Linux升级内核

内核升级：【内核版本 https://www.kernel.org/】 参考：http://blog.csdn.net/taiyang1987912/article/details/42744019

yum install ncurses-devel -y
yum install hmaccalc zlib-devel binutils-devel elfutils-libelf-devel -y
wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.10.28.tar.xz
tar -xf linux-3.10.28.tar.xz
mv linux-3.10.28 /usr/src/
cd /usr/src/linux-3.10.28/
cp /boot/config-2.6.32-573.el6.x86_64 .config
sh -c 'yes "" | make oldconfig'
make oldconfig

cpu核数 cat /proc/cpuinfo| grep "processor"| wc -l 下面-j后面的48是cpu核数（指定编译核数）

make -j48 bzImage
make -j48 modules
make -j48 modules_install
make install

vi /etc/grub.conf
【看新安装的内核在第几段，一般是在第一段，从0开始数看title CentOS (3.10.28) 在第一段为default=0，第二段为default=1】
例如【
#boot=/dev/sdb
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (3.10.28)
root (hd0,0)
kernel /vmlinuz-3.10.28 ro root=UUID=28fbaad8-35a6-4348-b1e0-bf204537f8b0 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us
rd_NO_DM rhgb quiet
initrd /initramfs-3.10.28.img
title CentOS (2.6.32-642.3.1.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-642.3.1.el6.x86_64 ro root=UUID=28fbaad8-35a6-4348-b1e0-bf204537f8b0 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc
KEYTABLE=us rd_NO_DM rhgb quiet
initrd /initramfs-2.6.32-642.3.1.el6.x86_64.img
title CentOS 6 (2.6.32-573.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-573.el6.x86_64 ro root=UUID=28fbaad8-35a6-4348-b1e0-bf204537f8b0 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc
KEYTABLE=us rd_NO_DM rhgb quiet
initrd /initramfs-2.6.32-573.el6.x86_64.img
】
reboot
uname -r 查看内核版本

个人学习笔记，不当之处还请指正。

----------不定期更新------------