{"id":1043,"date":"2017-11-05T10:06:57","date_gmt":"2017-11-05T02:06:57","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=1043"},"modified":"2017-11-05T12:34:33","modified_gmt":"2017-11-05T04:34:33","slug":"innodb%e8%af%bb%e5%86%99%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=1043","title":{"rendered":"innodb\u8bfb\u5199\u4f18\u5316"},"content":{"rendered":"<h1>\u8bfb\u4f18\u5316\u76f8\u5173\u53c2\u6570\uff1a<\/h1>\n<h3>innodb_buffer_poll_size\uff1b<\/h3>\n<h3>innodb_thread_concurrency\uff1a<\/h3>\n<p>innodb\u4f1a\u4fdd\u5b58\u4e00\u5b9a\u6570\u91cf\u7684\u64cd\u4f5c\u7cfb\u7edf\u7ebf\u7a0b\uff0c\u8be5\u503c\u5c0f\u4e8e\u7b49\u4e8e\u8fd9\u4e2a\u53d8\u91cf\u7684\u503c\u3002\u4e00\u65e6\u7ebf\u7a0b\u6570\u5230\u8fbe\u4e86\u9650\u5236\uff0c\u989d\u5916\u7684\u7ebf\u7a0b\u4f1a\u4ee5\u201c\u5148\u8fdb\u5148\u51fa\u201d\u7684\u65b9\u5f0f\uff0c\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u3002\u7b49\u5f85\u7ebf\u7a0b\u6570\u4e0d\u4f1a\u7edf\u8ba1\u5230\u5e76\u53d1\u6267\u884c\u7ebf\u7a0b\u6570\u4e2d\u3002\u8fd9\u4e2a\u503c\u7684\u8303\u56f4\u662f0\u52301000\u30020\u662f\u9ed8\u8ba4\u503c\uff0c\u4ee3\u8868\u4e0d\u9650\u5236\u7ebf\u7a0b\u6570\u3002\u5173\u95ed\u7ebf\u7a0b\u5e76\u53d1\u68c0\u67e5\uff0c\u540c\u65f6\u4e5f\u4f1a\u5173\u95ed&lt;&gt;SHOW ENGINE INNODB STATUS\u8f93\u51faROW OPERATIONS\u90e8\u5206\u7684<code>queries inside InnoDB<\/code>\u548c<code>queries in queue counters<\/code>\u503c\u3002<\/p>\n<p>&nbsp;<\/p>\n<h1>\u5199\u4f18\u5316\u76f8\u5173\u53c2\u6570\uff1a<\/h1>\n<p>innodb_flush_log_at_trx_commit\uff08redo log\u4e8b\u52a1\u65e5\u5fd7\uff09\uff1bsync_binlog\uff08bin log\uff09\uff1b<\/p>\n<h3><code class=\"literal\">innodb_log_write_ahead_size<\/code>:<\/h3>\n<p>write-ahead\u5757\u5927\u5c0f\u7528\u4e8eredo log\uff0c\u5355\u4f4d\u662f\u5b57\u8282\u3002\u4e3a\u4e86\u907f\u514d\u201cread-on-write\u201d\uff0c\u8bbe\u7f6e<code class=\"literal\">innodb_log_write_ahead_size<\/code>\u503c\u548c\u64cd\u4f5c\u7cfb\u7edf\u6216\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u5757\u5927\u5c0f\u4e00\u81f4\u3002Read-on-write\u53d1\u751f\u5728\u7531\u4e8ewrite-ahead\u5757\u5927\u5c0f\u548c\u7cfb\u7edf\u5757\u6216\u6587\u4ef6\u7cfb\u7edf\u5757\u5927\u5c0f\u4e0d\u4e00\u81f4\uff0credo log\u5757\u4e0d\u80fd\u5168\u90e8\u7f13\u5b58\u5230\u7cfb\u7edf\u6216\u6587\u4ef6\u7cfb\u7edf\u4e2d\u3002<\/p>\n<p>\u6709\u6548\u503c\u662fInnoDB\u65e5\u5fd7\u5757\u5927\u5c0f\u7684\u6574\u6570\u500d\uff082^n\uff09\u3002\u6700\u5c0f\u503c\u662f512\u3002\u5f53\u8bbe\u7f6e\u4e86\u6700\u5c0f\u503c\u65f6\uff0cwrite-ahead\u4e0d\u4f1a\u53d1\u751f\u3002\u6700\u5927\u503c\u7b49\u4e8einnodb_page_size\u3002\u5982\u679c\u8bbe\u7f6e\u7684\u503c\u5927\u4e8einnodb_page_size\u8be5\u503c\u4f1a\u88ab\u622a\u65ad\u5230innodb_page_size\u5927\u5c0f\u3002<\/p>\n<p>\u8bbe\u7f6e\u8be5\u503c\u592a\u5c0f\u4f1a\u5f15\u53d1\u201cread-on-write\u201d\u3002\u8bbe\u7f6e\u592a\u5927\u4f1a\u56e0\u4e3a\u51e0\u4e2a\u5757\u4e00\u6b21\u5199\u5165\uff0c\u5bf9fsync\u6709\u7565\u5fae\u5f71\u54cd\u3002<\/p>\n<h3>innodb_io_capacity<\/h3>\n<ul>\n<li>Innodb\u6bcf\u6b21\u5237\u591a\u5c11\u4e2a\u810f\u9875\uff0c\u51b3\u5b9aInnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u541e\u5410\u80fd\u529b<\/li>\n<li>\u5728SSD\u7b49\u9ad8\u6027\u80fd\u5b58\u50a8\u4ecb\u8d28\u4e0b\uff0c\u5e94\u8be5\u63d0\u9ad8\u8be5\u53c2\u6570\u4ee5\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h3><code class=\"literal\">innodb_change_buffering\u548cinnodb_change_buffer_max_size<\/code><\/h3>\n<p>innoDB\u662f\u5426\u6267\u884cchange buffering\uff0c\u8fd9\u4e2a\u4f18\u5316\u53ef\u4ee5\u5ef6\u8fdf\u5199\u64cd\u4f5c\u3002SQL\u8bed\u53e5\u901a\u5e38 \u662f\u8c03\u7528\u968f\u673aIO\u64cd\u4f5c\uff0c\u8fd9\u4e2a\u53c2\u6570\u53ef\u4ee5\u963b\u6b62\u968f\u673aIO\u5e76\u5728\u540e\u53f0\u4ee5\u4e00\u4e2a\u7ebf\u7a0b\u5468\u671f\u7684\u6267\u884c\u3002\u88ab\u963b\u6b62\u7684\u64cd\u4f5c\u53ef\u4ee5\u7ec4\u6210\u64cd\u4f5c\u5e8f\u5217\uff0c\u64cd\u4f5c\u5e8f\u5217\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u66f4\u9ad8\u6548\u7684\u6267\u884c\uff0c\u800c\u4e0d\u662f\u6bcf\u4e2a\u503c\u7acb\u5373\u5199\u5230\u78c1\u76d8\u4e2d\u3002<\/p>\n<p>change buffer:\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5c06\u6539\u53d8\u7684\u8bb0\u5f55\u5b58\u5165secondary indexes\u9875\u4e2d\u3002\u8fd9\u4e2a\u503c\u53ef\u4ee5\u7531INSERT, UPDATE, \u6216DELETE\u8bed\u53e5\u4ea7\u751f\u3002<\/p>\n<p>\u5f53\u76f8\u6765\u81easecondary index\u7684\u76f8\u5173\u9875\u4e0d\u5728buffer pool\u4e2d\u65f6\uff0c\u6539\u53d8\u7684\u6570\u636e\u53ea\u5b58\u5165change buffer\u4e2d\u3002\u5f53\u76f8\u5173\u7684\u7d22\u5f15\u9875\u88ab\u653e\u5165buffer pool\u4e2d\u65f6\uff0c\u5bf9\u4e8e\u8fd9\u4e9b\u6570\u636e\u7684\u6539\u53d8\u5728buffer pool\u4e2d\u53d1\u751f\u3002\u5f53\u7cfb\u7edf\u7a7a\u95f2\u6216\u7531\u4e8e\u8fc7\u4e8e\u7f13\u6162\u5173\u95ed\u65f6\uff0c\u5468\u671f\u7684\u8fd0\u884cpurge\u64cd\u4f5c\uff0c\u5199\u65b0\u7d22\u5f15\u9875\u5230\u78c1\u76d8\u3002purge\u64cd\u4f5c\u80fd\u5229\u7528\u7d22\u5f15\u503c\u9ad8\u6548\u7684\u5199\u78c1\u76d8\u5757\u3002<\/p>\n<p>change buffer\u662f\u7cfb\u7edf\u8868\u7a7a\u95f4\u7684\u4e00\u90e8\u5206\uff0c\u6240\u4ee5\u5373\u4f7f\u6570\u636e\u5e93\u91cd\u542findex change\u4e5f\u80fd\u4fdd\u7559\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bfb\u4f18\u5316\u76f8\u5173\u53c2\u6570\uff1a innodb_buffer_poll_size\uff1b innodb_thread_concurrency\uff1a innodb\u4f1a\u4fdd\u5b58\u4e00\u5b9a\u6570\u91cf\u7684\u64cd\u4f5c\u7cfb\u7edf\u7ebf&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=1043\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[],"class_list":["post-1043","post","type-post","status-publish","format-standard","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1043"}],"version-history":[{"count":6,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1043\/revisions"}],"predecessor-version":[{"id":1049,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1043\/revisions\/1049"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}