05-17-2007
Built in ram limit for 64 bit
Hey all,
I have been thinking about getting a new computer, and the motherboard I am looking at is capable of holding up to 8 Gb of ram. Now it appears as though for 32 bit linux, in order to use more than 4 Gb of ram, you had to enable a certain option in the kernel, but if I remember correctly, there was also a performance hit for doing so. Of course I will be going 64 bit, and so I am wondering if there will be any problems with > 4 Gb of ram? Or will Linux take care of everything in 64 bit mode?
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LEARN ABOUT CENTOS
new-kernel-pkg
NEW-KERNEL-PKG(8) System Manager's Manual NEW-KERNEL-PKG(8)
NAME
new-kernel-pkg - tool to script kernel installation
SYNOPSIS
new-kernel-pkg [-v] [--mkinitrd] [--rminitrd] [--dracut]
[--initrdfile=initrd-image [--depmod] [--rmmoddep]
[--kernel-args=args] [--remove-args=args]
[--banner=banner] [--multiboot=multiboot]
[--mbargs=mbargs] [--make-default] [--add-dracut-args]
[--add-plymouth-initrd] [--host-only]
<--install | --remove | --update | --rpmposttrans> <kernel-version>
DESCRIPTION
new-kernel-pkg is a tool used in packaging to automate the installation of a new kernel, including the creation of an initial ram filesys-
tem image, updating of bootloader configuration, and other associated tasks.
OPTIONS
-v Be verbose.
--mkinitrd
Create a new initial ram filesystem image.
--rminitrd
Remove an initial ram filesystem image.
--dracut
When creating a new initial ram filesystem image, use dracut(8) rather than mkinitrd(8). Used in conjunction with --mkinitrd .
--initrdfile=initrd-image
Use the specified file as the initial ram filesystem image.
--depmod
Create modules.dep and related files.
--rmmoddep
Remove modules.dep and related files.
--kernel-args=args
Use args as the boot command line for this kernel.
--remove-args=args
Remove specified kernel arguments for this kernel.
--banner=banner
Display banner as the banner text in the bootloader.
--multiboot=multiboot-image
Use multiboot-image as a multiboot image.
--mbargs=mbargs
Use mbargs as arguments to the multiboot image.
--make-default
Make this kernel the default boot option.
--add-dracut-args
Automatically generate dracut options and add them to the kernel command line.
--add-plymouth-initrd
Automatically add plymouth to the initial ram filesystem image.
--host-only
Make an initial ram filesystem image that is specific to the running system.
--install kernel-version
Install a new kernel.
--remove kernel-version
Remove an installed kernel.
--update kernel-version
Update the specified kernel.
--rpmposttrans kernel-version
Run the rpmposttrans for the specified kernel.
SEE ALSO
grubby(8) installkernel(8)
AUTHORS
Erik Troan
Jeremy Katz
Peter Jones
Wed Apr 14 2010 NEW-KERNEL-PKG(8)