{"id":176455,"date":"2024-11-08T12:00:17","date_gmt":"2024-11-08T04:00:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176455\/"},"modified":"2024-11-08T12:00:18","modified_gmt":"2024-11-08T04:00:18","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-er_sync_thread_max","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176455\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; ER_SYNC_THREAD_MAX"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-er_sync_thread_max-uKcqIKiyPH\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; ER_SYNC_THREAD_MAX<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u662f\u201cER_SYNC_THREAD_MAX\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207MySQL\u7684\u8907\u88fd\u529f\u80fd\u6709\u95dc\uff0c\u7279\u5225\u662f\u5728\u4e3b\u5f9e\u8907\u88fd\u67b6\u69cb\u4e2d\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u4fee\u5fa9\u554f\u984c\u3002<\/p>\n<h2 id=\"er_sync_thread_max%e7%9a%84%e5%ae%9a%e7%be%a9-uKcqIKiyPH\">ER_SYNC_THREAD_MAX\u7684\u5b9a\u7fa9<\/h2>\n<p>ER_SYNC_THREAD_MAX\u932f\u8aa4\u901a\u5e38\u8868\u793a\u5728MySQL\u7684\u8907\u88fd\u904e\u7a0b\u4e2d\uff0c\u5df2\u9054\u5230\u540c\u6b65\u7dda\u7a0b\u7684\u6700\u5927\u6578\u91cf\u9650\u5236\u3002\u9019\u610f\u5473\u8457\u5728\u4e00\u500b\u6642\u9593\u9ede\u4e0a\uff0cMySQL\u4f3a\u670d\u5668\u7121\u6cd5\u518d\u555f\u52d5\u65b0\u7684\u540c\u6b65\u7dda\u7a0b\uff0c\u5f9e\u800c\u5c0e\u81f4\u6578\u64da\u8907\u88fd\u7684\u5ef6\u9072\u6216\u5931\u6557\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e7%9a%84%e5%8e%9f%e5%9b%a0-uKcqIKiyPH\">\u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>\u9020\u6210ER_SYNC_THREAD_MAX\u932f\u8aa4\u7684\u539f\u56e0\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u500b\uff1a<\/p>\n<ul>\n<li><strong>\u7dda\u7a0b\u6578\u91cf\u9650\u5236\uff1a<\/strong>MySQL\u4f3a\u670d\u5668\u5c0d\u65bc\u540c\u6642\u904b\u884c\u7684\u8907\u88fd\u7dda\u7a0b\u6578\u91cf\u6709\u4e00\u5b9a\u7684\u9650\u5236\uff0c\u9019\u500b\u9650\u5236\u53ef\u4ee5\u901a\u904e\u914d\u7f6e\u6587\u4ef6\u9032\u884c\u8abf\u6574\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u4e0d\u8db3\uff1a<\/strong>\u4f3a\u670d\u5668\u7684\u8cc7\u6e90\uff08\u5982CPU\u3001\u5167\u5b58\uff09\u4e0d\u8db3\uff0c\u53ef\u80fd\u5c0e\u81f4\u7121\u6cd5\u555f\u52d5\u65b0\u7684\u7dda\u7a0b\u3002<\/li>\n<li><strong>\u914d\u7f6e\u932f\u8aa4\uff1a<\/strong>MySQL\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u53ef\u80fd\u5b58\u5728\u4e0d\u7576\u8a2d\u7f6e\uff0c\u5c0e\u81f4\u7dda\u7a0b\u7121\u6cd5\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9er_sync_thread_max%e9%8c%af%e8%aa%a4-uKcqIKiyPH\">\u5982\u4f55\u4fee\u5fa9ER_SYNC_THREAD_MAX\u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9ER_SYNC_THREAD_MAX\u932f\u8aa4\u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e7%95%b6%e5%89%8d%e7%b7%9a%e7%a8%8b%e6%95%b8%e9%87%8f-uKcqIKiyPH\">1. \u6aa2\u67e5\u7576\u524d\u7dda\u7a0b\u6578\u91cf<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6aa2\u67e5\u7576\u524d\u6b63\u5728\u904b\u884c\u7684\u8907\u88fd\u7dda\u7a0b\u6578\u91cf\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u67e5\u770b\uff1a<\/p>\n<pre><code>SHOW PROCESSLIST;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u6240\u6709\u6d3b\u52d5\u7684\u7dda\u7a0b\uff0c\u5305\u62ec\u8907\u88fd\u7dda\u7a0b\u3002\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u7d42\u6b62\u4e0d\u5fc5\u8981\u7684\u7dda\u7a0b\u3002<\/p>\n<h3 id=\"2-%e8%aa%bf%e6%95%b4%e9%85%8d%e7%bd%ae%e6%96%87%e4%bb%b6-uKcqIKiyPH\">2. \u8abf\u6574\u914d\u7f6e\u6587\u4ef6<\/h3>\n<p>\u5982\u679c\u60a8\u767c\u73fe\u7dda\u7a0b\u6578\u91cf\u5df2\u9054\u5230\u4e0a\u9650\uff0c\u53ef\u4ee5\u8003\u616e\u8abf\u6574MySQL\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662fmy.cnf\u6216my.ini\uff09\u3002\u67e5\u627e\u4ee5\u4e0b\u53c3\u6578\uff1a<\/p>\n<pre><code>[mysqld]\nslave_parallel_workers = 4<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u6578\u5b57\u53ef\u4ee5\u6839\u64da\u60a8\u7684\u4f3a\u670d\u5668\u6027\u80fd\u9032\u884c\u8abf\u6574\u3002\u589e\u52a0\u6b64\u503c\u53ef\u4ee5\u5141\u8a31\u66f4\u591a\u7684\u8907\u88fd\u7dda\u7a0b\u540c\u6642\u904b\u884c\u3002<\/p>\n<h3 id=\"3-%e7%9b%a3%e6%8e%a7%e4%bc%ba%e6%9c%8d%e5%99%a8%e8%b3%87%e6%ba%90-uKcqIKiyPH\">3. \u76e3\u63a7\u4f3a\u670d\u5668\u8cc7\u6e90<\/h3>\n<p>\u78ba\u4fdd\u4f3a\u670d\u5668\u6709\u8db3\u5920\u7684\u8cc7\u6e90\u4f86\u652f\u6301\u6240\u9700\u7684\u7dda\u7a0b\u6578\u91cf\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u7cfb\u7d71\u76e3\u63a7\u5de5\u5177\uff08\u5982top\u6216htop\uff09\u4f86\u6aa2\u67e5CPU\u548c\u5167\u5b58\u7684\u4f7f\u7528\u60c5\u6cc1\u3002\u5982\u679c\u8cc7\u6e90\u4e0d\u8db3\uff0c\u8003\u616e\u5347\u7d1a\u4f3a\u670d\u5668\u6216\u512a\u5316\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n<h3 id=\"4-%e9%87%8d%e5%95%9fmysql%e6%9c%8d%e5%8b%99-uKcqIKiyPH\">4. \u91cd\u555fMySQL\u670d\u52d9<\/h3>\n<p>\u5728\u9032\u884c\u914d\u7f6e\u66f4\u6539\u5f8c\uff0c\u60a8\u9700\u8981\u91cd\u555fMySQL\u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>sudo systemctl restart mysql<\/code><\/pre>\n<h3 id=\"5-%e6%b8%ac%e8%a9%a6%e8%a4%87%e8%a3%bd%e5%8a%9f%e8%83%bd-uKcqIKiyPH\">5. \u6e2c\u8a66\u8907\u88fd\u529f\u80fd<\/h3>\n<p>\u91cd\u555f\u5f8c\uff0c\u6aa2\u67e5\u8907\u88fd\u529f\u80fd\u662f\u5426\u6b63\u5e38\u904b\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u8907\u88fd\u72c0\u614b\uff1a<\/p>\n<pre><code>SHOW SLAVE STATUSG;<\/code><\/pre>\n<p>\u78ba\u4fdd\u6240\u6709\u7684\u72c0\u614b\u4fe1\u606f\u90fd\u662f\u6b63\u5e38\u7684\uff0c\u7279\u5225\u662f\u201cSlave_IO_Running\u201d\u548c\u201cSlave_SQL_Running\u201d\u61c9\u8a72\u986f\u793a\u70ba\u201cYes\u201d\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uKcqIKiyPH\">\u7e3d\u7d50<\/h2>\n<p>ER_SYNC_THREAD_MAX\u932f\u8aa4\u5728MySQL\u7684\u8907\u88fd\u904e\u7a0b\u4e2d\u4e26\u4e0d\u7f55\u898b\uff0c\u4f46\u901a\u904e\u9069\u7576\u7684\u6aa2\u67e5\u548c\u914d\u7f6e\u8abf\u6574\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u78ba\u4fdd\u60a8\u7684\u4f3a\u670d\u5668\u8cc7\u6e90\u5145\u8db3\uff0c\u4e26\u6839\u64da\u9700\u8981\u8abf\u6574\u8907\u88fd\u7dda\u7a0b\u7684\u6578\u91cf\uff0c\u4ee5\u4fdd\u6301\u6578\u64da\u7684\u540c\u6b65\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u4ee5\u7372\u5f97\u66f4\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4ER_SYNC_THREAD_MAX\uff0c\u89e3\u6c7a\u540c\u6b65\u57f7\u884c\u7dd2\u6578\u91cf\u8d85\u904e\u9650\u5236\u7684\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u7a69\u5b9a\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-176455","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176455","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=176455"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176455\/revisions"}],"predecessor-version":[{"id":176456,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176455\/revisions\/176456"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}