一、检查OS是否开启NUMA
# numactl --hardware
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=0
timeout=5
hiddenmenu
foreground=000000
background=ffffff
splashimage=(hd0,0)/boot/grub/oracle.xpm.gz
title Trying_C0D0_as_HD0
root (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=off
initrd /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/cmdline
root=LABEL=DBSYS ro bootarea=dbsys rhgb quiet console=ttyS0,115200n8 console=tty1 crashkernel=128M@16M numa=off
# numactl --hardware
三、SuSE Linux禁用NUMA示例
对于suse系统来说，只要不重新编译内核，系统默认是启用numa功能的（可以通过/boot/config-`uname -r`查看）。
尝试在/boot/grub/menu.lst文件中kernel一行的选项中添加 numa=off 参数禁止numa功能，重启系统生效。
# more /boot/grub/menu.lst
# Modified by YaST2. Last modification on Mon Dec 23 23:19:15 CST 2013
default 0
timeout 8
##YaST - generic_mbr
gfxmenu (hd0,7)/message
##YaST - activate
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux Enterprise Server 11 SP1 - 2.6.32.59-0.7
root (hd0,7)
kernel /vmlinuz-2.6.32.59-0.7-default root=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part2 resume=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part1 splash=silent crashkernel=256M-:128M showopts vga=0x31a elevator=deadline numa=off
initrd /initrd-2.6.32.59-0.7-default
###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- SUSE Linux Enterprise Server 11 SP1 - 2.6.32.59-0.7
root (hd0,7)
kernel /vmlinuz-2.6.32.59-0.7-default root=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part2 showopts ide=nodma apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe vga=0x31a
initrd /initrd-2.6.32.59-0.7-default
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux Enterprise Server 11 SP1 - 2.6.32.12-0.7
root (hd0,7)
kernel /vmlinuz-2.6.32.12-0.7-default root=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part2 resume=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part1 splash=silent crashkernel=256M-:128M showopts vga=0x31a
initrd /initrd-2.6.32.12-0.7-default
###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- SUSE Linux Enterprise Server 11 SP1 - 2.6.32.12-0.7
root (hd0,7)
kernel /vmlinuz-2.6.32.12-0.7-default root=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part2 showopts ide=nodma apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe vga=0x31a
initrd /initrd-2.6.32.12-0.7-default
# numactl --hardware
available: 1 nodes (0)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
node 0 size: 65519 MB
node 0 free: 61097 MB
No distance information available.
BMSuiteDB1:~ # cat /proc/cmdline
root=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part2 resume=/dev/disk/by-id/scsi-3600605b005a36fc0190ea623797d7bba-part1 splash=silent crashkernel=256M-:128M vga=0x31a elevator=deadline numa=off