NUMA的关闭方法【转】

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=
timeout=
hiddenmenu
foreground=
background=ffffff
splashimage=(hd0,)/boot/grub/oracle.xpm.gz

title Trying_C0D0_as_HD0
root (hd0,)
kernel /boot/vmlinuz-2.6.-128.1.16.0..el5 root=LABEL=DBSYS ro bootarea=dbsys rhgb quiet console=ttyS0,115200n8 console=tty1 crashkernel=128M@16M numa=off
initrd /boot/initrd-2.6.-128.1.16.0..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/cmdline
root=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/