Shulou(Shulou.com)05/31 Report--

Use jemalloc or tcmalloc to optimize the installation steps of MYSQL, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

The default memory allocation is c's malloc, and now there are many optimized memory allocation algorithms:

Jemalloc and tcmalloc

In-declaration storage methods are supported since MySQL 5.5.

Install jemalloc

Wget http://www.canonware.com/download/jemalloc/jemalloc-3.4.0.tar.bz2tar xjf jemalloc-3.4.0.tar.bz2cd jemalloc-3.4.0./configure-- prefix=/usr/local/jemalloc-- libdir=/usr/local/lib make & & make installecho'/ usr/local/lib' > / etc/ld.so.conf.d/local.confldconfig

[root@host-192-168-1-56 mysql] # cp / usr/local/lib/libjemalloc.so / usr/lib64/mysql/libjemalloc.so

Mysql uses jemalloc

Modify the configuration file

[mysqld_safe]

Malloc-lib=/usr/lib64/mysql/libjemalloc.so # specify libjemalloc.so

Restart mysql to check whether it is effective

[root@host-192-168-1-56 mysql] # lsof-n | grep jemalloc

Mysqld 6032 mysql mem REG 252,1 4781206 320288 / usr/lib64/mysql/libjemalloc.so

Today, my colleagues and I tested jemalloc before and after using sysbench, and the overall improvement was more than 20%.

After reading the above, have you mastered the installation steps of optimizing MYSQL using jemalloc or tcmalloc? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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