{"id":176743,"date":"2024-11-08T12:22:21","date_gmt":"2024-11-08T04:22:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176743\/"},"modified":"2024-11-08T12:22:21","modified_gmt":"2024-11-08T04:22:21","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e6%aa%a2%e6%9f%a5%e6%98%af%e5%90%a6mysqld%e6%88%96%e5%85%b6%e4%bb%96%e9%80%b2%e7%a8%8b%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176743\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u5167\u5b58\u4e0d\u8db3;\u6aa2\u67e5\u662f\u5426mysqld\u6216\u5176\u4ed6\u9032\u7a0b\u4f7f\u7528\u4e86\u6240\u6709\u53ef\u7528\u5167\u5b58"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e6%aa%a2%e6%9f%a5%e6%98%af%e5%90%a6mysqld%e6%88%96%e5%85%b6%e4%bb%96%e9%80%b2%e7%a8%8b%e4%bd%bf-DAGBDvNzvn\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u5167\u5b58\u4e0d\u8db3;\u6aa2\u67e5\u662f\u5426mysqld\u6216\u5176\u4ed6\u9032\u7a0b\u4f7f\u7528\u4e86\u6240\u6709\u53ef\u7528\u5167\u5b58<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u5167\u5b58\u4e0d\u8db3\u7684\u932f\u8aa4\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u9ad8\u8ca0\u8f09\u7684\u74b0\u5883\u4e2d\u3002\u7576MySQL\u670d\u52d9\u5668\u7121\u6cd5\u7372\u53d6\u8db3\u5920\u7684\u5167\u5b58\u4f86\u8655\u7406\u8acb\u6c42\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u6216\u670d\u52d9\u4e2d\u65b7\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6aa2\u67e5\u548c\u4fee\u5fa9\u9019\u4e00\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u5efa\u8b70\u3002<\/p>\n<h2 id=\"1-%e7%a2%ba%e8%aa%8d%e5%85%a7%e5%ad%98%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-DAGBDvNzvn\">1. \u78ba\u8a8d\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6aa2\u67e5\u7cfb\u7d71\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u7576\u524d\u7684\u5167\u5b58\u4f7f\u7528\u72c0\u6cc1\uff1a<\/p>\n<pre><code>free -m<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u5c07\u986f\u793a\u7cfb\u7d71\u7684\u7e3d\u5167\u5b58\u3001\u5df2\u7528\u5167\u5b58\u3001\u53ef\u7528\u5167\u5b58\u7b49\u4fe1\u606f\u3002\u7279\u5225\u6ce8\u610f\u201c\u53ef\u7528\u5167\u5b58\u201d\u9019\u4e00\u9805\uff0c\u5982\u679c\u5b83\u7684\u6578\u503c\u975e\u5e38\u4f4e\uff0c\u5247\u53ef\u80fd\u662f\u5c0e\u81f4MySQL\u932f\u8aa4\u7684\u539f\u56e0\u3002<\/p>\n<h2 id=\"2-%e6%aa%a2%e6%9f%a5mysqld%e9%80%b2%e7%a8%8b%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%bf%e7%94%a8-DAGBDvNzvn\">2. \u6aa2\u67e5mysqld\u9032\u7a0b\u7684\u5167\u5b58\u4f7f\u7528<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u6aa2\u67e5MySQL\u670d\u52d9\u9032\u7a0b\uff08mysqld\uff09\u662f\u5426\u4f7f\u7528\u4e86\u904e\u591a\u7684\u5167\u5b58\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770bmysqld\u9032\u7a0b\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>ps aux | grep mysqld<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u8207mysqld\u76f8\u95dc\u7684\u9032\u7a0b\u53ca\u5176\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002\u6ce8\u610f\u67e5\u770b\u201c%MEM\u201d\u548c\u201cRSS\u201d\u5217\uff0c\u9019\u4e9b\u6578\u64da\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5224\u65b7mysqld\u662f\u5426\u4f54\u7528\u4e86\u904e\u591a\u7684\u5167\u5b58\u3002<\/p>\n<h2 id=\"3-%e6%aa%a2%e6%9f%a5%e5%85%b6%e4%bb%96%e9%80%b2%e7%a8%8b%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%bf%e7%94%a8-DAGBDvNzvn\">3. \u6aa2\u67e5\u5176\u4ed6\u9032\u7a0b\u7684\u5167\u5b58\u4f7f\u7528<\/h2>\n<p>\u9664\u4e86mysqld\uff0c\u9084\u9700\u8981\u6aa2\u67e5\u5176\u4ed6\u9032\u7a0b\u662f\u5426\u4f54\u7528\u4e86\u5927\u91cf\u5167\u5b58\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u6240\u6709\u9032\u7a0b\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>top<\/code><\/pre>\n<p>\u5728top\u547d\u4ee4\u7684\u754c\u9762\u4e2d\uff0c\u60a8\u53ef\u4ee5\u6309\u201cM\u201d\u9375\u4f86\u6839\u64da\u5167\u5b58\u4f7f\u7528\u91cf\u5c0d\u9032\u7a0b\u9032\u884c\u6392\u5e8f\u3002\u9019\u6a23\u53ef\u4ee5\u5feb\u901f\u627e\u5230\u4f54\u7528\u5167\u5b58\u6700\u591a\u7684\u9032\u7a0b\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/p>\n<h2 id=\"4-%e8%aa%bf%e6%95%b4mysql%e9%85%8d%e7%bd%ae-DAGBDvNzvn\">4. \u8abf\u6574MySQL\u914d\u7f6e<\/h2>\n<p>\u5982\u679c\u767c\u73femysqld\u9032\u7a0b\u4f54\u7528\u4e86\u904e\u591a\u7684\u5167\u5b58\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u8abf\u6574MySQL\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662fmy.cnf\u6216my.ini\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u914d\u7f6e\u9078\u9805\uff1a<\/p>\n<ul>\n<li><strong>innodb_buffer_pool_size<\/strong>: \u9019\u662fInnoDB\u5b58\u5132\u5f15\u64ce\u7528\u65bc\u7de9\u5b58\u6578\u64da\u548c\u7d22\u5f15\u7684\u5167\u5b58\u5927\u5c0f\u3002\u6839\u64da\u53ef\u7528\u5167\u5b58\u8abf\u6574\u6b64\u503c\uff0c\u901a\u5e38\u5efa\u8b70\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768470%-80%\u3002<\/li>\n<li><strong>max_connections<\/strong>: \u6b64\u53c3\u6578\u5b9a\u7fa9\u4e86\u540c\u6642\u9023\u63a5\u5230MySQL\u7684\u6700\u5927\u5ba2\u6236\u7aef\u6578\u91cf\u3002\u6e1b\u5c11\u6b64\u503c\u53ef\u4ee5\u6e1b\u5c11\u5167\u5b58\u4f7f\u7528\uff0c\u4f46\u53ef\u80fd\u6703\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>query_cache_size<\/strong>: \u5982\u679c\u60a8\u4f7f\u7528\u67e5\u8a62\u7de9\u5b58\uff0c\u8acb\u78ba\u4fdd\u6b64\u503c\u4e0d\u6703\u904e\u5927\uff0c\u56e0\u70ba\u5b83\u6703\u4f54\u7528\u984d\u5916\u7684\u5167\u5b58\u3002<\/li>\n<\/ul>\n<p>\u8abf\u6574\u5b8c\u914d\u7f6e\u5f8c\uff0c\u8a18\u5f97\u91cd\u555fMySQL\u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\uff1a<\/p>\n<pre><code>sudo systemctl restart mysql<\/code><\/pre>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e5%84%aa%e5%8c%96-DAGBDvNzvn\">5. \u76e3\u63a7\u548c\u512a\u5316<\/h2>\n<p>\u70ba\u4e86\u9632\u6b62\u672a\u4f86\u518d\u6b21\u51fa\u73fe\u5167\u5b58\u4e0d\u8db3\u7684\u554f\u984c\uff0c\u5efa\u8b70\u5b9a\u671f\u76e3\u63a7\u7cfb\u7d71\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u76e3\u63a7\u5de5\u5177\uff0c\u5982Prometheus\u3001Grafana\u7b49\uff0c\u4f86\u5be6\u6642\u8ddf\u8e64\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u4e26\u8a2d\u7f6e\u8b66\u5831\u4ee5\u4fbf\u53ca\u6642\u8655\u7406\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5b9a\u671f\u512a\u5316\u6578\u64da\u5eab\u4e5f\u662f\u4e00\u500b\u597d\u7fd2\u6163\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u512a\u5316\u8868\uff1a<\/p>\n<pre><code>OPTIMIZE TABLE table_name;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DAGBDvNzvn\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684\u5167\u5b58\u4e0d\u8db3\u554f\u984c\u53ef\u80fd\u6703\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u901a\u904e\u6aa2\u67e5\u7cfb\u7d71\u548cmysqld\u9032\u7a0b\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3001\u8abf\u6574MySQL\u914d\u7f6e\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\u548c\u512a\u5316\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u6578\u64da\u5eab\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u5167\u5b58\u4e0d\u8db3\u932f\u8aa4\uff0c\u6aa2\u67e5mysqld\u6216\u5176\u4ed6\u9032\u7a0b\u662f\u5426\u4f54\u7528\u6240\u6709\u53ef\u7528\u5167\u5b58\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u6b63\u5e38\u904b\u884c\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-176743","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176743","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=176743"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176743\/revisions"}],"predecessor-version":[{"id":176744,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176743\/revisions\/176744"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}