Re: [Qemu-devel] objective benchmark?

[Kazu]

Anthony Liguori wrote:

> Mikhail Ramendik wrote:
>> Hello,
>>
>> As I have reported before, it seems that on my host linux system kqemu
does
>> not work with guest win98se.
>>
>> Is there any benchmark that I could run in the guest, with and without
kqemu,
>> to check if this is so objectively? (Ideally I'd like two benchmarks -
16-bit
>> and 32-bit code).
>>
>
> The vast majority of guest benchmarking programs are going to give you
> invalid results.  The clock within QEMU (rdtsc and wall clock) are not
> very reliable and this is going to skew the results.
>

If you set /proc/sys/dev/rtc/max-user-freq to 1024 and disable cpuspeed
service that is related to SpeedStep/PowerNow! on a host OS, the clock in
guest OS works fine.

I checked it on i686/x86_64 Linux host.

Regards,
Kazu