Category: General

VMWare CentOS 6 ksoftirqd using all CPU

  • Update /etc/grub.conf as follows (note the adding of the nohz=off) the file may be different to that of below so be careful.
  • Reboot server.
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.32-279.14.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-279.14.1.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet nohz=off rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-2.6.32-279.14.1.el6.x86_64.img
title CentOS (3.5.4-1.el6.elrepo.x86_64)
        root (hd0,0)
        kernel /vmlinuz-3.5.4-1.el6.elrepo.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-3.5.4-1.el6.elrepo.x86_64.img
title CentOS (2.6.32-279.9.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-279.9.1.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-2.6.32-279.9.1.el6.x86_64.img
title CentOS (2.6.32-279.5.2.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-279.5.2.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-2.6.32-279.5.2.el6.x86_64.img
title CentOS (2.6.32-279.5.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-279.5.1.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-2.6.32-279.5.1.el6.x86_64.img
title CentOS (2.6.32-220.17.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-220.17.1.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=auto quiet rd_LVM_LV=VolGroup/lv_root rd_NO_DM
        initrd /initramfs-2.6.32-220.17.1.el6.x86_64.img

Linux

How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

No votes so far! Be the first to rate this post.