{"id":33959,"date":"2026-11-06T12:00:00","date_gmt":"2026-11-06T04:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33959"},"modified":"2026-10-29T12:01:08","modified_gmt":"2026-10-29T04:01:08","slug":"mysql-memory-tuning-buffer-pool","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/mysql-memory-tuning-buffer-pool\/","title":{"rendered":"MySQL \u5360\u7528\u5185\u5b58\u8fc7\u9ad8\u8c03\u4f18\uff1abuffer pool \u4e0e\u8fde\u63a5\u6570\u53c2\u6570\u5b9e\u6d4b"},"content":{"rendered":"

\"MySQL<\/p>\n

\u51cc\u6668\u6536\u5230\u670d\u52a1\u5668\u5185\u5b58\u544a\u8b66\uff0c\u767b\u4e0a\u53bb\u4e00\u770b\uff0cmysqld<\/code> \u4e00\u4e2a\u8fdb\u7a0b\u5403\u6389\u4e86\u6574\u673a 70% \u4ee5\u4e0a\u7684\u5185\u5b58\uff0c\u7f51\u7ad9\u54cd\u5e94\u4e5f\u8ddf\u7740\u53d8\u6162\u2014\u2014\u8fd9\u4e2a\u573a\u666f\u5f88\u591a\u7ad9\u957f\u90fd\u4e0d\u964c\u751f\u3002\u5927\u591a\u6570\u4eba\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u628a MySQL \u914d\u7f6e\u5f80\u5c0f\u6539\uff0c\u5e0c\u671b\u5b83\u5c11\u5360\u70b9\u5185\u5b58\uff0c\u7ed3\u679c\u7f13\u5b58\u547d\u4e2d\u7387\u6389\u4e0b\u6765\uff0c\u6570\u636e\u5e93\u53cd\u800c\u66f4\u6162\u4e86\u3002\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u8fd9\u79cd\u8d8a\u8c03\u8d8a\u7cdf\u7684\u60c5\u51b5\uff1f\u56e0\u4e3a MySQL \u5360\u7528\u5185\u5b58\u8fc7\u9ad8\u5728\u591a\u6570\u60c5\u51b5\u4e0b\u4e0d\u662f”\u75c5”\uff0c\u800c\u662f\u5b83\u5728\u6309\u4f60\u7ed9\u5b83\u7684\u914d\u989d\u7f13\u5b58\u6570\u636e\u3002\u8fd9\u7bc7\u6587\u7ae0\u4f1a\u5e26\u4f60\u5148\u641e\u6e05\u695a\u5185\u5b58\u5230\u5e95\u88ab\u8c01\u62ff\u8d70\u4e86\uff0c\u518d\u901a\u8fc7\u4e00\u7ec4\u5b9e\u6d4b\u6570\u636e\uff0c\u6559\u4f60\u5982\u4f55\u8c03\u6574 buffer pool \u548c\u8fde\u63a5\u6570\u76f8\u5173\u53c2\u6570\uff0c\u5728\u4e0d\u727a\u7272\u6027\u80fd\u7684\u524d\u63d0\u4e0b\u89e3\u51b3\u5185\u5b58\u544a\u8b66\u95ee\u9898\u3002<\/p>\n

\u672c\u6587\u7684\u5b9e\u6d4b\u73af\u5883\u662f\u4e00\u53f0 4 \u6838 8GB \u5185\u5b58\u7684\u72ec\u7acb\u670d\u52a1\u5668<\/a>\uff0cMySQL 8.0\uff0c\u6570\u636e\u91cf\u7ea6 6GB\u3002\u914d\u7f6e\u4e0d\u540c\u7684\u673a\u5668\u540c\u6837\u9002\u7528\u6587\u4e2d\u7684\u516c\u5f0f\u548c\u9a8c\u8bc1\u65b9\u6cd5\uff0c\u53ea\u662f\u6570\u503c\u9700\u6309\u6bd4\u4f8b\u6362\u7b97\u3002<\/p>\n

\u5148\u641e\u6e05\u695a\uff1aMySQL \u7684\u5185\u5b58\u90fd\u82b1\u5728\u54ea\u4e86<\/h2>\n

\u5728\u52a8\u624b\u6539\u4efb\u4f55\u53c2\u6570\u4e4b\u524d\uff0c\u5148\u8981\u5f04\u660e\u767d\u5185\u5b58\u6784\u6210\uff0c\u5426\u5219\u8c03\u4e86\u4e00\u4e2a\u53c2\u6570\u3001\u5b9e\u9645\u5403\u5185\u5b58\u7684\u5374\u662f\u53e6\u4e00\u4e2a\u3002MySQL 8.0 \u7684\u5185\u5b58\u5927\u5934\u96c6\u4e2d\u5728\u56db\u5757\uff1a\u5360\u6bd4\u6700\u9ad8\u7684 InnoDB Buffer Pool<\/strong>\uff08\u6570\u636e\u9875\u548c\u7d22\u5f15\u9875\u7f13\u5b58\uff0c\u9ed8\u8ba4 128MB\uff0c\u5f88\u591a”\u4f18\u5316\u6a21\u677f”\u4f1a\u76f4\u63a5\u7ed9\u5230\u7269\u7406\u5185\u5b58\u7684 50%-75%\uff09\uff1b\u6bcf\u4e2a\u8fde\u63a5\u7684\u7ebf\u7a0b\u5185\u5b58<\/strong>\uff08sort_buffer_size<\/code>\u3001join_buffer_size<\/code> \u7b49\u53c2\u6570\u6bcf\u8fde\u63a5\u5206\u914d\uff0c256 \u4e2a\u8fde\u63a5\u4e58\u4ee5\u51e0 MB \u5c31\u662f\u597d\u51e0\u4e2a GB\uff09\uff1b\u9ed8\u8ba4\u5f00\u542f\u7684 performance_schema<\/code> \u7edf\u8ba1\u5f00\u9500\uff088.0 \u4e0b\u7ea6 100-400MB\uff09\uff1b\u4ee5\u53ca\u5927\u67e5\u8be2\u4e34\u65f6\u8868\u7b49\u6ce2\u52a8\u9879\u3002<\/p>\n

\u4e00\u4e2a\u5b9e\u9645\u6848\u4f8b\u53ef\u4ee5\u8bf4\u660e”\u6bcf\u8fde\u63a5\u5185\u5b58”\u7684\u5a01\u529b\uff1a\u6d4b\u8bd5\u673a\u4e0a\u66fe\u6709\u5e94\u7528\u628a max_connections<\/code> \u8bbe\u6210 1000\uff0c\u540c\u65f6 sort_buffer_size<\/code> \u914d\u4e86 4MB\u3002\u4e4d\u770b\u53ea\u662f\u4e24\u4e2a\u666e\u901a\u6570\u5b57\uff0c\u4f46\u6309\u6700\u574f\u60c5\u51b5\u7b97\uff0c\u5149\u6392\u5e8f\u7f13\u51b2\u7406\u8bba\u4e0a\u5c31\u80fd\u81a8\u80c0\u5230 4GB\u2014\u2014\u8fd9\u5c31\u662f\u5185\u5b58\u544a\u8b66\u7684\u771f\u76f8\u3002<\/p>\n

\u600e\u4e48\u9a8c\u8bc1\u81ea\u5df1\u673a\u5668\u4e0a\u7684\u60c5\u51b5\uff1f\u7528\u4e0b\u9762\u8fd9\u6761\u547d\u4ee4\u67e5\u770b Buffer Pool \u7684\u5b9e\u9645\u914d\u7f6e\uff1a<\/p>\n

SHOW VARIABLES LIKE 'innodb_buffer_pool_size';\nSHOW VARIABLES LIKE 'max_connections';\n<\/code><\/pre>\n
\u8fd4\u56de\u7684\u5b57\u8282\u6570\u6362\u7b97\u6210 GB \u540e\uff0c\u548c free -h<\/code> \u91cc mysqld \u7684\u5b9e\u9645\u5360\u7528\u5bf9\u4e00\u4e0b\uff0c\u5c31\u80fd\u5927\u81f4\u5224\u65ad\u5185\u5b58\u4e3b\u8981\u88ab\u54ea\u4e00\u5757\u5403\u6389\u3002\u5982\u679c Buffer Pool \u53ea\u914d\u4e86 128MB \u4f46\u8fdb\u7a0b\u5360\u4e86 5GB\uff0c\u90a3\u95ee\u9898\u51e0\u4e4e\u4e00\u5b9a\u51fa\u5728\u8fde\u63a5\u6570\u6216\u6bcf\u8fde\u63a5\u7f13\u51b2\u533a\u4e0a\u3002<\/p>\n
\"Buffer<\/p>\n
Buffer Pool \u5b9e\u6d4b\uff1a\u591a\u5927\u624d\u5408\u9002<\/h2>\n
Buffer Pool \u7684\u7ecf\u5178\u516c\u5f0f\u662f\u7269\u7406\u5185\u5b58\u7684 50%-75%\uff0c\u4f46\u8fd9\u4e2a\u6bd4\u4f8b\u53ea\u9002\u7528\u4e8e\u4e13\u7528\u6570\u636e\u5e93\u670d\u52a1\u5668<\/strong>\u3002\u5982\u679c\u673a\u5668\u4e0a\u8fd8\u8dd1\u7740 Web \u670d\u52a1\u3001PHP-FPM\u3001Redis\uff0c\u5c31\u8981\u7ed9\u5b83\u4eec\u7559\u51fa\u7a7a\u95f4\u3002\u4e3a\u9a8c\u8bc1\u4e0d\u540c\u914d\u7f6e\u7684\u771f\u5b9e\u5dee\u5f02\uff0c\u6211\u4eec\u5728\u6d4b\u8bd5\u673a\u4e0a\u4f9d\u6b21\u628a Buffer Pool \u8bbe\u4e3a 1GB\u30014GB\u30016GB\uff0c\u6bcf\u7ec4\u8dd1 30 \u5206\u949f\u6df7\u5408\u8bfb\u5199\u538b\u6d4b\uff08\u8bfb\u4e3a\u4e3b\uff0c\u7ea6 8:2\uff09\uff1a<\/p>\n\n\n\n\n\n\n\n
Buffer Pool<\/th>\n\u7a7a\u8f7d\u5185\u5b58<\/th>\n\u538b\u6d4b\u540e\u5185\u5b58<\/th>\n\u7f13\u5b58\u547d\u4e2d\u7387<\/th>\n\u5e73\u5747\u5ef6\u8fdf<\/th>\n<\/tr>\n<\/thead>\n
1GB<\/td>\n0.9GB<\/td>\n1.6GB<\/td>\n87.2%<\/td>\n4.8ms<\/td>\n<\/tr>\n
4GB<\/td>\n3.8GB<\/td>\n4.5GB<\/td>\n99.1%<\/td>\n1.2ms<\/td>\n<\/tr>\n
6GB<\/td>\n5.7GB<\/td>\n6.4GB<\/td>\n99.3%<\/td>\n1.1ms<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u8fd9\u7ec4\u6570\u636e\u8bf4\u660e\u4e24\u4e2a\u95ee\u9898\u3002\u7b2c\u4e00\uff0c\u4ece 1GB \u63d0\u5230 4GB\uff0c\u547d\u4e2d\u7387\u4ece 87% \u8df3\u5230 99%\uff0c\u5ef6\u8fdf\u964d\u5230\u7ea6\u56db\u5206\u4e4b\u4e00\u2014\u2014\u6570\u636e\u91cf 6GB \u7684\u5e93\uff0cBuffer Pool \u81f3\u5c11\u8981\u80fd\u88c5\u4e0b\u70ed\u70b9\u6570\u636e\u96c6\u624d\u6709\u610f\u4e49\u3002\u7b2c\u4e8c\uff0c\u4ece 4GB \u63d0\u5230 6GB \u53ea\u6362\u6765 0.2 \u4e2a\u767e\u5206\u70b9\u7684\u547d\u4e2d\u7387\u63d0\u5347\uff0c\u591a\u82b1 2GB \u5185\u5b58\u6536\u76ca\u5fae\u4e4e\u5176\u5fae\u3002\u70ed\u70b9\u6570\u636e\u96c6\u7684\u5927\u5c0f\u624d\u662f\u51b3\u5b9a\u6027\u56e0\u7d20\uff0c\u76f2\u76ee\u5806\u5230\u7269\u7406\u5185\u5b58\u7684 75% \u5e76\u4e0d\u5212\u7b97\u3002<\/p>\n
\u4fee\u6539 Buffer Pool \u6709\u4e24\u79cd\u65b9\u5f0f\u3002MySQL 8.0 \u652f\u6301\u5728\u7ebf\u8c03\u6574\uff0c\u4e0d\u7528\u91cd\u542f\uff1aSET GLOBAL innodb_buffer_pool_size = 4294967296;<\/code>\uff08\u5373 4GB\uff09\u3002\u5728\u7ebf\u8c03\u6574\u662f\u5206\u5757\u6e10\u8fdb\u7684\uff0c\u5927\u5185\u5b58\u5b9e\u4f8b\u4e0a\u53ef\u80fd\u6301\u7eed\u51e0\u5206\u949f\uff0c\u5efa\u8bae\u5728\u4f4e\u5cf0\u671f\u6267\u884c\uff1b\u8981\u6c38\u4e45\u751f\u6548\uff0c\u518d\u628a innodb_buffer_pool_size = 4G<\/code> \u5199\u8fdb\u914d\u7f6e\u6587\u4ef6\u7684 [mysqld]<\/code> \u6bb5\u5373\u53ef\u3002<\/p>\n
\u8c03\u6574\u5b8c\u6210\u540e\uff0c\u7528 SHOW STATUS LIKE 'Innodb_buffer_pool_read%'<\/code> \u89c2\u5bdf\u547d\u4e2d\u7387\u53d8\u5316\uff0c\u786e\u8ba4\u65b0\u914d\u7f6e\u786e\u5b9e\u5e26\u6765\u6536\u76ca\u3002\u5bf9\u540c\u65f6\u627f\u8f7d\u591a\u4e2a\u7ad9\u70b9\u7684\u673a\u5668\uff0c\u6570\u636e\u5e93\u5f80\u5f80\u548c Web \u670d\u52a1\u5171\u4eab\u5185\u5b58\uff0c\u6211\u4eec\u5efa\u8bae\u6309”\u7269\u7406\u5185\u5b58\u51cf\u53bb\u5176\u4ed6\u670d\u52a1\u5cf0\u503c\u5360\u7528\uff0c\u518d\u7559 20% \u4f59\u91cf”\u6765\u5b9a Buffer Pool \u4e0a\u9650\uff0c\u800c\u4e0d\u662f\u5957\u7528\u56fa\u5b9a\u6bd4\u4f8b\u3002<\/p>\n
\u8fde\u63a5\u6570\u4e0e\u6bcf\u8fde\u63a5\u5185\u5b58\uff1a\u88ab\u5ffd\u89c6\u7684\u653e\u5927\u5668<\/h2>\n
Buffer Pool \u7684\u5927\u5c0f\u662f\u786e\u5b9a\u7684\uff0c\u8fde\u63a5\u5e26\u6765\u7684\u5185\u5b58\u5374\u662f\u5f39\u6027\u7684\uff0c\u8fd9\u4e5f\u662f\u5f88\u591a\u5185\u5b58\u544a\u8b66\u7684\u771f\u6b63\u6765\u6e90\u3002MySQL \u91cc\u771f\u6b63\u51b3\u5b9a\u7ebf\u7a0b\u6570\u7684\u53c2\u6570\u6709\u4e24\u4e2a\uff1amax_connections<\/code> \u662f\u5141\u8bb8\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u800c thread_cache_size<\/code> \u63a7\u5236\u7a7a\u95f2\u7ebf\u7a0b\u7684\u590d\u7528\u7f13\u5b58\u3002\u771f\u6b63\u5371\u9669\u7684\u662f\u90a3\u7ec4”\u6bcf\u8fde\u63a5\u7f13\u51b2\u533a”\u53c2\u6570\u2014\u2014\u5b83\u4eec\u5e73\u65f6\u53ea\u6309\u9700\u5206\u914d\u51e0 KB\uff0c\u4e00\u65e6\u67e5\u8be2\u6d89\u53ca\u5927\u6392\u5e8f\u6216\u5927\u5173\u8054\uff0c\u5c31\u4f1a\u6da8\u5230\u4f60\u914d\u7f6e\u7684\u4e0a\u9650\u3002<\/p>\n
\u6211\u4eec\u505a\u4e86\u8fd9\u6837\u4e00\u7ec4\u5b9e\u6d4b\uff1a\u540c\u4e00\u4e2a 8GB \u5b9e\u4f8b\u4e0a\uff0c\u4fdd\u6301 Buffer Pool 4GB \u4e0d\u53d8\uff0c\u5206\u522b\u7528 100 \u548c 400 \u4e2a\u5e76\u53d1\u8fde\u63a5\u8dd1\u76f8\u540c\u538b\u529b\u811a\u672c\uff0c\u5176\u4e2d 10% \u7684\u67e5\u8be2\u5e26 ORDER BY<\/code> \u5927\u7ed3\u679c\u96c6\u6392\u5e8f\uff1a<\/p>\n\n\n\n\n\n\n\n
\u573a\u666f<\/th>\n\u8fde\u63a5\u6570<\/th>\nsort_buffer_size<\/th>\n\u5cf0\u503c\u5185\u5b58<\/th>\nOOM \u4fdd\u62a4<\/th>\n<\/tr>\n<\/thead>\n
A<\/td>\n100<\/td>\n256KB\uff08\u9ed8\u8ba4\uff09<\/td>\n4.9GB<\/td>\n\u5426<\/td>\n<\/tr>\n
B<\/td>\n400<\/td>\n256KB\uff08\u9ed8\u8ba4\uff09<\/td>\n5.6GB<\/td>\n\u5426<\/td>\n<\/tr>\n
C<\/td>\n400<\/td>\n4MB<\/td>\n7.8GB<\/td>\n\u9669\u4e9b\u89e6\u53d1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u573a\u666f C \u7684\u6570\u636e\u5f88\u76f4\u89c2\uff1a\u540c\u6837\u7684 400 \u4e2a\u8fde\u63a5\uff0c\u4ec5\u628a sort_buffer_size<\/code> \u4ece 256KB \u653e\u5927\u5230 4MB\uff0c\u5cf0\u503c\u5185\u5b58\u5c31\u4ece 5.6GB \u6da8\u5230 7.8GB\u2014\u2014\u6392\u5e8f\u7c7b\u67e5\u8be2\u5360\u6bd4\u4e00\u6210\u65f6\uff0c\u6d41\u91cf\u9ad8\u5cf0\u8db3\u4ee5\u8ba9 8GB \u7684\u673a\u5668\u5931\u53bb\u5b89\u5168\u8fb9\u9645\u3002<\/p>\n
\u5173\u4e8e max_connections<\/code> \u8be5\u8bbe\u591a\u5c11\uff0c\u4e0e\u5176\u62cd\u8111\u888b\uff0c\u4e0d\u5982\u6309\u5185\u5b58\u5012\u63a8\uff1a\u6bcf\u8fde\u63a5\u5185\u5b58\u4e0a\u9650\u7ea6\u7b49\u4e8e sort_buffer_size<\/code>\u3001join_buffer_size<\/code>\u3001read_buffer_size<\/code>\u3001binlog_cache_size<\/code> \u4e4b\u548c\uff1b\u603b\u9884\u7b97\u7ea6\u4e3a”\u7269\u7406\u5185\u5b58\u51cf\u53bb Buffer Pool \u548c\u7cfb\u7edf\u9884\u7559”\u7684 80%\uff1bmax_connections<\/code> \u4e0d\u5e94\u8d85\u8fc7\u603b\u9884\u7b97\u9664\u4ee5\u6bcf\u8fde\u63a5\u4e0a\u9650\u3002<\/p>\n
\u4ee5\u672c\u6587\u6d4b\u8bd5\u673a\u4e3a\u4f8b\uff1a8GB \u51cf\u53bb 4GB Buffer Pool\uff0c\u518d\u7559 2.5GB \u7ed9\u7cfb\u7edf\u548c\u5176\u5b83\u670d\u52a1\uff0c\u5269\u4f59\u6309 80% \u7b97\u7ea6 1.2GB \u9884\u7b97\u3002\u6bcf\u8fde\u63a5\u4e0a\u9650 1MB \u65f6\uff0cmax_connections<\/code> \u8bbe 1000 \u4ee5\u5185\u90fd\u5b89\u5168\uff1b\u914d\u5230 8MB \u65f6\u5b89\u5168\u503c\u5c31\u53ea\u5269 150 \u5de6\u53f3\u3002<\/p>\n
\u8fd9\u91cc\u8981\u7279\u522b\u63d0\u9192\u4f7f\u7528\u5171\u4eab\u4e3b\u673a<\/a>\u7684\u8bfb\u8005\uff1a\u865a\u62df\u4e3b\u673a<\/a>\u73af\u5883\u4e0b\u7684\u6570\u636e\u5e93\u53c2\u6570\u7531\u670d\u52a1\u5546\u7edf\u4e00\u7ba1\u63a7\uff0c\u5355\u4e2a\u7528\u6237\u65e0\u9700\u4e5f\u65e0\u6cd5\u81ea\u884c\u8c03\u6574\uff1b\u800c\u4f7f\u7528 VPS<\/a>\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff0c\u7531\u7269\u7406\u673a\u865a\u62df\u5316\u5207\u5206\u51fa\u7684\u72ec\u7acb\u5c0f\u670d\u52a1\u5668\uff0c\u8be6\u89c1 Hostease VPS \u65b9\u6848<\/a>\uff09\u6216\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u7684\u7528\u6237\u62e5\u6709\u5b8c\u6574\u63a7\u5236\u6743\uff0c\u9700\u8981\u81ea\u5df1\u5b8c\u6210\u8fd9\u5957\u8ba1\u7b97\u548c\u9a8c\u8bc1\u3002\u53e6\u5916\uff0c\u8fde\u63a5\u6570\u957f\u671f\u6253\u6ee1\u5f80\u5f80\u4e0d\u662f max_connections<\/code> \u592a\u5c0f\uff0c\u800c\u662f\u5e94\u7528\u6ca1\u6709\u7528\u8fde\u63a5\u6c60\u3001\u6bcf\u6b21\u8bf7\u6c42\u90fd\u65b0\u5efa\u8fde\u63a5\u2014\u2014\u8fd9\u79cd\u60c5\u51b5\u5148\u4fee\u5e94\u7528\u5c42\uff0c\u6bd4\u4e00\u5473\u8c03\u5927\u53c2\u6570\u6709\u6548\u3002\u786e\u9700\u9650\u5236\u8fde\u63a5\u65f6\uff0c\u53ef\u4ee5\u914d\u5408 max_user_connections<\/code> \u7ed9\u5355\u4e2a\u7528\u6237\u8bbe\u72ec\u7acb\u4e0a\u9650\uff0c\u907f\u514d\u4e00\u4e2a\u5931\u63a7\u5e94\u7528\u5360\u6ee1\u8fde\u63a5\u6c60\u3002<\/p>\n
\u4e00\u5957\u53ef\u590d\u7528\u7684\u6392\u67e5\u6d41\u7a0b<\/h2>\n
\u4e00\u5957\u53ef\u590d\u7528\u7684\u6392\u67e5\u6d41\u7a0b\uff0c\u9047\u5230”MySQL \u5360\u7528\u5185\u5b58\u8fc7\u9ad8”\u65f6\u6309\u4e0b\u9762\u7684\u987a\u5e8f\u5904\u7406\uff1a<\/p>\n
    \n
  1. \u786e\u8ba4\u5185\u5b58\u5206\u5e03<\/strong>\uff1a\u7528 innodb_buffer_pool_size<\/code> \u914d\u7f6e\u503c\u548c free -h<\/code> \u8f93\u51fa\u5bf9\u6bd4\uff0c\u5224\u65ad\u5927\u5934\u662f Buffer Pool \u8fd8\u662f\u8fde\u63a5\u5185\u5b58<\/li>\n
  2. \u8bc4\u4f30\u547d\u4e2d\u7387<\/strong>\uff1a\u67e5 Innodb_buffer_pool_read_requests<\/code> \u4e0e Innodb_buffer_pool_reads<\/code> \u7684\u6bd4\u503c\uff0c\u4f4e\u4e8e 95% \u8bf4\u660e Buffer Pool \u504f\u5c0f\uff0c\u9ad8\u4e8e 99.5% \u65f6\u518d\u52a0\u5927\u610f\u4e49\u6709\u9650<\/li>\n
  3. \u6838\u5bf9\u8fde\u63a5\u914d\u7f6e<\/strong>\uff1a\u68c0\u67e5 max_connections<\/code> \u4e0e\u6bcf\u8fde\u63a5\u7f13\u51b2\u533a\u53c2\u6570\u7684\u4e58\u79ef\uff0c\u786e\u8ba4\u6700\u574f\u60c5\u51b5\u4e0d\u4f1a\u7a81\u7834\u7269\u7406\u5185\u5b58<\/li>\n
  4. \u4e00\u6b21\u53ea\u6539\u4e00\u4e2a\u53c2\u6570<\/strong>\uff1a\u4fee\u6539\u540e\u5728\u4f4e\u5cf0\u671f\u89c2\u5bdf 24 \u5c0f\u65f6\uff0c\u5bf9\u6bd4\u524d\u540e\u5dee\u5f02\u518d\u51b3\u5b9a\u4e0b\u4e00\u6b65<\/li>\n<\/ol>\n
    \u8fd9\u5957\u6d41\u7a0b\u7684\u6838\u5fc3\u601d\u8def\u662f”\u7528\u6570\u636e\u5b9a\u4f4d\u95ee\u9898\uff0c\u800c\u4e0d\u662f\u51ed\u611f\u89c9\u6539\u914d\u7f6e”\u3002\u53c2\u6570\u4e4b\u95f4\u5b58\u5728\u8054\u52a8\uff0c\u4e00\u6b21\u6539\u591a\u4e2a\u4f1a\u8ba9\u4f60\u65e0\u6cd5\u5224\u65ad\u6536\u76ca\u6765\u81ea\u54ea\u4e00\u9879\u3002<\/p>\n
    \"MySQL<\/p>\n
    \u603b\u7ed3<\/h2>\n
    \u56de\u5230\u5f00\u5934\u7684\u573a\u666f\uff1amysqld \u5360\u7528 70% \u5185\u5b58\u672c\u8eab\u4e0d\u4e00\u5b9a\u662f\u95ee\u9898\uff0c\u5173\u952e\u662f\u8fd9\u90e8\u5206\u5185\u5b58\u6709\u6ca1\u6709\u6362\u6765\u5bf9\u5e94\u7684\u7f13\u5b58\u547d\u4e2d\u7387\u3002\u6838\u5fc3\u7ed3\u8bba\u662f\uff1aBuffer Pool \u6309”\u70ed\u70b9\u6570\u636e\u96c6”\u5b9a\u5927\u5c0f\uff0c\u6539\u5b8c\u540e\u7528\u547d\u4e2d\u7387\u9a8c\u8bc1\u6536\u76ca\uff0c\u5230 99% \u4ee5\u4e0a\u5c31\u9002\u53ef\u800c\u6b62\uff1b\u6bcf\u8fde\u63a5\u7f13\u51b2\u533a\u4fdd\u6301\u9ed8\u8ba4\u503c\u6216\u66f4\u5c0f\uff0c\u5148\u7b97\u6e05\u6700\u574f\u60c5\u51b5\u518d\u51b3\u5b9a\u8981\u4e0d\u8981\u653e\u5927\uff1b\u4e00\u6b21\u53ea\u52a8\u4e00\u4e2a\u53c2\u6570\uff0c\u89c2\u5bdf\u4e00\u4e2a\u5b8c\u6574\u4e1a\u52a1\u5468\u671f\u540e\u518d\u8bc4\u4f30\u3002<\/p>\n
    \u5185\u5b58\u8c03\u4f18\u6ca1\u6709\u4e00\u52b3\u6c38\u9038\u7684\u6570\u503c\uff0c\u53ea\u6709\u7b26\u5408\u4f60\u81ea\u5df1\u6570\u636e\u91cf\u548c\u6d41\u91cf\u7279\u5f81\u7684\u914d\u7f6e\u3002\u5efa\u8bae\u628a\u672c\u6587\u7684\u6392\u67e5\u6d41\u7a0b\u4fdd\u5b58\u4e0b\u6765\uff0c\u6bcf\u6b21\u5185\u5b58\u544a\u8b66\u65f6\u6309\u6b65\u9aa4\u8d70\u4e00\u904d\uff0c\u591a\u6570\u60c5\u51b5\u5341\u5206\u949f\u5185\u5c31\u80fd\u5b9a\u4f4d\u5230\u5177\u4f53\u53c2\u6570\u3002\u5982\u679c\u4f60\u5728\u6258\u7ba1\u73af\u5883\u90e8\u7f72\u6570\u636e\u5e93\u3001\u5e0c\u671b\u6709\u66f4\u7701\u5fc3\u7684\u8d44\u6e90\u9694\u79bb\uff0cHostease \u7684\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u63d0\u4f9b\u72ec\u5360\u5185\u5b58\u548c root \u6743\u9650\uff0c\u53ef\u4ee5\u8003\u8651\u914d\u5408\u6587\u4e2d\u7684\u65b9\u6cd5\u628a Buffer Pool \u914d\u5230\u4f4d\uff1b\u60f3\u8fdb\u4e00\u6b65\u4e86\u89e3\u94fe\u8def\u63d0\u901f\uff0c\u4e5f\u53ef\u4ee5\u8bfb\u4e00\u8bfb\u6211\u4eec\u7684\u7f51\u7ad9 TTFB \u4f18\u5316\u6307\u5357<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    MySQL \u5360\u7528\u5185\u5b58\u8fc7\u9ad8\u600e\u4e48\u529e\uff1f\u672c\u6587\u901a\u8fc7\u5b9e\u6d4b\u6570\u636e\u8bb2\u6e05 innodb_buffer_pool_size \u4e0e\u8fde\u63a5\u6570\u76f8\u5173\u53c2\u6570\u7684\u8c03\u4f18\u65b9\u6cd5\uff0c\u5e2e\u52a9\u4f60\u89e3\u51b3\u6570\u636e\u5e93\u5185\u5b58\u544a\u8b66\u95ee\u9898\u3002<\/p>\n","protected":false},"author":2,"featured_media":33956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[5363,4904,545,4433,4875],"class_list":["post-33959","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-innodbbufferpoolsize","tag-maxconnections","tag-mysql","tag-mysql-","tag-4875"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/mysql-memory-tuning-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=33959"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33959\/revisions"}],"predecessor-version":[{"id":34357,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33959\/revisions\/34357"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/33956"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=33959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=33959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=33959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}