[nSLUG] performance and schedulers

bdavidso at supercity.ns.ca bdavidso at supercity.ns.ca
Fri Sep 2 16:55:58 ADT 2005


On Thu, 23 Jun 2005, Donald Teed wrote:

[re: changing schedulers on the fly]

> Maybe some day you'll be able to cat vmlinux > /sys/kernelimage
> to switch kernels on the fly!

>From the 2.6.13 kernel config help file:

config KEXEC
         bool "kexec system call (EXPERIMENTAL)"
         depends on EXPERIMENTAL
           kexec is a system call that implements the ability to shutdown your
           current kernel, and to start another kernel.  It is like a reboot
           but it is indepedent of the system firmware.   And like a reboot
           you can start any kernel with it, not just Linux.

           The name comes from the similiarity to the exec system call.

So yeah, it looks like you could soon (or maybe now) be able to do 
something like that!

Bill Davidson
bdavidso at supercity.ns.ca


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