MySQL中innodb_log_file_size如何设置-创新互联
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。
成都创新互联长期为上千余家客户提供的网站建设服务,团队从业经验10年,关注不同地域、不同群体,并针对不同对象提供差异化的产品和服务;打造开放共赢平台,与合作伙伴共同营造健康的互联网生态环境。为承德企业提供专业的成都网站制作、成都网站设计、外贸营销网站建设,承德网站改版等技术服务。拥有十年丰富建站经验和众多成功案例,为您定制开发。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,同时也希望大家多多支持创新互联,关注创新互联-成都网站建设公司行业资讯频道,更多相关知识等着你来学习!
标题名称:MySQL中innodb_log_file_size如何设置-创新互联
网页地址:http://azwzsj.com/article/cechhd.html