{"id":2872,"date":"2017-11-20T21:32:31","date_gmt":"2017-11-20T13:32:31","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=2872"},"modified":"2017-11-20T21:32:31","modified_gmt":"2017-11-20T13:32:31","slug":"mysql%e7%9a%84%e6%80%a7%e8%83%bd%e7%9b%91%e6%8e%a7%e6%8c%87%e6%a0%87","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/fuwuqi\/mysql%e7%9a%84%e6%80%a7%e8%83%bd%e7%9b%91%e6%8e%a7%e6%8c%87%e6%a0%87\/","title":{"rendered":"mysql\u7684\u6027\u80fd\u76d1\u63a7\u6307\u6807"},"content":{"rendered":"<div id=\"cnblogs_post_body\">\n<p>\u8fd9\u91cc\u5217\u51fa\u4e86\u4e00\u4e9b\u5982\u4f55\u76d1\u89c6\u4f60\u5b89\u88c5\u7684mysql\u6027\u80fd\u7684\u4e00\u4e9bideas\u3002\u76d1\u89c6\u603b\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\u3002\u4f60\u9700\u8981\u77e5\u9053\u54ea\u79cd\u6a21\u5f0f\u5bf9\u4f60\u7684\u6570\u636e\u5e93\u662f\u597d\u7684\uff0c\u4ec0\u4e48\u662f\u95ee\u9898\u7684\u8868\u8c61\uff0c\u751a\u81f3\u662f\u5371\u9669\u7684\u60c5\u51b5\u3002<br \/>\n\u4e00\u4e0b\u5217\u51fa\u4e86\u7528\u6765\u53bb\u76d1\u89c6\u4f60\u7684\u7cfb\u7edf\u7684\u4e3b\u8981\u53c2\u6570\uff1a<br \/>\n&#8211; mysqladmin extended (\u7edd\u5bf9\u503c)<br \/>\n&#8211; mysqladmin extended -i10 -r (\u76f8\u5bf9\u503c)<br \/>\n&#8211; mysqladmin processlist<br \/>\n&#8211; mysql -e &#8220;show innodb status&#8221;<br \/>\n&#8211; OS data. vmstat\/iostat<br \/>\n&#8211; MySQL error log<br \/>\n&#8211; InnoDB tablespace info.<br \/>\n1) mysqladmin extended (\u7edd\u5bf9\u503c)<br \/>\n\u91cd\u70b9\u53bb\u76d1\u89c6\u7684\u503c\u6709\uff1a<br \/>\n* Slave_running:\u5982\u679c\u7cfb\u7edf\u6709\u4e00\u4e2a\u4ece\u590d\u5236\u670d\u52a1\u5668\uff0c\u8fd9\u4e2a\u503c\u6307\u660e\u4e86\u4ece\u670d\u52a1\u5668\u7684\u5065\u5eb7\u5ea6<br \/>\n* Threads_connected:\u5f53\u524d\u5ba2\u6237\u7aef\u5df2\u8fde\u63a5\u7684\u6570\u91cf\u3002\u8fd9\u4e2a\u503c\u4f1a\u5c11\u4e8e\u9884\u8bbe\u7684\u503c\uff0c\u4f46\u4f60\u4e5f\u80fd\u76d1\u89c6\u5230\u8fd9\u4e2a\u503c\u8f83\u5927\uff0c\u8fd9\u53ef\u4fdd\u8bc1\u5ba2\u6237\u7aef\u662f\u5904\u5728\u6d3b\u8dc3\u72b6\u6001\u3002<br \/>\n* Threads_running:\u5982\u679c\u6570\u636e\u5e93\u8d85\u8d1f\u8377\u4e86\uff0c\u4f60\u5c06\u4f1a\u5f97\u5230\u4e00\u4e2a\u6b63\u5728\uff08\u67e5\u8be2\u7684\u8bed\u53e5\u6301\u7eed\uff09\u589e\u957f\u7684\u6570\u503c\u3002\u8fd9\u4e2a\u503c\u4e5f\u53ef\u4ee5\u5c11\u4e8e\u9884\u5148\u8bbe\u5b9a\u7684\u503c\u3002\u8fd9\u4e2a\u503c\u5728\u5f88\u77ed\u7684\u65f6\u95f4\u5185\u8d85\u8fc7\u9650\u5b9a\u503c\u662f\u6ca1\u95ee\u9898\u7684\u3002\u5f53Threads_running\u503c\u8d85\u8fc7\u9884\u8bbe\u503c\u65f6\u5e76\u4e14\u8be5\u503c\u57285\u79d2\u5185\u6ca1\u6709\u56de\u843d\u65f6\uff0c \u8981\u540c\u65f6\u76d1\u89c6\u5176\u4ed6\u7684\u4e00\u4e9b\u503c\u3002<br \/>\n2\uff09mysqladmin extended(\u8ba1\u6570\u5668)<br \/>\n* Aborted_clients:\u5ba2\u6237\u7aef\u88ab\u5f02\u5e38\u4e2d\u65ad\u7684\u6570\u503c\uff08\u56e0\u4e3a\u8fde\u63a5\u5230mysql\u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\u6ca1\u6709\u6b63\u5e38\u5730\u65ad\u5f00\u6216\u5173\u95ed\uff09\u3002\u5bf9\u4e8e\u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u662f\u6ca1\u6709\u5f71\u54cd\u7684\uff0c\u4f46\u5bf9\u4e8e\u53e6\u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u4f60\u8981\u8ddf\u8e2a\u8be5\u503c\uff0c\u56e0\u4e3a\u5f02\u5e38\u4e2d\u65ad\u8fde\u63a5\u53ef\u80fd\u8868\u660e\u4e86\u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u6709\u95ee\u9898\u3002<br \/>\n* Questions:\u6bcf\u79d2\u949f\u83b7\u5f97\u7684\u67e5\u8be2\u6570\u91cf\u3002\u4e5f\u53ef\u4ee5\u662f\u5168\u90e8\u67e5\u8be2\u7684\u6570\u91cf\uff08\u6ce8\uff1a\u53ef\u4ee5\u6839\u636e\u4f60\u8f93\u5165\u4e0d\u540c\u7684\u547d\u4ee4\u4f1a\u5f97\u5230\u4f60\u60f3\u8981\u7684\u4e0d\u540c\u7684\u503c\uff09\u3002<br \/>\n* Handler_*:\u5982\u679c\u4f60\u60f3\u76d1\u89c6\u5e95\u5c42\uff08low-level\uff09\u6570\u636e\u5e93\u8d1f\u8f7d\uff0c\u8fd9\u4e9b\u503c\u662f\u503c\u5f97\u53bb\u8ddf\u8e2a\u7684\u3002\u5982\u679cHandler_read_rnd_next\u503c\u76f8\u5bf9 \u4e8e\u4f60\u8ba4\u4e3a\u662f\u6b63\u5e38\u503c\u76f8\u5dee\u60ac\u6b8a\uff0c\u53ef\u80fd\u4f1a\u544a\u8bc9\u4f60\u9700\u8981\u4f18\u5316\u6216\u7d22\u5f15\u51fa\u95ee\u9898\u4e86\u3002Handler_rollback\u8868\u660e\u4e8b\u52a1\u88ab\u56de\u6eda\u7684\u67e5\u8be2\u6570\u91cf\u3002\u4f60\u53ef\u80fd\u60f3\u8c03\u67e5\u4e00\u4e0b\u539f\u56e0\u3002<br \/>\n* Opened_tables:\u8868\u7f13\u5b58\u6ca1\u6709\u547d\u4e2d\u7684\u6570\u91cf\u3002\u5982\u679c\u8be5\u503c\u5f88\u5927\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u589e\u52a0table_cache\u7684\u6570\u503c\u3002\u5178\u578b\u5730\uff0c\u4f60\u53ef\u80fd\u60f3\u8981\u8fd9\u4e2a\u503c\u6bcf\u79d2\u6253\u5f00\u7684\u8868\u6570\u91cf\u5c11\u4e8e1\u62162.<br \/>\n* Select_full_join: \u6ca1\u6709\u4e3b\u952e\uff08key\uff09\u8054\u5408\uff08Join\uff09\u7684\u6267\u884c\u3002\u8be5\u503c\u53ef\u80fd\u662f\u96f6\u3002\u8fd9\u662f\u6355\u83b7\u5f00\u53d1\u9519\u8bef\u7684\u597d\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4e00\u4e9b\u8fd9\u6837\u7684\u67e5\u8be2\u53ef\u80fd\u964d\u4f4e\u7cfb\u7edf\u7684\u6027\u80fd\u3002<br \/>\n* Select_scan:\u6267\u884c\u5168\u8868\u641c\u7d22\u67e5\u8be2\u7684\u6570\u91cf\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u662f\u6ca1\u95ee\u9898\u7684\uff0c\u4f46\u5360\u603b\u67e5\u8be2\u6570\u91cf\u8be5\u6bd4\u503c\u5e94\u8be5\u662f\u5e38\u91cf\uff08\u6ce8\uff1aSelect_scan\u9664\u4ee5\u603b\u67e5\u8be2\u6570\u91cf\u5546\u5e94\u8be5\u662f\u5e38\u6570\uff09\u3002\u5982\u679c\u4f60\u53d1\u73b0\u8be5\u503c\u6301\u7eed\u589e\u957f\uff0c\u8bf4\u660e\u9700\u8981\u4f18\u5316\uff0c\u7f3a\u4e4f\u5fc5\u8981\u7684\u7d22\u5f15\u6216\u5176\u4ed6\u95ee\u9898\u3002<br \/>\n* Slow_queries:\u8d85\u8fc7\u8be5\u503c\uff08&#8211;long-query-time\uff09\u7684\u67e5\u8be2\u6570\u91cf\uff0c\u6216\u6ca1\u6709\u4f7f\u7528\u7d22\u5f15\u67e5\u8be2\u6570\u91cf\u3002\u5bf9\u4e8e\u5168\u90e8\u67e5\u8be2\u4f1a\u6709\u5c0f\u7684\u51b2\u7a81\u3002\u5982\u679c\u8be5\u503c\u589e\u957f\uff0c\u8868\u660e\u7cfb\u7edf\u6709\u6027\u80fd\u95ee\u9898\u3002<br \/>\n* Threads_created:\u8be5\u503c\u5e94\u8be5\u662f\u4f4e\u7684\u3002\u8f83\u9ad8\u7684\u503c\u53ef\u80fd\u610f\u5473\u7740\u4f60\u9700\u8981\u589e\u52a0thread_cache\u7684\u6570\u503c\uff0c\u6216\u4f60\u9047\u5230\u4e86\u6301\u7eed\u589e\u52a0\u7684\u8fde\u63a5\uff0c\u8868\u660e\u4e86\u6f5c\u5728\u7684\u95ee\u9898\u3002<br \/>\n3\uff09mysqladmin processlist or &#8220;SHOW FULL PROCESSLIST&#8221;\u547d\u4ee4<br \/>\n\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5176\u4ed6\u7684\u7edf\u8ba1\u4fe1\u606f\u5f97\u5230\u5df2\u8fde\u63a5\u7ebf\u7a0b\u6570\u91cf\u548c\u6b63\u5728\u8fd0\u884c\u7ebf\u7a0b\u7684\u6570\u91cf\uff0c\u68c0\u67e5\u6b63\u5728\u8fd0\u884c \u7684\u67e5\u8be2\u82b1\u4e86\u591a\u957f\u65f6\u95f4\u662f\u4e00\u4e2a\u597d\u4e3b\u610f\u3002\u5982\u679c\u6709\u4e00\u4e9b\u957f\u65f6\u95f4\u7684\u67e5\u8be2\uff08\u7531\u4e8e\u5f88\u5dee\u7684\u6784\u601d\u6216\u516c\u5f0f\uff09\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u88ab\u901a\u77e5\u3002\u4f60\u53ef\u80fd\u4e5f\u60f3\u4e86\u89e3\u591a\u5c11\u4e2a\u67e5\u8be2\u662f\u5728&#8221;Locked&#8221;\u7684 \u72b6\u6001\u2014&#8212;\u8be5\u503c\u4f5c\u4e3a\u6b63\u5728\u8fd0\u884c\u7684\u67e5\u8be2\u4e0d\u88ab\u8ba1\u7b97\u5728\u5185\u800c\u662f\u4f5c\u4e3a\u975e\u6d3b\u8dc3\u7684\u3002\u4e00\u4e2a\u7528\u6237\u6b63\u5728\u7b49\u5f85\u4e00\u4e2a\u6570\u636e\u5e93\u54cd\u5e94\u3002<br \/>\n4) &#8220;SHOW INNODB STATUS&#8221;\u547d\u4ee4<br \/>\n\u8be5\u8bed\u53e5\u4ea7\u751f\u5f88\u591a\u4fe1\u606f\uff0c\u4ece\u4e2d\u4f60\u53ef\u4ee5\u5f97\u5230\u4f60\u611f\u5174\u8da3\u7684\u3002\u9996\u5148\u4f60\u8981\u68c0\u67e5\u7684\u5c31\u662f\u201c\u4ece\u6700\u8fd1\u7684XX\u79d2\u8ba1\u7b97\u51fa\u6765\u7684\u6bcf\u79d2\u7684\u5e73\u5747\u8d1f\u8f7d\u201d\u3002<br \/>\n* Pending normal aio reads: \u8be5\u503c\u662finnodb io\u8bf7\u6c42\u67e5\u8be2\u7684\u5927\u5c0f\uff08size\uff09\u3002\u5982\u679c\u8be5\u503c\u5927\u5230\u8d85\u8fc7\u4e8610\u201420\uff0c\u4f60\u53ef\u80fd\u6709\u4e00\u4e9b\u74f6\u9888\u3002<br \/>\n* reads\/s, avg bytes\/read, writes\/s, fsyncs\/s:\u8fd9\u4e9b\u503c\u662fio\u7edf\u8ba1\u3002\u5bf9\u4e8ereads\/writes\u5927\u503c\u610f\u5473\u7740io\u5b50\u7cfb\u7edf\u6b63\u5728\u88ab\u88c5\u8f7d\u3002\u9002\u5f53\u7684\u503c\u53d6\u51b3\u4e8e\u4f60\u7cfb\u7edf\u7684\u914d\u7f6e\u3002<br \/>\n* Buffer pool hit rate:\u8fd9\u4e2a\u547d\u4e2d\u7387\u975e\u5e38\u4f9d\u8d56\u4e8e\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u5f53\u4f60\u89c9\u5f97\u6709\u95ee\u9898\u65f6\u8bf7\u68c0\u67e5\u4f60\u7684\u547d\u4e2d\u7387<br \/>\n* inserts\/s, updates\/s, deletes\/s, reads\/s:\u6709\u4e00\u4e9bInnodb\u7684\u5e95\u5c42\u64cd\u4f5c\u3002\u4f60\u53ef\u4ee5\u7528\u8fd9\u4e9b\u503c\u68c0\u67e5\u4f60\u7684\u8d1f\u8f7d\u60c5\u51b5\u67e5\u770b\u662f\u5426\u662f\u671f\u5f85\u7684\u6570\u503c\u8303\u56f4\u3002<br \/>\n4\uff09OS\u6570\u636e\u3002\u67e5\u770b\u7cfb\u7edf\u72b6\u6001\u597d\u7684\u5de5\u5177\u662fvmstat\/iostat\/mpstat\uff0c\u8fd9\u4e9b\u53ef\u4ee5\u770bman\u624b\u518c<br \/>\n5\uff09MySQL\u9519\u8bef\u65e5\u5fd7&#8212;&#8211;\u5728\u670d\u52a1\u5668\u6b63\u5e38\u5b8c\u6210\u521d\u59cb\u5316\u540e\uff0c\u4ec0\u4e48\u90fd\u4e0d\u4f1a\u5199\u5230\u9519\u8bef\u65e5\u5fd7\u4e2d\uff0c\u56e0\u6b64\u4efb\u4f55\u5728\u8be5\u65e5\u5fd7\u4e2d\u7684\u4fe1\u606f\u90fd\u8981\u5f15\u8d77\u7ba1\u7406\u5458\u7684\u6ce8\u610f\u3002<br \/>\n6\uff09InnoDB\u8868\u7a7a\u95f4\u4fe1\u606f\u3002InnoDB\u4ec5\u6709\u7684\u5371\u9669\u60c5\u51b5\u5c31\u662f\u8868\u7a7a\u95f4\u586b\u6ee1&#8212;-\u65e5\u5fd7\u4e0d\u4f1a\u586b\u6ee1\u3002\u68c0\u67e5\u7684\u6700\u597d\u65b9\u5f0f\u5c31\u662f\uff1ashow table status;\u4f60\u53ef\u4ee5\u7528\u4efb\u4f55InnoDB\u8868\u6765\u76d1\u89c6InnoDB\u8868\u7684\u5269\u4f59\u7a7a\u95f4\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u91cc\u5217\u51fa\u4e86\u4e00\u4e9b\u5982\u4f55\u76d1\u89c6\u4f60\u5b89\u88c5\u7684mysql\u6027\u80fd\u7684\u4e00\u4e9bideas\u3002\u76d1\u89c6\u603b\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\u3002\u4f60\u9700\u8981\u77e5\u9053\u54ea\u79cd\u6a21\u5f0f\u5bf9\u4f60\u7684 &#8230; <a title=\"mysql\u7684\u6027\u80fd\u76d1\u63a7\u6307\u6807\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/fuwuqi\/mysql%e7%9a%84%e6%80%a7%e8%83%bd%e7%9b%91%e6%8e%a7%e6%8c%87%e6%a0%87\/\" aria-label=\"\u9605\u8bfb mysql\u7684\u6027\u80fd\u76d1\u63a7\u6307\u6807\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10,9],"tags":[],"class_list":["post-2872","post","type-post","status-publish","format-standard","hentry","category-shujuku","category-fuwuqi"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=2872"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2872\/revisions"}],"predecessor-version":[{"id":2873,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2872\/revisions\/2873"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=2872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=2872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=2872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}