{"id":45292,"date":"2025-06-23T18:16:06","date_gmt":"2025-06-23T10:16:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/45292.html"},"modified":"2025-06-23T18:16:06","modified_gmt":"2025-06-23T10:16:06","slug":"mysql-8-028-%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%9a%84%e5%86%85%e5%ad%98%e4%bd%bf%e7%94%a8%e7%8e%87%e9%ab%98%e4%ba%8e90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/45292.html","title":{"rendered":"mysql 8.028 \u670d\u52a1\u5668\u7684\u5185\u5b58\u4f7f\u7528\u7387\u9ad8\u4e8e90%"},"content":{"rendered":"<h2>1.\u00a0\u4f7f\u7528 top, htop, free -m, vmstat, ps \u7b49\u547d\u4ee4\u67e5\u770b\u6574\u4f53\u7cfb\u7edf\u5185\u5b58\u4f7f\u7528\u3002<\/h2>\n<h3>&#xff11;.&#xff11;top\u67e5mysql<\/h3>\n<p>$ top -p $(pgrep mysqld)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"300\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250623101605-6859296568313.png\" width=\"1238\" \/><\/p>\n<ul>\n<li>\u670d\u52a1\u5668\u603b\u5185\u5b58&#xff1a;32GB<\/li>\n<li><span style=\"color:#fe2c24\">MySQL \u5f53\u524d\u5185\u5b58\u5360\u7528&#xff1a;5.4%&#xff08;32*0.054<img decoding=\"async\" alt=\"\\\\approx\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250623101605-68592965bab3d.png\" \/>1.7GB&#xff09;<\/span><\/li>\n<\/ul>\n<p>\u6240\u4ee5&#xff0c;\u5360\u5185\u5b58\u7684\u8fdb\u7a0b\u4e0d\u662fmysql<\/p>\n<h3>&#xff11;.&#xff12;top\u67e5\u770b\u7cfb\u7edf<\/h3>\n<p>top &#8212;&gt; \u6309b, x\u00a0&#8212;&gt; \u6309 &gt; ,\u00a0 \u9ad8\u4eae%MEM<\/p>\n<p>\u53d1\u73b0&#xff0c;\u6709\u5f88\u591azbxTrapperSumItem.py<\/p>\n<p>\u7ecf\u67e5&#xff0c;\u8fd9\u4e2a\u811a\u672c\u662f\u7cfb\u7edf\u7684\u8ba1\u5212\u4efb\u52a1&#xff0c;1\u5206\u949f\u6267\u884c\u4e00\u6b21&#xff0c;\u6bcf\u6b21\u8017\u65f6\u4e0d\u52305\u79d2\u3002\u51fa\u73b0\u51e0\u767e\u4e2a\u50f5\u5c38\/\u6302\u8d77\u8fdb\u7a0b\u662f\u56e0\u4e3a\u811a\u672c\u4e2d\u6709\u4e00\u4e2a\u6570\u636e\u5e93\u67e5\u8be2&#xff08;\u6570\u636e\u5e93\u5730\u5740\u66f4\u6362\u4e86&#xff09;&#xff0c;\u540e\u9762\u8981\u4f18\u5316\u811a\u672c\u4e86\u3002<\/p>\n<p>#\u3000\u7cfb\u7edf\u5c42\u9762\u5b58\u5728\u5f88\u591a\u8fd9\u6837\u7684\u6302\u8d77\u8fdb\u7a0b<\/p>\n<p>&#8230;&#8230;<\/p>\n<p>root 3389649 3389648 0 Mar27 ? 00:00:00 \/usr\/bin\/python3\u00a0\/opt\/zbxTrapperTPS\/zbxTrapperSumItem.py<\/p>\n<p>&#8230;&#8230;<\/p>\n<h3>&#xff11;.&#xff13;\u4f7f\u7528 pkill \u4e00\u6b21\u6027\u7ec8\u6b62\u6240\u6709\u76f8\u5173\u8fdb\u7a0b<\/h3>\n<p>pkill -f zbxTrapperSumItem.py<\/p>\n<h2>2. \u5e38\u7528\u6392\u67e5sql<\/h2>\n<p>1. \u67e5\u770b MySQL \u5f53\u524d\u5b9e\u9645\u4f7f\u7528\u7684\u5185\u5b58&#xff1a;<\/p>\n<p>SHOW ENGINE INNODB STATUS\\\\G;<\/p>\n<p>\u91cd\u70b9\u5173\u6ce8 BUFFER POOL AND MEMORY \u90e8\u5206\u3002<\/p>\n<\/p>\n<p>2. \u4f7f\u7528 SQL \u67e5\u8be2\u67e5\u770b\u5185\u5b58\u5206\u914d\u60c5\u51b5&#xff08;\u9700\u8981 performance_schema&#xff09;&#xff1a;<\/p>\n<p>SELECT EVENT_NAME,\u00a0 \u00a0 \u00a0 \u00a0 \u00a0CURRENT_COUNT_USED,\u00a0 \u00a0 \u00a0 \u00a0 \u00a0CURRENT_NUMBER_OF_BYTES_USED \/ (1024 * 1024) AS MB_USED FROM performance_schema.memory_summary_global_by_event_name WHERE EVENT_NAME LIKE &#039;memory\/%&#039; ORDER BY MB_USED DESC;<\/p>\n<\/p>\n<p>3.\u00a0\u5b9e\u65f6\u67e5\u770b buffer pool \u4f7f\u7528\u60c5\u51b5&#xff1a;<\/p>\n<p>SELECT\u00a0 \u00a0 \u00a0 (SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME &#061; &#039;Innodb_buffer_pool_pages_data&#039;) * 16 \/ 1024 AS used_mb, \u00a0 \u00a0 (SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME &#061; &#039;Innodb_buffer_pool_pages_free&#039;) * 16 \/ 1024 AS free_mb, \u00a0 \u00a0 (SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME &#061; &#039;Innodb_buffer_pool_pages_total&#039;) * 16 \/ 1024 AS total_mb;<\/p>\n<\/p>\n<p>4.\u00a0\u68c0\u67e5\u662f\u5426\u6709\u5176\u4ed6\u5185\u5b58\u6d88\u8017\u6e90<\/p>\n<p>&#8212; \u67e5\u770b\u5404\u6a21\u5757\u5185\u5b58\u4f7f\u7528\u60c5\u51b5&#xff08;\u9700\u5f00\u542f performance_schema&#xff09; SELECT EVENT_NAME,\u00a0 \u00a0 \u00a0 \u00a0 \u00a0CURRENT_NUMBER_OF_BYTES_USED \/ (1024 * 1024) AS MB_USED FROM performance_schema.memory_summary_global_by_event_name WHERE EVENT_NAME LIKE &#039;memory\/%&#039; ORDER BY MB_USED DESC;<\/p>\n<\/p>\n<p>5.\u00a0\u4f18\u5316\u8fde\u63a5\u6570\u4e0e\u4f1a\u8bdd\u5185\u5b58<\/p>\n<p>\u6bcf\u4e2a\u8fde\u63a5\u4e5f\u4f1a\u5206\u914d\u4e00\u5b9a\u5185\u5b58&#xff08;\u5982 sort_buffer_size, join_buffer_size \u7b49&#xff09;&#xff0c;\u5982\u679c\u8fde\u63a5\u6570\u591a\u6216\u67d0\u4e9b\u67e5\u8be2\u6548\u7387\u4f4e&#xff0c;\u4e5f\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u8fc7\u9ad8\u3002<\/p>\n<p>SHOW GLOBAL STATUS LIKE &#039;Threads_connected&#039;; SHOW GLOBAL VARIABLES LIKE &#039;max_connections&#039;; SHOW GLOBAL VARIABLES LIKE &#039;thread_stack&#039;;<\/p>\n<\/p>\n<p>6.\u00a0\u67e5\u770b\u5f53\u524d Sleep \u8fde\u63a5\u6570<\/p>\n<p>SELECT COUNT(*) AS sleep_connections\u00a0 FROM information_schema.processlist\u00a0 WHERE command &#061; &#039;Sleep&#039;;<\/p>\n<ul>\n<li>\n<p>\u4f18\u5316 MySQL \u914d\u7f6e\u53c2\u6570<\/p>\n<\/li>\n<\/ul>\n<p>[mysqld] wait_timeout &#061; 600 \u00a0 \u00a0 \u00a0 \u00a0 # \u975e\u4ea4\u4e92\u5f0f\u8fde\u63a5\u7684\u7a7a\u95f2\u8d85\u65f6\u65f6\u95f4&#xff08;\u5355\u4f4d&#xff1a;\u79d2&#xff09;&#xff0c;\u5efa\u8bae\u8bbe\u4e3a 10 \u5206\u949f interactive_timeout &#061; 600 \u00a0# \u4ea4\u4e92\u5f0f\u8fde\u63a5\u7684\u7a7a\u95f2\u8d85\u65f6\u65f6\u95f4<\/p>\n<p>\u4fee\u6539\u540e\u91cd\u542f MySQL \u6216\u901a\u8fc7 SQL \u52a8\u6001\u4fee\u6539<\/p>\n<p>SET GLOBAL wait_timeout &#061; 600; SET GLOBAL interactive_timeout &#061; 600;<\/p>\n<\/p>\n<ul>\n<li>\n<p>\u6740\u6389\u5f53\u524d Sleep \u8fde\u63a5&#xff08;\u4e34\u65f6\u5904\u7406&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>SELECT CONCAT(&#039;KILL &#039;, id, &#039;;&#039;) AS kill_command FROM information_schema.processlist WHERE command &#061; &#039;Sleep&#039; AND time &gt; 60;<\/p>\n<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb857\u6b21\uff0c\u70b9\u8d5e30\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u6240\u4ee5\uff0c\u5360\u5185\u5b58\u7684\u8fdb\u7a0b\u4e0d\u662fmysql\u53d1\u73b0\uff0c\u6709\u5f88\u591azbxTrapperSumItem.py\u7ecf\u67e5\uff0c\u8fd9\u4e2a\u811a\u672c\u662f\u7cfb\u7edf\u7684\u8ba1\u5212\u4efb\u52a1\uff0c1\u5206\u949f\u6267\u884c\u4e00\u6b21\uff0c\u6bcf\u6b21\u4e00\u6b21\u4e0d\u52305\u79d2\u3002\u51fa\u73b0\u51e0\u767e\u4e2a\u50f5\u5c38\/\u6302\u8d77\u8fdb\u7a0b\u662f\u56e0\u4e3a\u811a\u672c\u4e2d\u6709\u4e00\u4e2a\u6570\u636e\u5e93\u67e5\u8be2\uff08\u6570\u636e\u5e93\u5730\u5740\u66f4\u6362\u4e86\uff09\uff0c\u540e\u9762\u8981\u4f18\u5316\u811a\u672c\u4e86\u30021. \u67e5\u770b MySQL \u5f53\u524d\u5b9e\u9645\u4f7f\u7528\u7684\u5185\u5b58\uff1a\u91cd\u70b9\u5173\u6ce8  \u90e8\u5206\u30022. \u4f7f\u7528 SQL \u67e5\u8be2\u67e5\u770b\u5185\u5b58\u5206\u914d\u60c5\u51b5\uff08\u9700\u8981 performance_schema\uff09\uff1a3. \u5b9e\u65f6\u67e5\u770b buffer pool \u4f7f\u7528\u60c5\u51b5\uff1a4. \u68c0\u67e5\u662f\u5426\u6709\u5176\u4ed6\u5185\u5b58\u6d88\u8017\u6e905. \u4f18\u5316\u8fde\u63a5\u6570\u4e0e\u4f1a\u8bdd\u5185\u5b58\u6bcf\u4e2a\u8fde\u63a5\u4e5f\u4f1a\u5206<\/p>\n","protected":false},"author":2,"featured_media":45290,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[114],"topic":[],"class_list":["post-45292","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-mysql"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>mysql 8.028 \u670d\u52a1\u5668\u7684\u5185\u5b58\u4f7f\u7528\u7387\u9ad8\u4e8e90% - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb857\u6b21\uff0c\u70b9\u8d5e30\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u6240\u4ee5\uff0c\u5360\u5185\u5b58\u7684\u8fdb\u7a0b\u4e0d\u662fmysql\u53d1\u73b0\uff0c\u6709\u5f88\u591azbxTrapperSumItem.py\u7ecf\u67e5\uff0c\u8fd9\u4e2a\u811a\u672c\u662f\u7cfb\u7edf\u7684\u8ba1\u5212\u4efb\u52a1\uff0c1\u5206\u949f\u6267\u884c\u4e00\u6b21\uff0c\u6bcf\u6b21\u4e00\u6b21\u4e0d\u52305\u79d2\u3002\u51fa\u73b0\u51e0\u767e\u4e2a\u50f5\u5c38\/\u6302\u8d77\u8fdb\u7a0b\u662f\u56e0\u4e3a\u811a\u672c\u4e2d\u6709\u4e00\u4e2a\u6570\u636e\u5e93\u67e5\u8be2\uff08\u6570\u636e\u5e93\u5730\u5740\u66f4\u6362\u4e86\uff09\uff0c\u540e\u9762\u8981\u4f18\u5316\u811a\u672c\u4e86\u30021. \u67e5\u770b MySQL \u5f53\u524d\u5b9e\u9645\u4f7f\u7528\u7684\u5185\u5b58\uff1a\u91cd\u70b9\u5173\u6ce8 \u90e8\u5206\u30022. \u4f7f\u7528 SQL \u67e5\u8be2\u67e5\u770b\u5185\u5b58\u5206\u914d\u60c5\u51b5\uff08\u9700\u8981 performance_schema\uff09\uff1a3. \u5b9e\u65f6\u67e5\u770b buffer pool 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