Re: [Qemu-devel] -kernel-kqemu

[Brad Campbell <brad@wasp.net.au>]

Troy Benjegerdes wrote:
> On Thu, Feb 09, 2006 at 04:01:34PM -0600, Anthony Liguori wrote:
>> Jim C. Brown wrote:
>>> -kernel-kqemu virtualizes ring 0 code.
>>>
>>> So it basically makes qemu do what VMware does.
>>>
>>> IIRC someone reported a 33% speedup with the new option.
>>>  
>> That was me.  That was a 33% speedup on win2k startup time.  kqemu (user 
>> only) has a negligible impact on win2k startup time which suggests this 
>> is mostly ring 0 code running which would make it a good benchmark for 
>> kernel-kqemu performance.
>>
>> This was a terribly unscientific benchmarking so don't read too much 
>> into it.
>>
>> Regards,
>>
>> Anthony Liguori
> 
> My win2k guest (with SP4, but not any updates) seemed to hang on startup
> with -kernel-kqemu.

Are you using -m 256 by any chance? I get this result with around that much ram allocated to the 
guest. -m 160 (or less) or -m 384 (or more) works perfectly here..



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