Centos 6

在/etc/grub.conf    在kernel 添加numa=off 就行了

一、检查OS是否开启NUMA

# numactl --hardware

available: 1 nodes (0)       #如果是2或多个nodes就说明numa没关掉

 

二、Linux OS层面禁用NUMA

1、修改 grub.conf

# vi /boot/grub/grub.conf#/* Copyright 2010, Oracle. All rights reserved. */ default=0timeout=5hiddenmenuforeground=000000background=ffffffsplashimage=(hd0,0)/boot/grub/oracle.xpm.gz title Trying_C0D0_as_HD0root (hd0,0)kernel /boot/vmlinuz-2.6.18-128.1.16.0.1.el5 root=LABEL=DBSYS ro bootarea=dbsys rhgb quiet console=ttyS0,115200n8 console=tty1 crashkernel=128M@16M numa=offinitrd /boot/initrd-2.6.18-128.1.16.0.1.el5.img

 

2、重启Linux操作系统

# /sbin/reboot

 

 

3、确认OS层面禁用NUMA是否成功

# cat /proc/cmdlineroot=LABEL=DBSYS ro bootarea=dbsys rhgb quiet console=ttyS0,115200n8 console=tty1 crashkernel=128M@16M numa=off# numactl --hardware

 

 

Centos 7 mysql5.7关闭NUMA方法

登录Linux系统,修改/etc/init.d/mysqld文件，加上numactl --interleave all

vi /etc/init.d/mysqld

找到如下行

# Give extra arguments to mysqld with the my.cnf file. This script   # may be overwritten at next upgrade.   $bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null &   wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?

将$bindir/mysqld_safe --datadir="$datadir"这一行修改为：

/usr/bin/numactl --interleave all $bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null &wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?

然后重启MySQL服务

 

转自：

NUMA特性禁用 - zfox - 博客园 https://www.cnblogs.com/zfox2017/p/6491556.html

mysql5.7关闭NUMA方法 - formydream的博客 - CSDN博客 https://blog.csdn.net/jh993627471/article/details/79177884

针对跑MySQL的Linux优化经验-MySQL Life http://wubx.net/linux-performance-tuning-tips-mysql/