclaim \u4e0e compaction \u7684\u6548\u7387\u3002<\/p>\n<h2><strong>\u5982\u4f55\u786e\u8ba4\u771f\u6b63\u7684\u95ee\u9898\u5c31\u662f\u788e\u7247\u5316<\/strong><\/h2>\n<p>\u5728\u5c1d\u8bd5\u201c\u6574\u7406\u201d\u5185\u5b58\u4e4b\u524d\uff0c\u9996\u5148\u8981\u786e\u8ba4\u4f60\u9762\u5bf9\u7684\u4e0d\u662f\u66f4\u7b80\u5355\u7684\u95ee\u9898\uff0c\u6bd4\u5982\u5185\u5b58\u4f7f\u7528\u91cf\u5931\u63a7\u3001\u9875\u7f13\u5b58\u8fc7\u5927\uff0c\u6216\u8005\u7528\u6237\u6001\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002\u788e\u7247\u5316\u8bca\u65ad\u6700\u6709\u6548\u7684\u65b9\u5f0f\uff0c\u662f\u628a\u5206\u914d\u5668\u5c42\u9762\u7684\u8bc1\u636e\u4e0e\u5e94\u7528\u884c\u4e3a\u7ed3\u5408\u8d77\u6765\u770b\u3002<\/p>\n<p>\u4e00\u4e2a\u5b9e\u7528\u7684\u68c0\u67e5\u6d41\u7a0b\u901a\u5e38\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u5148\u5224\u65ad\u7a7a\u95f2\u5185\u5b58\u662f\u5426\u771f\u7684\u4e0d\u8db3\uff0c\u8fd8\u662f\u53ea\u662f\u5e03\u5c40\u4e0d\u7406\u60f3\u3002<\/li>\n<li>\u68c0\u67e5 <code>\/proc\/buddyinfo<\/code> \u4e2d\u9ad8\u9636\u7a7a\u95f2\u5757\u7684\u53ef\u7528\u60c5\u51b5\u3002<\/li>\n<li>\u4f7f\u7528 <code>\/proc\/pagetypeinfo<\/code> \u4e86\u89e3\u4e0d\u540c migrate type \u4e0b\u7684\u7a7a\u95f2\u9875\u5206\u5e03\u3002<\/li>\n<li>\u89c2\u5bdf compaction \u4e0e reclaim \u6d3b\u52a8\u7684\u957f\u671f\u53d8\u5316\uff0c\u800c\u4e0d\u662f\u53ea\u770b\u5355\u6b21\u5feb\u7167\u3002<\/li>\n<li>\u628a\u5206\u914d\u5668\u538b\u529b\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u9ad8\u5cf0\u3001\u90e8\u7f72\u7a97\u53e3\u4ee5\u53ca\u91cd\u542f\u4e8b\u4ef6\u5bf9\u5e94\u8d77\u6765\u5206\u6790\u3002<\/li>\n<\/ol>\n<p>\u6839\u636e\u5185\u6838\u624b\u518c\u8bf4\u660e\uff0c<code>\/proc\/buddyinfo<\/code> \u672c\u8eab\u5c31\u662f\u7528\u4e8e\u8bca\u65ad\u788e\u7247\u5316\u7684\u91cd\u8981\u63a5\u53e3\uff0c\u800c\u5728\u788e\u7247\u5316\u4e25\u91cd\u7684\u7cfb\u7edf\u4e2d\uff0c\u9ad8\u9636\u8ba1\u6570\u5668\u5f80\u5f80\u4f1a\u51fa\u73b0\u5927\u91cf\u96f6\u503c\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u5185\u6838\u6587\u6863\u4e5f\u89e3\u91ca\u4e86 <code>\/proc\/pagetypeinfo<\/code> \u80fd\u8865\u5145 migrate type \u7ef4\u5ea6\u7684\u53ef\u89c1\u6027\uff0c\u8fd9\u5bf9\u90a3\u79cd\u201c\u539f\u59cb\u7a7a\u95f2\u9875\u6570\u91cf\u770b\u8d77\u6765\u4e0d\u5dee\u3001\u4f46\u5916\u90e8\u788e\u7247\u5316\u4f9d\u7136\u4e25\u91cd\u201d\u7684\u573a\u666f\u5c24\u5176\u6709\u5e2e\u52a9\u3002<\/p>\n<h2><strong>\u5982\u4f55\u5728\u4e0d\u9760\u731c\u6d4b\u7684\u60c5\u51b5\u4e0b\u51cf\u5c11\u788e\u7247\u5316<\/strong><\/h2>\n<p>\u9762\u5bf9\u4e25\u91cd\u788e\u7247\u5316\uff0c\u5e76\u4e0d\u5b58\u5728\u4e00\u4e2a\u4e07\u80fd\u6309\u94ae\u3002\u6b63\u786e\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4f60\u662f\u9700\u8981\u5feb\u901f\u6b62\u8840\uff0c\u8fd8\u662f\u5e0c\u671b\u771f\u6b63\u5efa\u7acb\u957f\u671f\u4fee\u590d\u65b9\u6848\u3002\u4ece\u6280\u672f\u4e0a\u8bb2\uff0c\u53ef\u4ee5\u628a\u5904\u7406\u601d\u8def\u5206\u6210\u51e0\u5c42\uff1a\u8fd0\u7ef4\u7ea7\u91cd\u7f6e\u3001\u5de5\u4f5c\u8d1f\u8f7d\u536b\u751f\u6cbb\u7406\uff0c\u4ee5\u53ca\u9762\u5411\u5206\u914d\u5668\u7684\u8c03\u4f18\u3002<\/p>\n<h3>1. \u9700\u8981\u5feb\u901f\u7f13\u89e3\u65f6\uff0c\u8fdb\u884c\u53ef\u63a7\u91cd\u542f<\/h3>\n<p>\u5982\u679c\u788e\u7247\u5316\u5df2\u7ecf\u5f88\u4e25\u91cd\uff0c\u5e76\u4e14\u7528\u6237\u4fa7\u5f71\u54cd\u660e\u663e\uff0c\u90a3\u4e48\u5728\u7ef4\u62a4\u7a97\u53e3\u5185\u91cd\u542f\u67d0\u4e2a\u670d\u52a1\uff0c\u6216\u8005\u76f4\u63a5\u91cd\u542f\u8282\u70b9\uff0c\u5f80\u5f80\u53ef\u4ee5\u5feb\u901f\u6062\u590d\u66f4\u5e72\u51c0\u7684\u5185\u5b58\u5e03\u5c40\u3002\u8fd9\u79cd\u529e\u6cd5\u672a\u5fc5\u4f18\u96c5\uff0c\u4f46\u5728\u5de5\u7a0b\u5b9e\u8df5\u4e2d\u5b8c\u5168\u5408\u7406\u3002\u5b83\u7684\u4ee3\u4ef7\u4e5f\u5f88\u6e05\u695a\uff1a\u4f60\u6062\u590d\u4e86\u5206\u914d\u5668\u72b6\u6001\uff0c\u5374\u5e76\u6ca1\u6709\u6d88\u9664\u5bfc\u81f4\u788e\u7247\u5316\u7684\u6839\u672c\u5de5\u4f5c\u8d1f\u8f7d\u6a21\u5f0f\u3002<\/p>\n<h3>2. \u964d\u4f4e\u5de5\u4f5c\u8d1f\u8f7d\u4e2d\u7684\u5206\u914d\u6296\u52a8<\/h3>\n<p>\u5f88\u591a\u788e\u7247\u5316\u95ee\u9898\u5176\u5b9e\u8d77\u6e90\u4e8e\u5185\u6838\u4e4b\u4e0a\u3002\u5982\u679c\u67d0\u4e2a\u670d\u52a1\u6301\u7eed\u7533\u8bf7\u5e76\u91ca\u653e\u5927\u5c0f\u6df7\u6742\u7684\u5bf9\u8c61\uff0c\u5206\u914d\u5668\u8fdf\u65e9\u8981\u4e3a\u6b64\u4ed8\u51fa\u4ee3\u4ef7\u3002\u5728\u67b6\u6784\u5141\u8bb8\u7684\u60c5\u51b5\u4e0b\uff0c\u5e94\u5c3d\u91cf\u8ba9\u5bf9\u8c61\u751f\u547d\u5468\u671f\u66f4\u7a33\u5b9a\uff0c\u590d\u7528\u7f13\u51b2\u533a\uff0c\u6279\u91cf\u5904\u7406\u4efb\u52a1\uff0c\u5e76\u907f\u514d\u75c5\u6001\u7684\u77ed\u65f6\u5206\u914d\u7a81\u53d1\u3002\u76ee\u6807\u5e76\u4e0d\u662f\u62bd\u8c61\u610f\u4e49\u4e0a\u7684\u201c\u5c11\u7528\u70b9\u5185\u5b58\u201d\uff0c\u800c\u662f\u201c\u51cf\u5c11\u5bf9\u5206\u914d\u5668\u4e0d\u53cb\u597d\u7684\u5206\u914d\u6a21\u5f0f\u201d\u3002<\/p>\n<h3>3. \u8c28\u614e\u8c03\u4f18\u5185\u5b58\u884c\u4e3a<\/h3>\n<p>\u865a\u62df\u5185\u5b58\u5b50\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e9b\u63a7\u5236\u9879\uff0c\u53ef\u5f71\u54cd reclaim \u548c compaction \u7684\u884c\u4e3a\u3002\u5185\u6838\u5173\u4e8e VM sysctl interface \u7684\u6587\u6863\u6307\u51fa\uff0c\u7cfb\u7edf\u53ef\u4ee5\u5bf9\u788e\u7247\u5316\u654f\u611f\u5ea6\u548c compaction \u884c\u4e3a\u8fdb\u884c\u8c03\u6574\uff0c\u5e76\u4e14\u5b50\u7cfb\u7edf\u80fd\u591f\u533a\u5206\u7531\u4f4e\u5185\u5b58\u5f15\u53d1\u7684\u5206\u914d\u5931\u8d25\uff0c\u4e0e\u7531\u788e\u7247\u5316\u5f15\u53d1\u7684\u5206\u914d\u5931\u8d25\u3002\u8fd9\u4e9b\u8bbe\u7f6e\u5fc5\u987b\u7ecf\u8fc7\u8c28\u614e\u6d4b\u8bd5\uff0c\u56e0\u4e3a\u8fc7\u4e8e\u6fc0\u8fdb\u7684\u8c03\u4f18\uff0c\u53ef\u80fd\u4f1a\u628a\u541e\u5410\u91cf\u6362\u6210\u5ef6\u8fdf\uff0c\u6216\u8005\u8ba9 compaction \u6bd4\u4f60\u671f\u671b\u7684\u66f4\u9891\u7e41\u5730\u8fd0\u884c\u3002<\/p>\n<h3>4. \u91cd\u65b0\u8bc4\u4f30\u5927\u9875\u7b56\u7565<\/h3>\n<p>\u8f83\u5927\u7684\u9875\u9762\u5728\u67d0\u4e9b\u5de5\u4f5c\u8d1f\u8f7d\u4e2d\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\uff0c\u4f46\u5b83\u4eec\u4e5f\u4f1a\u8ba9\u788e\u7247\u5316\u95ee\u9898\u66f4\u65e9\u66b4\u9732\u51fa\u6765\uff0c\u56e0\u4e3a\u5b83\u4eec\u9700\u8981\u5408\u9002\u7684\u8fde\u7eed\u7269\u7406\u5185\u5b58\u4f5c\u4e3a\u652f\u6491\u3002\u5982\u679c\u4f60\u7684\u73af\u5883\u4f9d\u8d56\u5927\u9875\uff0c\u5c31\u5e94\u8be5\u91cd\u70b9\u76d1\u63a7 compaction \u505c\u987f\u662f\u5426\u4f1a\u968f\u7740\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\u589e\u957f\u800c\u589e\u52a0\u3002\u5185\u6838\u6587\u6863\u660e\u786e\u63d0\u9192\uff0c\u968f\u7740\u7cfb\u7edf\u201c\u8001\u5316\u201d\uff0c\u7531\u4e8e compaction \u5de5\u4f5c\u91cf\u52a0\u5927\uff0c\u66f4\u5927\u9875\u7684\u5206\u914d\u53ef\u80fd\u53d8\u5f97\u6602\u8d35\u3002<\/p>\n<h3>5. \u7ef4\u6301\u53ef\u56de\u6536\u4e0e\u53ef\u8fc1\u79fb\u5185\u5b58\u7684\u5065\u5eb7\u72b6\u6001<\/h3>\n<p>\u5f53\u5185\u5b58\u53ef\u4ee5\u88ab\u987a\u5229 reclaim \u6216 migration \u65f6\uff0c\u788e\u7247\u5316\u66f4\u5bb9\u6613\u6cbb\u7406\u3002\u5185\u6838\u56f4\u7ed5 migrate type \u7ed9\u51fa\u788e\u7247\u5316\u6307\u5bfc\u5e76\u975e\u5076\u7136\uff1a\u4e00\u65e6\u9875\u5757\u88ab\u4e0d\u540c\u7c7b\u578b\u9875\u9762\u6df7\u6742\u5360\u636e\uff0c\u7075\u6d3b\u6027\u5c31\u4f1a\u4e0b\u964d\u3002\u5982\u679c\u8282\u70b9\u4e2d\u5145\u6ee1\u4e86\u96be\u4ee5\u8fc1\u79fb\u7684\u5206\u914d\u5bf9\u8c61\uff0c\u90a3\u4e48 compaction \u53ef\u9009\u62e9\u7684\u7a7a\u95f4\u5c31\u4f1a\u66f4\u5c11\uff0c\u5206\u914d\u5668\u538b\u529b\u4e5f\u4f1a\u6301\u7eed\u5347\u9ad8\u3002<\/p>\n<h2><strong>\u5f53\u788e\u7247\u5316\u4e25\u91cd\u65f6\uff0c\u4e0d\u8981\u8fd9\u6837\u505a<\/strong><\/h2>\n<p>\u5de5\u7a0b\u5e08\u5728\u538b\u529b\u4e4b\u4e0b\uff0c\u5f80\u5f80\u4f1a\u672c\u80fd\u5730\u5c1d\u8bd5\u4e00\u4e9b\u770b\u4f3c\u7b80\u5355\u7684\u8865\u6551\u52a8\u4f5c\uff0c\u4f46\u8fd9\u4e9b\u505a\u6cd5\u5e38\u5e38\u5e26\u6765\u66f4\u591a\u566a\u58f0\uff0c\u800c\u4e0d\u662f\u66f4\u591a\u4ef7\u503c\u3002\u788e\u7247\u5316\u5e76\u4e0d\u662f\u9760\u968f\u610f\u6e05\u7f13\u5b58\u3001\u4e34\u65f6\u4e71\u6539\u53c2\u6570\uff0c\u6216\u590d\u5236\u7c98\u8d34\u65e7\u8bba\u575b\u91cc\u7684\u5355\u6b21\u547d\u4ee4\u5c31\u80fd\u771f\u6b63\u89e3\u51b3\u7684\u3002\u8fd9\u4e9b\u64cd\u4f5c\u4e5f\u8bb8\u4f1a\u6682\u65f6\u6539\u53d8\u5185\u5b58\u5f62\u6001\uff0c\u4f46\u5982\u679c\u6ca1\u6709\u8bca\u65ad\u652f\u6491\uff0c\u5b83\u4eec\u540c\u6837\u53ef\u80fd\u7834\u574f\u7f13\u5b58\u70ed\u5ea6\u3001\u628a\u538b\u529b\u8f6c\u79fb\u5230\u522b\u7684\u5730\u65b9\uff0c\u751a\u81f3\u63a9\u76d6\u771f\u6b63\u7684\u89e6\u53d1\u56e0\u7d20\u3002<\/p>\n<ul>\n<li>\u4e0d\u8981\u628a\u9ad8\u5185\u5b58\u5360\u7528\u76f4\u63a5\u7b49\u540c\u4e8e\u788e\u7247\u5316\u3002<\/li>\n<li>\u4e0d\u8981\u628a reclaim \u6d3b\u52a8\u7684\u5b58\u5728\u5f53\u6210\u8c03\u4f18\u9519\u8bef\u7684\u76f4\u63a5\u8bc1\u636e\u3002<\/li>\n<li>\u4e0d\u8981\u5728\u751f\u4ea7\u8282\u70b9\u4e0a\u5f3a\u884c\u505a\u4f4e\u5c42\u4fee\u6539\uff0c\u5374\u6ca1\u6709\u56de\u6eda\u8def\u5f84\u3002<\/li>\n<li>\u4e0d\u8981\u5ffd\u89c6\u5de5\u4f5c\u8d1f\u8f7d\u8bbe\u8ba1\uff0c\u53ea\u76ef\u7740\u5185\u6838\u53c2\u6570\u3002<\/li>\n<\/ul>\n<p>\u66f4\u6df1\u4e00\u5c42\u7684\u7ecf\u9a8c\u662f\uff1a\u788e\u7247\u5316\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u7cfb\u7edf\u6027\u95ee\u9898\u3002\u5206\u914d\u5668\u3001\u5185\u6838\u7684 compaction \u8def\u5f84\uff0c\u4ee5\u53ca\u5e94\u7528\u884c\u4e3a\u4e4b\u95f4\u76f8\u4e92\u4f5c\u7528\u3002\u5982\u679c\u4f60\u53ea\u4f18\u5316\u5176\u4e2d\u4e00\u5c42\uff0c\u6536\u76ca\u5f80\u5f80\u53ea\u662f\u6682\u65f6\u7684\u3002<\/p>\n<h2><strong>\u9762\u5411\u670d\u52a1\u5668\u79df\u7528\u4e0e\u670d\u52a1\u5668\u6258\u7ba1\u8fd0\u7ef4\u7684\u9884\u9632\u7b56\u7565<\/strong><\/h2>\n<p>\u5bf9\u4e8e\u8fd0\u884c\u670d\u52a1\u5668\u79df\u7528\u6216\u670d\u52a1\u5668\u6258\u7ba1\u57fa\u7840\u8bbe\u65bd\u7684\u56e2\u961f\u6765\u8bf4\uff0c\u9884\u9632\u6c38\u8fdc\u6bd4\u6e05\u7406\u66f4\u4fbf\u5b9c\u3002\u788e\u7247\u5316\u6700\u559c\u6b22\u5728\u7f3a\u4e4f\u7ba1\u7406\u7684\u6f02\u79fb\u4e2d\u6ecb\u751f\uff0c\u56e0\u6b64\uff0c\u4e00\u4e2a\u597d\u7684\u8fd0\u7ef4\u6a21\u578b\u5e94\u5f53\u628a\u91cd\u70b9\u653e\u5728\u53ef\u89c2\u6d4b\u6027\u3001\u5de5\u4f5c\u8d1f\u8f7d\u7eaa\u5f8b\u6027\u4ee5\u53ca\u5468\u671f\u6027\u7ef4\u62a4\u4e0a\uff0c\u800c\u4e0d\u662f\u7b49\u4e8b\u6545\u53d1\u751f\u540e\u518d\u8fdb\u884c\u201c\u82f1\u96c4\u5f0f\u6551\u706b\u201d\u3002<\/p>\n<ol>\n<li><strong>\u6309\u8fd0\u884c\u65f6\u957f\u8ffd\u8e2a\u5206\u914d\u5668\u5065\u5eb7\u72b6\u6001\uff1a<\/strong>\u4e0d\u8981\u53ea\u770b\u7a7a\u95f2\u5185\u5b58\uff0c\u8fd8\u8981\u5173\u6ce8\u9ad8\u9636\u7a7a\u95f2\u5757\u7684\u53d8\u5316\u3002<\/li>\n<li><strong>\u5206\u6790\u9ad8\u6296\u52a8\u670d\u52a1\uff1a<\/strong>\u8bc6\u522b\u90a3\u4e9b\u6301\u7eed\u91cd\u5851\u5185\u5b58\u5e03\u5c40\u7684\u8fdb\u7a0b\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7ef4\u62a4\u7a97\u53e3\uff1a<\/strong>\u5982\u679c\u67d0\u4e00\u7c7b\u8282\u70b9\u4f1a\u968f\u7740\u8fd0\u884c\u65f6\u957f\u7a33\u5b9a\u9000\u5316\uff0c\u5c31\u5e94\u5728\u95ee\u9898\u53ef\u89c1\u4e4b\u524d\u4e3b\u52a8\u8f6e\u6362\u3002<\/li>\n<li><strong>\u9694\u79bb\u5de5\u4f5c\u8d1f\u8f7d\uff1a<\/strong>\u907f\u514d\u5728\u540c\u4e00\u8282\u70b9\u4e0a\u6df7\u5e03\u5bf9\u5206\u914d\u654f\u611f\u7684\u4efb\u52a1\u4e0e\u9ad8\u566a\u58f0\u90bb\u5c45\u3002<\/li>\n<li><strong>\u5728\u9884\u751f\u4ea7\u73af\u5883\u9a8c\u8bc1 VM \u8c03\u4f18\uff1a<\/strong>\u5f88\u5c0f\u7684\u6539\u52a8\u4e5f\u53ef\u80fd\u6539\u53d8 compaction \u9891\u7387\u4e0e\u505c\u987f\u7279\u5f81\u3002<\/li>\n<\/ol>\n<p>\u8fd9\u4e9b\u4e60\u60ef\u6bd4\u82b1\u54e8\u7684\u6280\u5de7\u66f4\u91cd\u8981\u3002\u5185\u6838\u672c\u8eab\u5df2\u7ecf\u63d0\u4f9b\u4e86 asynchronous \u548c direct compaction \u7b49\u673a\u5236\uff1b\u8fd0\u7ef4\u4eba\u5458\u771f\u6b63\u9700\u8981\u505a\u7684\uff0c\u662f\u907f\u514d\u628a\u7cfb\u7edf\u63a8\u5411\u4e00\u79cd\u5fc5\u987b\u957f\u671f\u4f9d\u8d56\u8fd9\u4e9b\u673a\u5236\u3001\u4e14\u4ee3\u4ef7\u8d8a\u6765\u8d8a\u9ad8\u7684\u5185\u5b58\u5e03\u5c40\u3002<\/p>\n<h2><strong>\u4e00\u4e2a\u52a1\u5b9e\u7684\u6e05\u7406\u884c\u52a8\u624b\u518c<\/strong><\/h2>\n<p>\u5982\u679c\u4f60\u9700\u8981\u4e3a\u4e00\u53f0\u72b6\u6001\u4e0d\u4f73\u7684\u8282\u70b9\u51c6\u5907\u4e00\u4e2a\u7b80\u660e\u54cd\u5e94\u65b9\u6848\uff0c\u53ef\u4ee5\u91c7\u7528\u4e0b\u9762\u8fd9\u4e2a\u987a\u5e8f\uff1a<\/p>\n<ol>\n<li>\u5148\u7528\u5206\u914d\u5668\u5c42\u9762\u7684\u8bc1\u636e\u786e\u8ba4\u95ee\u9898\uff0c\u800c\u4e0d\u662f\u53ea\u76ef\u7740\u9ad8\u4f7f\u7528\u7387\u56fe\u8868\u3002<\/li>\n<li>\u6d4b\u91cf\u9ad8\u9636\u7a7a\u95f2\u5757\u662f\u5426\u5df2\u7ecf\u660e\u663e\u584c\u7f29\u3002<\/li>\n<li>\u627e\u51fa\u788e\u7247\u5316\u660e\u663e\u6076\u5316\u65f6\u5bf9\u5e94\u7684\u670d\u52a1\u6216\u65f6\u95f4\u7a97\u53e3\u3002<\/li>\n<li>\u4f18\u5148\u91c7\u7528\u5f71\u54cd\u6700\u5c0f\u7684\u7f13\u89e3\u65b9\u5f0f\uff0c\u4f8b\u5982\u53ef\u63a7\u7684\u670d\u52a1\u91cd\u542f\u3002<\/li>\n<li>\u5b89\u6392\u66f4\u6df1\u5c42\u6b21\u7684\u6539\u8fdb\uff1a\u4fee\u590d\u5206\u914d\u6a21\u5f0f\u3001\u9694\u79bb\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u4ee5\u53ca\u7ecf\u8fc7\u9a8c\u8bc1\u7684 VM \u8c03\u4f18\u3002<\/li>\n<\/ol>\n<p>\u8fd9\u6837\u7684\u6d41\u7a0b\u53ef\u4ee5\u8ba9\u6545\u969c\u5904\u7406\u5efa\u7acb\u5728\u5185\u6838\u73b0\u5b9e\u4e4b\u4e0a\uff0c\u800c\u4e0d\u662f\u5efa\u7acb\u5728\u731c\u6d4b\u4e4b\u4e0a\u3002\u5b83\u4e5f\u4e3a\u4f60\u63d0\u4f9b\u4e86\u4e00\u6761\u4ece\u75c7\u72b6\u7f13\u89e3\u8d70\u5411\u7ed3\u6784\u6027\u9884\u9632\u7684\u8def\u5f84\uff0c\u800c\u8fd9\u6b63\u662f\u6210\u719f\u670d\u52a1\u5668\u79df\u7528\u8fd0\u7ef4\u4f53\u7cfb\u771f\u6b63\u9700\u8981\u7684\u80fd\u529b\u3002<\/p>\n<h2><strong>\u603b\u7ed3<\/strong><\/h2>\n<p>\u4e25\u91cd\u7684\u670d\u52a1\u5668\u5185\u5b58\u788e\u7247\u5316\uff0c\u5f80\u5f80\u4e0d\u662f\u4e00\u6b21\u5267\u70c8\u6545\u969c\uff0c\u800c\u662f\u5206\u914d\u5668\u72b6\u6001\u9010\u6b65\u8001\u5316\u7684\u7ed3\u679c\u3002\u673a\u5668\u770b\u8d77\u6765\u4ecd\u7136\u201c\u6709\u5185\u5b58\u201d\uff0c\u4f46\u8fd9\u4e9b\u5185\u5b58\u5df2\u7ecf\u4e0d\u518d\u662f\u5185\u6838\u6216\u5de5\u4f5c\u8d1f\u8f7d\u6240\u9700\u8981\u7684\u5f62\u6001\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5728\u76f4\u63a5\u68c0\u67e5\u5206\u914d\u5668\u72b6\u6001\u4e4b\u524d\uff0c\u95ee\u9898\u5e38\u5e38\u663e\u5f97\u6251\u6714\u8ff7\u79bb\u3002\u5728\u4e00\u4e2a\u6709\u7eaa\u5f8b\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\uff0c\u6700\u6709\u6548\u7684\u7b56\u7565\u5176\u5b9e\u5f88\u6e05\u6670\uff1a\u901a\u8fc7\u6b63\u786e\u7684\u5185\u6838\u63a5\u53e3\u786e\u8ba4\u788e\u7247\u5316\uff0c\u51cf\u5c11\u5bf9\u5206\u914d\u5668\u4e0d\u53cb\u597d\u7684\u5206\u914d\u6296\u52a8\uff0c\u4fdd\u5b88\u5730\u8c03\u4f18\u865a\u62df\u5185\u5b58\u884c\u4e3a\uff0c\u5e76\u5728\u8282\u70b9\u8001\u5316\u5230 compaction 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