MySQL中innodb_log_file_size怎样设置
发布时间：2022-01-11 13:59:47 所属栏目：MySql教程 来源：互联网
导读：这篇文章主要介绍了MySQL中innodb_log_file_size如何设置，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。 innodb_log_file_size的大小设置将会影响MySQL数据库的写入性能，若设置的太
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这篇文章主要介绍了MySQL中innodb_log_file_size如何设置，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。 innodb_log_file_size的大小设置将会影响MySQL数据库的写入性能，若设置的太小， 会增加checkpoint写的次数，以下测试在MySQL5.7版本中的如何修改innodb_log_file_size [root@endb local]# mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.9-log MySQL Community Server (GPL) Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> show variables like '%innodb_log_file%'; +---------------------------+------------+ | Variable_name | Value | +---------------------------+------------+ | innodb_log_file_size | 1073741824 | | innodb_log_files_in_group | 2 | +---------------------------+------------+ 2 rows in set (0.00 sec) mysql> select 1073741824/1024/1024; +----------------------+ | 1073741824/1024/1024 | +----------------------+ | 1024.00000000 | +----------------------+ 1 row in set (0.00 sec) 这里确认innodb_fast_shutdown为1，这样在重启MySQL时，不会使用ib_logfile文件 mysql> show variables like '%shutdown%'; +-------------------------------------+-------+ | Variable_name | Value | +-------------------------------------+-------+ | innodb_buffer_pool_dump_at_shutdown | ON | | innodb_fast_shutdown | 1 | +-------------------------------------+-------+ 2 rows in set (0.00 sec) mysql> show variables like '%datadir%'; +---------------+--------------+ | Variable_name | Value | +---------------+--------------+ | datadir | /home/mysql/ | +---------------+--------------+ 1 row in set (0.00 sec) [root@endb local]# /etc/init.d/mysql stop Shutting down MySQL...[ OK ] [root@endb local]# grep innodb_log /etc/my.cnf innodb_log_file_size = 512M [root@endb mysql]# cp ib_logfile* .. [root@endb mysql]# ll ib_logfile* -rw-r----- 1 mysql mysql 1073741824 Mar 3 15:03 ib_logfile0 -rw-r----- 1 mysql mysql 1073741824 Nov 25 16:09 ib_logfile1 [root@endb mysql]# ll -h ib_logfile* -rw-r----- 1 mysql mysql 1.0G Mar 3 15:03 ib_logfile0 -rw-r----- 1 mysql mysql 1.0G Nov 25 16:09 ib_logfile1 mysql> show variables like '%innodb_log%'; +-----------------------------+-----------+ | Variable_name | Value | +-----------------------------+-----------+ | innodb_log_buffer_size | 16777216 | | innodb_log_checksums | ON | | innodb_log_compressed_pages | ON | | innodb_log_file_size | 536870912 | | innodb_log_files_in_group | 2 | | innodb_log_group_home_dir | ./ | | innodb_log_write_ahead_size | 8192 | +-----------------------------+-----------+ 7 rows in set (0.00 sec) [root@endb mysql]# ll -h ib_logfile* -rw-r----- 1 mysql mysql 512M Mar 3 15:05 ib_logfile0 -rw-r----- 1 mysql mysql 512M Mar 3 15:05 ib_logfile1 感谢你能够认真阅读完这篇文章，希望小编分享的“MySQL中innodb_log_file_size如何设置”这篇文章对大家有帮助 （编辑：丽水站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
