Because it may be really *expensive*. Fundamentally, if ever a system is taken out of service, whatever redundancy mechanisms may be in place may happen to fail then. Thus it is wise to reduce the time for which a machine is out of service. ksplice can, for a large proportion of smaller patches, reduce this period to a fraction of a second, with no loss of non-persistent state. And that seems worthwhile to me.
Copyright © 2017, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds