>>> On 8/18/2015 at 08:43 AM, Jon Butler <[email protected]> wrote: > It seems to me this is another abstraction layer that would enable an > instance of bare-metal Linux to spool up multiple instances in an LPAR > without z/VM.
That's the whole purpose of KVM, on any architecture. > What would the effect be of running KVM in a Linux instance under z/VM? Pretty bad performance, to start with. The z/Architecture only provides 2 "layers" of SIE (start interpretive execution). PR/SM takes up one, z/VM would then take up the second, leaving Linux without that huge boost. > And of course PR/SM is still dispatching logical IFLs onto real IFLs...or are > we eliminating PR/SM on the LinuxONE and perhaps going back to a version of > MFT? Not at all. > I will be interested to see the Nürburgring lap times comparing KVM with > z/VM. Things will probably not be too different between them at low levels of over commitment of resources. After that, z/VM will blow the doors off KVM. Mark Post ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
