[Qemu-devel] full speed ?

[Qemu-devel] full speed ?

[vaise]

Well, on my Athlon 1800+, Qemu is too slow to be usable... So my question is : 
when Qemu does not do input/output,( for example calculus) , does it run at 
nearly full speed ? (on x86 on x86 of course). Will it be possible one day, 
or is it impossible due to its nature ?

Re: [Qemu-devel] full speed ?

[Hetz Ben Hamo]

vaise@votreservice.com wrote:
> Well, on my Athlon 1800+, Qemu is too slow to be usable... So my question is : 
> when Qemu does not do input/output,( for example calculus) , does it run at 
> nearly full speed ? (on x86 on x86 of course). Will it be possible one day, 
> or is it impossible due to its nature ?

That really depends...

Do you mean the graphics are too slow? you might want to try to enable 
Remote Desktop connection and use either rdesktop or Windows native 
client to connect and see the speed (if it's Windows XP)..

QEMU is still in development stages and as time goes on, it will be 
faster. There are other plans to make it much faster (X86 on X86) but it 
  cannot be discussed it at the moment..

Thanks,
Hetz

Re: [Qemu-devel] full speed ?

[Derek Fawcus]

On Sat, Jun 05, 2004 at 08:15:13PM +0300, Hetz Ben Hamo wrote:
> There are other plans to make it much faster (X86 on X86) but it 
> cannot be discussed it at the moment..

Cannot be discussed?   Well the obvious approach is to split the program
such that user mode code runs in a seperate process,  then arrange for
that process to be controlled by the main process as a debugee.

Then the main process has complete control over the child,  and can mess 
with it (including memory mappings,  cataching signals and syscalls) to
it's heart's content.  This would allow user space to run at full speed,
while still having the system space running in the emulated dynamic
translation system.

It'd take some work to do this,  and get the synchronisation working
correctly,  but as I said it's the 'obvious' approach.  It also has
the advantage that it would work well on x86-64.

DF