“Have you ever wondered why some updates or installs require a reboot, and others don’t? The main reason relates to kernel-level core services running in memory which either have been altered by the update to include new data that can’t be “squeezed in” to its existing footprint, or are currently attached to multiple separate processes which cannot be accounted for without a reboot. Ksplice has figured out a way around that issue in a majority of the cases.A recent examination of Linux kernel updates suggests 88% of those which today fall under the “must reboot” category due to the types of programs they affect, could be converted into rebootless forms using Ksplice.”
