On Wed, Feb 23, 2005 at 05:04:30PM -0500, Dennis Taylor wrote:
> Go ahead, if you like preaching to the choir. :-) In the land
> of Perfect, there would be no Windoze, but I don't live in
> perfect.
> 
> I said long ago that Norton Anti-virus is not very effective
> because it does not detect windows as a virus. :-(
> 

Windows self replicate? Does that mean my QEMU installation will start
backing itself up? This could come in handy. =)

In any case, has anyone played with QEMU lately? I currently don't
have the guts to install an alpha-stage kernel patch, so I haven't yet
tested out KQEMU aka the QEMU accelerator. Any comments on that?

(and no, please don't refer me to /., the source of myriad
mis-information)

Also, how does /proc/cpuinfo get its data? I think the Bogomips number
is calculated at boot time, no? How about the CPU speed? I am asking
because if I tried booting linux in QEMU under my gentoo box, the
Emulated OS reports the exact same data in /proc/cpuinfo compared to
the host OS, except for a bogomips number that is slightly slower
(IIRC something like 70% of the host OS). I know that bogomips are NOT
the best way of measuring performance, but consider the following:

 From the QEMU website http://fabrice.bellard.free.fr/qemu/
   * Without the KQEMU module, the guest OS should run at 10 to 20% of
     of a native OS on the same computer.
   * With the module on x86 machines, the guest OS can run at 50% or
     better. 

So either bogomips as a way of gauging performance is a lot more
broken than I imagined, or Fabrice Bellard significantly
underestimated the performance of his own code.... 

W

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