mysql优化 慢查询(一)
1.显示慢查询的一些参数的命令:show variables like '%slow%';结果如图
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jWKRrXiu8XxQoV91Ayx32pAE64AJ2ovdlq7/h27/h2b66xyyqybUXqx65omlZe3fv1Pzb0Qtul2RbmrJ6WZrv8hk2WjANAy4vntuO5nfjETm9ux+V7WcVHbTtNfcNTTKp+X37KK4aS012vVnAfKRapvnzRHPelAjjhAnSoxid24hO78YldN11WPl+365i7nW06l51MpXL13dBdr1ZwHykWqbh8B5EBQFGATpVal41P7C6Xv2+hvy+r271U8oqyaL1guuvVje8X9SJFr6MoQkssH0ALCdCpEs/t1hqtsy4bErciw0RlvnpqUZeqH7HNKyrGsjCtemzXqxvfX1pFqu+zyv4DgJYAHSl9uZ1ao23osgFhbl2ik7qpBWjVoxs2QBcEAMBD8fHteG7n6BeggtllbTXpzdAxvMfibRwAtLn4+HZ8fLsvtxPPtWqXBQAgoPqy1fj49tHneZYdfV4WAABY6xurHDXavolduiwAAF7qH93qG6v2jW/38S/GAAB4q2+s0p+t9o3z32UBAPBa/1i1f3y7L7fTN7G7vOXw87IiJ+13aI/z15JFDzWvHsU4Lj/gpB7fwVM83AfHoRqeqxJKUr953PFim33pWqYT3TdfRerzLccts4v2TZSr/kdRnaL4iuOikhTrFNWjxX0Ef+PXZ2lefA0D2erA+HZ/bqd/cs/zLuttnFbR7KtTlEKU9/hfR3mdlvObVElIfDo7S61VgOTlMF49qRVzNUwW7bPkSrAtWP0lVpkmmayyrvqni+ZLarbdH0lerTkNy5Tsv/pWSNbbME0URLQtitxHaO/4GhLZ7YHczsDEbv/k3vLWc7qse81br7PIx/86yk8icxzdCrXm2xajnlf3iZbTDCuKQRTXIoqplcv9NPl83ddFcR9sn6K4bw3z1VPrbr6oHnkiyxF5Il1exWnX+BoS4zuJib3E1JPE9P6K0y5r1BE9ajtf/qM8b0jt6pTkNT9XHsq2Kss6ReNa6xWNu9x/W852QLLbKkVaPsVy00TzVTZNNF9UvKge0VPkeeWp5fWr1CB5lsq65JtgO1++Dyprkc9XXKxoP23DNixKMl9ej+64fI7iqlXCqhdmOV/+o212lXpE+68b3zfJyaMW+yQxvb9Sec7fl1V8imJhzuqRhG2oUJJXtx4PebJvkjj1m6C+veYybAcVXy/5ekWTXdavVYPLJ0qeopJCNGjUEY2rb458i2r3bZdvmVflIXk98vHGHZTum+RZok0wZzfXLA8lmq+7HDfx1YMHS3LqSWJ6Pzm9n8gfNHRZx/slf9R2B80XgW1Y9fv1GkKZ8zp7gZt39Wjts7wey31wk100000K3a2T51UZcRbcdr0OnmtbrXmyJIWDNYZMl4qoEtv5kieqbJdtnaJolk/RndMwKNk6eZ0q921XJB+Xh1IPbvmobf2W26ue3f1eyeP7KTm9n8wfJPOHyZnDleoP/H1ZlRRyzbt65NMc7L8WZztgmV1xFZ7cty3GZQHyh8xzFJ9rW3/DBMVS5fU4WK/WJjgIpRVfZW9V5ojmS/ZZPaB8Lc62URTK8rkqodQLq98oec0u42sF153cXIP5g8GZw8HZw+Ts01VHXVbrspPPr3/BbFPrvioqeUVZ3Ly6tnnV48uniR5Vr8dNdsuZ5qeoLNby6Y7v2+6/y0QN65IszXKO5Y+KeY1XWcaUlKSey82+ifJKZprTiQp2UKfKuO6c+jrd7Kcor3mXbEfMExrI4ysWKam5/iHLSnTjS0JZ0prcXEctdnD26aDTLht6dRdE4+ZNFM1XTy3a/foR27wqr5+zemzXqxVfEkQlr1Y9jos0J1WP3xBEFMryR3lqla0TDYpSS6LJ12VZmzyO7X5KNkFekvHqPotCSUoSrU4rr2ixWtsljyN6imhEvnB5naK8KvVYBpEsTXHfLKnUqb4u816F7K4TxfjmRCq0JjdXrcWau2xAWF49ope5eQVo1aMbVnSpuYnfBnQX7u9GeZXd2apP7EWC9iY6J1vJ4OzTwdlnQe6ytpp0yhzD4cX5KKG7OX5tpld5uRgASy3/P43gv5cFAKBVJfMHyZmjRntIlwUAwEvJqSfJ6f3kzMHgDF0WAABPJXM7ycm95PR+ki4LAIC3EmOVRG4nObWXzB/QZQEA8FIiU0pkK8mJ3eT0/mr1hzPn6LIAAHhkIFVIjG4lcjt0WQAAPDaQ2kyMlhO57eT0k4Yu28KfT0ITcD0AaBUBOq8G0sL3sgGqEgHA9QCgVQTovBoYsfjvsoaJ5SDjJ2Gc64FxxhlvlXHReeUnye8YB6I+BAbXA4BWEaDzSvJ52QBViQDgegDQKgJ0XiWn9l78IXe+YREAAG8l8/vJ/EFi5iAxe7hS/aGDLgsAgFcS+f3EzMHAzMHAzMFK9XkHn5cFAMAr/fn9/vx+f/5JX/7JcuX56XMf+V0RAADtIj692zu92zu1E5vaWdr67qfv/M7vigAAaBeRyWpkohKeqPTkthbKz954+7d+VwQAQLvoGi91Zoud2eK1scKD0uHrb33gd0UAALSLrzLrX2Uef5V5/LfM4/uF/dd++b7fFQEA0C6+SK0e3T5Prc4W9v7jzd/4XREAAO3ikrF46d7SpaGlS0NLM5u7P37zvfpHA/T1GWItUeSRhlJ1v2xTNN+vL+1soZ0HAH98cufBBWP+ojF/0VjIb+ycOvtu7aGgfNWyHV+KdJDRsjWKflR/um4cb7XEFQIAvjl/+/75u/c/ufvggjGf39g5dfbXR+O+vDdqFQ62xfyU+hGVrRbN143jOS4SABD6+Pbc+duNXVb0PsmS6MQPCVq15Efd1i6J7z6OYnyVFJbTGjbNNpRovm4c3fWqRFbcBwA4cc7fuX/hzoOLxvyn9xbyG7unzr5bf2LqdhHL019y3/xcrbzygIpxVOqUpHBQYcOgefnyIIZVc3UQx+V92wUCAEIX7y58aixeMpY+u7d89NtPhhV5kPpp5jui+/Jp6hqe5SCg5TTJJujWaRtfJaZovm4clXp099DZCwcA7e+ze8uXh1Y+H179YnhtrvDkP3/xyid53HcpyX1RV3DZw3Q7hEoc+UwHwUN1XU0xpmi+g6ZoOVP0RMXCVDICwIlzJfXwSurhl+lHf0tbfCuF4gFqOU1y9Dd0CNv5Wtl146jUoFK/mzpFP6rMl0+Tl+HmvmI6ADjRvspsfJ3ZuJrZvDq6+aB4UP8Ni0YdSQTJNNFD8g6hfnAbJiH9Lmtbp3xpKnU2PEtUv2180XxJHEkZ6uuVj9umA4CTqzNb6sqWurPl7mx5ofT0jbc+9LsiAADaRThXDU9UwxPV6MT2Yvm7/+Iv3wEA4JXY1G5saq93ai8+tbe89f3pc7/3uyIAANpFX36/dluuPD997iO/KwIAoF0MzBzWbivVHzp+9Qe/KwIAoF0kZp/WbnRZAAC8lJh9VrutVP91hi4LAIBXknPParfV6r/O/Op//a4IAIA28f8e9w/um7t2hAAAAABJRU5ErkJggg==" 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2.上面四个参数的意思是:
log_slow_queries off 表示“慢查询”是“关闭的状态”
slow_launch_time 2 表示“查询时间超过2秒就记录到慢查询日志中”;
slow_queries_log off 表示慢查询日志开关是关着的
slow_query_log_file "路径" 表示慢查询日志存放完整路径
3.开启慢查询的功能
使用命令:set global log_slow_queries=on; 这样就开启了慢查询的功能,此参数打开了,slow_query_log就自动变成了on,关闭了的话也跟着关闭。
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" alt="" />
4. 其实slow_launch_time的设定跟慢查询日志的查询阀值设定不同,表示了thread create的一个阀值,
如果thread create的时间超过了这个值,这变量slow_launch_time的值加1.
set global log_launch_time=1 这里的时间值必须是整数,否则的话就话执行出错
慢查询的查询阀值是long_query_time 默认是10秒
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" alt="" />
5.设置slow_query_log_file的值是字符串必须用引号引起来。
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要真正修改慢查询得去修改mysql的文件,内容添加如下
long_query_time=0 只要是执行的都写入了慢查询日志
log_slow_queries=on 慢查询开关
slow_query_log =on 慢查询日志开关
slow_query_log_file="D:/phpStudy/1.log" 慢查询日志文件
并且还得重新启动mysql才会生效
慢查询的日志结构如下:
MySQLa, Version: 5.5.40-log (MySQL Community Server (GPL)). started with:
TCP Port: 3306, Named Pipe: (null)
Time Id Command Argument
# Time: 150705 18:31:54
# User@Host: root[root] @ localhost [127.0.0.1]
# Query_time: 0.012001 Lock_time: 0.001000 Rows_sent: 51 Rows_examined: 51
use weixin;
SET timestamp=1436092314;
show databases;
# Time: 150705 18:32:55
# User@Host: root[root] @ localhost [127.0.0.1]
# Query_time: 0.002000 Lock_time: 0.001000 Rows_sent: 1 Rows_examined: 1
SET timestamp=1436092375;
show variables like "%query_time%";
# Time: 150705 18:33:03
# User@Host: root[root] @ localhost [127.0.0.1]
# Query_time: 0.001000 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0
use chlitina;
SET timestamp=1436092383;
use `chlitina`;
# User@Host: root[root] @ localhost [127.0.0.1]
# Query_time: 0.031001 Lock_time: 0.001000 Rows_sent: 869 Rows_examined: 869
SET timestamp=1436092383;
select * from wp_consultant;
# Time: 150705 18:33:40
# User@Host: root[root] @ localhost [127.0.0.1]
# Query_time: 0.052003 Lock_time: 0.001000 Rows_sent: 869 Rows_examined: 1738
SET timestamp=1436092420;
select * from wp_consultant order by id desc;
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