{"id":173475,"date":"2024-11-07T18:20:18","date_gmt":"2024-11-07T10:20:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173475\/"},"modified":"2024-11-07T18:20:18","modified_gmt":"2024-11-07T10:20:18","slug":"%e5%a6%82%e4%bd%95%e5%90%88%e7%90%86%e5%88%86%e9%85%8dsql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e5%ad%98%ef%bc%9f-sql%e5%88%86%e9%85%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e5%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173475\/","title":{"rendered":"\u5982\u4f55\u5408\u7406\u5206\u914dSQL\u6578\u64da\u5eab\u5167\u5b58\uff1f (sql\u5206\u914d\u6578\u64da\u5eab\u5167\u5b58)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%90%88%e7%90%86%e5%88%86%e9%85%8dsql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e5%ad%98%ef%bc%9f-GDXXhraKbA\">\u5982\u4f55\u5408\u7406\u5206\u914dSQL\u6578\u64da\u5eab\u5167\u5b58\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u5408\u7406\u5206\u914d\u5167\u5b58\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u97ff\u61c9\u901f\u5ea6\uff0c\u9084\u80fd\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u5206\u914dSQL\u6578\u64da\u5eab\u7684\u5167\u5b58\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u5efa\u8b70\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e5%85%a7%e5%ad%98%e5%88%86%e9%85%8d%e7%9a%84%e9%87%8d%e8%a6%81%e6%80%a7-GDXXhraKbA\">\u5167\u5b58\u5206\u914d\u7684\u91cd\u8981\u6027<\/h2>\n<p>\u5167\u5b58\u662f\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u4e00\u500b\u95dc\u9375\u7684\u8cc7\u6e90\u3002\u5b83\u5f71\u97ff\u8457\u67e5\u8a62\u7684\u57f7\u884c\u901f\u5ea6\u3001\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u6548\u7387\uff0c\u4ee5\u53ca\u6574\u9ad4\u7684\u7cfb\u7d71\u6027\u80fd\u3002\u82e5\u5167\u5b58\u5206\u914d\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\uff0c\u751a\u81f3\u7cfb\u7d71\u5d29\u6f70\u3002\u56e0\u6b64\uff0c\u5408\u7406\u7684\u5167\u5b58\u5206\u914d\u7b56\u7565\u662f\u6bcf\u500b\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002<\/p>\n<h2 id=\"%e4%ba%86%e8%a7%a3sql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%85%a7%e5%ad%98%e7%b5%90%e6%a7%8b-GDXXhraKbA\">\u4e86\u89e3SQL\u6578\u64da\u5eab\u7684\u5167\u5b58\u7d50\u69cb<\/h2>\n<p>\u5728\u6df1\u5165\u5167\u5b58\u5206\u914d\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3SQL\u6578\u64da\u5eab\u7684\u5167\u5b58\u7d50\u69cb\u3002\u4e00\u822c\u4f86\u8aaa\uff0cSQL\u6578\u64da\u5eab\u7684\u5167\u5b58\u4e3b\u8981\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>\u7de9\u885d\u6c60\uff08Buffer Pool\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u6578\u64da\u9801\u9762\uff0c\u6e1b\u5c11\u78c1\u789fI\/O\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u67e5\u8a62\u7de9\u5b58\uff08Query Cache\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u67e5\u8a62\u7d50\u679c\uff0c\u4ee5\u52a0\u5feb\u91cd\u8907\u67e5\u8a62\u7684\u901f\u5ea6\u3002<\/li>\n<li><strong>\u6392\u5e8f\u7de9\u5b58\uff08Sort Buffer\uff09<\/strong>\uff1a\u7528\u65bc\u6392\u5e8f\u64cd\u4f5c\u7684\u81e8\u6642\u5b58\u5132\u3002<\/li>\n<li><strong>\u9023\u63a5\u7de9\u5b58\uff08Connection Cache\uff09<\/strong>\uff1a\u7528\u65bc\u7ba1\u7406\u7528\u6236\u9023\u63a5\u7684\u5167\u5b58\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%85%a7%e5%ad%98%e5%88%86%e9%85%8d%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-GDXXhraKbA\">\u5167\u5b58\u5206\u914d\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<h3 id=\"1-%e7%a2%ba%e5%ae%9a%e5%85%a7%e5%ad%98%e9%9c%80%e6%b1%82-GDXXhraKbA\">1. \u78ba\u5b9a\u5167\u5b58\u9700\u6c42<\/h3>\n<p>\u5728\u9032\u884c\u5167\u5b58\u5206\u914d\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a55\u4f30\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002\u53ef\u4ee5\u901a\u904e\u76e3\u63a7\u5de5\u5177\u4f86\u5206\u6790\u7576\u524d\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u4e86\u89e3\u54ea\u4e9b\u64cd\u4f5c\u6700\u8017\u8cbb\u5167\u5b58\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>SHOW STATUS LIKE 'Innodb_buffer_pool_size';<\/code> \u4f86\u67e5\u770b\u7576\u524d\u7684\u7de9\u885d\u6c60\u5927\u5c0f\u3002<\/p>\n<h3 id=\"2-%e8%a8%ad%e5%ae%9a%e7%b7%a9%e8%a1%9d%e6%b1%a0%e5%a4%a7%e5%b0%8f-GDXXhraKbA\">2. \u8a2d\u5b9a\u7de9\u885d\u6c60\u5927\u5c0f<\/h3>\n<p>\u5c0d\u65bc\u4f7f\u7528InnoDB\u5b58\u5132\u5f15\u64ce\u7684\u6578\u64da\u5eab\uff0c\u7de9\u885d\u6c60\u7684\u5927\u5c0f\u662f\u6700\u91cd\u8981\u7684\u5167\u5b58\u53c3\u6578\u3002\u4e00\u822c\u5efa\u8b70\u5c07\u5176\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768470%-80%\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>SET GLOBAL innodb_buffer_pool_size = 2 * 1024 * 1024 * 1024; -- \u8a2d\u7f6e\u70ba2GB<\/code><\/pre>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98-GDXXhraKbA\">3. \u8abf\u6574\u67e5\u8a62\u7de9\u5b58<\/h3>\n<p>\u67e5\u8a62\u7de9\u5b58\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u904e\u591a\u7684\u67e5\u8a62\u7de9\u5b58\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u5efa\u8b70\u6839\u64da\u5be6\u969b\u67e5\u8a62\u7684\u983b\u7387\u548c\u985e\u578b\u4f86\u8abf\u6574\u67e5\u8a62\u7de9\u5b58\u7684\u5927\u5c0f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>SET GLOBAL query_cache_size = 1048576; -- \u8a2d\u7f6e\u70ba1MB<\/code><\/pre>\n<h3 id=\"4-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-GDXXhraKbA\">4. \u76e3\u63a7\u548c\u8abf\u6574<\/h3>\n<p>\u5167\u5b58\u5206\u914d\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u4efb\u52d9\uff0c\u800c\u662f\u9700\u8981\u6301\u7e8c\u76e3\u63a7\u548c\u8abf\u6574\u7684\u904e\u7a0b\u3002\u4f7f\u7528\u6027\u80fd\u76e3\u63a7\u5de5\u5177\uff08\u5982MySQL\u7684Performance Schema\uff09\u4f86\u8ddf\u8e64\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u4e26\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-GDXXhraKbA\">\u7d50\u8ad6<\/h2>\n<p>\u5408\u7406\u5206\u914dSQL\u6578\u64da\u5eab\u5167\u5b58\u662f\u78ba\u4fdd\u7cfb\u7d71\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u3002\u901a\u904e\u4e86\u89e3\u5167\u5b58\u7d50\u69cb\u3001\u8a55\u4f30\u9700\u6c42\u3001\u8a2d\u5b9a\u5408\u9069\u7684\u7de9\u885d\u6c60\u548c\u67e5\u8a62\u7de9\u5b58\u5927\u5c0f\uff0c\u4ee5\u53ca\u6301\u7e8c\u76e3\u63a7\u548c\u8abf\u6574\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6709\u8db3\u5920\u7684\u8cc7\u6e90\u4f86\u652f\u6301\u6578\u64da\u5eab\u7684\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5408\u7406\u5206\u914dSQL\u6578\u64da\u5eab\u5167\u5b58\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u8655\u7406\u7684\u7a69\u5b9a\u6027\u548c\u5feb\u901f\u97ff\u61c9\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-173475","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=173475"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173475\/revisions"}],"predecessor-version":[{"id":173476,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173475\/revisions\/173476"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}