Dear Brendan, I think the answer of Jeff to the question "Are there any drawbacks of UML?" in the following post is quite illustrative (although I suggest you to read all the interview):
http://linuxhelp.blogspot.com/2006/06/interview-with-jeff-dike-creator-of.html Although UML is not currently the most efficient virtual machine solution, I think that one of its mayor advantages is flexibility (and we have taken very advantage of this in tools such as VNUML, http://www.dit.upm.es/vnuml :) Best regards, ------ Fermín Brendan McNally wrote: > Jeff > > Would you agree that UML is faster than hypervisor solutions? > > Thanks > Brendan > > Will Morton wrote: >> Hi Brendan; >> >> A hypervisor is a program that emulates a computer's hardware, >> allowing an unmodified 'guest' OS to run within it. UML in contrast >> is a modification of the guest OS kernel to allow it to run as a >> user-space process. >> >> KVM (http://kvm.qumranet.com/kvmwiki) is a Free linux-based >> hypervisor, and can run linux or windows (and I presume any other x86 >> OS), whereas UML can only run, well, linux. The price of this >> flexibility is speed; UML is much faster than any other virtualisation >> solution I've tried. >> >> HTH etc >> >> W >> >> >> On 14/04/2008, Brendan McNally <[EMAIL PROTECTED]> wrote: >> >>> Hi All >>> >>> Just wondering would UML be considered Hypervisor? If not what exactly is a >>> Hypervisor then? >>> >>> Thanks >>> Brendan >>> >>> ------------------------------------------------------------------------- >>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >>> Don't miss this year's exciting event. There's still time to save $100. >>> Use priority code J8TL2D2. >>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >>> _______________________________________________ >>> User-mode-linux-user mailing list >>> User-mode-linux-user@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user >>> >>> >>> >> >> > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > > > ------------------------------------------------------------------------ > > _______________________________________________ > User-mode-linux-user mailing list > User-mode-linux-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
