Re: Linux as a NAS performance questions

2009-09-27 Thread Drew Van Zandt
FYI, a friend of mine who's Our Sort (IT professional) has a Drobo at home, and had a few things to say about it: 1) It rocks, especially lately when he's been experiencing regular brownouts. 2) It's Linux underneath the shiny custom box, and not difficult to get ssh, Perl, and userland NFS running

Re: Enabling Virtual Machine support

2009-09-27 Thread Ben Scott
On Sun, Sep 27, 2009 at 7:59 PM, Thomas Charron wrote: >  Intel's VT-x extensions *MUST* be enabled and supported by BIOS. > I'm not sure why ... I seem to recall this facet of the design being sold as a security feature. The scenario given was the entire nominal installed OS running inside a

Re: Enabling Virtual Machine support

2009-09-27 Thread Thomas Charron
On Sun, Sep 27, 2009 at 7:59 PM, Thomas Charron wrote: > On Sun, Sep 27, 2009 at 7:36 PM, Michael ODonnell > wrote: >> Not certain I understand what you're saying but processors in this family >> come out of their power-on Reset state in their simplest, least capable >> mode - interrupts disabled

Re: Enabling Virtual Machine support

2009-09-27 Thread Thomas Charron
On Sun, Sep 27, 2009 at 7:36 PM, Michael ODonnell wrote: > Not certain I understand what you're saying but processors in this family > come out of their power-on Reset state in their simplest, least capable > mode - interrupts disabled, MMU disabled, 20bit Real Mode addressing, > etc - and each in

Re: Enabling Virtual Machine support

2009-09-27 Thread Michael ODonnell
>> So if VM support is enabled by flipping some bit(s) in some CPU >> Control Register(s) I'd assume that a VM-capable OS could flip those >> bits as well as any BIOS code. I suppose it's possible that the CPU >> might first insist on seeing a certain logic level on a certain input >> pin befor

Re: Enabling Virtual Machine support

2009-09-27 Thread Lloyd Kvam
On Sun, 2009-09-27 at 12:43 -0400, Michael ODonnell wrote: > So if VM support is enabled by flipping some bit(s) in some CPU > Control Register(s) I'd assume that a VM-capable OS could flip those > bits as well as any BIOS code. I suppose it's possible that the CPU > might first insist on seeing a

Enabling Virtual Machine support

2009-09-27 Thread Michael ODonnell
I have fairly deep OS-level experience (including some Virtual Machine work) but I confess that I'm not up on the very latest VM technology so to further the discussion let me ask something that may also have occurred to others: What is it in the nature of VM support in these processors (or

Re: cpu processing capabilities

2009-09-27 Thread Alex Hewitt
Lloyd Kvam wrote: > http://ark.intel.com/Product.aspx?id=42014 > claims that the P7550 supports virtualization which I expect to show up > as vmx in the cpuflags. > > I bought a new HP laptop which featured a P7550 processor and expected > to be able to use KVM. Unfortunately, the vmx flag is not