If you have 4 GB or more RAM use the Linux kernel compiled for PAE capable machines. Your machine may not show up total 4GB ram with 32 bit architecture servers. All you have to do is install PAE kernel package.
This package includes a version of the Linux kernel with support for up to 64GB of high memory. It requires a CPU with Physical Address Extensions (PAE). The non-PAE kernel can only address up to 4GB of memory. Install the kernel-PAE package if your machine has more than 4GB of memory (>=4GB).
How Do I Install PAE kernel?
To install PAE kernel, use yum command:
# yum install kernel-PAE
# grub
grub> savedefault --default=0 --once
grub> quit
# reboot
If the kernel boots successfully edit /etc/grub.conf again to set the new kernel as the new default for the future reboots.
This package includes a version of the Linux kernel with support for up to 64GB of high memory. It requires a CPU with Physical Address Extensions (PAE). The non-PAE kernel can only address up to 4GB of memory. Install the kernel-PAE package if your machine has more than 4GB of memory (>=4GB).
How Do I Install PAE kernel?
To install PAE kernel, use yum command:
# yum install kernel-PAE
# grub
grub> savedefault --default=0 --once
grub> quit
# reboot
If the kernel boots successfully edit /etc/grub.conf again to set the new kernel as the new default for the future reboots.
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