Re: OT: QEMU Package faster

On Mon, 2007-07-02 at 00:59 -0400, Scott Gifford wrote:
Mike McCarty <Mike.McCarty@xxxxxxxxxxxxx> writes:

[...]

I noticed that on her machine, QEMU does not eat lots of CPU, while
on my machine, it eats the machine. I've copied the exact raw image
disc from her machine to mine, but QEMU eats my CPU.

Perhaps it's a difference in processor features. Newer CPUs from
Intel and AMD contain special virtualization instructions that make
running a VM much easier, and somewhat faster. Maybe she has such a
chip and you don't?

Nope.

To take advantage of this you need KVM, which is a fork of qemu.

What's more these hardware instructions are in their early incarnations
and in many cases, given the horsepower of the machines featuring these
instructions, using traditional software-based virtualization
(VirtualBox, VMware, or qemu+kqemu) is smoother and faster.

----Scott.




--
To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx
with a subject of "unsubscribe". Trouble? Contact listmaster@xxxxxxxxxxxxxxxx

Relevant Pages

  • Re: Thinking assembly?
    ... I simply needs to understand the CPU and how it works, ... > understand the instructions, be a good and experienced programmer, ... assembly language is the machine's language (or, at least, ...
    (alt.lang.asm)
  • Re: Loading Memory Addresses
    ... You're kidding about kidding!!! ... The CPU instructions seem to lack AMD instruction sets. ... CPU 186 Assemble instructions up to the 80186 instruction set ...
    (alt.lang.asm)
  • Re: Dual-Core CPU Question
    ... Chipset Vendor: Intel i845 Rev. A3 ... VT allows hardware virtualization of unmodified guest operating systems. ... So far vt has just been applied to cpu, ...
    (comp.sys.ibm.ps2.hardware)
  • Re: [RFC] remove bus_memio.h and bus_pio.h
    ... > benefit was swamped by the actual I/O. ... Pentium can do up to 532 instructions in a microsecond even if it is ... CPU cycles @ 4nsec each, plus a huge number of CPU cycles for the i/o ... i/o instructions are slightly faster than memory accesses ...
    (freebsd-arch)
  • Re: testbench for a microprocessor
    ... for your CPU, and writing a really classy instruction- ... Next, you'll need a memory model, with the right bus ... instructions for the CPU to chew, ... Then I'd build a testbench with the CPU-under-test ...
    (comp.lang.vhdl)