\u4ee5\u4e0b\u7684\u6587\u7ae0\u4e3b\u8981\u662f\u5bf9MySQL\u6027\u80fd\u5f71\u54cd\u5173\u7cfb\u7d27\u5bc6\u7684\u4e94\u5927\u914d\u7f6e\u53c2\u6570\u7684\u4ecb\u7ecd\uff0c\u6211\u524d\u51e0\u5929\u5728\u76f8\u5173\u7f51\u7ad9\u770b\u89c1\u5bf9MySQL\u6027\u80fd\u5f71\u54cd\u5173\u7cfb\u7d27\u5bc6\u7684\u4e94\u5927\u914d\u7f6e\u53c2\u6570\u7684\u8d44\u6599\uff0c\u89c9\u5f97\u633a\u597d\uff0c\u5c31\u62ff\u51fa\u6765\u4f9b\u5927\u5bb6\u5206\u4eab\uff0c\u671b\u4f60\u80fd\u6709\u6240\u6536\u83b7\u3002<\/p>\n
(\u4e00)\u8fde\u63a5<\/p>\n
\u3000\u3000\u8fde\u63a5\u901a\u5e38\u6765\u81eaWeb\u670d\u52a1\u5668\uff0c\u4e0b\u9762\u5217\u51fa\u4e86\u4e00\u4e9b\u4e0e\u8fde\u63a5\u6709\u5173\u7684\u53c2\u6570\uff0c\u4ee5\u53ca\u8be5\u5982\u4f55\u8bbe\u7f6e\u5b83\u4eec\u3002<\/p>\n
\u3000\u30001\u3001max_connections<\/p>\n
\u3000\u3000\u8fd9\u662fWeb\u670d\u52a1\u5668\u5141\u8bb8\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u8bb0\u4f4f\u6bcf\u4e2a\u8fde\u63a5\u90fd\u8981\u4f7f\u7528\u4f1a\u8bdd\u5185\u5b58(\u5173\u4e8e\u4f1a\u8bdd\u5185\u5b58\uff0c\u6587\u7ae0\u540e\u9762\u6709\u6d89\u53ca)\u3002<\/p>\n
\u3000\u30002\u3001max_packet_allowed<\/p>\n
\u3000\u3000\u6700\u5927\u6570\u636e\u5305\u5927\u5c0f\uff0c\u901a\u5e38\u7b49\u4e8e\u4f60\u9700\u8981\u5728\u4e00\u4e2a\u5927\u5757\u4e2d\u8fd4\u56de\u7684\u6700\u5927\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u5982\u679c\u4f60\u5728\u4f7f\u7528\u8fdc\u7a0bmysqldump\uff0c\u90a3\u5b83\u7684\u503c\u9700\u8981\u66f4\u5927\u3002<\/p>\n
\u3000\u30003\u3001aborted_connects<\/p>\n
\u3000\u3000\u68c0\u67e5\u7cfb\u7edf\u72b6\u6001\u7684\u8ba1\u6570\u5668\uff0c\u786e\u5b9a\u5176\u6ca1\u6709\u589e\u957f\uff0c\u5982\u679c\u6570\u91cf\u589e\u957f\u8bf4\u660e\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6\u9047\u5230\u4e86\u9519\u8bef\u3002<\/p>\n
\u3000\u30004\u3001thread_cache_size<\/p>\n
\u3000\u3000\u5165\u7ad9\u8fde\u63a5\u4f1a\u5728MySQL\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\uff0c\u56e0\u4e3aMySQL\u4e2d\u6253\u5f00\u548c\u5173\u95ed\u8fde\u63a5\u90fd\u5f88\u5ec9\u4ef7\uff0c\u901f\u5ea6\u4e5f\u5feb\uff0c\u5b83\u5c31\u6ca1\u6709\u8c61\u5176\u5b83\u6570\u636e\u5e93\uff0c\u5982Oracle\u90a3\u4e48\u591a\u6301\u7eed\u8fde\u63a5\u4e86\uff0c\u4f46\u7ebf\u7a0b\u9884\u5148\u521b\u5efa\u5e76\u4e0d\u4f1a\u8282\u7ea6\u65f6\u95f4\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u8981MySQL\u7ebf\u7a0b\u7f13\u5b58\u7684\u539f\u56e0\u4e86\u3002<\/p>\n
\u3000\u3000\u5982\u679c\u5728\u589e\u957f\u8bf7\u5bc6\u5207\u6ce8\u610f\u521b\u5efa\u7684\u7ebf\u7a0b\uff0c\u8ba9\u4f60\u7684\u7ebf\u7a0b\u7f13\u5b58\u66f4\u5927\uff0c\u5bf9\u4e8e2550\u6216100\u7684thread_cache_size\uff0c\u5185\u5b58\u5360\u7528\u4e5f\u4e0d\u591a\u3002<\/p>\n
\u3000\u3000(\u4e8c)\u67e5\u8be2\u7f13\u5b58<\/p>\n
\u3000\u3000(\u4e09)\u4e34\u65f6\u8868<\/p>\n
\u3000\u3000\u5185\u5b58\u901f\u5ea6\u662f\u76f8\u5f53\u5feb\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u5e0c\u671b\u6240\u6709\u7684\u6392\u5e8f\u64cd\u4f5c\u90fd\u5728\u5185\u5b58\u4e2d\u8fdb\u884c\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u67e5\u8be2\u8ba9\u7ed3\u679c\u96c6\u66f4\u5c0f\u4ee5\u5b9e\u73b0\u5185\u5b58\u6392\u5e8f\uff0c\u6216\u5c06\u53d8\u91cf\u8bbe\u7f6e\u5f97\u66f4\u5927\u3002<\/p>\n
\u3000\u3000tmp_table_size<\/p>\n
\u3000\u3000max_heap_table_size<\/p>\n
\u3000\u3000\u65e0\u8bba\u4f55\u65f6\u5728MySQL\u4e2d\u521b\u5efa\u4e34\u65f6\u8868\uff0c\u5b83\u90fd\u4f1a\u4f7f\u7528\u8fd9\u4e24\u4e2a\u53d8\u91cf\u7684\u6700\u5c0f\u503c\u4f5c\u4e3a\u4e34\u754c\u503c\uff0c\u9664\u4e86\u5728\u78c1\u76d8\u4e0a\u6784\u5efa\u4e34\u65f6\u8868\u5916\uff0c\u8fd8\u4f1a\u521b\u5efa\u8bb8\u591a\u4f1a\u8bdd\uff0c\u8fd9\u4e9b\u4f1a\u8bdd\u4f1a\u62a2\u5360\u6709 \u9650\u5236\u7684\u8d44\u6e90\uff0c\u56e0\u6b64\u6700\u597d\u662f\u8c03\u6574\u67e5\u8be2\u800c\u4e0d\u662f\u5c06\u8fd9\u4e9b\u53c2\u6570\u8bbe\u7f6e\u5f97\u66f4\u9ad8\uff0c\u540c\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u6709BLOB\u6216TEXT\u5b57\u6bb5\u7c7b\u578b\u7684\u8868\u5c06\u76f4\u63a5\u5199\u5165\u78c1\u76d8\u3002 \u6df1\u5165\u6d45\u51faMySQL\u53cc\u5411\u590d\u5236\u6280\u672f<\/p>\n
\u3000\u3000(\u56db)\u4f1a\u8bdd\u5185\u5b58<\/p>\n
\u3000\u3000MySQL\u4e2d\u6bcf\u4e2a\u4f1a\u8bdd\u90fd\u6709\u5176\u81ea\u5df1\u7684\u5185\u5b58\uff0c\u8fd9\u4e2a\u5185\u5b58\u5c31\u662f\u5206\u914d\u7ed9SQL\u67e5\u8be2\u7684\u5185\u5b58\uff0c\u56e0\u6b64\u4f60\u60f3\u8ba9\u5b83\u53d8\u5f97\u5c3d\u53ef\u80fd\u5927\u4ee5\u6ee1\u8db3\u9700\u8981\u3002\u4f46\u4f60\u4e0d\u5f97\u4e0d\u5e73\u8861\u540c\u4e00\u65f6\u95f4\u6570 \u636e\u5e93\u5185\u4e00\u81f4\u6027\u4f1a\u8bdd\u7684\u6570\u91cf\u3002\u8fd9\u91cc\u663e\u5f97\u6709\u70b9\u9ed1\u8272\u827a\u672f\u7684\u662fMySQL\u662f\u6309\u9700\u5206\u914d\u7f13\u5b58\u7684\uff0c\u56e0\u6b64\uff0c\u4f60\u4e0d\u80fd\u53ea\u6dfb\u52a0\u5b83\u4eec\u5e76\u4e58\u4ee5\u4f1a\u8bdd\u7684\u6570\u91cf\uff0c\u8fd9\u6837\u4f30\u7b97\u4e0b\u6765\u6bd4MySQL\u5178\u578b \u7684\u4f7f\u7528\u8981\u5927\u5f97\u591a\u3002<\/p>\n
\u3000\u3000\u6700\u4f73\u505a\u6cd5\u662f\u542f\u52a8MySQL\uff0c\u8fde\u63a5\u6240\u6709\u4f1a\u8bdd\uff0c\u7136\u540e\u7ee7\u7eed\u5173\u6ce8\u9876\u7ea7\u4f1a\u8bdd\u7684VIRT\u5217\uff0cmysqld\u884c\u7684\u6570\u76ee\u901a\u5e38\u4fdd\u6301\u76f8\u5bf9\u7a33\u5b9a\uff0c\u8fd9\u5c31\u662f\u5b9e\u9645\u7684\u5185\u5b58 \u603b\u7528\u91cf\uff0c\u51cf\u53bb\u6240\u6709\u7684\u9759\u6001MySQL\u5185\u5b58\u533a\u57df\uff0c\u5c31\u5f97\u5230\u4e86\u5b9e\u9645\u7684\u6240\u6709\u4f1a\u8bdd\u5185\u5b58\uff0c\u7136\u540e\u9664\u4ee5\u4f1a\u8bdd\u7684\u6570\u91cf\u5c31\u5f97\u5230\u5e73\u5747\u503c\u3002<\/p>\n
\u3000\u30001\u3001read_buffer_size<\/p>\n
\u3000\u3000\u7f13\u5b58\u8fde\u7eed\u626b\u63cf\u7684\u5757\uff0c\u8fd9\u4e2a\u7f13\u5b58\u662f\u8de8\u5b58\u50a8\u5f15\u64ce\u7684\uff0c\u4e0d\u53ea\u662fMyISAM\u8868\u3002<\/p>\n
\u3000\u30002\u3001sort_buffer_size<\/p>\n
\u3000\u3000\u6267\u884c\u6392\u5e8f\u7f13\u5b58\u533a\u7684\u5927\u5c0f\uff0c\u6700\u597d\u5c06\u5176\u8bbe\u7f6e\u4e3a1M-2M\uff0c\u7136\u540e\u5728\u4f1a\u8bdd\u4e2d\u8bbe\u7f6e\uff0c\u4e3a\u4e00\u4e2a\u7279\u5b9a\u7684\u67e5\u8be2\u8bbe\u7f6e\u66f4\u9ad8\u7684\u503c\u3002<\/p>\n
\u3000\u30003\u3001join_buffer_size<\/p>\n
\u3000\u3000\u6267\u884c\u8054\u5408\u67e5\u8be2\u5206\u914d\u7684\u7f13\u5b58\u533a\u5927\u5c0f\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3a1M-2M\u5927\u5c0f\uff0c\u7136\u540e\u5728\u6bcf\u4e2a\u4f1a\u8bdd\u4e2d\u518d\u5355\u72ec\u6309\u9700\u8bbe\u7f6e\u3002<\/p>\n
\u3000\u30004\u3001read_rnd_buffer_size<\/p>\n
\u3000\u3000\u7528\u4e8e\u6392\u5e8f\u548corder by\u64cd\u4f5c\uff0c\u6700\u597d\u5c06\u5176\u8bbe\u7f6e\u4e3a1M\uff0c\u7136\u540e\u5728\u4f1a\u8bdd\u4e2d\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u4e00\u4e2a\u4f1a\u8bdd\u53d8\u91cf\u8bbe\u7f6e\u4e3a\u66f4\u5927\u7684\u503c\u3002<\/p>\n
\u3000\u3000(\u4e94)\u6162\u901f\u67e5\u8be2\u65e5\u5fd7<\/p>\n
\u3000\u3000\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u662fMySQL\u5f88\u6709\u7528\u7684\u4e00\u4e2a\u7279\u6027\u3002<\/p>\n
\u3000\u30001\u3001log_slow_queries<\/p>\n
\u3000\u3000MySQL\u53c2\u6570\u4e2dlog_slow_queries\u53c2\u6570\u5728f\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u5b83\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3aon\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cMySQL\u4f1a\u5c06\u6587\u4ef6\u653e\u5230\u6570\u636e\u76ee\u5f55\uff0c\u6587\u4ef6\u4ee5\u201c\u4e3b\u673a\u540d-slow.log\u201d\u7684\u5f62\u5f0f\u547d\u540d\uff0c\u4f46\u4f60\u5728\u8bbe\u7f6e\u8fd9\u4e2a\u9009\u9879\u7684\u65f6\u5019\u4e5f\u53ef\u4ee5\u4e3a\u5176\u6307\u5b9a\u4e00\u4e2a\u540d\u5b57\u3002<\/p>\n
\u3000\u30002\u3001long_query_time<\/p>\n
\u3000\u3000\u9ed8\u8ba4\u503c\u662f10\u79d2\uff0c\u4f60\u53ef\u4ee5\u52a8\u6001\u8bbe\u7f6e\u5b83\uff0c\u503c\u4ece1\u5230\u5c06\u5176\u8bbe\u7f6e\u4e3aon\uff0c\u5982\u679c\u6570\u636e\u5e93\u542f\u52a8\u4e86\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u65e5\u5fd7\u5c06\u5173\u95ed\u3002\u622a\u81f35.1.21\u548c\u5b89\u88c5\u4e86 Google\u8865\u4e01\u7684\u7248\u672c\uff0c\u8fd9\u4e2a\u9009\u9879\u53ef\u4ee5\u4ee5\u5fae\u79d2\u8bbe\u7f6e\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e86\u4e0d\u8d77\u7684\u529f\u80fd\uff0c\u56e0\u4e3a\u4e00\u65e6\u4f60\u6d88\u9664\u4e86\u6240\u6709\u67e5\u8be2\u65f6\u95f4\u8d85\u8fc71\u79d2\u7684\u67e5\u8be2\uff0c\u8bf4\u660e\u8c03\u6574\u975e\u5e38\u6210\u529f\uff0c\u8fd9\u6837\u53ef\u4ee5\u5e2e\u52a9 \u4f60\u5728\u95ee\u9898\u53d8\u5927\u4e4b\u524d\u6d88\u9664\u95ee\u9898SQL\u3002<\/p>\n
\u3000\u30003\u3001log_queries_not_using_indexes<\/p>\n
\u3000\u3000\u5f00\u542f\u8fd9\u4e2a\u9009\u9879\u662f\u4e2a\u4e0d\u9519\u7684\u4e3b\u610f\uff0c\u5b83\u771f\u5b9e\u5730\u8bb0\u5f55\u4e86\u8fd4\u56de\u6240\u6709\u884c\u7684\u67e5\u8be2\u3002<\/p>\n
\u3000\u3000\u5c0f\u7ed3<\/p>\n
\u3000\u3000\u6211\u4eec\u4ecb\u7ecd\u4e86MySQL\u53c2\u6570\u7684\u4e94\u5927\u7c7b\u8bbe\u7f6e\uff0c\u5e73\u65f6\u6211\u4eec\u4e00\u822c\u90fd\u5f88\u5c11\u78b0\u5b83\u4eec\uff0c\u5728\u8fdb\u884cMySQL\u6027\u80fd\u8c03\u4f18\u548c\u6545\u969c\u8bca\u65ad\u65f6\u8fd9\u4e9b\u53c2\u6570\u8fd8\u662f\u975e\u5e38\u6709\u7528\u7684\u3002<\/p>\n
\u3000\u3000MySQL\u4e2d\u7684\u7f13\u5b58\u67e5\u8be2\u5305\u62ec\u4e24\u4e2a\u89e3\u6790\u67e5\u8be2\u8ba1\u5212\uff0c\u4ee5\u53ca\u8fd4\u56de\u7684\u6570\u636e\u96c6\uff0c\u5982\u679c\u57fa\u7840\u8868\u6570\u636e\u6216\u7ed3\u6784\u6709\u53d8\u5316\uff0c\u5c06\u4f1a\u4f7f\u67e5\u8be2\u7f13\u5b58\u4e2d\u7684\u9879\u76ee\u65e0\u6548\u3002<\/p>\n
\u3000\u30001\u3001query_cache_min_res_unit<\/p>\n
\u3000\u3000MySQL\u53c2\u6570\u4e2dquery_cache_min_res_unit\u67e5\u8be2\u7f13\u5b58\u4e2d\u7684\u5757\u662f\u4ee5\u8fd9\u4e2a\u5927\u5c0f\u8fdb\u884c\u5206\u914d\u7684\uff0c\u4f7f\u7528\u4e0b\u9762\u7684\u516c\u5f0f\u8ba1\u7b97\u67e5\u8be2\u7f13\u5b58\u7684\u5e73\u5747\u5927\u5c0f\uff0c\u6839\u636e\u8ba1\u7b97\u7ed3\u679c\u8bbe\u7f6e\u8fd9\u4e2a\u53d8\u91cf\uff0cMySQL\u5c31\u4f1a\u66f4\u6709\u6548\u5730\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\uff0c\u7f13\u5b58\u66f4\u591a\u7684\u67e5\u8be2\uff0c\u51cf\u5c11\u5185\u5b58\u7684\u6d6a\u8d39\u3002<\/p>\n
\u3000\u30002\u3001query_cache_size<\/p>\n
\u3000\u3000\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u67e5\u8be2\u7f13\u5b58\u7684\u603b\u5927\u5c0f\u3002<\/p>\n
\u3000\u30003\u3001query_cache_limit<\/p>\n
\u3000\u3000\u8fd9\u4e2a\u53c2\u6570\u544a\u8bc9MySQL\u4e22\u6389\u5927\u4e8e\u8fd9\u4e2a\u5927\u5c0f\u7684\u67e5\u8be2\uff0c\u4e00\u822c\u5927\u578b\u67e5\u8be2\u8fd8\u662f\u6bd4\u8f83\u5c11\u89c1\u7684\uff0c\u5982\u8fd0\u884c\u4e00\u4e2a\u6279\u5904\u7406\u6267\u884c\u4e00\u4e2a\u5927\u578b\u62a5\u8868\u7684\u7edf\u8ba1\uff0c\u56e0\u6b64\u90a3\u4e9b\u5927\u578b\u7ed3\u679c\u96c6\u4e0d\u5e94\u8be5\u586b\u6ee1\u67e5\u8be2\u7f13\u5b58\u3002<\/p>\n
\u3000\u3000\u590d\u5236\u4ee3\u7801 \u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u3000\u3000qcache hit ratio = qcache_hits \/ (qcache_hits + com_select) <\/p>\n
\u4f7f\u7528 <\/p>\n
\u3000\u3000\u590d\u5236\u4ee3\u7801 \u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u3000\u3000SQL> show status like \u2018qcache%';
\nSQL> show status like \u2018com_%'; <\/p>\n
\u627e\u5230\u8fd9\u4e9b\u53d8\u91cf\u3002 <\/p>\n
\u3000\u3000\u590d\u5236\u4ee3\u7801 \u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u3000\u3000average query size = (query_cache_size \u2013 qcache_free_memory)\/qcache_queries_in_cache <\/p>\n
\u4f7f\u7528 <\/p>\n
\u3000\u3000\u590d\u5236\u4ee3\u7801 \u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u3000\u3000SQL> show variables like \u2018query%';
\nqcache_* status variables you can get with:
\nSQL> show status like \u2018qcache%'; <\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ee5\u4e0b\u7684\u6587\u7ae0\u4e3b\u8981\u662f\u5bf9MySQL\u6027\u80fd\u5f71\u54cd\u5173\u7cfb\u7d27\u5bc6\u7684\u4e94\u5927\u914d\u7f6e\u53c2\u6570\u7684\u4ecb\u7ecd\uff0c\u6211\u524d\u51e0\u5929\u5728\u76f8\u5173\u7f51\u7ad9\u770b\u89c1\u5bf9MySQL\u6027\u80fd\u5f71\u54cd\u5173\u7cfb\u7d27\u5bc6\u7684\u4e94\u5927\u914d\u7f6e\u53c2\u6570\u7684\u8d44\u6599\uff0c\u89c9\u5f97\u633a\u597d\uff0c\u5c31\u62ff\u51fa\u6765\u4f9b\u5927\u5bb6\u5206\u4eab\uff0c\u671b\u4f60\u80fd\u6709\u6240\u6536\u83b7\u3002 (\u4e00)\u8fde\u63a5 \u3000\u3000\u8fde\u63a5\u901a\u5e38\u6765\u81eaWeb\u670d\u52a1\u5668\uff0c\u4e0b\u9762\u5217\u51fa\u4e86\u4e00\u4e9b\u4e0e\u8fde\u63a5\u6709\u5173\u7684\u53c2\u6570\uff0c\u4ee5\u53ca\u8be5\u5982\u4f55\u8bbe\u7f6e\u5b83\u4eec\u3002 \u3000\u30001\u3001max_connections \u3000\u3000\u8fd9\u662fWeb\u670d\u52a1\u5668\u5141\u8bb8\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u8bb0\u4f4f\u6bcf\u4e2a\u8fde\u63a5\u90fd\u8981\u4f7f\u7528\u4f1a\u8bdd\u5185\u5b58(\u5173\u4e8e\u4f1a\u8bdd\u5185\u5b58\uff0c\u6587\u7ae0\u540e\u9762\u6709\u6d89\u53ca)\u3002 \u3000\u30002\u3001max_packet_allowed \u3000\u3000\u6700\u5927\u6570\u636e\u5305\u5927\u5c0f\uff0c\u901a\u5e38\u7b49\u4e8e\u4f60\u9700\u8981\u5728\u4e00\u4e2a\u5927\u5757\u4e2d\u8fd4\u56de\u7684\u6700\u5927\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u5982\u679c\u4f60\u5728\u4f7f\u7528\u8fdc\u7a0bmysqldump\uff0c\u90a3\u5b83\u7684\u503c\u9700\u8981\u66f4\u5927\u3002 \u3000\u30003\u3001aborted_connects \u3000\u3000\u68c0\u67e5\u7cfb\u7edf\u72b6\u6001\u7684\u8ba1\u6570\u5668\uff0c\u786e\u5b9a\u5176\u6ca1\u6709\u589e\u957f\uff0c\u5982\u679c\u6570\u91cf\u589e\u957f\u8bf4\u660e\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6\u9047\u5230\u4e86\u9519\u8bef\u3002 \u3000\u30004\u3001thread_cache_size \u3000\u3000\u5165\u7ad9\u8fde\u63a5\u4f1a\u5728MySQL\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\uff0c\u56e0\u4e3aMySQL\u4e2d\u6253\u5f00\u548c\u5173\u95ed\u8fde\u63a5\u90fd\u5f88\u5ec9\u4ef7\uff0c\u901f\u5ea6\u4e5f\u5feb\uff0c\u5b83\u5c31\u6ca1\u6709\u8c61\u5176\u5b83\u6570\u636e\u5e93\uff0c\u5982Oracle\u90a3\u4e48\u591a\u6301\u7eed\u8fde\u63a5\u4e86\uff0c\u4f46\u7ebf\u7a0b\u9884\u5148\u521b\u5efa\u5e76\u4e0d\u4f1a\u8282\u7ea6\u65f6\u95f4\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u8981MySQL\u7ebf\u7a0b\u7f13\u5b58\u7684\u539f\u56e0\u4e86\u3002 \u3000\u3000\u5982\u679c\u5728\u589e\u957f\u8bf7\u5bc6\u5207\u6ce8\u610f\u521b\u5efa\u7684\u7ebf\u7a0b\uff0c\u8ba9\u4f60\u7684\u7ebf\u7a0b\u7f13\u5b58\u66f4\u5927\uff0c\u5bf9\u4e8e2550\u6216100\u7684thread_cache_size\uff0c\u5185\u5b58\u5360\u7528\u4e5f\u4e0d\u591a\u3002 \u3000\u3000(\u4e8c)\u67e5\u8be2\u7f13\u5b58 \u3000\u3000(\u4e09)\u4e34\u65f6\u8868 \u3000\u3000\u5185\u5b58\u901f\u5ea6\u662f\u76f8\u5f53\u5feb\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u5e0c\u671b\u6240\u6709\u7684\u6392\u5e8f\u64cd\u4f5c\u90fd\u5728\u5185\u5b58\u4e2d\u8fdb\u884c\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u67e5\u8be2\u8ba9\u7ed3\u679c\u96c6\u66f4\u5c0f\u4ee5\u5b9e\u73b0\u5185\u5b58\u6392\u5e8f\uff0c\u6216\u5c06\u53d8\u91cf\u8bbe\u7f6e\u5f97\u66f4\u5927\u3002 \u3000\u3000tmp_table_size \u3000\u3000max_heap_table_size \u3000\u3000\u65e0\u8bba\u4f55\u65f6\u5728MySQL\u4e2d\u521b\u5efa\u4e34\u65f6\u8868\uff0c\u5b83\u90fd\u4f1a\u4f7f\u7528\u8fd9\u4e24\u4e2a\u53d8\u91cf\u7684\u6700\u5c0f\u503c\u4f5c\u4e3a\u4e34\u754c\u503c\uff0c\u9664\u4e86\u5728\u78c1\u76d8\u4e0a\u6784\u5efa\u4e34\u65f6\u8868\u5916\uff0c\u8fd8\u4f1a\u521b\u5efa\u8bb8\u591a\u4f1a\u8bdd\uff0c\u8fd9\u4e9b\u4f1a\u8bdd\u4f1a\u62a2\u5360\u6709 \u9650\u5236\u7684\u8d44\u6e90\uff0c\u56e0\u6b64\u6700\u597d\u662f\u8c03\u6574\u67e5\u8be2\u800c\u4e0d\u662f\u5c06\u8fd9\u4e9b\u53c2\u6570\u8bbe\u7f6e\u5f97\u66f4\u9ad8\uff0c\u540c\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u6709BLOB\u6216TEXT\u5b57\u6bb5\u7c7b\u578b\u7684\u8868\u5c06\u76f4\u63a5\u5199\u5165\u78c1\u76d8\u3002 \u6df1\u5165\u6d45\u51faMySQL\u53cc\u5411\u590d\u5236\u6280\u672f \u3000\u3000(\u56db)\u4f1a\u8bdd\u5185\u5b58 \u3000\u3000MySQL\u4e2d\u6bcf\u4e2a\u4f1a\u8bdd\u90fd\u6709\u5176\u81ea\u5df1\u7684\u5185\u5b58\uff0c\u8fd9\u4e2a\u5185\u5b58\u5c31\u662f\u5206\u914d\u7ed9SQL\u67e5\u8be2\u7684\u5185\u5b58\uff0c\u56e0\u6b64\u4f60\u60f3\u8ba9\u5b83\u53d8\u5f97\u5c3d\u53ef\u80fd\u5927\u4ee5\u6ee1\u8db3\u9700\u8981\u3002\u4f46\u4f60\u4e0d\u5f97\u4e0d\u5e73\u8861\u540c\u4e00\u65f6\u95f4\u6570 \u636e\u5e93\u5185\u4e00\u81f4\u6027\u4f1a\u8bdd\u7684\u6570\u91cf\u3002\u8fd9\u91cc\u663e\u5f97\u6709\u70b9\u9ed1\u8272\u827a\u672f\u7684\u662fMySQL\u662f\u6309\u9700\u5206\u914d\u7f13\u5b58\u7684\uff0c\u56e0\u6b64\uff0c\u4f60\u4e0d\u80fd\u53ea\u6dfb\u52a0\u5b83\u4eec\u5e76\u4e58\u4ee5\u4f1a\u8bdd\u7684\u6570\u91cf\uff0c\u8fd9\u6837\u4f30\u7b97\u4e0b\u6765\u6bd4MySQL\u5178\u578b \u7684\u4f7f\u7528\u8981\u5927\u5f97\u591a\u3002 \u3000\u3000\u6700\u4f73\u505a\u6cd5\u662f\u542f\u52a8MySQL\uff0c\u8fde\u63a5\u6240\u6709\u4f1a\u8bdd\uff0c\u7136\u540e\u7ee7\u7eed\u5173\u6ce8\u9876\u7ea7\u4f1a\u8bdd\u7684VIRT\u5217\uff0cmysqld\u884c\u7684\u6570\u76ee\u901a\u5e38\u4fdd\u6301\u76f8\u5bf9\u7a33\u5b9a\uff0c\u8fd9\u5c31\u662f\u5b9e\u9645\u7684\u5185\u5b58 \u603b\u7528\u91cf\uff0c\u51cf\u53bb\u6240\u6709\u7684\u9759\u6001MySQL\u5185\u5b58\u533a\u57df\uff0c\u5c31\u5f97\u5230\u4e86\u5b9e\u9645\u7684\u6240\u6709\u4f1a\u8bdd\u5185\u5b58\uff0c\u7136\u540e\u9664\u4ee5\u4f1a\u8bdd\u7684\u6570\u91cf\u5c31\u5f97\u5230\u5e73\u5747\u503c\u3002 \u3000\u30001\u3001read_buffer_size \u3000\u3000\u7f13\u5b58\u8fde\u7eed\u626b\u63cf\u7684\u5757\uff0c\u8fd9\u4e2a\u7f13\u5b58\u662f\u8de8\u5b58\u50a8\u5f15\u64ce\u7684\uff0c\u4e0d\u53ea\u662fMyISAM\u8868\u3002 \u3000\u30002\u3001sort_buffer_size \u3000\u3000\u6267\u884c\u6392\u5e8f\u7f13\u5b58\u533a\u7684\u5927\u5c0f\uff0c\u6700\u597d\u5c06\u5176\u8bbe\u7f6e\u4e3a1M-2M\uff0c\u7136\u540e\u5728\u4f1a\u8bdd\u4e2d\u8bbe\u7f6e\uff0c\u4e3a\u4e00\u4e2a\u7279\u5b9a\u7684\u67e5\u8be2\u8bbe\u7f6e\u66f4\u9ad8\u7684\u503c\u3002 \u3000\u30003\u3001join_buffer_size \u3000\u3000\u6267\u884c\u8054\u5408\u67e5\u8be2\u5206\u914d\u7684\u7f13\u5b58\u533a\u5927\u5c0f\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3a1M-2M\u5927\u5c0f\uff0c\u7136\u540e\u5728\u6bcf\u4e2a\u4f1a\u8bdd\u4e2d\u518d\u5355\u72ec\u6309\u9700\u8bbe\u7f6e\u3002 \u3000\u30004\u3001read_rnd_buffer_size \u3000\u3000\u7528\u4e8e\u6392\u5e8f\u548corder by\u64cd\u4f5c\uff0c\u6700\u597d\u5c06\u5176\u8bbe\u7f6e\u4e3a1M\uff0c\u7136\u540e\u5728\u4f1a\u8bdd\u4e2d\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u4e00\u4e2a\u4f1a\u8bdd\u53d8\u91cf\u8bbe\u7f6e\u4e3a\u66f4\u5927\u7684\u503c\u3002 \u3000\u3000(\u4e94)\u6162\u901f\u67e5\u8be2\u65e5\u5fd7 \u3000\u3000\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u662fMySQL\u5f88\u6709\u7528\u7684\u4e00\u4e2a\u7279\u6027\u3002 \u3000\u30001\u3001log_slow_queries \u3000\u3000MySQL\u53c2\u6570\u4e2dlog_slow_queries\u53c2\u6570\u5728f\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u5b83\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3aon\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cMySQL\u4f1a\u5c06\u6587\u4ef6\u653e\u5230\u6570\u636e\u76ee\u5f55\uff0c\u6587\u4ef6\u4ee5\u201c\u4e3b\u673a\u540d-slow.log\u201d\u7684\u5f62\u5f0f\u547d\u540d\uff0c\u4f46\u4f60\u5728\u8bbe\u7f6e\u8fd9\u4e2a\u9009\u9879\u7684\u65f6\u5019\u4e5f\u53ef\u4ee5\u4e3a\u5176\u6307\u5b9a\u4e00\u4e2a\u540d\u5b57\u3002 \u3000\u30002\u3001long_query_time \u3000\u3000\u9ed8\u8ba4\u503c\u662f10\u79d2\uff0c\u4f60\u53ef\u4ee5\u52a8\u6001\u8bbe\u7f6e\u5b83\uff0c\u503c\u4ece1\u5230\u5c06\u5176\u8bbe\u7f6e\u4e3aon\uff0c\u5982\u679c\u6570\u636e\u5e93\u542f\u52a8\u4e86\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u65e5\u5fd7\u5c06\u5173\u95ed\u3002\u622a\u81f35.1.21\u548c\u5b89\u88c5\u4e86 Google\u8865\u4e01\u7684\u7248\u672c\uff0c\u8fd9\u4e2a\u9009\u9879\u53ef\u4ee5\u4ee5\u5fae\u79d2\u8bbe\u7f6e\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e86\u4e0d\u8d77\u7684\u529f\u80fd\uff0c\u56e0\u4e3a\u4e00\u65e6\u4f60\u6d88\u9664\u4e86\u6240\u6709\u67e5\u8be2\u65f6\u95f4\u8d85\u8fc71\u79d2\u7684\u67e5\u8be2\uff0c\u8bf4\u660e\u8c03\u6574\u975e\u5e38\u6210\u529f\uff0c\u8fd9\u6837\u53ef\u4ee5\u5e2e\u52a9 \u4f60\u5728\u95ee\u9898\u53d8\u5927\u4e4b\u524d\u6d88\u9664\u95ee\u9898SQL\u3002 \u3000\u30003\u3001log_queries_not_using_indexes \u3000\u3000\u5f00\u542f\u8fd9\u4e2a\u9009\u9879\u662f\u4e2a\u4e0d\u9519\u7684\u4e3b\u610f\uff0c\u5b83\u771f\u5b9e\u5730\u8bb0\u5f55\u4e86\u8fd4\u56de\u6240\u6709\u884c\u7684\u67e5\u8be2\u3002 \u3000\u3000\u5c0f\u7ed3 \u3000\u3000\u6211\u4eec\u4ecb\u7ecd\u4e86MySQL\u53c2\u6570\u7684\u4e94\u5927\u7c7b\u8bbe\u7f6e\uff0c\u5e73\u65f6\u6211\u4eec\u4e00\u822c\u90fd\u5f88\u5c11\u78b0\u5b83\u4eec\uff0c\u5728\u8fdb\u884cMySQL\u6027\u80fd\u8c03\u4f18\u548c\u6545\u969c\u8bca\u65ad\u65f6\u8fd9\u4e9b\u53c2\u6570\u8fd8\u662f\u975e\u5e38\u6709\u7528\u7684\u3002 \u3000\u3000MySQL\u4e2d\u7684\u7f13\u5b58\u67e5\u8be2\u5305\u62ec\u4e24\u4e2a\u89e3\u6790\u67e5\u8be2\u8ba1\u5212\uff0c\u4ee5\u53ca\u8fd4\u56de\u7684\u6570\u636e\u96c6\uff0c\u5982\u679c\u57fa\u7840\u8868\u6570\u636e\u6216\u7ed3\u6784\u6709\u53d8\u5316\uff0c\u5c06\u4f1a\u4f7f\u67e5\u8be2\u7f13\u5b58\u4e2d\u7684\u9879\u76ee\u65e0\u6548\u3002 \u3000\u30001\u3001query_cache_min_res_unit \u3000\u3000MySQL\u53c2\u6570\u4e2dquery_cache_min_res_un…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[83,101],"tags":[],"class_list":["post-1416","post","type-post","status-publish","format-standard","hentry","category-mysql","category-101"],"_links":{"self":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1416"}],"version-history":[{"count":1,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1416\/revisions"}],"predecessor-version":[{"id":1417,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1416\/revisions\/1417"}],"wp:attachment":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}