{"id":200221,"date":"2025-05-06T08:31:04","date_gmt":"2025-05-06T00:31:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200221\/"},"modified":"2025-05-06T08:31:04","modified_gmt":"2025-05-06T00:31:04","slug":"mysql-%e5%af%bc%e8%87%b4-load-average-%e8%bf%87%e9%ab%98%ef%bc%8c%e5%a6%82%e4%bd%95%e6%8e%92%e6%9f%a5%e5%92%8c%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200221\/","title":{"rendered":"MySQL \u5bfc\u81f4 Load Average \u8fc7\u9ad8\uff0c\u5982\u4f55\u6392\u67e5\u548c\u89e3\u51b3\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5bfc\u81f4 Load Average \u8fc7\u9ad8\uff0c\u5982\u4f55\u6392\u67e5\u548c\u89e3\u51b3\uff1f<\/h1>\n<p>\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\uff0c\u6216\u8005\u662f\u5bf9\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241029\/1730163268672032449b8c5.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u5bfc\u81f4 load average \u8fc7\u9ad8<\/strong><\/p>\n<p><strong>\u95ee\u9898\u63cf\u8ff0<\/strong><\/p>\n<p>\u901a\u8fc7\u7ec8\u7aef\u767b\u5f55\u9700\u8981\u7b49\u5f85\u6570\u79d2\uff0c\u6267\u884c\u5176\u4ed6\u547d\u4ee4\u65f6\u65f6\u800c\u5feb\u65f6\u800c\u6162\u3002uptime \u547d\u4ee4\u8f93\u51fa load average \u6301\u7eed\u9ad8\u4e8e 4.0\uff0c\u63a8\u6d4b\u4e3a\u7cfb\u7edf\u8d1f\u8f7d\u8fc7\u9ad8\u5bfc\u81f4\u3002<\/p>\n<p><strong>\u6392\u67e5\u8fc7\u7a0b<\/strong><\/p>\n<ul>\n<li>\u901a\u8fc7 top \u547d\u4ee4\u53d1\u73b0 mysqld \u8fdb\u7a0b\u5360\u7528\u8f83\u591a CPU \u8d44\u6e90\u3002<\/li>\n<li>\u505c\u6b62 mysql \u670d\u52a1\u540e\uff0cload average \u660e\u663e\u4e0b\u964d\uff0c\u8868\u660e mysql \u662f\u9020\u6210\u9ad8\u8d1f\u8f7d\u7684\u539f\u56e0\u3002<\/li>\n<li>\u91cd\u65b0\u542f\u52a8 mysql \u5931\u8d25\uff0c\u901a\u8fc7\u6e05\u7406\u914d\u7f6e\u6587\u4ef6\u540e\u91cd\u65b0\u5b89\u88c5 mysql \u89e3\u51b3\u3002<\/li>\n<\/ul>\n<p><strong>\u540e\u7eed\u5206\u6790<\/strong><\/p>\n<p>\u518d\u6b21\u542f\u52a8 mysql\u3001redis\u3001mongodb \u540e\uff0cload average \u4e0b\u964d\u81f3\u6b63\u5e38\u6c34\u5e73\uff082.25, 2.13, 1.57\uff09\u3002<\/p>\n<p><strong>IO \u6027\u80fd\u6d4b\u8bd5<\/strong><\/p>\n<p>\u4f7f\u7528 iozone \u5de5\u5177\u6d4b\u8bd5\u4e86 Raspberry Pi 4 (\u901a\u8fc7 USB 3.0 \u63a5\u5165 U \u76d8)\u3001MacOS (\u901a\u8fc7 USB 3.0 \u63a5\u5165 U \u76d8)\u3001Raspberry Pi 4 (\u901a\u8fc7 USB 3.0 \u63a5\u5165 HDD) \u7684 IO \u6027\u80fd\uff1a<\/p>\n<ul>\n<li>U \u76d8\uff1a\u8bfb\u901f\u7ea6 70M\/s\uff0c\u5199\u901f\u7ea6 5M\/s<\/li>\n<li>HDD\uff1a\u8bfb\u901f\u7ea6 100M\/s\uff0c\u5199\u901f\u7ea6 70M\/s<\/li>\n<\/ul>\n<p>\u7531\u4e8e U \u76d8\u7684\u5199\u6027\u80fd\u8f83\u5dee\uff0c\u53ef\u80fd\u662f\u5bfc\u81f4 mysql \u8d1f\u8f7d\u8fc7\u9ad8\u7684\u539f\u56e0\u3002<\/p>\n<p><strong>\u7cfb\u7edf\u5de5\u5177<\/strong><\/p>\n<p>\u6392\u67e5\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u5de5\u5177\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>iozone: \u6d4b\u8bd5 IO \u6027\u80fd<\/li>\n<li>iotop: \u76d1\u63a7 IO \u6d3b\u52a8<\/li>\n<li>top: \u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5<\/li>\n<li>lsof: \u5217\u51fa\u6253\u5f00\u7684\u6587\u4ef6<\/li>\n<\/ul>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aMySQL \u5bfc\u81f4 Load Average \u8fc7\u9ad8\uff0c\u5982\u4f55\u6392\u67e5\u548c\u89e3\u51b3\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5bfc\u81f4 Load Av&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200221","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200221","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200221"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200221\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}